{"id":105681,"date":"2026-09-15T21:08:22","date_gmt":"2026-09-15T13:08:22","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/105681.html"},"modified":"2026-09-15T21:08:22","modified_gmt":"2026-09-15T13:08:22","slug":"%e8%bd%bb%e6%9d%be%e5%ad%a6%e4%b9%a0zephyr-bsp-07-soc%e9%a9%b1%e5%8a%a8%e4%b8%8e%e8%ae%be%e5%a4%87%e6%a0%91%e7%bb%91%e5%ae%9a","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/105681.html","title":{"rendered":"\u8f7b\u677e\u5b66\u4e60Zephyr BSP: 07-SoC\u9a71\u52a8\u4e0e\u8bbe\u5907\u6811\u7ed1\u5b9a"},"content":{"rendered":"<p>\u6458\u8981&#xff1a;\u627f\u63a5\u7b2c 06 \u7bc7\u7684 Devicetree \u5b9e\u6218&#xff0c;\u672c\u7bc7\u8fdb\u5165 SoC BSP \u7684\u9a71\u52a8\u5c42&#xff0c;\u6838\u5fc3\u4e3b\u7ebf\u662f\u300cBinding \u5b9a\u4e49\u89c4\u5219\u3001DTS \u63cf\u8ff0\u5b9e\u4f8b\u3001Driver \u6267\u884c\u64cd\u4f5c\u300d\u3002\u901a\u8fc7\u4e00\u4e2a\u5b8c\u6574 UART \u5b9e\u4f8b&#xff0c;\u4e32\u8054 Binding YAML \u2192 Devicetree \u8282\u70b9 \u2192 Driver \u5b8f\u7684\u7f16\u8bd1\u671f\u94fe\u8def&#xff0c;\u5e76\u5256\u6790 Config\/Data \u6a21\u5f0f\u4e0e\u591a\u5b9e\u4f8b\u751f\u6210\u673a\u5236&#xff0c;\u4e3a\u4e0b\u4e00\u7bc7 UART Driver \u6700\u5c0f\u5b9e\u6218\u94fa\u8def\u3002<br \/>\nSoC Driver \u4e0e Devicetree Binding<br \/>\n\u8fd9\u4e00\u7bc7\u6b63\u597d\u8fdb\u5165 Zephyr SoC BSP \u771f\u6b63\u7684&#034;\u9a71\u52a8\u5c42&#034;\u3002<br \/>\n\u4f60\u524d\u9762\u5df2\u7ecf\u5efa\u7acb\u4e86\u8fd9\u6761\u4e3b\u7ebf&#xff1a;<br \/>\n01 Zephyr Hardware Model<br \/>\n02 Architecture \u2192 SoC \u2192 Board<br \/>\n03 Zephyr SoC Porting<br \/>\n04 SoC Porting \u5b9e\u6218<br \/>\n05 Zephyr SoC Devicetree<br \/>\n06 SoC Devicetree \u5b9e\u6218<br \/>\n07 SoC Driver &#043; Devicetree Binding \u2190 \u73b0\u5728<\/p>\n<p>\u5bf9\u4e8e\u4f60\u7684\u6700\u7ec8\u76ee\u6807\u2014\u2014\u628a\u516c\u53f8\u81ea\u5df1\u7684 SoC \u52a0\u5165 Zephyr \u5f00\u53d1\u751f\u6001\u2014\u2014\u8fd9\u4e00\u7bc7\u5c24\u5176\u91cd\u8981&#xff0c;\u56e0\u4e3a\u4ece\u8fd9\u91cc\u5f00\u59cb&#xff0c;\u4f60\u8981\u7406\u89e3&#xff1a;<\/p>\n<p>\u672c\u6587\u6838\u5fc3\u7ed3\u8bba\u901f\u89c8<\/p>\n<p>\u5728\u6df1\u5165\u6b63\u6587\u4e4b\u524d&#xff0c;\u5148\u628a\u672c\u7bc7\u6700\u5173\u952e\u7684\u51e0\u6761\u7ed3\u8bba\u653e\u5728\u8fd9\u91cc&#xff0c;\u65b9\u4fbf\u4f60\u5e26\u7740\u4e3b\u7ebf\u9605\u8bfb&#xff1a;<\/p>\n<ul>\n<li>\u4e09\u8005\u5206\u5de5&#xff1a;Binding \u5b9a\u4e49\u89c4\u5219&#xff08;\u5c5e\u6027 schema&#xff09;&#xff0c;DTS \u63cf\u8ff0\u5b9e\u4f8b&#xff08;\u786c\u4ef6\u957f\u4ec0\u4e48\u6837&#xff09;&#xff0c;Driver \u6267\u884c\u64cd\u4f5c&#xff08;\u5982\u4f55\u63a7\u5236\u786c\u4ef6&#xff09;\u3002\u4e09\u8005\u901a\u8fc7 compatible \u8fd9\u6761&#034;\u94a5\u5319&#034;\u4e32\u6210\u5b8c\u6574\u94fe\u8def\u3002<\/li>\n<li>compatible \u5339\u914d\u673a\u5236&#xff1a;Devicetree \u8282\u70b9\u91cc\u7684 compatible &#061; &#034;mycompany,myuart&#034; \u4e0e Binding YAML \u4e2d\u7684 compatible \u5b8c\u5168\u4e00\u81f4\u65f6&#xff0c;Binding \u624d\u4f1a\u88ab\u5e94\u7528&#xff1b;Driver \u518d\u901a\u8fc7 #define DT_DRV_COMPAT mycompany_myuart&#xff08;\u9017\u53f7\u8f6c\u4e0b\u5212\u7ebf&#xff09;\u7ed1\u5b9a\u5230\u540c\u4e00\u6279\u8282\u70b9\u3002<\/li>\n<li>\u7f16\u8bd1\u671f\u751f\u6210\u539f\u7406&#xff1a;DT_INST_* \u5b8f&#xff08;\u5982 DT_INST_REG_ADDR\u3001DT_INST_IRQ&#xff09;\u4e0d\u662f\u8fd0\u884c\u65f6\u67e5\u8be2&#xff0c;\u800c\u662f Devicetree Compiler \u5728\u7f16\u8bd1\u671f\u628a\u8282\u70b9\u5c5e\u6027\u5c55\u5f00\u6210\u5b57\u9762\u91cf\u5e38\u91cf&#xff0c;\u76f4\u63a5\u5199\u8fdb config \u7ed3\u6784\u4f53\u3002<\/li>\n<li>\u591a\u5b9e\u4f8b\u673a\u5236&#xff1a;DT_INST_FOREACH_STATUS_OKAY(MYUART_DEFINE) \u5728\u7f16\u8bd1\u671f\u904d\u5386\u6240\u6709 status &#061; &#034;okay&#034; \u7684\u540c compatible \u8282\u70b9&#xff0c;\u9010\u4e2a\u5c55\u5f00\u5b8f&#xff0c;\u8ba9\u4e00\u4e2a Driver \u81ea\u52a8\u670d\u52a1\u591a\u4e2a\u786c\u4ef6\u5b9e\u4f8b&#xff08;uart0 \u2192 inst&#061;0&#xff0c;uart1 \u2192 inst&#061;1&#xff09;\u3002<\/li>\n<li>Config\/Data \u8bbe\u8ba1\u6a21\u5f0f&#xff1a;config \u4fdd\u5b58&#034;\u8fd9\u4e2a\u786c\u4ef6\u662f\u4ec0\u4e48&#034;&#xff08;\u7f16\u8bd1\u671f\u786e\u5b9a&#xff09;&#xff0c;data \u4fdd\u5b58&#034;\u5f53\u524d\u5904\u4e8e\u4ec0\u4e48\u72b6\u6001&#034;&#xff08;\u8fd0\u884c\u65f6\u53ef\u53d8&#xff09;&#xff0c;\u8fd9\u662f Zephyr Driver \u7684\u6838\u5fc3\u601d\u7ef4\u3002<\/li>\n<li>SoC BSP \u804c\u8d23\u8fb9\u754c&#xff1a;\u786c\u4ef6\u63cf\u8ff0\u95ee\u9898\u770b Devicetree\/Binding&#xff0c;\u786c\u4ef6\u64cd\u4f5c\u95ee\u9898\u770b Driver&#xff0c;SoC \u521d\u59cb\u5316\u95ee\u9898\u770b SoC Porting&#xff0c;\u677f\u7ea7\u8fde\u63a5\u95ee\u9898\u770b Board DTS\u2014\u2014\u56db\u7c7b\u95ee\u9898\u5404\u6709\u5f52\u5c5e&#xff0c;\u4e0d\u8981\u6df7\u4e3a\u4e00\u8c08\u3002<\/li>\n<\/ul>\n<p>SoC \u786c\u4ef6\u8d44\u6e90\u5982\u4f55\u901a\u8fc7 Devicetree \u63cf\u8ff0&#xff0c;\u518d\u7531 Driver \u8bfb\u53d6\u8fd9\u4e9b\u63cf\u8ff0\u5e76\u63a7\u5236\u786c\u4ef6\u3002<\/p>\n<p>\u4e00\u3001\u5148\u5efa\u7acb\u6574\u4f53\u8ba4\u8bc6<br \/>\n\u5f88\u591a\u521d\u5b66\u8005\u4f1a\u628a\u8fd9\u51e0\u4e2a\u6982\u5ff5\u6df7\u5728\u4e00\u8d77&#xff1a;<\/p>\n<p>Devicetree<br \/>\nBinding<br \/>\nDriver<br \/>\nHAL<br \/>\nSoC<br \/>\nBoard<\/p>\n<p>\u5b9e\u9645\u4e0a\u5b83\u4eec\u5404\u81ea\u89e3\u51b3\u4e0d\u540c\u7684\u95ee\u9898\u3002<br \/>\n\u53ef\u4ee5\u5148\u8bb0\u4f4f&#xff1a;<\/p>\n<p>Zephyr Application<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nZephyr API<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nDriver<br \/>\n    \u2502<br \/>\n \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n \u2502                     \u2502<br \/>\nDevicetree      HAL \/ Register<br \/>\n \u2502                     \u2502<br \/>\n \u25bc                     \u25bc<br \/>\n\u786c\u4ef6\u63cf\u8ff0             \u786c\u4ef6\u64cd\u4f5c<br \/>\n \u2502                     \u2502<br \/>\n \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n            \u25bc<br \/>\n           SoC<\/p>\n<p>\u4f8b\u5982&#xff1a;<br \/>\ngpio_pin_set_dt(&amp;led, 1);<br \/>\nApplication \u5e76\u4e0d\u77e5\u9053&#xff1a;<\/p>\n<p>GPIO controller \u5728\u54ea\u91cc<br \/>\n\u54ea\u4e2a\u5bc4\u5b58\u5668<br \/>\n\u54ea\u4e2a bit<br \/>\nclock \u600e\u4e48\u5f00<br \/>\npinmux \u600e\u4e48\u914d\u7f6e<\/p>\n<p>\u4e3a\u4e86\u66f4\u76f4\u89c2\u5730\u770b\u6e05\u516d\u8005\u7684\u5b8c\u6574\u8c03\u7528\u94fe\u548c\u6570\u636e\u6d41&#xff0c;\u8fd9\u91cc\u7ed9\u51fa\u4e00\u5f20\u603b\u89c8\u56fe&#xff1a;<\/p>\n<p>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502                        Zephyr Application                           \u2502<br \/>\n\u2502              &#xff08;\u8c03\u7528 Zephyr API&#xff0c;\u4e0d\u611f\u77e5\u5e95\u5c42\u786c\u4ef6\u7ec6\u8282&#xff09;                    \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n                                \u2502  \u2460 \u8c03\u7528\u6807\u51c6 API&#xff08;\u5982 uart_poll_out&#xff09;<br \/>\n                                \u25bc<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502                            Zephyr API                               \u2502<br \/>\n\u2502              &#xff08;uart \/ gpio \/ spi \u7b49\u5b50\u7cfb\u7edf\u5bf9\u5916\u7edf\u4e00\u63a5\u53e3&#xff09;                 \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n                                \u2502  \u2461 \u5206\u53d1\u5230\u5177\u4f53 Driver \u7684 API \u56de\u8c03<br \/>\n                                \u25bc<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502                             Driver                                  \u2502<br \/>\n\u2502   \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510        \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510    \u2502<br \/>\n\u2502   \u2502  config&#xff08;\u7f16\u8bd1\u671f\u5e38\u91cf&#xff09;   \u2502        \u2502  data&#xff08;\u8fd0\u884c\u65f6\u72b6\u6001&#xff09;         \u2502    \u2502<br \/>\n\u2502   \u2502  \u6765\u81ea DT_INST_* \u5b8f     \u2502        \u2502  \u6ce2\u7279\u7387\u3001\u7f13\u51b2\u3001\u6807\u5fd7\u4f4d\u7b49     \u2502    \u2502<br \/>\n\u2502   \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518        \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518    \u2502<br \/>\n\u2502               \u2502  \u2462 \u8bfb\u53d6\u7f16\u8bd1\u671f\u751f\u6210\u7684\u786c\u4ef6\u914d\u7f6e                            \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n                \u2502  \u2463 \u901a\u8fc7 DT_INST_* \u5b8f\u53d6\u5730\u5740\/\u4e2d\u65ad\/\u65f6\u949f<br \/>\n                \u25bc<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502                        Devicetree <span class=\"token punctuation\">(<\/span>DTS<span class=\"token punctuation\">)<\/span>                             \u2502<br \/>\n\u2502   uart0: serial&#064;40000000 <span class=\"token punctuation\">{<\/span> compatible <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">..<\/span>. <span class=\"token punctuation\">}<\/span>   \u2502<br \/>\n\u2502   &#xff08;\u63cf\u8ff0\u786c\u4ef6\u5b9e\u4f8b&#xff1a;\u5730\u5740\u3001\u4e2d\u65ad\u3001\u65f6\u949f\u3001\u5f15\u811a&#xff09;                              \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n                \u2502  \u2464 \u8282\u70b9\u5c5e\u6027\u7531 Binding \u6821\u9a8c\u5408\u6cd5\u6027<br \/>\n                \u25bc<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502                        Binding YAML                                 \u2502<br \/>\n\u2502   compatible: <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span>                                    \u2502<br \/>\n\u2502   properties: reg \/ interrupts \/ clocks <span class=\"token punctuation\">..<\/span>.                         \u2502<br \/>\n\u2502   &#xff08;\u5b9a\u4e49\u5c5e\u6027 schema&#xff0c;\u7f16\u8bd1\u671f\u88ab Devicetree Compiler \u8bfb\u53d6&#xff09;               \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n                \u2502  \u2465 \u6821\u9a8c\u901a\u8fc7\u540e&#xff0c;\u8282\u70b9\u5c5e\u6027\u88ab\u7f16\u8bd1\u6210\u5b8f<br \/>\n                \u25bc<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502                             HAL                                     \u2502<br \/>\n\u2502   &#xff08;\u5bc4\u5b58\u5668\u8bfb\u5199\u5c01\u88c5&#xff1a;sys_read32 \/ sys_write32&#xff0c;\u5c4f\u853d\u4f4d\u64cd\u4f5c\u7ec6\u8282&#xff09;          \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n                \u2502  \u2466 \u6700\u7ec8\u8bfb\u5199 SoC \u7269\u7406\u5bc4\u5b58\u5668<br \/>\n                \u25bc<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502                              SoC                                    \u2502<br \/>\n\u2502   &#xff08;UART \/ GPIO \/ SPI \u7b49\u5916\u8bbe\u7684\u7269\u7406\u5bc4\u5b58\u5668&#xff0c;\u7531 SoC Porting \u63d0\u4f9b\u65f6\u949f\u3001    \u2502<br \/>\n\u2502     \u4e2d\u65ad\u63a7\u5236\u5668\u3001\u4f4e\u5c42\u542f\u52a8\u7b49\u57fa\u7840\u80fd\u529b&#xff09;                                   \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n                \u2502  \u2467 \u5f15\u811a\/\u677f\u7ea7\u8fde\u63a5\u7531 Board DTS \u51b3\u5b9a<br \/>\n                \u25bc<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502                             Board                                   \u2502<br \/>\n\u2502   &#xff08;\u677f\u7ea7 DTS \/ overlay&#xff1a;UART0 \u63a5\u5230\u54ea\u4e2a pin\u3001LED \u63a5\u54ea\u4e2a GPIO \u7b49&#xff09;       \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/p>\n<p>\u8fd9\u5f20\u56fe\u628a\u516d\u8005\u7684\u804c\u8d23\u548c\u76f8\u90bb\u5c42\u4e4b\u95f4\u7684\u63a5\u53e3\u4e32\u6210\u4e00\u6761\u5b8c\u6574\u94fe\u8def&#xff0c;\u53ef\u4ee5\u8fd9\u6837\u7406\u89e3&#xff1a;<\/p>\n<ul>\n<li>Application \u2192 Zephyr API&#xff1a;\u5e94\u7528\u53ea\u8c03\u7528\u6807\u51c6 API&#xff0c;\u4e0d\u611f\u77e5\u5e95\u5c42\u786c\u4ef6\u7ec6\u8282&#xff0c;\u63a5\u53e3\u662f uart_poll_out()\u3001gpio_pin_set_dt() \u8fd9\u7c7b\u7edf\u4e00\u51fd\u6570\u3002<\/li>\n<li>Zephyr API \u2192 Driver&#xff1a;API \u5c42\u628a\u8c03\u7528\u5206\u53d1\u5230\u5177\u4f53 Driver \u7684 API \u56de\u8c03&#xff08;\u5982 uart_driver_api \u4e2d\u7684 poll_out&#xff09;&#xff0c;\u63a5\u53e3\u662f struct uart_driver_api\u3002<\/li>\n<li>Driver \u2192 Devicetree \u2192 Binding&#xff1a;Driver \u901a\u8fc7 DT_INST_* \u5b8f\u5728\u7f16\u8bd1\u671f\u8bfb\u53d6 Devicetree \u8282\u70b9\u5c5e\u6027&#xff0c;\u800c\u8282\u70b9\u5c5e\u6027\u662f\u5426\u5408\u6cd5\u7531 Binding \u6821\u9a8c&#xff1b;\u63a5\u53e3\u662f DT_INST_REG_ADDR()\u3001DT_INST_IRQ() \u7b49\u5b8f\u3002<\/li>\n<li>Driver \u2192 HAL \u2192 SoC&#xff1a;Driver \u901a\u8fc7 HAL \u7684\u5bc4\u5b58\u5668\u8bfb\u5199\u5c01\u88c5&#xff08;sys_read32\/sys_write32&#xff09;\u6700\u7ec8\u64cd\u4f5c SoC \u7269\u7406\u5bc4\u5b58\u5668&#xff1b;\u63a5\u53e3\u662f\u5bc4\u5b58\u5668\u8bfb\u5199\u51fd\u6570\u3002<\/li>\n<li>SoC \u2192 Board&#xff1a;SoC \u63d0\u4f9b\u5916\u8bbe\u63a7\u5236\u5668&#xff0c;\u4f46\u5177\u4f53\u5f15\u811a\u8fde\u63a5\u3001\u677f\u7ea7\u5916\u8bbe\u7531 Board DTS \u51b3\u5b9a&#xff1b;\u63a5\u53e3\u662f\u677f\u7ea7 DTS \u4e2d\u7684 pinctrl \u548c\u8282\u70b9\u5f15\u7528\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u4e8b\u60c5\u7531\u4e0b\u9762\u51e0\u5c42\u5171\u540c\u5b8c\u6210&#xff1a;<\/p>\n<p>Application<br \/>\n\u2193<br \/>\nGPIO API<br \/>\n\u2193<br \/>\nGPIO Driver<br \/>\n\u2193<br \/>\nDevicetree<br \/>\n\u2193<br \/>\nSoC GPIO registers<\/p>\n<p>\u4e8c\u3001\u4e3a\u4ec0\u4e48 SoC BSP \u4e00\u5b9a\u4f1a\u9047\u5230 Driver&#xff1f;<br \/>\n\u5047\u8bbe\u4f60\u7684\u516c\u53f8 SoC \u6709&#xff1a;<\/p>\n<p>UART0<br \/>\nUART1<br \/>\nGPIO0<br \/>\nGPIO1<br \/>\nI2C0<br \/>\nSPI0<br \/>\nTIMER0<br \/>\nPWM0<br \/>\nADC0<\/p>\n<p>\u90a3\u4e48 Zephyr \u5fc5\u987b\u77e5\u9053&#xff1a;<\/p>\n<p>UART0 \u5728\u54ea\u91cc&#xff1f;<br \/>\nUART0 \u6709\u54ea\u4e9b\u5bc4\u5b58\u5668&#xff1f;<br \/>\nUART0 \u7684 clock \u600e\u4e48\u6253\u5f00&#xff1f;<br \/>\nUART0 \u7684 interrupt \u662f\u4ec0\u4e48&#xff1f;<br \/>\nUART0 \u4f7f\u7528\u54ea\u4e2a pin&#xff1f;<\/p>\n<p>\u8fd9\u4e9b\u4fe1\u606f\u4e0d\u80fd\u5168\u90e8\u786c\u7f16\u7801\u5728 Driver \u4e2d\u3002<br \/>\n\u5426\u5219\u4f60\u6700\u540e\u53ef\u80fd\u5199\u51fa&#xff1a;<\/p>\n<p><span class=\"token comment\"># define UART0_BASE 0x40000000<\/span><br \/>\n<span class=\"token comment\"># define UART0_IRQ 32<\/span><br \/>\n<span class=\"token comment\"># define UART0_CLK &#8230;<\/span><\/p>\n<p>\u7136\u540e Driver \u91cc\u9762\u5230\u5904\u90fd\u662f&#xff1a;<\/p>\n<p><span class=\"token comment\"># define &#8230;<\/span><\/p>\n<p>\u8fd9\u4f1a\u5bfc\u81f4 Driver \u4e0e\u5177\u4f53 SoC \u5f3a\u8026\u5408\u3002<br \/>\nZephyr \u66f4\u5e0c\u671b&#xff1a;<\/p>\n<p>Devicetree<br \/>\n\u2193<br \/>\n\u63cf\u8ff0\u786c\u4ef6\u5b9e\u4f8b<br \/>\n\u2193<br \/>\nDriver<br \/>\n\u2193<br \/>\n\u8bfb\u53d6\u786c\u4ef6\u914d\u7f6e<\/p>\n<p>\u6240\u4ee5&#xff1a;<br \/>\nDevicetree Binding &#043; Devicetree &#043; Driver \u662f\u4e00\u7ec4\u5b8c\u6574\u4f53\u7cfb\u3002<\/p>\n<p>\u4e09\u3001\u4ec0\u4e48\u662f Devicetree Binding&#xff1f;<br \/>\nBinding \u53ef\u4ee5\u7406\u89e3\u6210&#xff1a;<br \/>\n\u544a\u8bc9 Zephyr&#xff1a;\u4e00\u4e2a Devicetree \u8282\u70b9\u5141\u8bb8\u6709\u54ea\u4e9b\u5c5e\u6027&#xff0c;\u4ee5\u53ca\u8fd9\u4e9b\u5c5e\u6027\u5206\u522b\u662f\u4ec0\u4e48\u7c7b\u578b\u3002<\/p>\n<p>\u4f8b\u5982\u6211\u4eec\u6709&#xff1a;<\/p>\n<p>uart0: serial&#064;40000000 <span class=\"token punctuation\">{<\/span><br \/>\ncompatible <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;company,foo-uart&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\nreg <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>lt<span class=\"token punctuation\">;<\/span>0x40000000 0x1000<span class=\"token operator\">&amp;<\/span>gt<span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><br \/>\ninterrupts <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>lt<span class=\"token punctuation\">;<\/span><span class=\"token number\">32<\/span><span class=\"token operator\">&amp;<\/span>gt<span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><br \/>\nclocks <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>lt<span class=\"token punctuation\">;<\/span><span class=\"token operator\">&amp;<\/span>clk UART0_CLK<span class=\"token operator\">&amp;<\/span>gt<span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><br \/>\nstatus <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;okay&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u8fd9\u91cc&#xff1a;<\/p>\n<p>compatible<br \/>\nreg<br \/>\ninterrupts<br \/>\nclocks<br \/>\nstatus<\/p>\n<p>\u90fd\u662f Devicetree properties\u3002<br \/>\nBinding \u5219\u63cf\u8ff0&#xff1a;<\/p>\n<p>compatible:<br \/>\ncompany,foo-uart<\/p>\n<p>properties:<br \/>\nreg:<br \/>\ntype: array<\/p>\n<p>interrupts:<br \/>\ntype: array<\/p>\n<p>clocks:<br \/>\ntype: phandle-array<\/p>\n<p>\u6240\u4ee5&#xff1a;<\/p>\n<p>DTS<br \/>\n\u2502<br \/>\n\u2502 <span class=\"token string\">&#034;\u6211\u6709\u8fd9\u4e9b\u5c5e\u6027&#034;<\/span><br \/>\n\u25bc<br \/>\nBinding<br \/>\n\u2502<br \/>\n\u2502 <span class=\"token string\">&#034;\u8fd9\u4e9b\u5c5e\u6027\u662f\u5426\u5408\u6cd5\u3001\u662f\u4ec0\u4e48\u7c7b\u578b&#034;<\/span><br \/>\n\u25bc<br \/>\nDevicetree validation<\/p>\n<p>\u56db\u3001Binding \u6700\u91cd\u8981\u7684\u4e1c\u897f&#xff1a;compatible<br \/>\n\u5728 Zephyr Driver \u4e2d&#xff0c;\u6700\u91cd\u8981\u7684\u8fde\u63a5\u70b9\u4e4b\u4e00\u5c31\u662f&#xff1a;<\/p>\n<p>compatible <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;company,foo-uart&#034;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>Driver \u901a\u8fc7\u5b83\u8bc6\u522b\u786c\u4ef6\u3002<br \/>\n\u4f8b\u5982&#xff1a;<\/p>\n<p>compatible <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5bf9\u5e94&#xff1a;<\/p>\n<p>compatible: <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><\/p>\n<p>\u7136\u540e Driver&#xff1a;<\/p>\n<p><span class=\"token comment\"># define DT_DRV_COMPAT mycompany_myuart<\/span><\/p>\n<p>\u6ce8\u610f\u8fd9\u91cc\u6709\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u8f6c\u6362&#xff1a;<\/p>\n<p><span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><br \/>\n\u2193<br \/>\nmycompany_myuart<\/p>\n<p>\u4e5f\u5c31\u662f&#xff1a;<\/p>\n<p>vendor,device<br \/>\n\u2193<br \/>\nvendor_device<\/p>\n<p>\u7136\u540e&#xff1a;<\/p>\n<p>DT_INST_FOREACH_STATUS_OKAY<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">..<\/span>.<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5c31\u53ef\u4ee5\u627e\u5230 Devicetree \u4e2d&#xff1a;<\/p>\n<p>compatible <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u7684\u5b9e\u4f8b\u3002<\/p>\n<p>\u4e94\u3001Binding \u6587\u4ef6\u653e\u5728\u54ea\u91cc&#xff1f;<br \/>\nZephyr \u4e2d\u901a\u5e38\u662f&#xff1a;<\/p>\n<p>dts\/<br \/>\n\u2514\u2500\u2500 bindings\/<br \/>\n\u251c\u2500\u2500 serial\/<br \/>\n\u251c\u2500\u2500 gpio\/<br \/>\n\u251c\u2500\u2500 i2c\/<br \/>\n\u251c\u2500\u2500 spi\/<br \/>\n\u251c\u2500\u2500 pwm\/<br \/>\n\u2514\u2500\u2500 <span class=\"token punctuation\">..<\/span>.<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>dts\/bindings\/serial\/mycompany,myuart.yaml<\/p>\n<p>\u53ef\u80fd\u5199\u6210&#xff1a;<\/p>\n<p>description: MyCompany UART controller<br \/>\ncompatible: <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><\/p>\n<p>include:<br \/>\n<span class=\"token punctuation\">\\\\<\/span>&#8211; name: base.yaml<\/p>\n<p>properties:<br \/>\nreg:<br \/>\nrequired: <span class=\"token boolean\">true<\/span><\/p>\n<p>interrupts:<br \/>\nrequired: <span class=\"token boolean\">true<\/span><\/p>\n<p>clocks:<br \/>\nrequired: <span class=\"token boolean\">true<\/span><\/p>\n<p>\u8fd9\u91cc\u6700\u91cd\u8981\u7684\u662f&#xff1a;<\/p>\n<p>compatible: <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><\/p>\n<p>\u5b83\u628a&#xff1a;<\/p>\n<p>Binding<\/p>\n<p>\u548c&#xff1a;<\/p>\n<p>Devicetree <span class=\"token function\">node<\/span><\/p>\n<p>\u8054\u7cfb\u8d77\u6765\u3002<\/p>\n<p>\u516d\u3001\u4e00\u4e2a\u5b8c\u6574\u4f8b\u5b50<br \/>\n\u5047\u8bbe\u516c\u53f8 SoC \u6709\u4e00\u4e2a UART&#xff1a;<\/p>\n<p>UART0<br \/>\nBase Address <span class=\"token operator\">&#061;<\/span> 0x40000000<br \/>\nSize <span class=\"token operator\">&#061;<\/span> 0x1000<br \/>\nIRQ <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">32<\/span><\/p>\n<p>\u90a3\u4e48\u6211\u4eec\u53ef\u4ee5\u8bbe\u8ba1&#xff1a;<br \/>\n1. Binding<\/p>\n<p>dts\/bindings\/serial\/mycompany,myuart.yaml<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>description: MyCompany UART<\/p>\n<p>compatible: <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><\/p>\n<p>properties:<br \/>\nreg:<br \/>\nrequired: <span class=\"token boolean\">true<\/span><br \/>\ninterrupts:<br \/>\nrequired: <span class=\"token boolean\">true<\/span><br \/>\nclocks:<br \/>\nrequired: <span class=\"token boolean\">true<\/span><\/p>\n<p>2. Devicetree<\/p>\n<p>uart0: serial&#064;40000000 <span class=\"token punctuation\">{<\/span><br \/>\ncompatible <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\nreg <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>lt<span class=\"token punctuation\">;<\/span>0x40000000 0x1000<span class=\"token operator\">&amp;<\/span>gt<span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><br \/>\ninterrupts <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>lt<span class=\"token punctuation\">;<\/span><span class=\"token number\">32<\/span><span class=\"token operator\">&amp;<\/span>gt<span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><br \/>\nclocks <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>lt<span class=\"token punctuation\">;<\/span><span class=\"token operator\">&amp;<\/span>clk UART0_CLK<span class=\"token operator\">&amp;<\/span>gt<span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><br \/>\nstatus <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;okay&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>3. Driver<\/p>\n<p><span class=\"token comment\"># define DT_DRV_COMPAT mycompany_myuart<\/span><\/p>\n<p>\u7136\u540e&#xff1a;<\/p>\n<p>static const struct device <span class=\"token punctuation\">\\\\<\/span>*dev<span class=\"token punctuation\">;<\/span><\/p>\n<p>Driver \u5c31\u53ef\u4ee5\u901a\u8fc7 Devicetree \u5b8f\u53d6\u5f97&#xff1a;<\/p>\n<p>reg<br \/>\ninterrupts<br \/>\nclocks<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p><span class=\"token comment\"># define UART_BASE(inst) \\\\\\\\<\/span><br \/>\nDT_INST_REG_ADDR<span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u6700\u7ec8&#xff1a;<\/p>\n<p>UART_BASE<span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u53ef\u80fd\u5f97\u5230&#xff1a;<\/p>\n<p>0x40000000<\/p>\n<p>\u8fd9\u5c31\u662f Zephyr \u975e\u5e38\u6838\u5fc3\u7684\u4e00\u79cd\u5de5\u4f5c\u65b9\u5f0f&#xff1a;<\/p>\n<p>DTS<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nDevicetree Compiler<br \/>\n\u2502<br \/>\n\u25bc<br \/>\ngenerated devicetree information<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nDT_INST_REG_ADDR<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\nDT_INST_IRQ<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\nDT_INST_PROP<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\nDT_INST_CLOCKS_<span class=\"token punctuation\">..<\/span>.<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nDriver<\/p>\n<p>\u4e03\u3001Driver \u5230\u5e95\u5728\u505a\u4ec0\u4e48&#xff1f;<br \/>\n\u4ee5 UART \u4e3a\u4f8b\u3002<br \/>\n\u5e94\u7528&#xff1a;<\/p>\n<p>printk<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Hello<span class=\"token entity\" title=\"\\\\\\\\\">\\\\\\\\<\/span>n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u6700\u7ec8\u9700\u8981 UART Driver\u3002<br \/>\nDriver \u7684\u804c\u8d23\u901a\u5e38\u5305\u62ec&#xff1a;<\/p>\n<p>\u521d\u59cb\u5316<br \/>\n\u2193<br \/>\nclock<br \/>\n\u2193<br \/>\npinmux<br \/>\n\u2193<br \/>\nUART registers<br \/>\n\u2193<br \/>\ninterrupt<br \/>\n\u2193<br \/>\nbuffer<br \/>\n\u2193<br \/>\nZephyr UART API<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">myuart_init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">device<\/span> \\\\<span class=\"token operator\">*<\/span>dev<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> \\\\<span class=\"token operator\">*<\/span>config <span class=\"token operator\">&#061;<\/span> dev<span class=\"token operator\">-&gt;<\/span>config<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/* enable clock *\/<\/span><br \/>\n<span class=\"token comment\">\/* configure registers *\/<\/span><br \/>\n<span class=\"token comment\">\/* configure interrupt *\/<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8fd9\u91cc&#xff1a;<\/p>\n<p>config<\/p>\n<p>\u5f80\u5f80\u5c31\u662f\u4ece Devicetree \u751f\u6210\u7684\u3002<\/p>\n<p>\u516b\u3001Config \u548c Data \u662f Driver \u8bbe\u8ba1\u4e2d\u7684\u6838\u5fc3<br \/>\nZephyr Driver \u4e2d\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u6a21\u5f0f&#xff1a;<\/p>\n<p><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token class-name\">uintptr_t<\/span> base<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> irq<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_data<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u901a\u5e38&#xff1a;<\/p>\n<p>config<br \/>\n\u2193<br \/>\n\u786c\u4ef6\u914d\u7f6e<br \/>\n\u2193<br \/>\n\u7f16\u8bd1\u671f\u786e\u5b9a<\/p>\n<p>\u800c&#xff1a;<\/p>\n<p>data<br \/>\n\u2193<br \/>\n\u8fd0\u884c\u65f6\u72b6\u6001<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>struct myuart_config <span class=\"token punctuation\">{<\/span><br \/>\nuintptr_t base<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>struct myuart_data <span class=\"token punctuation\">{<\/span><br \/>\nuint32_t baudrate<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u53ef\u4ee5\u7406\u89e3\u6210&#xff1a;<\/p>\n<p>config<br \/>\n\u2514\u2500\u2500 <span class=\"token string\">&#034;\u8fd9\u4e2a UART \u662f\u4ec0\u4e48\u786c\u4ef6&#xff1f;&#034;<\/span><\/p>\n<p>data<br \/>\n\u2514\u2500\u2500 <span class=\"token string\">&#034;\u8fd9\u4e2a UART \u5f53\u524d\u5904\u4e8e\u4ec0\u4e48\u72b6\u6001&#xff1f;&#034;<\/span><\/p>\n<p>\u8fd9\u662f\u5199 Zephyr Driver \u65f6\u975e\u5e38\u503c\u5f97\u517b\u6210\u7684\u601d\u7ef4\u65b9\u5f0f\u3002<\/p>\n<p>\u4e5d\u3001Devicetree \u2192 Driver \u7684\u771f\u6b63\u5173\u7cfb<br \/>\n\u4f60\u53ef\u4ee5\u628a\u5b83\u7406\u89e3\u6210&#xff1a;<\/p>\n<p>Devicetree<br \/>\n\u2502<br \/>\n\u2502 describes<br \/>\n\u25bc<br \/>\nHardware<br \/>\n\u2502<br \/>\n\u2502 matched by<br \/>\n\u25bc<br \/>\ncompatible<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nDriver<\/p>\n<p>\u66f4\u5b8c\u6574\u4e00\u70b9&#xff1a;<\/p>\n<p>Board DTS<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nSoC DTSI<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nperipheral <span class=\"token function\">node<\/span><br \/>\n\u2502<br \/>\n\u2502 compatible<br \/>\n\u25bc<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502 Binding YAML \u2502<br \/>\n\u2502 \u2502<br \/>\n\u2502 reg \u2502<br \/>\n\u2502 interrupts \u2502<br \/>\n\u2502 clocks \u2502<br \/>\n\u2502 pinctrl \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n          \u2502<br \/>\n          \u25bc<br \/>\nDT macros<br \/>\n  \u2502<br \/>\n  \u25bc<br \/>\nDriver<br \/>\n  \u2502<br \/>\n  \u25bc<br \/>\nHardware registers<\/p>\n<p>\u8fd9\u5f20\u56fe\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<p>\u5341\u3001\u4e3a\u4ec0\u4e48\u4e0d\u80fd\u53ea\u5199 Driver&#xff1f;<br \/>\n\u5047\u8bbe\u4f60\u76f4\u63a5\u5199&#xff1a;<\/p>\n<p><span class=\"token comment\"># define UART0_BASE 0x40000000<\/span><\/p>\n<p>\u7136\u540e&#xff1a;<\/p>\n<p><span class=\"token keyword\">volatile<\/span> <span class=\"token class-name\">uint32_t<\/span> \\\\<span class=\"token operator\">*<\/span>reg <span class=\"token operator\">&#061;<\/span><br \/>\n<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">volatile<\/span> <span class=\"token class-name\">uint32_t<\/span> \\\\<span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span>UART0_BASE<span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5f53\u7136\u53ef\u4ee5\u63a7\u5236\u786c\u4ef6\u3002<br \/>\n\u4f46\u95ee\u9898\u662f&#xff1a;<\/p>\n<p>UART0<br \/>\nUART1<br \/>\nUART2<\/p>\n<p>\u600e\u4e48\u529e&#xff1f;<br \/>\n\u4f60\u6700\u7ec8\u53ef\u80fd\u51fa\u73b0&#xff1a;<\/p>\n<p><span class=\"token comment\"># define UART0_BASE &#8230;<\/span><br \/>\n<span class=\"token comment\"># define UART1_BASE &#8230;<\/span><br \/>\n<span class=\"token comment\"># define UART2_BASE &#8230;<\/span><\/p>\n<p>\u7136\u540e\u5927\u91cf&#xff1a;<\/p>\n<p><span class=\"token comment\"># ifdef CONFIG_MY_SOC<\/span><br \/>\n<span class=\"token punctuation\">..<\/span>.<br \/>\n<span class=\"token comment\"># endif<\/span><\/p>\n<p>\u8fd9\u79cd Driver \u5f88\u5feb\u4f1a\u5931\u63a7\u3002<\/p>\n<p>Zephyr \u7684\u8bbe\u8ba1\u76ee\u6807\u662f&#xff1a;<\/p>\n<p>\u540c\u4e00\u4e2a Driver<br \/>\n\u2502<br \/>\n\u251c\u2500\u2500 UART0<br \/>\n\u251c\u2500\u2500 UART1<br \/>\n\u251c\u2500\u2500 UART2<br \/>\n\u2514\u2500\u2500 UART3<\/p>\n<p>\u901a\u8fc7&#xff1a;<\/p>\n<p>Devicetree instances<\/p>\n<p>\u751f\u6210\u4e0d\u540c\u5b9e\u4f8b\u3002<\/p>\n<p>\u5341\u4e00\u3001\u4e00\u4e2a SoC \u6709\u591a\u4e2a UART<br \/>\n\u4f8b\u5982&#xff1a;<\/p>\n<p>uart0<span class=\"token operator\">:<\/span> serial&#064;<span class=\"token number\">40000000<\/span> <span class=\"token punctuation\">{<\/span><br \/>\ncompatible <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\nreg <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>lt<span class=\"token punctuation\">;<\/span><span class=\"token number\">0x40000000<\/span> <span class=\"token number\">0x1000<\/span><span class=\"token operator\">&amp;<\/span>gt<span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><br \/>\ninterrupts <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>lt<span class=\"token punctuation\">;<\/span><span class=\"token number\">32<\/span><span class=\"token operator\">&amp;<\/span>gt<span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><br \/>\nstatus <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;okay&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>uart1<span class=\"token operator\">:<\/span> serial&#064;<span class=\"token number\">40001000<\/span> <span class=\"token punctuation\">{<\/span><br \/>\ncompatible <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\nreg <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>lt<span class=\"token punctuation\">;<\/span><span class=\"token number\">0x40001000<\/span> <span class=\"token number\">0x1000<\/span><span class=\"token operator\">&amp;<\/span>gt<span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><br \/>\ninterrupts <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>lt<span class=\"token punctuation\">;<\/span><span class=\"token number\">33<\/span><span class=\"token operator\">&amp;<\/span>gt<span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><br \/>\nstatus <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;okay&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u6ce8\u610f&#xff1a;<br \/>\n\u4e24\u4e2a\u8282\u70b9&#xff1a;<\/p>\n<p>compatible \u5b8c\u5168\u4e00\u6837<\/p>\n<p>\u4f46\u662f&#xff1a;<\/p>\n<p>reg \u4e0d\u4e00\u6837<br \/>\ninterrupt \u4e0d\u4e00\u6837<\/p>\n<p>\u8fd9\u610f\u5473\u7740&#xff1a;<\/p>\n<p>\u4e00\u4e2a Driver \u53ef\u4ee5\u670d\u52a1\u591a\u4e2a\u786c\u4ef6\u5b9e\u4f8b\u3002<br \/>\n\u8fd9\u662f Zephyr SoC BSP \u975e\u5e38\u5173\u952e\u7684\u80fd\u529b\u3002<\/p>\n<p>\u5341\u4e8c\u3001Driver \u5982\u4f55\u751f\u6210\u591a\u4e2a\u5b9e\u4f8b&#xff1f;<br \/>\n\u5178\u578b\u7ed3\u6784&#xff1a;<\/p>\n<p><span class=\"token comment\"># define DT_DRV_COMPAT mycompany_myuart<\/span><\/p>\n<p>\u7136\u540e&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span> <span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">MYUART_DEFINE<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">)<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\"><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\">myuart_config_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\"><span class=\"token punctuation\">.<\/span>base <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">DT_INST_REG_ADDR<\/span><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\"><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\"><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_data<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\">myuart_data_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst<span class=\"token punctuation\">;<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\"><span class=\"token function\">DEVICE_DT_INST_DEFINE<\/span><span class=\"token punctuation\">(<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\">inst<span class=\"token punctuation\">,<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\">myuart_init<span class=\"token punctuation\">,<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\"><span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\"><span class=\"token operator\">&amp;<\/span>myuart_data_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst<span class=\"token punctuation\">,<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\"><span class=\"token operator\">&amp;<\/span>myuart_config_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst<span class=\"token punctuation\">,<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\">POST_KERNEL<span class=\"token punctuation\">,<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\">CONFIG_SERIAL_INIT_PRIORITY<span class=\"token punctuation\">,<\/span> <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\"><span class=\"token operator\">&amp;<\/span>myuart_driver_api<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/span><\/span><\/p>\n<p><span class=\"token function\">DT_INST_FOREACH_STATUS_OKAY<\/span><span class=\"token punctuation\">(<\/span>MYUART_DEFINE<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u4e8e\u662f&#xff1a;<\/p>\n<p>uart0<br \/>\n\u2193<br \/>\ninst <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><\/p>\n<p>uart1<br \/>\n\u2193<br \/>\ninst <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><\/p>\n<p>uart2<br \/>\n\u2193<br \/>\ninst <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2<\/span><\/p>\n<p>\u81ea\u52a8\u751f\u6210&#xff1a;<\/p>\n<p>myuart0<br \/>\nmyuart1<br \/>\nmyuart2<\/p>\n<p>\u5341\u4e09\u3001\u8fd9\u5c31\u662f Zephyr Driver \u7684&#034;\u9b54\u6cd5&#034;<\/p>\n<p>\u8868\u9762\u4e0a\u4f60\u770b\u5230&#xff1a;<\/p>\n<p>DT_INST_REG_ADDR<span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u4f46\u771f\u6b63\u53d1\u751f\u7684\u662f&#xff1a;<\/p>\n<p>DTS<br \/>\n\u2193<br \/>\nDevicetree compiler<br \/>\n\u2193<br \/>\ngenerated headers<br \/>\n\u2193<br \/>\nDT macros<br \/>\n\u2193<br \/>\nC preprocessor<br \/>\n\u2193<br \/>\ncompile-time constants<br \/>\n\u2193<br \/>\nDriver<\/p>\n<p>\u6240\u4ee5&#xff1a;<br \/>\nDevicetree \u4e0d\u662f\u8fd0\u884c\u65f6\u6570\u636e\u5e93\u3002<br \/>\n\u8fd9\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u8ba4\u8bc6\u3002<br \/>\n\u5b83\u4e3b\u8981\u662f\u5728&#xff1a;<br \/>\n\u7f16\u8bd1\u9636\u6bb5\u63cf\u8ff0\u548c\u914d\u7f6e\u786c\u4ef6\u3002<\/p>\n<p>\u5341\u56db\u3001Binding \u4e0d\u7b49\u4e8e Driver<br \/>\n\u8fd9\u4e24\u4e2a\u4e00\u5b9a\u8981\u5206\u6e05\u3002<br \/>\nBinding<br \/>\n\u63cf\u8ff0&#xff1a;<\/p>\n<p>\u8fd9\u4e2a\u786c\u4ef6\u8282\u70b9\u6709\u4ec0\u4e48\u5c5e\u6027&#xff1f;<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>compatible:<br \/>\nreg:<br \/>\ninterrupts:<br \/>\nclocks:<br \/>\npinctrl-0:<\/p>\n<p>Driver<br \/>\n\u5b9e\u73b0&#xff1a;<\/p>\n<p>\u5982\u4f55\u64cd\u4f5c\u8fd9\u4e2a\u786c\u4ef6&#xff1f;<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>write_register<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nread_register<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nenable_interrupt<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nset_baudrate<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u6240\u4ee5&#xff1a;<\/p>\n<p>\u4e3a\u4e86\u66f4\u76f4\u89c2\u5730\u770b\u6e05\u4e09\u8005\u5dee\u5f02&#xff0c;\u8fd9\u91cc\u7528\u4e00\u5f20\u8868\u683c\u4ece\u4e94\u4e2a\u7ef4\u5ea6\u5bf9\u6bd4 Binding\u3001DTS\u3001Driver&#xff1a;<\/p>\n<table>\n<tr>\u7ef4\u5ea6BindingDTS&#xff08;Devicetree&#xff09;Driver<\/tr>\n<tbody>\n<tr>\n<td>\u5b9a\u4e49<\/td>\n<td>\u786c\u4ef6\u8282\u70b9\u7684&#034;\u6570\u636e\u5b57\u5178&#034;&#xff0c;\u5b9a\u4e49\u5c5e\u6027 schema<\/td>\n<td>\u63cf\u8ff0\u5177\u4f53\u786c\u4ef6\u5b9e\u4f8b\u7684\u6e90\u6587\u4ef6<\/td>\n<td>\u64cd\u4f5c\u786c\u4ef6\u7684\u4ee3\u7801\u5b9e\u73b0<\/td>\n<\/tr>\n<tr>\n<td>\u4f5c\u7528<\/td>\n<td>\u6821\u9a8c DTS \u8282\u70b9\u5c5e\u6027\u662f\u5426\u5408\u6cd5\u3001\u7c7b\u578b\u662f\u5426\u6b63\u786e<\/td>\n<td>\u63cf\u8ff0&#034;\u786c\u4ef6\u957f\u4ec0\u4e48\u6837&#034;&#xff08;\u5730\u5740\u3001\u4e2d\u65ad\u3001\u65f6\u949f\u7b49&#xff09;<\/td>\n<td>\u5b9e\u73b0&#034;\u5982\u4f55\u64cd\u4f5c\u786c\u4ef6&#034;&#xff08;\u8bfb\u5199\u5bc4\u5b58\u5668\u3001\u6536\u53d1\u6570\u636e\u7b49&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u5185\u5bb9<\/td>\n<td>compatible\u3001properties\u3001required \u7b49\u7ea6\u675f\u58f0\u660e<\/td>\n<td>compatible\u3001reg\u3001interrupts\u3001clocks\u3001status \u7b49\u8282\u70b9\u5c5e\u6027<\/td>\n<td>config\/data \u7ed3\u6784\u4f53\u3001\u521d\u59cb\u5316\u51fd\u6570\u3001API \u56de\u8c03\u3001DEVICE_DT_INST_DEFINE \u5b8f<\/td>\n<\/tr>\n<tr>\n<td>\u7f16\u8bd1\u671f\/\u8fd0\u884c\u671f<\/td>\n<td>\u7f16\u8bd1\u671f&#xff1a;\u88ab Devicetree Compiler \u8bfb\u53d6&#xff0c;\u7528\u4e8e\u6821\u9a8c\u548c\u751f\u6210\u5b8f<\/td>\n<td>\u7f16\u8bd1\u671f&#xff1a;\u88ab\u89e3\u6790\u540e\u751f\u6210\u5934\u6587\u4ef6&#xff08;generated devicetree information&#xff09;<\/td>\n<td>\u7f16\u8bd1\u671f\u751f\u6210 config \u5e38\u91cf&#xff0c;\u8fd0\u884c\u671f\u6267\u884c\u786c\u4ef6\u64cd\u4f5c<\/td>\n<\/tr>\n<tr>\n<td>\u793a\u4f8b<\/td>\n<td>compatible: &#034;mycompany,myuart&#034; &#043; properties: reg: required: true<\/td>\n<td>uart0: serial&#064;40000000 { compatible &#061; &#034;mycompany,myuart&#034;; reg &#061; &lt;0x40000000 0x1000&gt;; };<\/td>\n<td>#define DT_DRV_COMPAT mycompany_myuart &#043; DT_INST_REG_ADDR(inst) &#043; DEVICE_DT_INST_DEFINE(&#8230;)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u7b80\u5355\u6765\u8bf4&#xff1a;Binding \u5b9a\u4e49\u89c4\u5219&#xff0c;DTS \u63cf\u8ff0\u5b9e\u4f8b&#xff0c;Driver \u6267\u884c\u64cd\u4f5c\u3002\u4e09\u8005\u901a\u8fc7 compatible \u8fd9\u6761&#034;\u94a5\u5319&#034;\u4e32\u6210\u4e00\u6761\u5b8c\u6574\u7684\u94fe\u8def\u2014\u2014Binding \u6821\u9a8c DTS \u8282\u70b9\u662f\u5426\u5408\u6cd5&#xff0c;DTS \u4e3a Driver \u63d0\u4f9b\u7f16\u8bd1\u671f\u7684\u786c\u4ef6\u914d\u7f6e&#xff0c;Driver \u5219\u628a\u8fd9\u4e9b\u914d\u7f6e\u53d8\u6210\u771f\u6b63\u63a7\u5236\u786c\u4ef6\u7684\u4ee3\u7801\u3002<\/p>\n<p>Binding <span class=\"token operator\">&#061;<\/span> \u63cf\u8ff0\u786c\u4ef6<br \/>\nDriver <span class=\"token operator\">&#061;<\/span> \u64cd\u4f5c\u786c\u4ef6<\/p>\n<p>\u5341\u4e94\u3001Binding \u4e5f\u4e0d\u662f DTS<br \/>\n\u8fd8\u6709\u4e00\u4e2a\u5bb9\u6613\u6df7\u6dc6\u7684\u5730\u65b9&#xff1a;<\/p>\n<p>Binding<\/p>\n<p>\u4e0d\u662f&#xff1a;<\/p>\n<p>DTS<\/p>\n<p>\u4e09\u8005\u5173\u7cfb\u5e94\u8be5\u8bb0\u6210&#xff1a;<\/p>\n<p>Binding<br \/>\n\u2502<br \/>\n\u2502 defines schema<br \/>\n\u25bc<br \/>\nDTS<br \/>\n\u2502<br \/>\n\u2502 describes actual instance<br \/>\n\u25bc<br \/>\nDriver<\/p>\n<p>\u4f8b\u5982&#xff1a;<br \/>\nBinding<\/p>\n<p>compatible: <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><\/p>\n<p>properties:<br \/>\nreg:<br \/>\nrequired: <span class=\"token boolean\">true<\/span><\/p>\n<p>DTS<\/p>\n<p>uart0: serial&#064;40000000 <span class=\"token punctuation\">{<\/span><br \/>\ncompatible <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\nreg <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>lt<span class=\"token punctuation\">;<\/span>0x40000000 0x1000<span class=\"token operator\">&amp;<\/span>gt<span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>Driver<\/p>\n<p><span class=\"token comment\"># define DT_DRV_COMPAT mycompany_myuart<\/span><\/p>\n<p>\u5341\u516d\u3001\u8fdb\u4e00\u6b65\u7406\u89e3 SoC BSP \u7684\u804c\u8d23\u8fb9\u754c<\/p>\n<p>\u5230\u4e86\u8fd9\u91cc&#xff0c;\u4f60\u53ef\u4ee5\u5f00\u59cb\u5efa\u7acb\u4e0b\u9762\u8fd9\u5f20\u5730\u56fe&#xff1a;<\/p>\n<p> Zephyr<br \/>\n     \u2502<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502                   \u2502<br \/>\nApplication       Kernel<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nZephyr API<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nDriver<br \/>\n\u2502<br \/>\n   \u250c\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n   \u2502          \u2502<br \/>\nDevicetree   HAL<br \/>\n   \u2502          \u2502<br \/>\n   \u2514\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n        \u25bc<br \/>\n       SoC<br \/>\n        \u2502<br \/>\n  \u250c\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n  \u25bc     \u25bc     \u25bc<br \/>\nUART   GPIO   SPI<\/p>\n<p>\u800c SoC Porting \u672c\u8eab\u53c8\u5305\u542b&#xff1a;<\/p>\n<p>Architecture<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nSoC<br \/>\n\u2502<br \/>\n\u251c\u2500\u2500 clock<br \/>\n\u251c\u2500\u2500 interrupt<br \/>\n\u251c\u2500\u2500 timer<br \/>\n\u251c\u2500\u2500 uart<br \/>\n\u251c\u2500\u2500 gpio<br \/>\n\u251c\u2500\u2500 spi<br \/>\n\u251c\u2500\u2500 i2c<br \/>\n\u2514\u2500\u2500 <span class=\"token punctuation\">..<\/span>.<\/p>\n<p>\u5341\u4e03\u3001\u516c\u53f8 SoC \u771f\u6b63\u8fdb\u5165 Zephyr \u540e&#xff0c;\u4f60\u4f1a\u505a\u4ec0\u4e48&#xff1f;<br \/>\n\u5047\u8bbe\u4f60\u7684\u516c\u53f8 SoC \u53eb&#xff1a;<br \/>\nACME-X1<br \/>\n\u90a3\u4e48\u6700\u7ec8\u76ee\u5f55\u53ef\u80fd\u9010\u6e10\u5f62\u6210&#xff1a;<\/p>\n<p>zephyr\/<br \/>\n\u251c\u2500\u2500 arch\/<br \/>\n\u2502<br \/>\n\u251c\u2500\u2500 soc\/<br \/>\n\u2502 \u2514\u2500\u2500 acme\/<br \/>\n\u2502 \u2514\u2500\u2500 acme-x1\/<br \/>\n\u2502 \u251c\u2500\u2500 CMakeLists.txt<br \/>\n\u2502 \u251c\u2500\u2500 Kconfig<br \/>\n\u2502 \u251c\u2500\u2500 Kconfig.defconfig<br \/>\n\u2502 \u251c\u2500\u2500 soc.h<br \/>\n\u2502 \u2514\u2500\u2500 <span class=\"token punctuation\">..<\/span>.<br \/>\n\u2502<br \/>\n\u251c\u2500\u2500 dts\/<br \/>\n\u2502 \u251c\u2500\u2500 arm\/<br \/>\n\u2502 \u2514\u2500\u2500 bindings\/<br \/>\n\u2502 \u251c\u2500\u2500 serial\/<br \/>\n\u2502 \u2502 \u2514\u2500\u2500 acme,uart.yaml<br \/>\n\u2502 \u251c\u2500\u2500 gpio\/<br \/>\n\u2502 \u2502 \u2514\u2500\u2500 acme,gpio.yaml<br \/>\n\u2502 \u2514\u2500\u2500 timer\/<br \/>\n\u2502 \u2514\u2500\u2500 acme,timer.yaml<br \/>\n\u2502<br \/>\n\u2514\u2500\u2500 drivers\/<br \/>\n\u251c\u2500\u2500 serial\/<br \/>\n\u2502 \u2514\u2500\u2500 uart_acme.c<br \/>\n\u251c\u2500\u2500 gpio\/<br \/>\n\u2502 \u2514\u2500\u2500 gpio_acme.c<br \/>\n\u2514\u2500\u2500 timer\/<br \/>\n\u2514\u2500\u2500 timer_acme.c<\/p>\n<p>\u8fd9\u65f6\u5019\u4f60\u5df2\u7ecf\u5f00\u59cb\u771f\u6b63\u505a&#xff1a;<br \/>\n\u516c\u53f8 SoC \u2192 Zephyr BSP<br \/>\n\u800c\u4e0d\u662f\u7b80\u5355\u505a\u4e00\u4e2a Board\u3002<\/p>\n<p>\u5341\u516b\u3001\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u5206\u754c\u7ebf<br \/>\n\u4ee5\u540e\u4f60\u770b\u5230\u4e00\u4e2a\u5916\u8bbe\u95ee\u9898&#xff0c;\u53ef\u4ee5\u5148\u95ee&#xff1a;<br \/>\n\u95ee\u9898 1&#xff1a;\u8fd9\u662f\u786c\u4ef6\u63cf\u8ff0\u95ee\u9898\u5417&#xff1f;<br \/>\n\u4f8b\u5982&#xff1a;<\/p>\n<p>UART \u5730\u5740\u662f\u591a\u5c11&#xff1f;<br \/>\nIRQ \u662f\u591a\u5c11&#xff1f;<br \/>\nclock \u662f\u54ea\u4e2a&#xff1f;<br \/>\nGPIO controller \u662f\u54ea\u4e2a&#xff1f;<\/p>\n<p>\u90a3\u4e48\u4f18\u5148\u770b&#xff1a;<\/p>\n<p>Devicetree \/ Binding<\/p>\n<p>\u95ee\u9898 2&#xff1a;\u8fd9\u662f\u786c\u4ef6\u64cd\u4f5c\u95ee\u9898\u5417&#xff1f;<br \/>\n\u4f8b\u5982&#xff1a;<\/p>\n<p>UART \u600e\u4e48\u53d1\u9001&#xff1f;<br \/>\nGPIO \u600e\u4e48\u8bbe\u7f6e\u65b9\u5411&#xff1f;<br \/>\nSPI \u600e\u4e48\u542f\u52a8&#xff1f;<\/p>\n<p>\u90a3\u4e48\u770b&#xff1a;<\/p>\n<p>Driver<\/p>\n<p>\u95ee\u9898 3&#xff1a;\u8fd9\u662f SoC \u521d\u59cb\u5316\u95ee\u9898\u5417&#xff1f;<br \/>\n\u4f8b\u5982&#xff1a;<\/p>\n<p>clock tree<br \/>\ninterrupt controller<br \/>\nsystem timer<br \/>\nlow-level startup<\/p>\n<p>\u90a3\u4e48\u770b&#xff1a;<\/p>\n<p>SoC Porting<\/p>\n<p>\u95ee\u9898 4&#xff1a;\u8fd9\u662f\u677f\u7ea7\u8fde\u63a5\u95ee\u9898\u5417&#xff1f;<br \/>\n\u4f8b\u5982&#xff1a;<\/p>\n<p>UART0 \u63a5\u5230\u4e86\u54ea\u4e2a pin&#xff1f;<br \/>\nLED \u63a5 GPIOA5&#xff1f;<br \/>\nSPI flash \u63a5 SPI1&#xff1f;<\/p>\n<p>\u90a3\u4e48\u770b&#xff1a;<\/p>\n<p>Board DTS \/ Board overlay<\/p>\n<p>\u5341\u4e5d\u3001\u4f60\u73b0\u5728\u5e94\u8be5\u91cd\u70b9\u638c\u63e1\u7684 5 \u4e2a\u6982\u5ff5<br \/>\n\u8fd9\u4e00\u7bc7\u4e0d\u8981\u6025\u7740\u80cc Driver API\u3002<br \/>\n\u5148\u771f\u6b63\u7406\u89e3&#xff1a;<\/p>\n<p>\u2460 compatible<\/p>\n<p>\u2461 Binding<\/p>\n<p>\u2462 Devicetree instance<\/p>\n<p>\u2463 DT_<span class=\"token punctuation\">\\\\<\/span>* macros<\/p>\n<p>\u2464 DEVICE_DT_INST_DEFINE<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5982\u679c\u8fd9\u4e94\u4e2a\u4e1c\u897f\u641e\u660e\u767d&#xff0c;\u540e\u9762\u7684 Zephyr Driver \u4f1a\u5bb9\u6613\u5f88\u591a\u3002<br \/>\n\u5c24\u5176\u662f\u8fd9\u6761&#xff1a;<\/p>\n<p>compatible<br \/>\n\u2193<br \/>\nBinding<br \/>\n\u2193<br \/>\nDTS <span class=\"token function\">node<\/span><br \/>\n\u2193<br \/>\nDT_INST_<span class=\"token punctuation\">\\\\<\/span>*<br \/>\n\u2193<br \/>\nDriver instance<br \/>\n\u2193<br \/>\nDEVICE_DT_INST_DEFINE<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8fd9\u662f\u4ee5\u540e\u4f60\u7ed9\u516c\u53f8 SoC \u5199 Driver \u65f6\u6700\u5e38\u89c1\u7684\u4e00\u6761\u94fe\u3002<\/p>\n<p>\u4e8c\u5341\u3001\u5efa\u8bae\u4e0b\u4e00\u7bc7&#xff1a;08-\u7b2c\u4e00\u4e2a SoC Driver<br \/>\n\u5341\u4e5d\u70b9\u4e94\u3001UART Driver \u6700\u5c0f\u5b9e\u6218&#xff1a;\u4ece Binding \u5230 Driver \u7684\u5b8c\u6574\u94fe\u8def<\/p>\n<p>\u524d\u9762\u6211\u4eec\u62c6\u89e3\u4e86\u6982\u5ff5&#xff0c;\u8fd9\u91cc\u76f4\u63a5\u7ed9\u51fa\u4e00\u5957\u53ef\u8fd0\u884c\u7684\u6700\u5c0f UART Driver \u5b8c\u6574\u4ee3\u7801&#xff0c;\u628a Binding YAML\u3001Devicetree \u8282\u70b9\u3001Driver \u521d\u59cb\u5316\u51fd\u6570\u548c DEVICE_DT_INST_DEFINE \u5b8f\u4e32\u6210\u4e00\u6761\u5b8c\u6574\u7684\u94fe\u8def\u3002\u5efa\u8bae\u4f60\u5bf9\u7167\u7740\u9010\u884c\u9605\u8bfb&#xff0c;\u7406\u89e3\u6bcf\u4e00\u90e8\u5206\u5728\u6574\u4e2a\u4f53\u7cfb\u4e2d\u7684\u4f4d\u7f6e\u3002<\/p>\n<p>1. Binding YAML&#xff1a;\u5b9a\u4e49\u786c\u4ef6\u8282\u70b9\u7684\u5c5e\u6027 schema<\/p>\n<p>\u6587\u4ef6\u8def\u5f84&#xff1a;dts\/bindings\/serial\/mycompany,myuart.yaml<\/p>\n<p><span class=\"token comment\"># Binding YAML \u7684\u4f5c\u7528&#xff1a;\u544a\u8bc9 Zephyr \u4e00\u4e2a compatible \u4e3a &#034;mycompany,myuart&#034; \u7684<\/span><br \/>\n<span class=\"token comment\"># Devicetree \u8282\u70b9\u5141\u8bb8\u6709\u54ea\u4e9b\u5c5e\u6027&#xff0c;\u4ee5\u53ca\u6bcf\u4e2a\u5c5e\u6027\u7684\u7c7b\u578b\u548c\u662f\u5426\u5fc5\u586b\u3002<\/span><br \/>\n<span class=\"token comment\"># \u5b83\u76f8\u5f53\u4e8e&#034;\u786c\u4ef6\u8282\u70b9\u7684\u6570\u636e\u5b57\u5178&#034;&#xff0c;\u662f Devicetree \u6821\u9a8c\u548c\u751f\u6210\u5b8f\u7684\u4f9d\u636e\u3002<\/span><\/p>\n<p><span class=\"token key atrule\">description<\/span><span class=\"token punctuation\">:<\/span> MyCompany UART controller<\/p>\n<p><span class=\"token comment\"># compatible \u662f Binding \u4e0e Devicetree \u8282\u70b9\u4e4b\u95f4\u7684&#034;\u94a5\u5319&#034;\u3002<\/span><br \/>\n<span class=\"token comment\"># \u53ea\u6709 compatible \u5b8c\u5168\u5339\u914d&#xff0c;\u8fd9\u4e2a Binding \u624d\u4f1a\u88ab\u5e94\u7528\u5230\u5bf9\u5e94\u7684\u8282\u70b9\u4e0a\u3002<\/span><br \/>\n<span class=\"token key atrule\">compatible<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><\/p>\n<p><span class=\"token comment\"># include \u8868\u793a\u7ee7\u627f\u5176\u4ed6 Binding \u7684\u516c\u5171\u5b9a\u4e49&#xff0c;\u4f8b\u5982 base.yaml \u91cc\u901a\u5e38\u5305\u542b<\/span><br \/>\n<span class=\"token comment\"># reg\u3001interrupts \u7b49\u901a\u7528\u5c5e\u6027\u7684\u57fa\u7840 schema\u3002<\/span><br \/>\n<span class=\"token key atrule\">include<\/span><span class=\"token punctuation\">:<\/span><br \/>\n  <span class=\"token punctuation\">&#8211;<\/span> <span class=\"token key atrule\">name<\/span><span class=\"token punctuation\">:<\/span> base.yaml<\/p>\n<p><span class=\"token comment\"># properties \u5b9a\u4e49\u8fd9\u4e2a\u8282\u70b9\u5141\u8bb8\u51fa\u73b0\u7684\u5c5e\u6027\u53ca\u5176\u7ea6\u675f\u3002<\/span><br \/>\n<span class=\"token key atrule\">properties<\/span><span class=\"token punctuation\">:<\/span><br \/>\n  <span class=\"token key atrule\">reg<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token comment\"># reg \u63cf\u8ff0\u786c\u4ef6\u5bc4\u5b58\u5668\u57fa\u5730\u5740\u548c\u957f\u5ea6&#xff0c;\u7c7b\u578b\u662f array&#xff08;\u6570\u7ec4&#xff09;\u3002<\/span><br \/>\n    <span class=\"token comment\"># \u5b83\u4f1a\u88ab\u7f16\u8bd1\u6210 DT_INST_REG_ADDR(inst) \u7b49\u5b8f\u3002<\/span><br \/>\n    <span class=\"token key atrule\">required<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token boolean important\">true<\/span><\/p>\n<p>  <span class=\"token key atrule\">interrupts<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token comment\"># interrupts \u63cf\u8ff0\u786c\u4ef6\u4e2d\u65ad\u53f7&#xff0c;\u7c7b\u578b\u662f array\u3002<\/span><br \/>\n    <span class=\"token comment\"># \u5b83\u4f1a\u88ab\u7f16\u8bd1\u6210 DT_INST_IRQ(inst) \u7b49\u5b8f\u3002<\/span><br \/>\n    <span class=\"token key atrule\">required<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token boolean important\">true<\/span><\/p>\n<p>  <span class=\"token key atrule\">clocks<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token comment\"># clocks \u63cf\u8ff0\u65f6\u949f\u6e90&#xff0c;\u7c7b\u578b\u662f phandle-array&#xff08;\u6307\u5411\u65f6\u949f\u63a7\u5236\u5668\u7684\u53e5\u67c4\u6570\u7ec4&#xff09;\u3002<\/span><br \/>\n    <span class=\"token comment\"># \u5b83\u4f1a\u88ab\u7f16\u8bd1\u6210 DT_INST_CLOCKS_&#8230;(inst) \u7b49\u5b8f\u3002<\/span><br \/>\n    <span class=\"token key atrule\">required<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token boolean important\">true<\/span><\/p>\n<p>2. Devicetree \u8282\u70b9&#xff1a;\u63cf\u8ff0\u5177\u4f53\u7684\u786c\u4ef6\u5b9e\u4f8b<\/p>\n<p>\u6587\u4ef6\u8def\u5f84&#xff1a;dts\/arm\/mycompany\/mycompany_x1.dtsi&#xff08;SoC \u7ea7&#xff09;\u6216\u677f\u7ea7 DTS \u4e2d<\/p>\n<p>\/\/ Devicetree \u8282\u70b9\u7684\u4f5c\u7528&#xff1a;\u63cf\u8ff0 SoC \u4e0a\u771f\u5b9e\u5b58\u5728\u7684 UART \u786c\u4ef6\u5b9e\u4f8b\u3002<br \/>\n\/\/ \u5b83\u544a\u8bc9 Zephyr&#xff1a;&#034;\u8fd9\u91cc\u6709\u4e00\u4e2a UART&#xff0c;\u5b83\u7684\u5730\u5740\u3001\u4e2d\u65ad\u3001\u65f6\u949f\u5206\u522b\u662f\u4ec0\u4e48&#034;\u3002<br \/>\n\/\/ \u6ce8\u610f&#xff1a;\u8fd9\u91cc\u53ea\u63cf\u8ff0&#034;\u786c\u4ef6\u957f\u4ec0\u4e48\u6837&#034;&#xff0c;\u4e0d\u5305\u542b\u4efb\u4f55\u64cd\u4f5c\u903b\u8f91\u3002<\/p>\n<p>uart0: serial&#064;40000000 {<br \/>\n    \/\/ compatible \u5fc5\u987b\u4e0e Binding YAML \u4e2d\u7684 compatible \u5b8c\u5168\u4e00\u81f4&#xff0c;<br \/>\n    \/\/ \u5426\u5219 Zephyr \u65e0\u6cd5\u628a\u8282\u70b9\u548c Binding\u3001Driver \u5173\u8054\u8d77\u6765\u3002<br \/>\n    compatible &#061; &#034;mycompany,myuart&#034;;<\/p>\n<p>    \/\/ reg \u63cf\u8ff0\u5bc4\u5b58\u5668\u57fa\u5730\u5740 0x40000000 \u548c\u6620\u5c04\u957f\u5ea6 0x1000\u3002<br \/>\n    \/\/ \u5bf9\u5e94 Binding \u4e2d\u7684 reg \u5c5e\u6027&#xff0c;\u4f1a\u88ab\u7f16\u8bd1\u6210 DT_INST_REG_ADDR(0)\u3002<br \/>\n    reg &#061; &lt;0x40000000 0x1000&gt;;<\/p>\n<p>    \/\/ interrupts \u63cf\u8ff0\u4e2d\u65ad\u53f7 32\u3002<br \/>\n    \/\/ \u5bf9\u5e94 Binding \u4e2d\u7684 interrupts \u5c5e\u6027&#xff0c;\u4f1a\u88ab\u7f16\u8bd1\u6210 DT_INST_IRQ(0)\u3002<br \/>\n    interrupts &#061; &lt;32&gt;;<\/p>\n<p>    \/\/ clocks \u63cf\u8ff0\u65f6\u949f\u6e90&#xff0c;&amp;clk \u6307\u5411\u65f6\u949f\u63a7\u5236\u5668\u8282\u70b9&#xff0c;UART0_CLK \u662f\u65f6\u949f\u7f16\u53f7\u3002<br \/>\n    \/\/ \u5bf9\u5e94 Binding \u4e2d\u7684 clocks \u5c5e\u6027\u3002<br \/>\n    clocks &#061; &lt;&amp;clk UART0_CLK&gt;;<\/p>\n<p>    \/\/ status &#061; &#034;okay&#034; \u8868\u793a\u8be5\u5b9e\u4f8b\u542f\u7528\u3002<br \/>\n    \/\/ \u53ea\u6709 status \u4e3a &#034;okay&#034; \u7684\u8282\u70b9\u624d\u4f1a\u88ab DT_INST_FOREACH_STATUS_OKAY \u904d\u5386\u5230\u3002<br \/>\n    status &#061; &#034;okay&#034;;<br \/>\n};<\/p>\n<p>uart1: serial&#064;40001000 {<br \/>\n    \/\/ \u7b2c\u4e8c\u4e2a\u5b9e\u4f8b&#xff1a;compatible \u76f8\u540c&#xff0c;\u4f46 reg \u548c interrupts \u4e0d\u540c\u3002<br \/>\n    \/\/ \u8fd9\u6b63\u4f53\u73b0\u4e86&#034;\u4e00\u4e2a Driver \u670d\u52a1\u591a\u4e2a\u786c\u4ef6\u5b9e\u4f8b&#034;\u7684\u80fd\u529b\u3002<br \/>\n    compatible &#061; &#034;mycompany,myuart&#034;;<br \/>\n    reg &#061; &lt;0x40001000 0x1000&gt;;<br \/>\n    interrupts &#061; &lt;33&gt;;<br \/>\n    clocks &#061; &lt;&amp;clk UART1_CLK&gt;;<br \/>\n    status &#061; &#034;okay&#034;;<br \/>\n};<\/p>\n<p>3. Driver \u521d\u59cb\u5316\u51fd\u6570&#xff1a;\u5b9e\u73b0\u786c\u4ef6\u7684\u5177\u4f53\u64cd\u4f5c<\/p>\n<p>\u6587\u4ef6\u8def\u5f84&#xff1a;drivers\/serial\/uart_mycompany.c<\/p>\n<p><span class=\"token comment\">\/*<br \/>\n * UART Driver \u7684\u4f5c\u7528&#xff1a;\u5b9e\u73b0&#034;\u5982\u4f55\u64cd\u4f5c\u8fd9\u4e2a\u786c\u4ef6&#034;\u3002<br \/>\n * \u5b83\u901a\u8fc7 Devicetree \u751f\u6210\u7684\u5b8f&#xff08;DT_INST_*&#xff09;\u8bfb\u53d6\u786c\u4ef6\u914d\u7f6e&#xff0c;<br \/>\n * \u800c\u4e0d\u662f\u628a\u5730\u5740\u3001\u4e2d\u65ad\u53f7\u786c\u7f16\u7801\u5728\u4ee3\u7801\u91cc\u3002<br \/>\n *\/<\/span><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;zephyr\/kernel.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;zephyr\/device.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;zephyr\/drivers\/uart.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;zephyr\/devicetree.h&gt;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/* \u5173\u952e\u5b8f&#xff1a;\u58f0\u660e\u672c Driver \u670d\u52a1\u7684 compatible \u5b57\u7b26\u4e32\u3002<br \/>\n * \u6ce8\u610f&#xff1a;\u9017\u53f7\u8981\u66ff\u6362\u6210\u4e0b\u5212\u7ebf&#xff0c;\u5373 &#034;mycompany,myuart&#034; -&gt; mycompany_myuart\u3002<br \/>\n * \u8fd9\u4e2a\u5b8f\u51b3\u5b9a\u4e86 DT_INST_* \u7cfb\u5217\u5b8f\u5c55\u5f00\u65f6\u67e5\u627e\u54ea\u4e2a compatible \u7684\u8282\u70b9\u3002 *\/<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">DT_DRV_COMPAT<\/span> <span class=\"token expression\">mycompany_myuart<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/* config \u7ed3\u6784\u4f53&#xff1a;\u4fdd\u5b58&#034;\u8fd9\u4e2a UART \u662f\u4ec0\u4e48\u786c\u4ef6&#034;\u7684\u7f16\u8bd1\u671f\u5e38\u91cf\u3002<br \/>\n * \u8fd9\u4e9b\u503c\u5168\u90e8\u6765\u81ea Devicetree&#xff0c;\u7531 DT_INST_REG_ADDR \u7b49\u5b8f\u5728\u7f16\u8bd1\u671f\u751f\u6210\u3002 *\/<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">uintptr_t<\/span> base<span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/* \u5bc4\u5b58\u5668\u57fa\u5730\u5740&#xff0c;\u6765\u81ea reg \u5c5e\u6027 *\/<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> irq<span class=\"token punctuation\">;<\/span>          <span class=\"token comment\">\/* \u4e2d\u65ad\u53f7&#xff0c;\u6765\u81ea interrupts \u5c5e\u6027 *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/* data \u7ed3\u6784\u4f53&#xff1a;\u4fdd\u5b58&#034;\u8fd9\u4e2a UART \u5f53\u524d\u5904\u4e8e\u4ec0\u4e48\u72b6\u6001&#034;\u7684\u8fd0\u884c\u65f6\u6570\u636e\u3002<br \/>\n * \u4f8b\u5982\u5f53\u524d\u6ce2\u7279\u7387\u3001\u6536\u53d1\u7f13\u51b2\u72b6\u6001\u7b49\u3002 *\/<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_data<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">uint32_t<\/span> baudrate<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/* \u5f53\u524d\u6ce2\u7279\u7387&#xff0c;\u8fd0\u884c\u65f6\u7531\u5e94\u7528\u8bbe\u7f6e *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/* \u521d\u59cb\u5316\u51fd\u6570&#xff1a;\u8bbe\u5907\u542f\u52a8\u65f6\u88ab Zephyr \u5185\u6838\u8c03\u7528\u4e00\u6b21\u3002<br \/>\n * \u804c\u8d23&#xff1a;\u6253\u5f00\u65f6\u949f\u3001\u914d\u7f6e\u5bc4\u5b58\u5668\u3001\u6ce8\u518c\u4e2d\u65ad&#xff0c;\u8ba9\u786c\u4ef6\u8fdb\u5165\u53ef\u7528\u72b6\u6001\u3002 *\/<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">myuart_init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">device<\/span> <span class=\"token operator\">*<\/span>dev<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> <span class=\"token operator\">*<\/span>config <span class=\"token operator\">&#061;<\/span> dev<span class=\"token operator\">-&gt;<\/span>config<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_data<\/span> <span class=\"token operator\">*<\/span>data <span class=\"token operator\">&#061;<\/span> dev<span class=\"token operator\">-&gt;<\/span>data<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 1. \u6253\u5f00\u65f6\u949f&#xff1a;\u8fd9\u91cc\u901a\u8fc7 Devicetree \u7684 clocks \u5c5e\u6027\u62ff\u5230\u65f6\u949f\u53e5\u67c4&#xff0c;<br \/>\n     *    \u5b9e\u9645\u9879\u76ee\u4e2d\u4f1a\u8c03\u7528 clock \u5b50\u7cfb\u7edf API \u4f7f\u80fd UART \u65f6\u949f\u3002 *\/<\/span><br \/>\n    <span class=\"token comment\">\/* clock_enable(config-&gt;clocks); *\/<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 2. \u914d\u7f6e\u5bc4\u5b58\u5668&#xff1a;\u901a\u8fc7 config-&gt;base \u8bbf\u95ee\u786c\u4ef6\u5bc4\u5b58\u5668&#xff0c;<br \/>\n     *    \u4f8b\u5982\u8bbe\u7f6e\u6ce2\u7279\u7387\u3001\u6570\u636e\u4f4d\u3001\u505c\u6b62\u4f4d\u7b49\u3002 *\/<\/span><br \/>\n    <span class=\"token comment\">\/* sys_write32(baudrate_value, config-&gt;base &#043; UART_BAUD_REG); *\/<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 3. \u914d\u7f6e\u4e2d\u65ad&#xff1a;\u6ce8\u518c\u4e2d\u65ad\u5904\u7406\u51fd\u6570\u5e76\u542f\u7528\u4e2d\u65ad\u3002 *\/<\/span><br \/>\n    <span class=\"token comment\">\/* irq_connect_dynamic(config-&gt;irq, 0, myuart_isr, dev, 0); *\/<\/span><br \/>\n    <span class=\"token comment\">\/* irq_enable(config-&gt;irq); *\/<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 4. \u521d\u59cb\u5316\u8fd0\u884c\u65f6\u6570\u636e\u3002 *\/<\/span><br \/>\n    data<span class=\"token operator\">-&gt;<\/span>baudrate <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">115200<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/* \u5bc4\u5b58\u5668\u504f\u79fb\u5b9a\u4e49&#xff1a;\u8fd9\u91cc\u4ee5\u5e38\u89c1\u7684 16550 \u517c\u5bb9 UART \u5bc4\u5b58\u5668\u5e03\u5c40\u4e3a\u4f8b\u3002<br \/>\n * \u5b9e\u9645\u9879\u76ee\u4e2d\u5e94\u6839\u636e\u516c\u53f8 SoC \u7684 TRM&#xff08;\u6280\u672f\u53c2\u8003\u624b\u518c&#xff09;\u4fee\u6539\u8fd9\u4e9b\u504f\u79fb\u503c\u3002 *\/<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">MYUART_REG_THR<\/span>       <span class=\"token expression\"><span class=\"token number\">0x00<\/span>   <\/span><span class=\"token comment\">\/* \u53d1\u9001\u4fdd\u6301\u5bc4\u5b58\u5668&#xff08;\u5199&#xff09; *\/<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">MYUART_REG_RBR<\/span>       <span class=\"token expression\"><span class=\"token number\">0x00<\/span>   <\/span><span class=\"token comment\">\/* \u63a5\u6536\u7f13\u51b2\u5bc4\u5b58\u5668&#xff08;\u8bfb&#xff09; *\/<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">MYUART_REG_LSR<\/span>       <span class=\"token expression\"><span class=\"token number\">0x14<\/span>   <\/span><span class=\"token comment\">\/* \u7ebf\u8def\u72b6\u6001\u5bc4\u5b58\u5668 *\/<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">MYUART_LSR_TX_READY<\/span>  <span class=\"token expression\"><span class=\"token function\">BIT<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span> <\/span><span class=\"token comment\">\/* \u53d1\u9001\u4fdd\u6301\u5bc4\u5b58\u5668\u7a7a *\/<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">MYUART_LSR_RX_READY<\/span>  <span class=\"token expression\"><span class=\"token function\">BIT<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <\/span><span class=\"token comment\">\/* \u63a5\u6536\u6570\u636e\u5c31\u7eea *\/<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/* \u8f6e\u8be2\u53d1\u9001\u4e00\u4e2a\u5b57\u8282&#xff1a;\u5e94\u7528\u8c03\u7528 uart_poll_out() \u65f6\u8fdb\u5165\u6b64\u51fd\u6570\u3002<br \/>\n * \u5b83\u901a\u8fc7 config-&gt;base \u76f4\u63a5\u64cd\u4f5c\u786c\u4ef6\u5bc4\u5b58\u5668&#xff0c;\u800c\u4e0d\u662f\u786c\u7f16\u7801\u5730\u5740\u3002 *\/<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">myuart_poll_out<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">device<\/span> <span class=\"token operator\">*<\/span>dev<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">char<\/span> c<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> <span class=\"token operator\">*<\/span>config <span class=\"token operator\">&#061;<\/span> dev<span class=\"token operator\">-&gt;<\/span>config<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">volatile<\/span> <span class=\"token class-name\">uint32_t<\/span> <span class=\"token operator\">*<\/span>base <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">volatile<\/span> <span class=\"token class-name\">uint32_t<\/span> <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span>config<span class=\"token operator\">-&gt;<\/span>base<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 1. \u7b49\u5f85\u53d1\u9001\u4fdd\u6301\u5bc4\u5b58\u5668\u7a7a\u95f2&#xff08;TX FIFO \u6709\u7a7a\u4f4d&#xff09;\u3002<br \/>\n     *    \u8f6e\u8be2 LSR \u7684 TX_READY \u4f4d&#xff0c;\u76f4\u5230\u786c\u4ef6\u53ef\u4ee5\u63a5\u6536\u65b0\u6570\u636e\u3002 *\/<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">sys_read32<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uintptr_t<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;<\/span>base<span class=\"token punctuation\">[<\/span>MYUART_REG_LSR <span class=\"token operator\">\/<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;<\/span><br \/>\n             MYUART_LSR_TX_READY<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/* \u5fd9\u7b49\u5f85&#xff0c;\u76f4\u5230\u53d1\u9001\u5bc4\u5b58\u5668\u7a7a\u95f2 *\/<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 2. \u628a\u8981\u53d1\u9001\u7684\u5b57\u8282\u5199\u5165\u53d1\u9001\u4fdd\u6301\u5bc4\u5b58\u5668&#xff08;THR&#xff09;\u3002<br \/>\n     *    \u786c\u4ef6\u4f1a\u81ea\u52a8\u628a\u8be5\u5b57\u8282\u79fb\u4f4d\u8f93\u51fa\u5230 TX \u5f15\u811a\u3002 *\/<\/span><br \/>\n    <span class=\"token function\">sys_write32<\/span><span class=\"token punctuation\">(<\/span>c<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uintptr_t<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;<\/span>base<span class=\"token punctuation\">[<\/span>MYUART_REG_THR <span class=\"token operator\">\/<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/* \u8f6e\u8be2\u63a5\u6536\u4e00\u4e2a\u5b57\u8282&#xff1a;\u5e94\u7528\u8c03\u7528 uart_poll_in() \u65f6\u8fdb\u5165\u6b64\u51fd\u6570\u3002<br \/>\n * \u8fd4\u56de\u503c&#xff1a;0 \u8868\u793a\u6210\u529f\u6536\u5230\u4e00\u4e2a\u5b57\u8282\u5e76\u5b58\u5165 *c&#xff1b;-1 \u8868\u793a\u5f53\u524d\u6ca1\u6709\u6570\u636e\u53ef\u8bfb\u3002 *\/<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">myuart_poll_in<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">device<\/span> <span class=\"token operator\">*<\/span>dev<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>c<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> <span class=\"token operator\">*<\/span>config <span class=\"token operator\">&#061;<\/span> dev<span class=\"token operator\">-&gt;<\/span>config<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">volatile<\/span> <span class=\"token class-name\">uint32_t<\/span> <span class=\"token operator\">*<\/span>base <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">volatile<\/span> <span class=\"token class-name\">uint32_t<\/span> <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span>config<span class=\"token operator\">-&gt;<\/span>base<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 1. \u68c0\u67e5\u63a5\u6536\u6570\u636e\u5c31\u7eea\u4f4d&#xff08;RX_READY&#xff09;\u3002<br \/>\n     *    \u5982\u679c\u786c\u4ef6\u8fd8\u6ca1\u6709\u6536\u5230\u5b8c\u6574\u5b57\u8282&#xff0c;\u76f4\u63a5\u8fd4\u56de -1&#xff0c;\u4e0d\u963b\u585e\u8c03\u7528\u8005\u3002 *\/<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">sys_read32<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uintptr_t<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;<\/span>base<span class=\"token punctuation\">[<\/span>MYUART_REG_LSR <span class=\"token operator\">\/<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;<\/span><br \/>\n          MYUART_LSR_RX_READY<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 2. \u4ece\u63a5\u6536\u7f13\u51b2\u5bc4\u5b58\u5668&#xff08;RBR&#xff09;\u8bfb\u51fa\u4e00\u4e2a\u5b57\u8282\u3002 *\/<\/span><br \/>\n    <span class=\"token operator\">*<\/span>c <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">char<\/span><span class=\"token punctuation\">)<\/span><span class=\"token function\">sys_read32<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uintptr_t<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;<\/span>base<span class=\"token punctuation\">[<\/span>MYUART_REG_RBR <span class=\"token operator\">\/<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/* \u914d\u7f6e UART \u53c2\u6570&#xff1a;\u5e94\u7528\u8c03\u7528 uart_configure() \u65f6\u8fdb\u5165\u6b64\u51fd\u6570\u3002<br \/>\n * \u8fd9\u91cc\u5b9e\u73b0\u6ce2\u7279\u7387\u3001\u6570\u636e\u4f4d\u3001\u6821\u9a8c\u4f4d\u3001\u505c\u6b62\u4f4d\u7684\u914d\u7f6e\u903b\u8f91\u3002<br \/>\n * \u8fd4\u56de\u503c&#xff1a;0 \u8868\u793a\u914d\u7f6e\u6210\u529f&#xff1b;-ENOTSUP \u8868\u793a\u4e0d\u652f\u6301\u7684\u53c2\u6570\u7ec4\u5408\u3002 *\/<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">myuart_cfg_set<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">device<\/span> <span class=\"token operator\">*<\/span>dev<span class=\"token punctuation\">,<\/span><br \/>\n                          <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">uart_config<\/span> <span class=\"token operator\">*<\/span>cfg<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> <span class=\"token operator\">*<\/span>config <span class=\"token operator\">&#061;<\/span> dev<span class=\"token operator\">-&gt;<\/span>config<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_data<\/span> <span class=\"token operator\">*<\/span>data <span class=\"token operator\">&#061;<\/span> dev<span class=\"token operator\">-&gt;<\/span>data<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">volatile<\/span> <span class=\"token class-name\">uint32_t<\/span> <span class=\"token operator\">*<\/span>base <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">volatile<\/span> <span class=\"token class-name\">uint32_t<\/span> <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span>config<span class=\"token operator\">-&gt;<\/span>base<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 1. \u6821\u9a8c\u53c2\u6570&#xff1a;\u672c\u793a\u4f8b\u53ea\u652f\u6301 8 \u6570\u636e\u4f4d\u3001\u65e0\u6821\u9a8c\u30011 \u505c\u6b62\u4f4d\u3002<br \/>\n     *    \u5b9e\u9645 Driver \u5e94\u6839\u636e SoC \u80fd\u529b\u6269\u5c55\u652f\u6301\u8303\u56f4\u3002 *\/<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>cfg<span class=\"token operator\">-&gt;<\/span>data_bits <span class=\"token operator\">!&#061;<\/span> UART_CFG_DATA_BITS_8 <span class=\"token operator\">||<\/span><br \/>\n        cfg<span class=\"token operator\">-&gt;<\/span>parity <span class=\"token operator\">!&#061;<\/span> UART_CFG_PARITY_NONE <span class=\"token operator\">||<\/span><br \/>\n        cfg<span class=\"token operator\">-&gt;<\/span>stop_bits <span class=\"token operator\">!&#061;<\/span> UART_CFG_STOP_BITS_1<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span>ENOTSUP<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 2. \u8ba1\u7b97\u6ce2\u7279\u7387\u5206\u9891\u503c&#xff1a;\u8fd9\u91cc\u4ee5 16MHz \u5916\u8bbe\u65f6\u949f\u300116 \u500d\u8fc7\u91c7\u6837\u4e3a\u4f8b\u3002<br \/>\n     *    \u5b9e\u9645\u9879\u76ee\u4e2d\u5e94\u901a\u8fc7 Devicetree \u7684 clocks \u5c5e\u6027\u83b7\u53d6\u771f\u5b9e\u65f6\u949f\u9891\u7387\u3002 *\/<\/span><br \/>\n    <span class=\"token class-name\">uint32_t<\/span> clock_freq <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">16000000u<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/* \u793a\u4f8b&#xff1a;16 MHz *\/<\/span><br \/>\n    <span class=\"token class-name\">uint32_t<\/span> divisor <span class=\"token operator\">&#061;<\/span> clock_freq <span class=\"token operator\">\/<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token number\">16u<\/span> <span class=\"token operator\">*<\/span> cfg<span class=\"token operator\">-&gt;<\/span>baudrate<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 3. \u5199\u5165\u6ce2\u7279\u7387\u5206\u9891\u5bc4\u5b58\u5668&#xff08;DLL\/DLH&#xff0c;\u8fd9\u91cc\u7b80\u5316\u4e3a\u4e00\u4e2a 32 \u4f4d\u5bc4\u5b58\u5668&#xff09;\u3002<br \/>\n     *    \u5b9e\u9645 16550 \u517c\u5bb9 UART \u9700\u8981\u5148\u8bbe\u7f6e DLAB \u4f4d\u518d\u5199 DLL\/DLH\u3002 *\/<\/span><br \/>\n    <span class=\"token comment\">\/* sys_write32(divisor, (uintptr_t)&amp;base[MYUART_REG_DLL \/ 4]); *\/<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 4. \u8bb0\u5f55\u5f53\u524d\u6ce2\u7279\u7387\u5230\u8fd0\u884c\u65f6\u6570\u636e\u3002 *\/<\/span><br \/>\n    data<span class=\"token operator\">-&gt;<\/span>baudrate <span class=\"token operator\">&#061;<\/span> cfg<span class=\"token operator\">-&gt;<\/span>baudrate<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/* \u67e5\u8be2\u5f53\u524d UART \u914d\u7f6e&#xff1a;\u5e94\u7528\u8c03\u7528 uart_config_get() \u65f6\u8fdb\u5165\u6b64\u51fd\u6570\u3002<br \/>\n * \u5b83\u628a Driver \u5185\u90e8\u4fdd\u5b58\u7684\u8fd0\u884c\u65f6\u72b6\u6001\u56de\u586b\u7ed9\u8c03\u7528\u8005\u3002 *\/<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">myuart_cfg_get<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">device<\/span> <span class=\"token operator\">*<\/span>dev<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">uart_config<\/span> <span class=\"token operator\">*<\/span>cfg<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_data<\/span> <span class=\"token operator\">*<\/span>data <span class=\"token operator\">&#061;<\/span> dev<span class=\"token operator\">-&gt;<\/span>data<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* \u4ece\u8fd0\u884c\u65f6\u6570\u636e\u4e2d\u8bfb\u53d6\u5f53\u524d\u914d\u7f6e\u3002 *\/<\/span><br \/>\n    cfg<span class=\"token operator\">-&gt;<\/span>baudrate <span class=\"token operator\">&#061;<\/span> data<span class=\"token operator\">-&gt;<\/span>baudrate<span class=\"token punctuation\">;<\/span><br \/>\n    cfg<span class=\"token operator\">-&gt;<\/span>data_bits <span class=\"token operator\">&#061;<\/span> UART_CFG_DATA_BITS_8<span class=\"token punctuation\">;<\/span><br \/>\n    cfg<span class=\"token operator\">-&gt;<\/span>parity <span class=\"token operator\">&#061;<\/span> UART_CFG_PARITY_NONE<span class=\"token punctuation\">;<\/span><br \/>\n    cfg<span class=\"token operator\">-&gt;<\/span>stop_bits <span class=\"token operator\">&#061;<\/span> UART_CFG_STOP_BITS_1<span class=\"token punctuation\">;<\/span><br \/>\n    cfg<span class=\"token operator\">-&gt;<\/span>flow_ctrl <span class=\"token operator\">&#061;<\/span> UART_CFG_FLOW_CTRL_NONE<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/* uart_driver_api&#xff1a;Zephyr UART \u5b50\u7cfb\u7edf\u8981\u6c42 Driver \u5b9e\u73b0\u7684\u6807\u51c6\u63a5\u53e3\u3002<br \/>\n * \u8fd9\u91cc\u8865\u5168\u4e86 poll_out\u3001poll_in\u3001cfg_set\u3001cfg_get \u56db\u4e2a\u5fc5\u8981\u56de\u8c03&#xff0c;<br \/>\n * \u4f7f Driver \u53ef\u4ee5\u901a\u8fc7 Zephyr UART API \u88ab\u5e94\u7528\u6b63\u5e38\u8c03\u7528\u3002 *\/<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">uart_driver_api<\/span> myuart_driver_api <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>poll_out <span class=\"token operator\">&#061;<\/span> myuart_poll_out<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>poll_in  <span class=\"token operator\">&#061;<\/span> myuart_poll_in<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>cfg_set  <span class=\"token operator\">&#061;<\/span> myuart_cfg_set<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>cfg_get  <span class=\"token operator\">&#061;<\/span> myuart_cfg_get<span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/* \u5b9e\u4f8b\u751f\u6210\u5b8f&#xff1a;\u4e3a\u6bcf\u4e2a status &#061; &#034;okay&#034; \u7684\u8282\u70b9\u751f\u6210\u4e00\u4e2a\u8bbe\u5907\u5b9e\u4f8b\u3002<br \/>\n * \u53c2\u6570\u4f9d\u6b21\u662f&#xff1a;<br \/>\n *   inst        \u2014\u2014 \u5b9e\u4f8b\u7f16\u53f7&#xff08;0\u30011\u30012&#8230;&#xff09;&#xff0c;\u7531 DT_INST_FOREACH_STATUS_OKAY \u81ea\u52a8\u4f20\u5165<br \/>\n *   myuart_init \u2014\u2014 \u521d\u59cb\u5316\u51fd\u6570<br \/>\n *   NULL        \u2014\u2014 \u7535\u6e90\u7ba1\u7406\u56de\u8c03&#xff08;\u672c\u4f8b\u4e0d\u9700\u8981&#xff09;<br \/>\n *   &amp;data       \u2014\u2014 \u6307\u5411\u8fd0\u884c\u65f6\u6570\u636e<br \/>\n *   &amp;config     \u2014\u2014 \u6307\u5411\u7f16\u8bd1\u671f\u914d\u7f6e<br \/>\n *   POST_KERNEL \u2014\u2014 \u521d\u59cb\u5316\u4f18\u5148\u7ea7\u7ea7\u522b&#xff08;\u5185\u6838\u542f\u52a8\u540e\u521d\u59cb\u5316&#xff09;<br \/>\n *   CONFIG_SERIAL_INIT_PRIORITY \u2014\u2014 \u540c\u7ea7\u522b\u5185\u7684\u4f18\u5148\u7ea7<br \/>\n *   &amp;api        \u2014\u2014 \u6307\u5411 Driver API \u7ed3\u6784\u4f53 *\/<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">MYUART_DEFINE<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">)<\/span>                                            <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> myuart_config_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span>         <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token punctuation\">.<\/span>base <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">DT_INST_REG_ADDR<\/span><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>   <\/span><span class=\"token comment\">\/* \u4ece Devicetree \u53d6\u57fa\u5730\u5740 *\/<\/span>  <span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token punctuation\">.<\/span>irq  <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">DT_INST_IRQ<\/span><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>        <\/span><span class=\"token comment\">\/* \u4ece Devicetree \u53d6\u4e2d\u65ad\u53f7 *\/<\/span>  <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>                                                                  <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                                                                        <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_data<\/span> myuart_data_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst<span class=\"token punctuation\">;<\/span>                       <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                                                                        <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token function\">DEVICE_DT_INST_DEFINE<\/span><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">,<\/span>                                        <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\">myuart_init<span class=\"token punctuation\">,<\/span>                                 <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\"><span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span>                                        <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\"><span class=\"token operator\">&amp;<\/span>myuart_data_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst<span class=\"token punctuation\">,<\/span>                         <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\"><span class=\"token operator\">&amp;<\/span>myuart_config_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst<span class=\"token punctuation\">,<\/span>                       <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\">POST_KERNEL<span class=\"token punctuation\">,<\/span>                                 <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\">CONFIG_SERIAL_INIT_PRIORITY<span class=\"token punctuation\">,<\/span>                 <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\"><span class=\"token operator\">&amp;<\/span>myuart_driver_api<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/span><\/span><\/p>\n<p><span class=\"token comment\">\/* \u6838\u5fc3\u5b8f&#xff1a;\u904d\u5386 Devicetree \u4e2d\u6240\u6709 compatible &#061; &#034;mycompany,myuart&#034;<br \/>\n * \u4e14 status &#061; &#034;okay&#034; \u7684\u8282\u70b9&#xff0c;\u5bf9\u6bcf\u4e2a\u8282\u70b9\u8c03\u7528\u4e00\u6b21 MYUART_DEFINE(inst)\u3002<br \/>\n * \u4f8b\u5982 uart0 -&gt; inst&#061;0&#xff0c;uart1 -&gt; inst&#061;1&#xff0c;\u81ea\u52a8\u751f\u6210 myuart0\u3001myuart1 \u4e24\u4e2a\u8bbe\u5907\u3002 *\/<\/span><br \/>\n<span class=\"token function\">DT_INST_FOREACH_STATUS_OKAY<\/span><span class=\"token punctuation\">(<\/span>MYUART_DEFINE<span class=\"token punctuation\">)<\/span><\/p>\n<p>3.1 \u8865\u5168 DEVICE_DT_INST_DEFINE \u5b8f\u4e0e DT_INST_FOREACH_STATUS_OKAY \u8c03\u7528<\/p>\n<p>\u4e0a\u9762\u4ee3\u7801\u4e2d\u7684 DEVICE_DT_INST_DEFINE \u5b8f\u548c DT_INST_FOREACH_STATUS_OKAY \u8c03\u7528\u5728\u7f16\u8f91\u5668\u4e2d\u53ef\u80fd\u88ab\u622a\u65ad&#xff0c;\u8fd9\u91cc\u7ed9\u51fa\u5b8c\u6574\u3001\u53ef\u76f4\u63a5\u7f16\u8bd1\u7684\u5b9a\u4e49&#xff0c;\u5e76\u9010\u53c2\u6570\u8bf4\u660e\u4f5c\u7528\u3002<\/p>\n<p><span class=\"token comment\">\/* &#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061; DEVICE_DT_INST_DEFINE \u5b8f\u5b8c\u6574\u5b9a\u4e49 &#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;<br \/>\n * \u8fd9\u662f Zephyr \u8bbe\u5907\u6a21\u578b\u4e2d\u6700\u6838\u5fc3\u7684\u6ce8\u518c\u5b8f&#xff0c;\u5b83\u628a\u300c\u914d\u7f6e\u3001\u6570\u636e\u3001\u521d\u59cb\u5316\u51fd\u6570\u3001API\u300d<br \/>\n * \u6253\u5305\u6210\u4e00\u4e2a struct device \u5b9e\u4f8b&#xff0c;\u6ce8\u518c\u8fdb Zephyr \u8bbe\u5907\u6a21\u578b\u3002<br \/>\n *<br \/>\n * \u5b8c\u6574\u7b7e\u540d&#xff1a;<br \/>\n *   DEVICE_DT_INST_DEFINE(inst, init_fn, pm_action_fn, data_ptr,<br \/>\n *                         config_ptr, level, priority, api_ptr);<br \/>\n *<br \/>\n * \u53c2\u6570\u9010\u4e00\u8bf4\u660e&#xff1a;<br \/>\n *   inst        \u2014\u2014 \u5b9e\u4f8b\u7f16\u53f7&#xff08;0\u30011\u30012&#8230;&#xff09;&#xff0c;\u7531 DT_INST_FOREACH_STATUS_OKAY \u81ea\u52a8\u4f20\u5165\u3002<br \/>\n *                  \u5b83\u51b3\u5b9a\u4e86\u8fd9\u4e2a\u8bbe\u5907\u5b9e\u4f8b\u5bf9\u5e94 Devicetree \u4e2d\u7684\u54ea\u4e2a\u8282\u70b9\u3002<br \/>\n *   init_fn     \u2014\u2014 \u521d\u59cb\u5316\u51fd\u6570&#xff0c;\u8bbe\u5907\u542f\u52a8\u65f6\u88ab\u5185\u6838\u8c03\u7528\u4e00\u6b21&#xff0c;\u8fd4\u56de 0 \u8868\u793a\u6210\u529f\u3002<br \/>\n *   pm_action_fn\u2014\u2014 \u7535\u6e90\u7ba1\u7406\u56de\u8c03\u51fd\u6570&#xff0c;\u672c\u4f8b\u4e0d\u9700\u8981&#xff0c;\u4f20 NULL\u3002<br \/>\n *   data_ptr    \u2014\u2014 \u6307\u5411\u8fd0\u884c\u65f6\u6570\u636e&#xff08;struct myuart_data&#xff09;&#xff0c;\u4fdd\u5b58\u53ef\u53d8\u72b6\u6001\u3002<br \/>\n *   config_ptr  \u2014\u2014 \u6307\u5411\u7f16\u8bd1\u671f\u914d\u7f6e&#xff08;struct myuart_config&#xff09;&#xff0c;\u503c\u6765\u81ea Devicetree\u3002<br \/>\n *   level       \u2014\u2014 \u521d\u59cb\u5316\u4f18\u5148\u7ea7\u7ea7\u522b&#xff0c;POST_KERNEL \u8868\u793a\u5185\u6838\u542f\u52a8\u540e\u521d\u59cb\u5316\u3002<br \/>\n *   priority    \u2014\u2014 \u540c\u7ea7\u522b\u5185\u7684\u521d\u59cb\u5316\u987a\u5e8f&#xff0c;\u6570\u503c\u8d8a\u5c0f\u8d8a\u5148\u6267\u884c\u3002<br \/>\n *   api_ptr     \u2014\u2014 \u6307\u5411 Driver API \u7ed3\u6784\u4f53&#xff08;uart_driver_api&#xff09;&#xff0c;\u5e94\u7528\u901a\u8fc7\u5b83\u8c03\u7528\u786c\u4ef6\u3002<br \/>\n *\/<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">MYUART_DEFINE<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">)<\/span>                                            <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token comment\">\/* \u7b2c\u4e00\u6bb5&#xff1a;\u7f16\u8bd1\u671f config \u2014\u2014 \u6bcf\u4e2a\u5b9e\u4f8b\u4e00\u4efd&#xff0c;\u503c\u6765\u81ea Devicetree \u5b8f *\/<\/span>    <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> myuart_config_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span>         <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token punctuation\">.<\/span>base <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">DT_INST_REG_ADDR<\/span><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>   <\/span><span class=\"token comment\">\/* \u57fa\u5730\u5740&#xff1a;\u6765\u81ea reg \u5c5e\u6027 *\/<\/span>    <span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token punctuation\">.<\/span>irq  <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">DT_INST_IRQ<\/span><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>        <\/span><span class=\"token comment\">\/* \u4e2d\u65ad\u53f7&#xff1a;\u6765\u81ea interrupts *\/<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>                                                                  <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                                                                        <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token comment\">\/* \u7b2c\u4e8c\u6bb5&#xff1a;\u8fd0\u884c\u65f6 data \u2014\u2014 \u6bcf\u4e2a\u5b9e\u4f8b\u4e00\u4efd&#xff0c;\u4fdd\u5b58\u8fd0\u884c\u72b6\u6001 *\/<\/span>              <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_data<\/span> myuart_data_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst<span class=\"token punctuation\">;<\/span>                       <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                                                                        <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token comment\">\/* \u7b2c\u4e09\u6bb5&#xff1a;\u8c03\u7528 DEVICE_DT_INST_DEFINE \u6ce8\u518c\u8bbe\u5907\u5b9e\u4f8b *\/<\/span>               <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token function\">DEVICE_DT_INST_DEFINE<\/span><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">,<\/span>                                        <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\">myuart_init<span class=\"token punctuation\">,<\/span>        <\/span><span class=\"token comment\">\/* init_fn&#xff1a;\u521d\u59cb\u5316\u51fd\u6570 *\/<\/span>  <span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\"><span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span>               <\/span><span class=\"token comment\">\/* pm_action_fn&#xff1a;\u65e0\u7535\u6e90\u7ba1\u7406 *\/<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\"><span class=\"token operator\">&amp;<\/span>myuart_data_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst<span class=\"token punctuation\">,<\/span>   <\/span><span class=\"token comment\">\/* data_ptr&#xff1a;\u8fd0\u884c\u65f6\u6570\u636e *\/<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\"><span class=\"token operator\">&amp;<\/span>myuart_config_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst<span class=\"token punctuation\">,<\/span> <\/span><span class=\"token comment\">\/* config_ptr&#xff1a;\u7f16\u8bd1\u671f\u914d\u7f6e *\/<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\">POST_KERNEL<span class=\"token punctuation\">,<\/span>        <\/span><span class=\"token comment\">\/* level&#xff1a;\u5185\u6838\u542f\u52a8\u540e\u521d\u59cb\u5316 *\/<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\">CONFIG_SERIAL_INIT_PRIORITY<span class=\"token punctuation\">,<\/span> <\/span><span class=\"token comment\">\/* priority&#xff1a;\u540c\u7ea7\u522b\u5185\u987a\u5e8f *\/<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\"><span class=\"token operator\">&amp;<\/span>myuart_driver_api<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/span><span class=\"token comment\">\/* api_ptr&#xff1a;Driver API *\/<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/* &#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061; DT_INST_FOREACH_STATUS_OKAY \u8c03\u7528 &#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;<br \/>\n * \u8fd9\u662f Zephyr \u591a\u5b9e\u4f8b\u673a\u5236\u7684\u300c\u53d1\u52a8\u673a\u300d\u3002<br \/>\n *<br \/>\n * \u5c55\u5f00\u903b\u8f91\u5206\u4e09\u6b65&#xff1a;<br \/>\n *   \u7b2c\u4e00\u6b65&#xff1a;\u6536\u96c6\u8282\u70b9 \u2014\u2014 \u627e\u51fa Devicetree \u4e2d\u6240\u6709 compatible &#061; &#034;mycompany,myuart&#034;<br \/>\n *           \u4e14 status &#061; &#034;okay&#034; \u7684\u8282\u70b9&#xff1b;<br \/>\n *   \u7b2c\u4e8c\u6b65&#xff1a;\u6309\u987a\u5e8f\u7f16\u53f7 \u2014\u2014 uart0&#xff08;serial&#064;40000000&#xff09;\u2192 inst &#061; 0&#xff0c;<br \/>\n *           uart1&#xff08;serial&#064;40001000&#xff09;\u2192 inst &#061; 1&#xff1b;<br \/>\n *   \u7b2c\u4e09\u6b65&#xff1a;\u9010\u4e2a\u5c55\u5f00\u5b8f \u2014\u2014 \u5bf9\u6bcf\u4e2a\u8282\u70b9\u8c03\u7528\u4e00\u6b21 MYUART_DEFINE(inst)\u3002<br \/>\n *<br \/>\n * \u5c55\u5f00\u540e\u7684\u7b49\u4ef7\u6548\u679c&#xff1a;<br \/>\n *   MYUART_DEFINE(0)  \u2192 \u751f\u6210 myuart_config_0\u3001myuart_data_0\u3001\u8bbe\u5907\u5b9e\u4f8b myuart0<br \/>\n *   MYUART_DEFINE(1)  \u2192 \u751f\u6210 myuart_config_1\u3001myuart_data_1\u3001\u8bbe\u5907\u5b9e\u4f8b myuart1<br \/>\n *<br \/>\n * \u4e5f\u5c31\u662f\u8bf4&#xff1a;uart0 \u8282\u70b9\u81ea\u52a8\u751f\u6210 myuart0 \u8bbe\u5907&#xff0c;uart1 \u8282\u70b9\u81ea\u52a8\u751f\u6210 myuart1 \u8bbe\u5907&#xff0c;<br \/>\n * \u4e00\u4e2a Driver \u6e90\u7801\u65e0\u9700\u590d\u5236&#xff0c;\u5c31\u80fd\u670d\u52a1\u591a\u4e2a\u786c\u4ef6\u5b9e\u4f8b\u3002<br \/>\n *\/<\/span><br \/>\n<span class=\"token function\">DT_INST_FOREACH_STATUS_OKAY<\/span><span class=\"token punctuation\">(<\/span>MYUART_DEFINE<span class=\"token punctuation\">)<\/span><\/p>\n<p>3.2 uart0\/uart1 \u5982\u4f55\u81ea\u52a8\u751f\u6210 myuart0 \u548c myuart1<\/p>\n<p>DT_INST_FOREACH_STATUS_OKAY(MYUART_DEFINE) \u5728\u7f16\u8bd1\u671f\u5b8c\u6210\u5c55\u5f00&#xff0c;\u7b49\u4ef7\u4e8e\u624b\u5199\u4e0b\u9762\u4e24\u4efd\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token comment\">\/* \u2014\u2014 DT_INST_FOREACH_STATUS_OKAY(MYUART_DEFINE) \u5c55\u5f00\u540e\u7684\u7b49\u4ef7\u4ee3\u7801 \u2014\u2014 *\/<\/span><\/p>\n<p><span class=\"token comment\">\/* inst &#061; 0&#xff1a;\u5bf9\u5e94 uart0&#xff08;serial&#064;40000000&#xff09; *\/<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> myuart_config_0 <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>base <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0x40000000<\/span><span class=\"token punctuation\">,<\/span>   <span class=\"token comment\">\/* DT_INST_REG_ADDR(0) \u5c55\u5f00\u7ed3\u679c *\/<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>irq  <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">32<\/span><span class=\"token punctuation\">,<\/span>           <span class=\"token comment\">\/* DT_INST_IRQ(0) \u5c55\u5f00\u7ed3\u679c *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_data<\/span> myuart_data_0<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">DEVICE_DT_INST_DEFINE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> myuart_init<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                      <span class=\"token operator\">&amp;<\/span>myuart_data_0<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>myuart_config_0<span class=\"token punctuation\">,<\/span><br \/>\n                      POST_KERNEL<span class=\"token punctuation\">,<\/span> CONFIG_SERIAL_INIT_PRIORITY<span class=\"token punctuation\">,<\/span><br \/>\n                      <span class=\"token operator\">&amp;<\/span>myuart_driver_api<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/* \u6ce8\u518c\u7ed3\u679c&#xff1a;\u8bbe\u5907\u540d myuart0&#xff0c;\u5e94\u7528\u53ef\u901a\u8fc7 DEVICE_DT_GET(DT_NODELABEL(uart0)) \u83b7\u53d6 *\/<\/span><\/p>\n<p><span class=\"token comment\">\/* inst &#061; 1&#xff1a;\u5bf9\u5e94 uart1&#xff08;serial&#064;40001000&#xff09; *\/<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> myuart_config_1 <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>base <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0x40001000<\/span><span class=\"token punctuation\">,<\/span>   <span class=\"token comment\">\/* DT_INST_REG_ADDR(1) \u5c55\u5f00\u7ed3\u679c *\/<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>irq  <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">33<\/span><span class=\"token punctuation\">,<\/span>           <span class=\"token comment\">\/* DT_INST_IRQ(1) \u5c55\u5f00\u7ed3\u679c *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_data<\/span> myuart_data_1<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">DEVICE_DT_INST_DEFINE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> myuart_init<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                      <span class=\"token operator\">&amp;<\/span>myuart_data_1<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>myuart_config_1<span class=\"token punctuation\">,<\/span><br \/>\n                      POST_KERNEL<span class=\"token punctuation\">,<\/span> CONFIG_SERIAL_INIT_PRIORITY<span class=\"token punctuation\">,<\/span><br \/>\n                      <span class=\"token operator\">&amp;<\/span>myuart_driver_api<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/* \u6ce8\u518c\u7ed3\u679c&#xff1a;\u8bbe\u5907\u540d myuart1&#xff0c;\u5e94\u7528\u53ef\u901a\u8fc7 DEVICE_DT_GET(DT_NODELABEL(uart1)) \u83b7\u53d6 *\/<\/span><\/p>\n<p>\u5173\u952e\u70b9&#xff1a;DT_INST_FOREACH_STATUS_OKAY \u5728\u7f16\u8bd1\u671f\u5b8c\u6210\u5c55\u5f00&#xff0c;DT_INST_REG_ADDR(0) \u4f1a\u88ab\u66ff\u6362\u6210\u5b57\u9762\u91cf 0x40000000&#xff0c;DT_INST_IRQ(0) \u66ff\u6362\u6210 32\u3002\u6240\u4ee5\u6700\u7ec8\u751f\u6210\u7684 config \u7ed3\u6784\u4f53\u662f\u7f16\u8bd1\u671f\u5e38\u91cf&#xff0c;\u4e0d\u5360\u7528\u8fd0\u884c\u65f6\u89e3\u6790\u5f00\u9500\u2014\u2014\u8fd9\u6b63\u662f Zephyr\u300cDevicetree \u4e0d\u662f\u8fd0\u884c\u65f6\u6570\u636e\u5e93\u300d\u8fd9\u4e00\u8bbe\u8ba1\u7406\u5ff5\u7684\u843d\u5730\u4f53\u73b0\u3002\u800c myuart0\u3001myuart1 \u8fd9\u4e24\u4e2a\u8bbe\u5907\u540d&#xff0c;\u6b63\u662f\u7531 DEVICE_DT_INST_DEFINE \u5185\u90e8\u6839\u636e inst \u7f16\u53f7\u81ea\u52a8\u62fc\u63a5\u751f\u6210\u7684\u3002<\/p>\n<p>3.1 \u8865\u5168 MYUART_DEFINE \u5b8f\u7684\u5b8c\u6574\u5b9a\u4e49<\/p>\n<p>\u4e0a\u9762\u4ee3\u7801\u4e2d\u7684 MYUART_DEFINE \u5b8f\u5728\u7f16\u8f91\u5668\u4e2d\u53ef\u80fd\u88ab\u622a\u65ad&#xff0c;\u8fd9\u91cc\u7ed9\u51fa\u5b8c\u6574\u3001\u53ef\u76f4\u63a5\u7f16\u8bd1\u7684\u5b9a\u4e49\u3002\u5b83\u7531\u4e09\u90e8\u5206\u7ec4\u6210&#xff1a;config \u7ed3\u6784\u4f53\u3001data \u7ed3\u6784\u4f53\u3001DEVICE_DT_INST_DEFINE \u6ce8\u518c\u8c03\u7528\u3002<\/p>\n<p><span class=\"token comment\">\/* &#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061; MYUART_DEFINE \u5b8f\u5b8c\u6574\u5b9a\u4e49 &#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;<br \/>\n * \u8fd9\u4e2a\u5b8f\u4f1a\u88ab DT_INST_FOREACH_STATUS_OKAY \u5bf9\u6bcf\u4e2a status&#061;&#034;okay&#034; \u7684\u8282\u70b9\u8c03\u7528\u4e00\u6b21&#xff0c;<br \/>\n * \u53c2\u6570 inst \u662f\u5b9e\u4f8b\u7f16\u53f7&#xff08;0\u30011\u30012&#8230;&#xff09;&#xff0c;\u7531\u5b8f\u81ea\u52a8\u4f20\u5165\u3002<br \/>\n *<br \/>\n * \u5b8f\u4f53\u5206\u4e09\u6bb5&#xff1a;<br \/>\n *   1) \u5b9a\u4e49\u8be5\u5b9e\u4f8b\u7684\u7f16\u8bd1\u671f config \u7ed3\u6784\u4f53&#xff08;\u4ece Devicetree \u53d6\u786c\u4ef6\u914d\u7f6e&#xff09;&#xff1b;<br \/>\n *   2) \u5b9a\u4e49\u8be5\u5b9e\u4f8b\u7684\u8fd0\u884c\u65f6 data \u7ed3\u6784\u4f53&#xff1b;<br \/>\n *   3) \u8c03\u7528 DEVICE_DT_INST_DEFINE \u628a config\/data\/init\/api \u6253\u5305\u6ce8\u518c\u6210 Zephyr \u8bbe\u5907\u3002<br \/>\n *\/<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">MYUART_DEFINE<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">)<\/span>                                            <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token comment\">\/* \u7b2c\u4e00\u6bb5&#xff1a;\u7f16\u8bd1\u671f config \u2014\u2014 \u6bcf\u4e2a\u5b9e\u4f8b\u4e00\u4efd&#xff0c;\u503c\u6765\u81ea Devicetree \u5b8f *\/<\/span>    <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> myuart_config_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span>         <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token punctuation\">.<\/span>base <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">DT_INST_REG_ADDR<\/span><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>   <\/span><span class=\"token comment\">\/* \u57fa\u5730\u5740&#xff1a;\u6765\u81ea reg \u5c5e\u6027 *\/<\/span>    <span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token punctuation\">.<\/span>irq  <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">DT_INST_IRQ<\/span><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>        <\/span><span class=\"token comment\">\/* \u4e2d\u65ad\u53f7&#xff1a;\u6765\u81ea interrupts *\/<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>                                                                  <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                                                                        <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token comment\">\/* \u7b2c\u4e8c\u6bb5&#xff1a;\u8fd0\u884c\u65f6 data \u2014\u2014 \u6bcf\u4e2a\u5b9e\u4f8b\u4e00\u4efd&#xff0c;\u4fdd\u5b58\u8fd0\u884c\u72b6\u6001 *\/<\/span>              <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_data<\/span> myuart_data_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst<span class=\"token punctuation\">;<\/span>                       <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                                                                        <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token comment\">\/* \u7b2c\u4e09\u6bb5&#xff1a;\u6ce8\u518c\u8bbe\u5907\u5b9e\u4f8b *\/<\/span>                                          <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token function\">DEVICE_DT_INST_DEFINE<\/span><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">,<\/span>                                        <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\">myuart_init<span class=\"token punctuation\">,<\/span>                                 <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\"><span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span>                                        <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\"><span class=\"token operator\">&amp;<\/span>myuart_data_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst<span class=\"token punctuation\">,<\/span>                         <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\"><span class=\"token operator\">&amp;<\/span>myuart_config_<\/span><span class=\"token punctuation\">##<\/span><span class=\"token expression\">inst<span class=\"token punctuation\">,<\/span>                       <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\">POST_KERNEL<span class=\"token punctuation\">,<\/span>                                 <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\">CONFIG_SERIAL_INIT_PRIORITY<span class=\"token punctuation\">,<\/span>                 <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n                          <span class=\"token expression\"><span class=\"token operator\">&amp;<\/span>myuart_driver_api<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/span><\/span><\/p>\n<p>3.2 DEVICE_DT_INST_DEFINE \u5b8c\u6574\u53c2\u6570\u8bf4\u660e<\/p>\n<p>DEVICE_DT_INST_DEFINE \u662f Zephyr \u8bbe\u5907\u6a21\u578b\u4e2d\u6700\u6838\u5fc3\u7684\u6ce8\u518c\u5b8f&#xff0c;\u5b83\u628a\u300c\u914d\u7f6e\u3001\u6570\u636e\u3001\u521d\u59cb\u5316\u51fd\u6570\u3001API\u300d\u6253\u5305\u6210\u4e00\u4e2a struct device \u5b9e\u4f8b\u3002\u5b8c\u6574\u7b7e\u540d\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token function\">DEVICE_DT_INST_DEFINE<\/span><span class=\"token punctuation\">(<\/span>inst<span class=\"token punctuation\">,<\/span> init_fn<span class=\"token punctuation\">,<\/span> pm_action_fn<span class=\"token punctuation\">,<\/span> data_ptr<span class=\"token punctuation\">,<\/span><br \/>\n                      config_ptr<span class=\"token punctuation\">,<\/span> level<span class=\"token punctuation\">,<\/span> priority<span class=\"token punctuation\">,<\/span> api_ptr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<table>\n<tr>\u53c2\u6570\u542b\u4e49\u672c\u4f8b\u4f20\u503c<\/tr>\n<tbody>\n<tr>\n<td>inst<\/td>\n<td>\u5b9e\u4f8b\u7f16\u53f7&#xff0c;\u7531 DT_INST_FOREACH_STATUS_OKAY \u81ea\u52a8\u4f20\u5165&#xff08;0\u30011\u30012\u2026&#xff09;<\/td>\n<td>inst<\/td>\n<\/tr>\n<tr>\n<td>init_fn<\/td>\n<td>\u521d\u59cb\u5316\u51fd\u6570&#xff0c;\u8bbe\u5907\u542f\u52a8\u65f6\u88ab\u5185\u6838\u8c03\u7528\u4e00\u6b21&#xff0c;\u8fd4\u56de 0 \u8868\u793a\u6210\u529f<\/td>\n<td>myuart_init<\/td>\n<\/tr>\n<tr>\n<td>pm_action_fn<\/td>\n<td>\u7535\u6e90\u7ba1\u7406\u56de\u8c03\u51fd\u6570&#xff0c;\u4e0d\u9700\u8981\u65f6\u4f20 NULL<\/td>\n<td>NULL<\/td>\n<\/tr>\n<tr>\n<td>data_ptr<\/td>\n<td>\u6307\u5411\u8fd0\u884c\u65f6\u6570\u636e&#xff08;struct myuart_data&#xff09;&#xff0c;\u4fdd\u5b58\u53ef\u53d8\u72b6\u6001<\/td>\n<td>&amp;myuart_data_##inst<\/td>\n<\/tr>\n<tr>\n<td>config_ptr<\/td>\n<td>\u6307\u5411\u7f16\u8bd1\u671f\u914d\u7f6e&#xff08;struct myuart_config&#xff09;&#xff0c;\u503c\u6765\u81ea Devicetree<\/td>\n<td>&amp;myuart_config_##inst<\/td>\n<\/tr>\n<tr>\n<td>level<\/td>\n<td>\u521d\u59cb\u5316\u4f18\u5148\u7ea7\u7ea7\u522b&#xff0c;POST_KERNEL \u8868\u793a\u5185\u6838\u542f\u52a8\u540e\u521d\u59cb\u5316<\/td>\n<td>POST_KERNEL<\/td>\n<\/tr>\n<tr>\n<td>priority<\/td>\n<td>\u540c\u7ea7\u522b\u5185\u7684\u521d\u59cb\u5316\u987a\u5e8f&#xff0c;\u6570\u503c\u8d8a\u5c0f\u8d8a\u5148\u6267\u884c<\/td>\n<td>CONFIG_SERIAL_INIT_PRIORITY<\/td>\n<\/tr>\n<tr>\n<td>api_ptr<\/td>\n<td>\u6307\u5411 Driver API \u7ed3\u6784\u4f53&#xff08;\u5982 uart_driver_api&#xff09;&#xff0c;\u5e94\u7528\u901a\u8fc7\u5b83\u8c03\u7528\u786c\u4ef6<\/td>\n<td>&amp;myuart_driver_api<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>3.3 DT_INST_FOREACH_STATUS_OKAY \u7684\u5c55\u5f00\u903b\u8f91<\/p>\n<p>DT_INST_FOREACH_STATUS_OKAY(MYUART_DEFINE) \u662f Zephyr \u591a\u5b9e\u4f8b\u673a\u5236\u7684\u300c\u53d1\u52a8\u673a\u300d\u3002\u5b83\u7684\u5c55\u5f00\u903b\u8f91\u53ef\u4ee5\u62c6\u6210\u4e09\u6b65\u7406\u89e3&#xff1a;<\/p>\n<p>\u7b2c\u4e00\u6b65&#xff1a;\u6536\u96c6\u8282\u70b9<br \/>\n    Devicetree \u4e2d\u6240\u6709 compatible <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span><br \/>\n    \u4e14 status <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;okay&#034;<\/span> \u7684\u8282\u70b9<br \/>\n    \u2193<br \/>\n\u7b2c\u4e8c\u6b65&#xff1a;\u6309\u987a\u5e8f\u7f16\u53f7<br \/>\n    uart0&#xff08;serial&#064;40000000&#xff09;\u2192 inst <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><br \/>\n    uart1&#xff08;serial&#064;40001000&#xff09;\u2192 inst <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><br \/>\n    \u2193<br \/>\n\u7b2c\u4e09\u6b65&#xff1a;\u9010\u4e2a\u5c55\u5f00\u5b8f<br \/>\n    MYUART_DEFINE<span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span>  \u2192 \u751f\u6210 myuart_config_0\u3001myuart_data_0\u3001\u8bbe\u5907\u5b9e\u4f8b <span class=\"token number\">0<\/span><br \/>\n    MYUART_DEFINE<span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span>  \u2192 \u751f\u6210 myuart_config_1\u3001myuart_data_1\u3001\u8bbe\u5907\u5b9e\u4f8b <span class=\"token number\">1<\/span><\/p>\n<p>\u5c55\u5f00\u540e\u7684\u7b49\u4ef7\u4ee3\u7801&#xff08;\u5047\u8bbe\u6709 uart0\u3001uart1 \u4e24\u4e2a\u8282\u70b9&#xff09;&#xff1a;<\/p>\n<p><span class=\"token comment\">\/* \u2014\u2014 DT_INST_FOREACH_STATUS_OKAY(MYUART_DEFINE) \u5c55\u5f00\u540e\u7684\u7b49\u4ef7\u4ee3\u7801 \u2014\u2014 *\/<\/span><\/p>\n<p><span class=\"token comment\">\/* inst &#061; 0&#xff1a;\u5bf9\u5e94 uart0&#xff08;serial&#064;40000000&#xff09; *\/<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> myuart_config_0 <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>base <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0x40000000<\/span><span class=\"token punctuation\">,<\/span>   <span class=\"token comment\">\/* DT_INST_REG_ADDR(0) \u5c55\u5f00\u7ed3\u679c *\/<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>irq  <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">32<\/span><span class=\"token punctuation\">,<\/span>           <span class=\"token comment\">\/* DT_INST_IRQ(0) \u5c55\u5f00\u7ed3\u679c *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_data<\/span> myuart_data_0<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">DEVICE_DT_INST_DEFINE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> myuart_init<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                      <span class=\"token operator\">&amp;<\/span>myuart_data_0<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>myuart_config_0<span class=\"token punctuation\">,<\/span><br \/>\n                      POST_KERNEL<span class=\"token punctuation\">,<\/span> CONFIG_SERIAL_INIT_PRIORITY<span class=\"token punctuation\">,<\/span><br \/>\n                      <span class=\"token operator\">&amp;<\/span>myuart_driver_api<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/* inst &#061; 1&#xff1a;\u5bf9\u5e94 uart1&#xff08;serial&#064;40001000&#xff09; *\/<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_config<\/span> myuart_config_1 <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>base <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0x40001000<\/span><span class=\"token punctuation\">,<\/span>   <span class=\"token comment\">\/* DT_INST_REG_ADDR(1) \u5c55\u5f00\u7ed3\u679c *\/<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>irq  <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">33<\/span><span class=\"token punctuation\">,<\/span>           <span class=\"token comment\">\/* DT_INST_IRQ(1) \u5c55\u5f00\u7ed3\u679c *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">myuart_data<\/span> myuart_data_1<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">DEVICE_DT_INST_DEFINE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> myuart_init<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                      <span class=\"token operator\">&amp;<\/span>myuart_data_1<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>myuart_config_1<span class=\"token punctuation\">,<\/span><br \/>\n                      POST_KERNEL<span class=\"token punctuation\">,<\/span> CONFIG_SERIAL_INIT_PRIORITY<span class=\"token punctuation\">,<\/span><br \/>\n                      <span class=\"token operator\">&amp;<\/span>myuart_driver_api<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5173\u952e\u70b9&#xff1a;DT_INST_FOREACH_STATUS_OKAY \u5728\u7f16\u8bd1\u671f\u5b8c\u6210\u5c55\u5f00&#xff0c;DT_INST_REG_ADDR(0) \u4f1a\u88ab\u66ff\u6362\u6210\u5b57\u9762\u91cf 0x40000000&#xff0c;DT_INST_IRQ(0) \u66ff\u6362\u6210 32\u3002\u6240\u4ee5\u6700\u7ec8\u751f\u6210\u7684 config \u7ed3\u6784\u4f53\u662f\u7f16\u8bd1\u671f\u5e38\u91cf&#xff0c;\u4e0d\u5360\u7528\u8fd0\u884c\u65f6\u89e3\u6790\u5f00\u9500\u2014\u2014\u8fd9\u6b63\u662f Zephyr\u300cDevicetree \u4e0d\u662f\u8fd0\u884c\u65f6\u6570\u636e\u5e93\u300d\u8fd9\u4e00\u8bbe\u8ba1\u7406\u5ff5\u7684\u843d\u5730\u4f53\u73b0\u3002<\/p>\n<p>4. \u8fd9\u6761\u94fe\u8def\u5982\u4f55\u4e32\u8d77\u6765&#xff1f;<\/p>\n<p>\u628a\u4e0a\u9762\u4e09\u90e8\u5206\u5bf9\u7167\u7740\u770b&#xff0c;\u4f60\u4f1a\u53d1\u73b0\u6574\u6761\u94fe\u8def\u662f\u7f16\u8bd1\u671f\u5b8c\u6210\u7684&#xff1a;<\/p>\n<p>Binding YAML&#xff08;\u5b9a\u4e49\u5c5e\u6027 schema&#xff09;<br \/>\n        \u2502<br \/>\n        \u2502  compatible <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;mycompany,myuart&#034;<\/span> \u5339\u914d<br \/>\n        \u25bc<br \/>\nDevicetree \u8282\u70b9&#xff08;\u63cf\u8ff0\u786c\u4ef6\u5b9e\u4f8b uart0\/uart1&#xff09;<br \/>\n        \u2502<br \/>\n        \u2502  Devicetree Compiler \u89e3\u6790<br \/>\n        \u25bc<br \/>\n\u751f\u6210\u7684\u5934\u6587\u4ef6&#xff08;generated devicetree information&#xff09;<br \/>\n        \u2502<br \/>\n        \u2502  DT_INST_REG_ADDR<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> \/ DT_INST_IRQ<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> \u7b49\u5b8f<br \/>\n        \u25bc<br \/>\nDriver \u6e90\u7801&#xff08;\u8bfb\u53d6\u7f16\u8bd1\u671f\u5e38\u91cf&#xff0c;\u64cd\u4f5c\u786c\u4ef6\u5bc4\u5b58\u5668&#xff09;<br \/>\n        \u2502<br \/>\n        \u2502  DEVICE_DT_INST_DEFINE<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> \u6ce8\u518c\u8bbe\u5907<br \/>\n        \u25bc<br \/>\nZephyr \u8bbe\u5907\u6a21\u578b&#xff08;\u5e94\u7528\u901a\u8fc7 UART API \u8bbf\u95ee&#xff09;<\/p>\n<p>5. \u5173\u952e\u70b9\u56de\u987e<\/p>\n<ul>\n<li>Binding YAML \u5b9a\u4e49&#034;\u8282\u70b9\u5141\u8bb8\u6709\u54ea\u4e9b\u5c5e\u6027&#034;&#xff0c;\u662f schema&#xff1b;<\/li>\n<li>Devicetree \u8282\u70b9\u63cf\u8ff0&#034;\u5177\u4f53\u786c\u4ef6\u5b9e\u4f8b\u7684\u503c&#034;&#xff0c;\u662f data&#xff1b;<\/li>\n<li>Driver \u901a\u8fc7 DT_INST_* \u5b8f\u5728\u7f16\u8bd1\u671f\u8bfb\u53d6\u8fd9\u4e9b\u503c&#xff0c;\u751f\u6210 config \u7ed3\u6784\u4f53&#xff1b;<\/li>\n<li>DEVICE_DT_INST_DEFINE() \u628a config\u3001data\u3001init\u3001api \u6253\u5305\u6ce8\u518c\u6210 Zephyr \u8bbe\u5907&#xff1b;<\/li>\n<li>DT_INST_FOREACH_STATUS_OKAY() \u8ba9\u4e00\u4e2a Driver \u81ea\u52a8\u670d\u52a1\u591a\u4e2a\u786c\u4ef6\u5b9e\u4f8b&#xff0c;\u65e0\u9700\u590d\u5236\u4ee3\u7801\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u5c31\u662f Zephyr SoC BSP \u4e2d&#034;\u63cf\u8ff0\u786c\u4ef6&#034;\u4e0e&#034;\u64cd\u4f5c\u786c\u4ef6&#034;\u5206\u79bb\u7684\u6838\u5fc3\u8bbe\u8ba1\u3002\u4e0b\u4e00\u7bc7 08&#xff0c;\u6211\u4eec\u5c31\u57fa\u4e8e\u8fd9\u5957\u4ee3\u7801&#xff0c;\u628a\u5b83\u771f\u6b63\u7f16\u8bd1\u8fd0\u884c\u8d77\u6765&#xff0c;\u8f93\u51fa hello world\u3002<br \/>\n6. Kconfig&#xff1a;\u8ba9 Driver \u53ef\u4ee5\u88ab\u914d\u7f6e\u548c\u7f16\u8bd1<\/p>\n<p>\u6587\u4ef6\u8def\u5f84&#xff1a;drivers\/serial\/Kconfig.mycompany<\/p>\n<p># Kconfig \u7684\u4f5c\u7528&#xff1a;\u5b9a\u4e49\u672c Driver \u7684\u7f16\u8bd1\u5f00\u5173\u548c\u4f9d\u8d56\u5173\u7cfb\u3002<br \/>\n# \u53ea\u6709\u5bf9\u5e94\u7684 CONFIG_* \u88ab\u6253\u5f00\u65f6&#xff0c;\u8fd9\u4e2a Driver \u624d\u4f1a\u88ab\u7f16\u8bd1\u8fdb Zephyr\u3002<\/p>\n<p># \u5b9a\u4e49\u4e00\u4e2a\u540d\u4e3a MYCOMPANY_UART \u7684\u914d\u7f6e\u9879\u3002<br \/>\n# \u5b83\u7ee7\u627f\u81ea Zephyr \u4e32\u884c\u5b50\u7cfb\u7edf\u63d0\u4f9b\u7684\u516c\u5171\u914d\u7f6e\u9879 SERIAL\u3002<br \/>\n# &#034;select SERIAL&#034; \u8868\u793a&#xff1a;\u53ea\u8981\u6253\u5f00 MYCOMPANY_UART&#xff0c;\u5c31\u81ea\u52a8\u6253\u5f00 SERIAL\u3002<br \/>\nconfig MYCOMPANY_UART<br \/>\nbool &#034;MyCompany UART driver&#034;<br \/>\ndepends on DT_HAS_MYCOMPANY_MYUART_ENABLED<br \/>\nselect SERIAL<br \/>\nhelp<br \/>\n  This option enables the MyCompany UART driver.<br \/>\n  The driver is instantiated for each devicetree node<br \/>\n  with compatible &#034;mycompany,myuart&#034;.<\/p>\n<p>7. CMakeLists.txt&#xff1a;\u628a Driver \u6e90\u7801\u52a0\u5165\u6784\u5efa<\/p>\n<p>\u6587\u4ef6\u8def\u5f84&#xff1a;drivers\/serial\/CMakeLists.txt<\/p>\n<p># CMakeLists.txt \u7684\u4f5c\u7528&#xff1a;\u544a\u8bc9 Zephyr \u6784\u5efa\u7cfb\u7edf\u5728\u4ec0\u4e48\u6761\u4ef6\u4e0b\u7f16\u8bd1\u8fd9\u4e2a Driver \u6e90\u6587\u4ef6\u3002<br \/>\n# \u5b83\u901a\u8fc7 zephyr_library_sources_ifdef \u628a\u6e90\u6587\u4ef6\u4e0e Kconfig \u914d\u7f6e\u9879\u7ed1\u5b9a\u3002<\/p>\n<p># \u5f53 CONFIG_MYCOMPANY_UART \u88ab\u6253\u5f00\u65f6&#xff0c;\u7f16\u8bd1 uart_mycompany.c\u3002<br \/>\n# \u6ce8\u610f&#xff1a;\u6587\u4ef6\u540d\u5fc5\u987b\u4e0e Driver \u6e90\u6587\u4ef6\u4e00\u81f4&#xff0c;\u4e14\u653e\u5728 drivers\/serial\/ \u76ee\u5f55\u4e0b\u3002<br \/>\nzephyr_library_sources_ifdef(CONFIG_MYCOMPANY_UART uart_mycompany.c)<\/p>\n<p>8. \u6bcf\u4e2a\u914d\u7f6e\u9879\u7684\u4f5c\u7528\u8bf4\u660e<\/p>\n<table>\n<tr>\u914d\u7f6e\u9879 \/ \u8bed\u53e5\u4f5c\u7528<\/tr>\n<tbody>\n<tr>\n<td>config MYCOMPANY_UART<\/td>\n<td>\u5b9a\u4e49\u4e00\u4e2a\u5e03\u5c14\u914d\u7f6e\u9879&#xff0c;\u4f5c\u4e3a\u672c Driver \u7684\u603b\u5f00\u5173\u3002<\/td>\n<\/tr>\n<tr>\n<td>bool<\/td>\n<td>\u8868\u793a\u8be5\u914d\u7f6e\u9879\u53ea\u6709 y&#xff08;\u6253\u5f00&#xff09;\u6216\u7a7a&#xff08;\u5173\u95ed&#xff09;\u4e24\u79cd\u72b6\u6001\u3002<\/td>\n<\/tr>\n<tr>\n<td>depends on DT_HAS_MYCOMPANY_MYUART_ENABLED<\/td>\n<td>\u53ea\u6709\u5f53 Devicetree \u4e2d\u5b58\u5728 compatible &#061; &#034;mycompany,myuart&#034; \u4e14 status &#061; &#034;okay&#034; \u7684\u8282\u70b9\u65f6&#xff0c;\u8be5\u914d\u7f6e\u9879\u624d\u53ef\u89c1\u3002\u8fd9\u662f Zephyr \u4e2d Driver \u4e0e Devicetree \u8054\u52a8\u7684\u91cd\u8981\u673a\u5236\u3002<\/td>\n<\/tr>\n<tr>\n<td>select SERIAL<\/td>\n<td>\u81ea\u52a8\u6253\u5f00\u4e32\u884c\u5b50\u7cfb\u7edf\u7684\u57fa\u7840\u914d\u7f6e&#xff0c;\u786e\u4fdd UART API \u6846\u67b6\u88ab\u7f16\u8bd1\u3002<\/td>\n<\/tr>\n<tr>\n<td>help<\/td>\n<td>\u914d\u7f6e\u9879\u7684\u8bf4\u660e\u6587\u5b57&#xff0c;\u4f1a\u5728 menuconfig \u4e2d\u663e\u793a\u3002<\/td>\n<\/tr>\n<tr>\n<td>zephyr_library_sources_ifdef(CONFIG_MYCOMPANY_UART uart_mycompany.c)<\/td>\n<td>\u5f53 CONFIG_MYCOMPANY_UART&#061;y \u65f6&#xff0c;\u628a uart_mycompany.c \u52a0\u5165\u7f16\u8bd1\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>9. \u5982\u4f55\u8ba9\u8bfb\u8005\u76f4\u63a5\u7f16\u8bd1\u8fd0\u884c<\/p>\n<p>\u628a\u4e0a\u9762\u6240\u6709\u6587\u4ef6\u653e\u5230\u6b63\u786e\u4f4d\u7f6e\u540e&#xff0c;\u5728\u5e94\u7528\u5de5\u7a0b\u7684 prj.conf \u4e2d\u6253\u5f00\u914d\u7f6e&#xff1a;<\/p>\n<p><span class=\"token comment\"># prj.conf&#xff1a;\u5e94\u7528\u5de5\u7a0b\u7684\u914d\u7f6e\u6587\u4ef6<\/span><br \/>\n<span class=\"token comment\"># \u6253\u5f00 UART Driver \u7684\u7f16\u8bd1\u5f00\u5173<\/span><br \/>\n<span class=\"token assign-left variable\">CONFIG_MYCOMPANY_UART<\/span><span class=\"token operator\">&#061;<\/span>y<\/p>\n<p>\u7136\u540e\u5728\u5e94\u7528\u76ee\u5f55\u4e0b\u6267\u884c&#xff1a;<\/p>\n<p>west build <span class=\"token parameter variable\">-b<\/span> mycompany_x1_board <span class=\"token builtin class-name\">.<\/span><\/p>\n<p>Zephyr \u6784\u5efa\u7cfb\u7edf\u4f1a\u81ea\u52a8\u5b8c\u6210\u4ee5\u4e0b\u52a8\u4f5c&#xff1a;<\/p>\n<p>Kconfig&#xff08;CONFIG_MYCOMPANY_UART<span class=\"token operator\">&#061;<\/span>y&#xff09;<br \/>\n        \u2502<br \/>\n        \u2502  zephyr_library_sources_ifdef \u5224\u65ad<br \/>\n        \u25bc<br \/>\nCMakeLists.txt&#xff08;\u7f16\u8bd1 uart_mycompany.c&#xff09;<br \/>\n        \u2502<br \/>\n        \u2502  DT_HAS_MYCOMPANY_MYUART_ENABLED \u6821\u9a8c<br \/>\n        \u25bc<br \/>\nDevicetree \u8282\u70b9&#xff08;uart0\/uart1&#xff09;<br \/>\n        \u2502<br \/>\n        \u2502  DEVICE_DT_INST_DEFINE<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> \u6ce8\u518c<br \/>\n        \u25bc<br \/>\nZephyr \u8bbe\u5907\u6a21\u578b&#xff08;\u5e94\u7528\u53ef\u901a\u8fc7 UART API \u8bbf\u95ee&#xff09;<\/p>\n<p>10. \u5b8c\u6574\u6587\u4ef6\u6e05\u5355<\/p>\n<p>\u5230\u8fd9\u91cc&#xff0c;\u4e00\u4e2a\u6700\u5c0f UART Driver \u6240\u9700\u7684\u5168\u90e8\u6587\u4ef6\u5df2\u7ecf\u9f50\u4e86&#xff1a;<\/p>\n<p>dts\/bindings\/serial\/mycompany,myuart.yaml   <span class=\"token comment\"># Binding YAML&#xff1a;\u5b9a\u4e49\u5c5e\u6027 schema<\/span><br \/>\ndts\/arm\/mycompany\/mycompany_x1.dtsi         <span class=\"token comment\"># Devicetree&#xff1a;\u63cf\u8ff0\u786c\u4ef6\u5b9e\u4f8b<\/span><br \/>\ndrivers\/serial\/uart_mycompany.c             <span class=\"token comment\"># Driver \u6e90\u7801&#xff1a;\u5b9e\u73b0\u786c\u4ef6\u64cd\u4f5c<\/span><br \/>\ndrivers\/serial\/Kconfig.mycompany            <span class=\"token comment\"># Kconfig&#xff1a;\u5b9a\u4e49\u7f16\u8bd1\u5f00\u5173<\/span><br \/>\ndrivers\/serial\/CMakeLists.txt               <span class=\"token comment\"># CMake&#xff1a;\u628a\u6e90\u7801\u52a0\u5165\u6784\u5efa<\/span><\/p>\n<p>\u628a\u8fd9\u4e94\u4e2a\u6587\u4ef6\u653e\u8fdb Zephyr \u5de5\u7a0b\u5bf9\u5e94\u76ee\u5f55&#xff0c;\u518d\u5728 prj.conf \u6253\u5f00 CONFIG_MYCOMPANY_UART&#061;y&#xff0c;\u5c31\u53ef\u4ee5\u7f16\u8bd1\u8fd0\u884c\u4e86\u3002\u4e0b\u4e00\u7bc7 08&#xff0c;\u6211\u4eec\u5c31\u57fa\u4e8e\u8fd9\u5957\u5b8c\u6574\u4ee3\u7801&#xff0c;\u628a\u5b83\u771f\u6b63\u7f16\u8bd1\u8fd0\u884c\u8d77\u6765&#xff0c;\u8f93\u51fa hello world\u3002<\/p>\n<p>\u6211\u5efa\u8bae\u4f60\u7684 BSP \u4e13\u680f\u63a5\u4e0b\u6765\u4e0d\u8981\u9a6c\u4e0a\u7ee7\u7eed\u8bb2\u4e00\u5806 Driver API&#xff0c;\u800c\u662f\u505a\u4e00\u4e2a\u5b8c\u6574\u7684\u6700\u5c0f\u5b9e\u6218&#xff1a;<\/p>\n<p>08 \u2014 \u7b2c\u4e00\u4e2a SoC Driver&#xff1a;UART<\/p>\n<p>\u76f4\u63a5\u505a&#xff1a;<\/p>\n<p>Company SoC<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nUART hardware<br \/>\n\u2502<br \/>\n\u251c\u2500\u2500 register definition<br \/>\n\u251c\u2500\u2500 Devicetree <span class=\"token function\">node<\/span><br \/>\n\u251c\u2500\u2500 Binding YAML<br \/>\n\u251c\u2500\u2500 Kconfig<br \/>\n\u251c\u2500\u2500 CMake<br \/>\n\u2514\u2500\u2500 UART Driver<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nZephyr UART API<br \/>\n\u2502<br \/>\n\u25bc<br \/>\nhello world<\/p>\n<p>\u6700\u7ec8\u5f62\u6210\u4e00\u6761\u771f\u6b63\u5b8c\u6574\u7684&#xff1a;<\/p>\n<p>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502 Application  \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n   \u2502<br \/>\nUART API<br \/>\n   \u2502<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u25bc\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502 UART Driver  \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n       \u2502<br \/>\nDT_INST_* macros<br \/>\n       \u2502<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u25bc\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502 Devicetree   \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n       \u2502<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u25bc\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502 Binding YAML \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<br \/>\n       \u2502<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u25bc\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502 SoC UART     \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/p>\n<p>\u8fd9\u4f1a\u6bd4\u5355\u72ec\u5b66\u4e60 DEVICE_DT_DEFINE()\u3001DT_INST_REG_ADDR() \u7b49\u5b8f\u66f4\u6709\u4ef7\u503c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6458\u8981&#xff1a;\u627f\u63a5\u7b2c 06 \u7bc7\u7684 Devicetree \u5b9e\u6218&#xff0c;\u672c\u7bc7\u8fdb\u5165 SoC BSP \u7684\u9a71\u52a8\u5c42&#xff0c;\u6838\u5fc3\u4e3b\u7ebf\u662f\u300cBinding \u5b9a\u4e49\u89c4\u5219\u3001DTS \u63cf\u8ff0\u5b9e\u4f8b\u3001Driver \u6267\u884c\u64cd\u4f5c\u300d\u3002\u901a\u8fc7\u4e00\u4e2a\u5b8c\u6574 UART \u5b9e\u4f8b&#xff0c;\u4e32\u8054 Binding YAML \u2192 Devicetree \u8282\u70b9 \u2192 Driver \u5b8f\u7684\u7f16\u8bd1\u671f\u94fe\u8def&#xff0c;\u5e76\u5256\u6790 Config\/Data \u6a21\u5f0f\u4e0e\u591a\u5b9e\u4f8b\u751f\u6210\u673a\u5236&#xff0c;\u4e3a\u4e0b\u4e00\u7bc7 UART Driver \u6700\u5c0f\u5b9e\u6218<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,217,103,269],"topic":[],"class_list":["post-105681","post","type-post","status-publish","format-standard","hentry","category-server","tag-linux","tag-stm32","tag-ubuntu","tag-269"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u8f7b\u677e\u5b66\u4e60Zephyr BSP: 07-SoC\u9a71\u52a8\u4e0e\u8bbe\u5907\u6811\u7ed1\u5b9a - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/105681.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u8f7b\u677e\u5b66\u4e60Zephyr BSP: 07-SoC\u9a71\u52a8\u4e0e\u8bbe\u5907\u6811\u7ed1\u5b9a - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6458\u8981&#xff1a;\u627f\u63a5\u7b2c 06 \u7bc7\u7684 Devicetree \u5b9e\u6218&#xff0c;\u672c\u7bc7\u8fdb\u5165 SoC BSP \u7684\u9a71\u52a8\u5c42&#xff0c;\u6838\u5fc3\u4e3b\u7ebf\u662f\u300cBinding \u5b9a\u4e49\u89c4\u5219\u3001DTS \u63cf\u8ff0\u5b9e\u4f8b\u3001Driver \u6267\u884c\u64cd\u4f5c\u300d\u3002\u901a\u8fc7\u4e00\u4e2a\u5b8c\u6574 UART \u5b9e\u4f8b&#xff0c;\u4e32\u8054 Binding YAML \u2192 Devicetree \u8282\u70b9 \u2192 Driver \u5b8f\u7684\u7f16\u8bd1\u671f\u94fe\u8def&#xff0c;\u5e76\u5256\u6790 Config\/Data \u6a21\u5f0f\u4e0e\u591a\u5b9e\u4f8b\u751f\u6210\u673a\u5236&#xff0c;\u4e3a\u4e0b\u4e00\u7bc7 UART Driver \u6700\u5c0f\u5b9e\u6218\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/105681.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-15T13:08:22+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"20 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/105681.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/105681.html\",\"name\":\"\u8f7b\u677e\u5b66\u4e60Zephyr BSP: 07-SoC\u9a71\u52a8\u4e0e\u8bbe\u5907\u6811\u7ed1\u5b9a - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-09-15T13:08:22+00:00\",\"dateModified\":\"2026-09-15T13:08:22+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/105681.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/105681.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/105681.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u8f7b\u677e\u5b66\u4e60Zephyr BSP: 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