{"id":100307,"date":"2026-09-04T13:00:59","date_gmt":"2026-09-04T05:00:59","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/100307.html"},"modified":"2026-09-04T13:00:59","modified_gmt":"2026-09-04T05:00:59","slug":"stm32l431-%e4%bd%8e%e5%8a%9f%e8%80%97%e5%ae%9e%e6%88%98%ef%bc%9astop2-%e6%a8%a1%e5%bc%8f-lpuart-%e5%94%a4%e9%86%92-%e5%ae%9e%e6%b5%8b%e7%94%b5%e6%b5%81%e5%af%b9%e6%af%94","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/100307.html","title":{"rendered":"STM32L431 \u4f4e\u529f\u8017\u5b9e\u6218\uff1aSTOP2 \u6a21\u5f0f + LPUART \u5524\u9192 + \u5b9e\u6d4b\u7535\u6d41\u5bf9\u6bd4"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\n<ul>\n<li>\u4e00\u3001\u4e3a\u4ec0\u4e48\u4f60\u7684\u4f4e\u529f\u8017\u8bbe\u5907&#034;\u7761\u4e0d\u8e0f\u5b9e&#034;<\/li>\n<li>\n<ul>\n<li>1.1 \u4e00\u4e2a\u5178\u578b\u7684\u7535\u6c60\u9879\u76ee\u7ffb\u8f66\u73b0\u573a<\/li>\n<li>1.2 \u672c\u6587\u8981\u89e3\u51b3\u7684\u95ee\u9898<\/li>\n<li>1.3 \u524d\u7f6e\u6761\u4ef6<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001STM32L4 \u4f4e\u529f\u8017\u6a21\u5f0f\u5168\u666f<\/li>\n<li>\n<ul>\n<li>2.1 \u529f\u8017\u9636\u68af&#xff1a;\u4ece Run \u5230 Shutdown<\/li>\n<li>2.2 STOP0 \/ STOP1 \/ STOP2 \u7684\u672c\u8d28\u533a\u522b<\/li>\n<li>2.3 \u505c\u6b62\u6a21\u5f0f\u4e0b\u8fd8&#034;\u6d3b\u7740&#034;\u7684\u8d44\u6e90<\/li>\n<\/ul>\n<\/li>\n<li>\u4e09\u3001\u65b9\u6848\u9009\u578b&#xff1a;\u4e3a\u4ec0\u4e48\u662f STOP2 &#043; LPUART<\/li>\n<li>\n<ul>\n<li>3.1 \u4e09\u79cd\u5524\u9192\u65b9\u6848\u7684\u5bf9\u6bd4<\/li>\n<li>3.2 \u65f6\u949f\u6e90\u9009\u62e9&#xff1a;LSE \u8fd8\u662f LSI<\/li>\n<li>3.3 \u5173\u952e\u8bbe\u8ba1\u51b3\u7b56\u603b\u7ed3<\/li>\n<\/ul>\n<\/li>\n<li>\u56db\u3001\u786c\u4ef6\u51c6\u5907\u4e0e\u529f\u8017\u6d4b\u91cf\u65b9\u6cd5<\/li>\n<li>\n<ul>\n<li>4.1 \u6700\u5c0f\u7cfb\u7edf\u4e0e LPUART \u63a5\u7ebf<\/li>\n<li>4.2 \u7535\u6d41\u6d4b\u91cf&#xff1a;\u4e07\u7528\u8868\u4e0e\u793a\u6ce2\u5668\u7684\u5206\u5de5<\/li>\n<li>4.3 \u6d4b\u91cf\u6ce8\u610f\u4e8b\u9879<\/li>\n<\/ul>\n<\/li>\n<li>\u4e94\u3001CubeMX \u5de5\u7a0b\u914d\u7f6e\u8981\u70b9<\/li>\n<li>\n<ul>\n<li>5.1 \u65f6\u949f\u6811\u914d\u7f6e<\/li>\n<li>5.2 LPUART1 \u914d\u7f6e<\/li>\n<li>5.3 RTC \u914d\u7f6e<\/li>\n<li>5.4 \u5173\u952e\u914d\u7f6e\u53c2\u6570\u8868<\/li>\n<\/ul>\n<\/li>\n<li>\u516d\u3001\u6838\u5fc3\u4ee3\u7801\u5b9e\u73b0<\/li>\n<li>\n<ul>\n<li>6.1 \u5de5\u7a0b\u6587\u4ef6\u7ed3\u6784<\/li>\n<li>6.2 low_power.h \u2014\u2014 \u4f4e\u529f\u8017\u7ba1\u7406\u63a5\u53e3<\/li>\n<li>6.3 low_power.c \u2014\u2014 \u8fdb\u5165\u4e0e\u6062\u590d<\/li>\n<li>6.4 lpuart_wakeup.c \u2014\u2014 \u4e32\u53e3\u5524\u9192<\/li>\n<li>6.5 rtc_wakeup.c \u2014\u2014 \u5b9a\u65f6\u5524\u9192<\/li>\n<li>6.6 main.c \u2014\u2014 \u4e3b\u6d41\u7a0b<\/li>\n<li>6.7 \u901a\u4fe1\u534f\u8bae\u8bbe\u8ba1&#xff1a;\u4e3a\u4ec0\u4e48\u9700\u8981\u540c\u6b65\u5934<\/li>\n<\/ul>\n<\/li>\n<li>\u4e03\u3001\u5b9e\u6d4b\u6570\u636e&#xff1a;\u7406\u8bba vs \u5b9e\u6d4b<\/li>\n<li>\n<ul>\n<li>7.1 \u5f85\u673a\u7535\u6d41\u5b9e\u6d4b<\/li>\n<li>7.2 \u5524\u9192\u5ef6\u8fdf\u5b9e\u6d4b<\/li>\n<li>7.3 \u6570\u636e\u5b8c\u6574\u6027\u5b9e\u6d4b<\/li>\n<li>7.4 \u5931\u8d25\u8def\u5f84\u8bb0\u5f55&#xff1a;\u4ece 217\u03bcA \u5230 1.32\u03bcA \u7684\u6392\u67e5\u8fc7\u7a0b<\/li>\n<\/ul>\n<\/li>\n<li>\u516b\u3001\u6545\u969c\u6392\u67e5&#xff1a;\u4ece&#034;\u7761\u4e0d\u6b7b&#034;\u5230&#034;\u5524\u4e0d\u9192&#034;<\/li>\n<li>\n<ul>\n<li>8.1 \u5f85\u673a\u7535\u6d41\u5c45\u9ad8\u4e0d\u4e0b&#xff08;\u6700\u5e38\u89c1\u539f\u56e0&#xff09;<\/li>\n<li>8.2 \u8fdb\u5165 STOP2 \u540e\u7acb\u5373\u88ab\u5524\u9192<\/li>\n<li>8.3 LPUART \u5524\u9192\u540e\u9996\u5b57\u8282\u4e22\u5931<\/li>\n<li>8.4 \u5524\u9192\u540e\u4e32\u53e3\u4e71\u7801<\/li>\n<li>8.5 \u5524\u9192\u540e\u7a0b\u5e8f\u8dd1\u98de<\/li>\n<li>8.6 RTC \u5b9a\u65f6\u5524\u9192\u4e0d\u89e6\u53d1<\/li>\n<li>8.7 \u8c03\u8bd5\u5668\u8fde\u4e0d\u4e0a<\/li>\n<li>8.8 \u4f4e\u6e29\u4e0b&#034;\u7761\u8fc7\u5934&#034;&#xff08;\u771f\u5b9e\u8e29\u5751&#xff09;<\/li>\n<\/ul>\n<\/li>\n<li>\u4e5d\u3001\u603b\u7ed3\u4e0e\u6269\u5c55<\/li>\n<li>\n<ul>\n<li>9.1 \u6838\u5fc3\u8981\u70b9\u56de\u987e<\/li>\n<li>9.2 \u9002\u7528\u8fb9\u754c<\/li>\n<li>9.3 \u5c40\u9650\u6027\u4e0e\u5df2\u77e5\u95ee\u9898<\/li>\n<li>9.4 \u6269\u5c55\u65b9\u5411<\/li>\n<\/ul>\n<\/li>\n<li>\u53c2\u8003\u8d44\u6599\u4e0e\u7248\u672c\u5907\u6ce8<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u6458\u8981&#xff1a;\u7535\u6c60\u4f9b\u7535\u7684\u7269\u8054\u7f51\u7ec8\u7aef\u666e\u904d\u9762\u4e34\u5f85\u673a\u7535\u6d41\u5c45\u9ad8\u4e0d\u4e0b\u7684\u95ee\u9898&#xff0c;\u5f88\u591a\u9879\u76ee\u628a MCU \u653e\u8fdb STOP \u6a21\u5f0f\u540e\u5b9e\u6d4b\u7535\u6d41\u4ecd\u5728\u51e0\u5341\u751a\u81f3\u4e0a\u767e\u5fae\u5b89&#xff0c;\u4e00\u5757 1000mAh \u7684\u9502\u7535\u6c60\u6491\u4e0d\u8fc7\u534a\u5e74\u3002\u672c\u6587\u57fa\u4e8e STM32L431RCT6 \u8bbe\u8ba1\u4e86\u4e00\u5957&#034;STOP2 \u6df1\u5ea6\u4f11\u7720 &#043; LPUART \u8d77\u59cb\u4f4d\u5524\u9192 &#043; RTC \u5b9a\u65f6\u5524\u9192&#034;\u7684\u53cc\u901a\u9053\u4f4e\u529f\u8017\u65b9\u6848&#xff0c;\u5e76\u5b8c\u6574\u8bb0\u5f55\u8c03\u8bd5\u8fc7\u7a0b\u4e0e\u5b9e\u6d4b\u6570\u636e&#xff1a;\u5f85\u673a\u7535\u6d41\u4ece\u8fd0\u884c\u6001\u7684 2.1mA \u538b\u5230 1.32\u03bcA&#xff08;\u529f\u8017\u964d\u4f4e\u7ea6 1590 \u500d&#xff09;&#xff0c;LPUART \u5728 9600bps \u4e0b\u5524\u9192\u5ef6\u8fdf\u7ea6 93\u03bcs&#xff0c;1000 \u6b21\u5524\u9192\u6d4b\u8bd5\u6210\u529f\u7387 100%&#xff0c;\u914d\u5408 2 \u5b57\u8282\u540c\u6b65\u5934\u540e\u9996\u5b57\u8282\u4e22\u5931\u7387\u4ece 3.2% \u964d\u5230 0\u3002\u6587\u7ae0\u8986\u76d6\u6a21\u5f0f\u9009\u578b\u3001CubeMX \u914d\u7f6e\u3001\u5b8c\u6574\u5de5\u7a0b\u4ee3\u7801\u3001\u7406\u8bba\u503c\u4e0e\u5b9e\u6d4b\u503c\u504f\u5dee\u5206\u6790\u4ee5\u53ca 8 \u7c7b\u5178\u578b\u6545\u969c\u6392\u67e5&#xff0c;\u9002\u5408\u6b63\u5728\u505a\u7535\u6c60\u4f9b\u7535\u4ea7\u54c1\u7684\u5d4c\u5165\u5f0f\u5de5\u7a0b\u5e08\u53c2\u8003\u3002<\/p>\n<h3>\u4e00\u3001\u4e3a\u4ec0\u4e48\u4f60\u7684\u4f4e\u529f\u8017\u8bbe\u5907&#034;\u7761\u4e0d\u8e0f\u5b9e&#034;<\/h3>\n<h4>1.1 \u4e00\u4e2a\u5178\u578b\u7684\u7535\u6c60\u9879\u76ee\u7ffb\u8f66\u73b0\u573a<\/h4>\n<p>\u53bb\u5e74\u63a5\u4e86\u4e00\u4e2a\u73af\u5883\u76d1\u6d4b\u8282\u70b9\u7684\u9700\u6c42&#xff1a;\u5355\u8282 18650 \u9502\u7535\u6c60\u4f9b\u7535&#xff0c;\u8981\u6c42\u5f85\u673a\u529f\u8017\u8db3\u591f\u6491\u4e24\u5e74\u3002\u7b2c\u4e00\u7248\u539f\u578b\u5f88\u5feb\u8dd1\u8d77\u6765\u4e86&#xff0c;\u4e3b\u63a7\u7528 STM32L431&#xff0c;\u91c7\u96c6\u5b8c\u6570\u636e\u540e\u8c03\u7528 HAL_PWREx_EnterSTOP2Mode() \u8fdb\u5165\u4f11\u7720\u3002\u7ed3\u679c\u6ee1\u6000\u671f\u5f85\u5730\u628a\u4e07\u7528\u8868\u4e32\u8fdb\u7535\u6e90\u56de\u8def\u4e00\u770b\u2014\u2014217\u03bcA&#xff0c;\u79bb\u76ee\u6807\u5dee\u4e86\u6574\u6574\u4e24\u4e2a\u6570\u91cf\u7ea7\u3002<\/p>\n<p>\u66f4\u9ebb\u70e6\u7684\u662f&#xff0c;\u7528\u4e32\u53e3\u53d1\u6570\u636e\u5524\u9192\u540e&#xff0c;\u6536\u5230\u7684\u7b2c\u4e00\u5e27\u6c38\u8fdc\u662f\u4e71\u7684&#xff0c;\u7b2c\u4e8c\u5e27\u5f00\u59cb\u624d\u6b63\u5e38\u3002\u5f53\u65f6\u82b1\u4e86\u4e24\u5929\u624d\u5b9a\u4f4d\u5230\u6839\u56e0&#xff0c;\u8fc7\u7a0b\u975e\u5e38\u5178\u578b&#xff1a;\u5148\u6000\u7591\u662f LPUART \u914d\u7f6e\u95ee\u9898&#xff0c;\u540e\u6765\u7528\u793a\u6ce2\u5668\u6293 RX \u5f15\u811a\u6ce2\u5f62\u624d\u53d1\u73b0\u95ee\u9898\u6839\u672c\u4e0d\u5728\u5524\u9192\u94fe\u8def&#xff0c;\u800c\u5728 GPIO \u72b6\u6001\u548c\u65f6\u949f\u6062\u590d\u987a\u5e8f\u4e0a\u3002<\/p>\n<p>\u8fd9\u4e2a\u9879\u76ee\u6700\u7ec8\u628a\u5f85\u673a\u7535\u6d41\u538b\u5230\u4e86 1.32\u03bcA&#xff0c;\u5524\u9192\u94fe\u8def 1000 \u6b21\u6d4b\u8bd5\u96f6\u5931\u8d25\u3002\u672c\u6587\u628a\u5b8c\u6574\u7684\u65b9\u6848\u9009\u578b\u3001\u5de5\u7a0b\u914d\u7f6e\u3001\u4ee3\u7801\u5b9e\u73b0\u3001\u5b9e\u6d4b\u6570\u636e\u548c\u8e29\u5751\u8fc7\u7a0b\u6574\u7406\u51fa\u6765&#xff0c;\u5e0c\u671b\u5e2e\u4f60\u5c11\u8d70\u8fd9\u4e24\u5929\u7684\u5f2f\u8def\u3002<\/p>\n<h4>1.2 \u672c\u6587\u8981\u89e3\u51b3\u7684\u95ee\u9898<\/h4>\n<ul>\n<li>\u5982\u4f55\u628a STM32L431 \u7684\u5f85\u673a\u7535\u6d41\u4ece&#034;\u6807\u79f0 1\u03bcA \u4f46\u5b9e\u9645\u51e0\u5341\u5fae\u5b89&#034;\u538b\u5230\u771f\u6b63\u7684\u5fae\u5b89\u7ea7&#xff1b;<\/li>\n<li>\u5982\u4f55\u5728 STOP2 \u6a21\u5f0f\u4e0b\u540c\u65f6\u652f\u6301&#034;\u4e32\u53e3\u6570\u636e\u5524\u9192&#034;\u548c&#034;\u5b9a\u65f6\u5524\u9192&#034;\u4e24\u79cd\u901a\u9053&#xff1b;<\/li>\n<li>\u5982\u4f55\u4fdd\u8bc1\u5524\u9192\u540e\u901a\u4fe1\u4e0d\u4e22\u5b57\u8282\u3001\u65f6\u949f\u4e0d\u6df7\u4e71\u3001\u7cfb\u7edf\u4e0d\u8dd1\u98de&#xff1b;<\/li>\n<li>\u6570\u636e\u624b\u518c\u7684\u7406\u8bba\u503c\u548c\u5b9e\u6d4b\u503c\u5230\u5e95\u5dee\u591a\u5c11\u3001\u5dee\u5728\u54ea\u3002<\/li>\n<\/ul>\n<h4>1.3 \u524d\u7f6e\u6761\u4ef6<\/h4>\n<ul>\n<li>\u719f\u6089 STM32CubeMX \u7684\u57fa\u672c\u64cd\u4f5c&#xff0c;\u80fd\u751f\u6210 HAL \u5e93\u5de5\u7a0b&#xff1b;<\/li>\n<li>\u6709\u4e00\u5757 STM32L431&#xff08;\u6216\u540c\u7cfb\u5217 L4&#xff09;\u5f00\u53d1\u677f\u3001\u4e00\u4e2a USB-TTL\u3001\u4e00\u5757\u4e07\u7528\u8868&#xff08;\u03bcA \u6863\u5206\u8fa8\u7387\u81f3\u5c11 0.1\u03bcA&#xff0c;\u63a8\u8350\u5e26 0.01\u03bcA \u6863&#xff09;&#xff1b;<\/li>\n<li>\u4f1a\u770b\u57fa\u7840\u539f\u7406\u56fe&#xff0c;\u80fd\u5206\u6e05\u7535\u6e90\u56de\u8def\u4e32\u5165\u7535\u6d41\u8868\u7684\u4f4d\u7f6e\u3002<\/li>\n<\/ul>\n<p>\u5b8c\u6574\u5de5\u7a0b\u4ee3\u7801\u53ef\u901a\u8fc7 CSDN \u4e0b\u8f7d\u9891\u9053 \u83b7\u53d6&#xff08;VIP \u514d\u8d39&#xff09;\u3002<\/p>\n<h3>\u4e8c\u3001STM32L4 \u4f4e\u529f\u8017\u6a21\u5f0f\u5168\u666f<\/h3>\n<h4>2.1 \u529f\u8017\u9636\u68af&#xff1a;\u4ece Run \u5230 Shutdown<\/h4>\n<p>STM32L4 \u7cfb\u5217\u63d0\u4f9b\u4e86 7 \u79cd\u529f\u8017\u6a21\u5f0f&#xff0c;\u4ece\u9ad8\u5230\u4f4e\u5f62\u6210\u4e00\u4e2a\u5b8c\u6574\u7684&#034;\u6027\u80fd-\u529f\u8017&#034;\u6743\u8861\u7a7a\u95f4\u3002\u8fd9\u91cc\u5148\u7528\u4e00\u5f20\u56fe\u628a\u5168\u8c8c\u6446\u51fa\u6765&#xff1a;<\/p>\n<p>  #mermaid-svg-Y8CG3RYhZk6mMQTw{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes 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.marker{fill:#333333;stroke:#333333;}#mermaid-svg-Y8CG3RYhZk6mMQTw .marker.cross{stroke:#333333;}#mermaid-svg-Y8CG3RYhZk6mMQTw svg{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-Y8CG3RYhZk6mMQTw p{margin:0;}#mermaid-svg-Y8CG3RYhZk6mMQTw .label{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;color:#333;}#mermaid-svg-Y8CG3RYhZk6mMQTw .cluster-label text{fill:#333;}#mermaid-svg-Y8CG3RYhZk6mMQTw .cluster-label span{color:#333;}#mermaid-svg-Y8CG3RYhZk6mMQTw .cluster-label span p{background-color:transparent;}#mermaid-svg-Y8CG3RYhZk6mMQTw .label text,#mermaid-svg-Y8CG3RYhZk6mMQTw span{fill:#333;color:#333;}#mermaid-svg-Y8CG3RYhZk6mMQTw .node rect,#mermaid-svg-Y8CG3RYhZk6mMQTw .node circle,#mermaid-svg-Y8CG3RYhZk6mMQTw .node ellipse,#mermaid-svg-Y8CG3RYhZk6mMQTw .node polygon,#mermaid-svg-Y8CG3RYhZk6mMQTw .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-Y8CG3RYhZk6mMQTw .rough-node .label text,#mermaid-svg-Y8CG3RYhZk6mMQTw .node .label text,#mermaid-svg-Y8CG3RYhZk6mMQTw .image-shape .label,#mermaid-svg-Y8CG3RYhZk6mMQTw .icon-shape .label{text-anchor:middle;}#mermaid-svg-Y8CG3RYhZk6mMQTw .node .katex path{fill:#000;stroke:#000;stroke-width:1px;}#mermaid-svg-Y8CG3RYhZk6mMQTw .rough-node .label,#mermaid-svg-Y8CG3RYhZk6mMQTw .node .label,#mermaid-svg-Y8CG3RYhZk6mMQTw .image-shape .label,#mermaid-svg-Y8CG3RYhZk6mMQTw .icon-shape .label{text-align:center;}#mermaid-svg-Y8CG3RYhZk6mMQTw .node.clickable{cursor:pointer;}#mermaid-svg-Y8CG3RYhZk6mMQTw .root .anchor path{fill:#333333!important;stroke-width:0;stroke:#333333;}#mermaid-svg-Y8CG3RYhZk6mMQTw .arrowheadPath{fill:#333333;}#mermaid-svg-Y8CG3RYhZk6mMQTw .edgePath .path{stroke:#333333;stroke-width:2.0px;}#mermaid-svg-Y8CG3RYhZk6mMQTw .flowchart-link{stroke:#333333;fill:none;}#mermaid-svg-Y8CG3RYhZk6mMQTw .edgeLabel{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-Y8CG3RYhZk6mMQTw .edgeLabel p{background-color:rgba(232,232,232, 0.8);}#mermaid-svg-Y8CG3RYhZk6mMQTw .edgeLabel rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-Y8CG3RYhZk6mMQTw .labelBkg{background-color:rgba(232, 232, 232, 0.5);}#mermaid-svg-Y8CG3RYhZk6mMQTw .cluster rect{fill:#ffffde;stroke:#aaaa33;stroke-width:1px;}#mermaid-svg-Y8CG3RYhZk6mMQTw .cluster text{fill:#333;}#mermaid-svg-Y8CG3RYhZk6mMQTw .cluster span{color:#333;}#mermaid-svg-Y8CG3RYhZk6mMQTw div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:12px;background:hsl(80, 100%, 96.2745098039%);border:1px solid #aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-Y8CG3RYhZk6mMQTw .flowchartTitleText{text-anchor:middle;font-size:18px;fill:#333;}#mermaid-svg-Y8CG3RYhZk6mMQTw rect.text{fill:none;stroke-width:0;}#mermaid-svg-Y8CG3RYhZk6mMQTw .icon-shape,#mermaid-svg-Y8CG3RYhZk6mMQTw .image-shape{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-Y8CG3RYhZk6mMQTw .icon-shape p,#mermaid-svg-Y8CG3RYhZk6mMQTw .image-shape p{background-color:rgba(232,232,232, 0.8);padding:2px;}#mermaid-svg-Y8CG3RYhZk6mMQTw .icon-shape .label rect,#mermaid-svg-Y8CG3RYhZk6mMQTw .image-shape .label rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-Y8CG3RYhZk6mMQTw .label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-Y8CG3RYhZk6mMQTw .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-Y8CG3RYhZk6mMQTw :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;}<\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/p>\n<p>SRAM\/\u5bc4\u5b58\u5668\u4fdd\u7559<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/p>\n<p>\u4ec5\u5907\u4efd\u5bc4\u5b58\u5668\u4fdd\u7559<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>Run \u6a21\u5f0f80MHz \u5168\u901f\u8fd0\u884c~2.1mA&#xff08;\u5b9e\u6d4b&#xff09;<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>Sleep \u6a21\u5f0fCPU \u505c\u6b62&#xff0c;\u5916\u8bbe\u8fd0\u884c~1.5mA&#xff08;\u5b9e\u6d4b&#xff09;<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>Low-power Run \/ SleepMSI \u4f4e\u901f\u8fd0\u884c~20\u03bcA \u91cf\u7ea7<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>Stop 0\u4e3b\u7a33\u538b\u5668\u4fdd\u6301\u6807\u79f0 ~110\u03bcA<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>Stop 1\u4f4e\u529f\u8017\u7a33\u538b\u5668\u6807\u79f0 ~6.6\u03bcA<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>Stop 2\u7a33\u538b\u5668\u5173\u95ed\u6807\u79f0 ~1.0\u03bcA \u2605\u672c\u6587\u4e3b\u89d2<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>Standby\u4ec5\u5907\u4efd\u57df\u4f9b\u7535\u6807\u79f0 ~0.28\u03bcA<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>Shutdown\u5168\u90e8\u65ad\u7535\u6807\u79f0 ~8nA<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/span><\/p>\n<p>\u8fd9\u5f20\u56fe\u91cc\u6700\u5173\u952e\u7684\u4fe1\u606f\u662f&#xff1a;Stop 2 \u662f&#034;\u4fdd\u7559 SRAM \u548c\u5bc4\u5b58\u5668\u72b6\u6001&#034;\u7684\u6700\u4f4e\u529f\u8017\u6863\u4f4d\u3002\u6bd4\u5b83\u66f4\u4f4e\u7684 Standby \u548c Shutdown \u867d\u7136\u7535\u6d41\u66f4\u5c0f&#xff0c;\u4f46\u5524\u9192\u7b49\u4e8e\u590d\u4f4d&#xff0c;RAM \u6570\u636e\u5168\u90e8\u4e22\u5931&#xff0c;\u7edd\u5927\u591a\u6570\u4e1a\u52a1\u573a\u666f\u7528\u4e0d\u4e0a\u3002<\/p>\n<h4>2.2 STOP0 \/ STOP1 \/ STOP2 \u7684\u672c\u8d28\u533a\u522b<\/h4>\n<p>\u4e09\u8005\u7684\u5dee\u5f02\u6838\u5fc3\u5728\u7535\u538b\u8c03\u8282\u5668&#xff08;Regulator&#xff09;\u7684\u72b6\u6001&#xff0c;\u800c\u4e0d\u662f&#034;\u8c01\u5173\u7684\u65f6\u949f\u66f4\u591a&#034;\u3002ST \u5b98\u65b9\u53c2\u8003\u624b\u518c\u91cc\u5bf9\u4e09\u79cd Stop \u6a21\u5f0f\u7684\u63cf\u8ff0&#xff0c;\u53ef\u4ee5\u6d53\u7f29\u6210\u4e0b\u9762\u8fd9\u5f20\u8868&#xff1a;<\/p>\n<table>\n<tr>\u7279\u6027STOP0STOP1STOP2<\/tr>\n<tbody>\n<tr>\n<td>\u7535\u538b\u8c03\u8282\u5668<\/td>\n<td>\u4e3b\u7a33\u538b\u5668&#xff08;MR&#xff09;\u4fdd\u6301<\/td>\n<td>\u4f4e\u529f\u8017\u7a33\u538b\u5668&#xff08;LPR&#xff09;<\/td>\n<td>\u7a33\u538b\u5668\u5173\u95ed<\/td>\n<\/tr>\n<tr>\n<td>\u5178\u578b\u7535\u6d41&#xff08;3V&#xff09;<\/td>\n<td>110\u03bcA<\/td>\n<td>6.6\u03bcA<\/td>\n<td>1.0\u03bcA<\/td>\n<\/tr>\n<tr>\n<td>\u5524\u9192\u65f6\u95f4&#xff08;Flash&#xff09;<\/td>\n<td>~0.7\u03bcs<\/td>\n<td>~4\u03bcs<\/td>\n<td>~8\u03bcs<\/td>\n<\/tr>\n<tr>\n<td>\u4fdd\u7559\u5185\u5bb9<\/td>\n<td>\u5168\u90e8 SRAM &#043; \u5bc4\u5b58\u5668<\/td>\n<td>\u5168\u90e8 SRAM &#043; \u5bc4\u5b58\u5668<\/td>\n<td>\u5168\u90e8 SRAM &#043; \u5bc4\u5b58\u5668<\/td>\n<\/tr>\n<tr>\n<td>\u5524\u9192\u6e90\u8303\u56f4<\/td>\n<td>\u51e0\u4e4e\u6240\u6709\u5916\u8bbe\u4e2d\u65ad\u3001EXTI<\/td>\n<td>\u5927\u90e8\u5206\u5916\u8bbe\u3001EXTI\u3001LPUART\u3001LPTIM\u3001RTC<\/td>\n<td>\u6709\u9650&#xff1a;LPUART\u3001LPTIM1\u3001RTC\u3001I2C3\u3001COMP\u3001\u7279\u5b9a EXTI<\/td>\n<\/tr>\n<tr>\n<td>\u9002\u7528\u573a\u666f<\/td>\n<td>\u9700\u8981\u6781\u5feb\u54cd\u5e94\u7684\u4e2d\u65ad\u5bc6\u96c6\u573a\u666f<\/td>\n<td>\u529f\u8017\u4e0e\u54cd\u5e94\u6298\u4e2d<\/td>\n<td>\u6781\u81f4\u5f85\u673a\u3001\u4f4e\u9891\u5524\u9192<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u76f8\u5173\u9605\u8bfb&#xff1a;\u300a\u6df1\u5165\u5bf9\u6bd4 STM32L4 \u7684 STOP0\/1\/2 \u6a21\u5f0f&#xff0c;\u4e8b\u4ef6\u5524\u9192\u5230\u5e95\u80fd\u7701\u591a\u5c11\u7535\u300b \u2014 \u5bf9\u4e09\u79cd\u6a21\u5f0f\u7684\u4e8b\u4ef6\u5524\u9192\u529f\u8017\u505a\u4e86\u5b9e\u6d4b\u5bf9\u6bd4&#xff0c;\u7ed3\u8bba\u548c\u5b98\u65b9\u6570\u636e\u624b\u518c\u4e00\u81f4\u3002<\/p>\n<h4>2.3 \u505c\u6b62\u6a21\u5f0f\u4e0b\u8fd8&#034;\u6d3b\u7740&#034;\u7684\u8d44\u6e90<\/h4>\n<p>\u8fdb\u5165 STOP2 \u540e&#xff0c;\u5185\u6838\u65f6\u949f\u3001\u7cfb\u7edf\u65f6\u949f&#xff08;MSI\/HSI\/HSE\/PLL&#xff09;\u5168\u90e8\u505c\u6b62&#xff0c;\u4f46\u4ee5\u4e0b\u8d44\u6e90\u4fdd\u6301\u4f9b\u7535\u6216\u53ef\u88ab\u5524\u9192&#xff1a;<\/p>\n<ul>\n<li>\u4f4e\u901f\u65f6\u949f&#xff1a;LSE&#xff08;32.768kHz \u5916\u90e8\u6676\u632f&#xff09;\u3001LSI&#xff08;32kHz \u5185\u90e8 RC&#xff09;\u9ed8\u8ba4\u4fdd\u6301&#xff0c;\u7528\u4e8e\u9a71\u52a8 RTC\u3001LPUART\u3001LPTIM&#xff1b;<\/li>\n<li>\u4f4e\u529f\u8017\u5916\u8bbe&#xff1a;LPUART\u3001LPTIM1\u3001I2C3\u3001COMP\u3001RTC\u3001IWDG \u53ef\u7ee7\u7eed\u8fd0\u884c\u6216\u4f5c\u4e3a\u5524\u9192\u6e90&#xff1b;<\/li>\n<li>GPIO&#xff1a;\u4fdd\u7559\u914d\u7f6e&#xff0c;\u4f46\u53ea\u6709\u7279\u5b9a\u5f15\u811a&#xff08;\u5982 PA0\u3001PC13 \u7b49&#xff09;\u652f\u6301\u5f02\u6b65\u5524\u9192&#xff1b;<\/li>\n<li>SRAM2&#xff1a;\u53ef\u901a\u8fc7 PWR_CR3 \u7684 RRS \u4f4d\u9009\u62e9\u4fdd\u7559&#xff08;\u9ed8\u8ba4\u4fdd\u7559&#xff09;\u3002<\/li>\n<\/ul>\n<p>\u7406\u89e3&#034;\u4ec0\u4e48\u6d3b\u7740\u3001\u4ec0\u4e48\u6b7b\u4e86&#034;\u662f\u4f4e\u529f\u8017\u8c03\u8bd5\u7684\u57fa\u7840\u3002\u7edd\u5927\u591a\u6570&#034;\u7761\u4e0d\u6b7b&#034;\u7684\u95ee\u9898&#xff0c;\u672c\u8d28\u4e0a\u662f\u67d0\u4e2a\u4f60\u4ee5\u4e3a\u5173\u6389\u7684\u5916\u8bbe\u6216\u65f6\u949f\u5176\u5b9e\u8fd8\u5728\u5077\u5077\u8fd0\u884c\u3002<\/p>\n<h3>\u4e09\u3001\u65b9\u6848\u9009\u578b&#xff1a;\u4e3a\u4ec0\u4e48\u662f STOP2 &#043; LPUART<\/h3>\n<h4>3.1 \u4e09\u79cd\u5524\u9192\u65b9\u6848\u7684\u5bf9\u6bd4<\/h4>\n<p>\u4f4e\u529f\u8017\u8bbe\u5907\u6700\u5e38\u89c1\u7684\u9700\u6c42\u662f&#034;\u5916\u90e8\u6709\u6570\u636e\u6765\u5c31\u9192\u3001\u6ca1\u6570\u636e\u5c31\u7761&#034;\u3002\u5b9e\u73b0\u4e32\u53e3\u5524\u9192\u6709\u4e09\u79cd\u4e3b\u6d41\u65b9\u6848&#xff0c;\u6211\u6700\u521d\u4e5f\u7ea0\u7ed3\u8fc7&#xff0c;\u6700\u7ec8\u9009\u62e9\u4e86\u7b2c\u4e09\u79cd&#xff1a;<\/p>\n<table>\n<tr>\u65b9\u6848\u539f\u7406\u5f85\u673a\u7535\u6d41\u5524\u9192\u540e\u9996\u5b57\u8282\u5b9e\u73b0\u590d\u6742\u5ea6<\/tr>\n<tbody>\n<tr>\n<td>USART &#043; EXTI \u52a8\u6001\u5207\u6362<\/td>\n<td>\u8fdb\u4f11\u7720\u524d\u628a RX \u5f15\u811a\u5207\u6210 EXTI \u4e0b\u964d\u6cbf\u4e2d\u65ad&#xff0c;\u5524\u9192\u540e\u518d\u5207\u56de UART \u529f\u80fd<\/td>\n<td>1.3~1.5\u03bcA<\/td>\n<td>\u5fc5\u7136\u4e22\u5931&#xff08;\u5524\u9192\u65f6\u95f4 &gt; 1 \u5b57\u8282\u65f6\u957f&#xff09;<\/td>\n<td>\u4e2d<\/td>\n<\/tr>\n<tr>\n<td>USART \u65f6\u949f\u4fdd\u6301&#xff08;HSI KERON&#xff09;<\/td>\n<td>\u4fdd\u6301 HSI16 \u4f9b USART \u5728 Stop \u4e0b\u5de5\u4f5c<\/td>\n<td>15~20\u03bcA<\/td>\n<td>\u53ef\u5b8c\u6574\u63a5\u6536<\/td>\n<td>\u4f4e<\/td>\n<\/tr>\n<tr>\n<td>LPUART \u786c\u4ef6\u5524\u9192&#xff08;\u672c\u6587&#xff09;<\/td>\n<td>LPUART \u7528 LSE \u65f6\u949f&#xff0c;\u786c\u4ef6\u68c0\u6d4b\u8d77\u59cb\u4f4d\u81ea\u52a8\u5524\u9192<\/td>\n<td>1.3\u03bcA<\/td>\n<td>\u89c6\u6ce2\u7279\u7387\u53ef\u80fd\u4e22 1~2 \u5b57\u8282&#xff0c;\u52a0\u540c\u6b65\u5934\u89e3\u51b3<\/td>\n<td>\u4e2d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e3a\u4ec0\u4e48\u6700\u7ec8\u9009\u4e86 LPUART&#xff1f; \u6838\u5fc3\u539f\u56e0\u662f\u5b83\u628a&#034;\u68c0\u6d4b\u4e32\u53e3\u8d77\u59cb\u4f4d&#034;\u8fd9\u4ef6\u4e8b\u505a\u6210\u4e86\u786c\u4ef6\u884c\u4e3a&#xff0c;\u4e0d\u4f9d\u8d56\u8f6f\u4ef6\u5e72\u9884&#xff0c;\u4e5f\u4e0d\u9700\u8981\u5728 GPIO \u529f\u80fd\u548c UART \u529f\u80fd\u4e4b\u95f4\u6765\u56de\u5207\u6362\u3002\u76f8\u6bd4\u4e4b\u4e0b&#xff0c;USART &#043; EXTI \u65b9\u6848\u5728\u5207\u6362\u5f15\u811a\u529f\u80fd\u65f6\u5b58\u5728\u4e00\u4e2a\u7ecf\u5178\u7684\u7ade\u6001&#xff1a;EXTI \u89e6\u53d1\u5524\u9192\u540e&#xff0c;\u7cfb\u7edf\u65f6\u949f\u6062\u590d\u9700\u8981\u51e0\u5fae\u79d2&#xff0c;\u6b64\u65f6 UART \u529f\u80fd\u8fd8\u6ca1\u5c31\u7eea&#xff0c;\u8d77\u59cb\u4f4d\u5df2\u7ecf\u8fc7\u53bb\u4e86&#xff0c;\u9996\u5b57\u8282\u5fc5\u7136\u4e22\u5931&#xff1b;\u800c LPUART \u7684\u786c\u4ef6\u5524\u9192\u673a\u5236\u4ece\u68c0\u6d4b\u5230\u8d77\u59cb\u4f4d\u5230 MCU \u5b8c\u5168\u5c31\u7eea\u4e4b\u95f4\u6709\u660e\u786e\u7684\u65f6\u95f4\u53c2\u6570&#xff08;tWULPUART&#xff09;&#xff0c;\u53ef\u4ee5\u9760\u534f\u8bae\u5c42\u8bbe\u8ba1\u6765\u89c4\u907f\u3002<\/p>\n<h4>3.2 \u65f6\u949f\u6e90\u9009\u62e9&#xff1a;LSE \u8fd8\u662f LSI<\/h4>\n<p>LPUART \u5728 STOP2 \u4e0b\u7684\u5185\u6838\u65f6\u949f\u53ea\u6709\u4e24\u4e2a\u9009\u62e9&#xff1a;LSE&#xff08;32.768kHz&#xff09;\u6216 LSI&#xff08;\u7ea6 32kHz&#xff09;\u3002\u4e24\u8005\u5bf9\u6700\u7ec8\u6548\u679c\u5f71\u54cd\u5f88\u5927&#xff1a;<\/p>\n<table>\n<tr>\u5bf9\u6bd4\u7ef4\u5ea6LSE&#xff08;\u5916\u90e8\u6676\u632f&#xff09;LSI&#xff08;\u5185\u90e8 RC&#xff09;<\/tr>\n<tbody>\n<tr>\n<td>\u9891\u7387\u7cbe\u5ea6<\/td>\n<td>\u00b120ppm \u91cf\u7ea7<\/td>\n<td>\u00b15% \u5de6\u53f3<\/td>\n<\/tr>\n<tr>\n<td>\u6ce2\u7279\u7387\u4e0a\u9650<\/td>\n<td>9600bps&#xff08;\u53ef\u9760&#xff09;<\/td>\n<td>9600bps&#xff08;\u4f46\u8bef\u5dee\u5927&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u4f4e\u6e29\u7a33\u5b9a\u6027<\/td>\n<td>\u6676\u632f\u53ef\u80fd\u8d77\u632f\u56f0\u96be<\/td>\n<td>\u7a33\u5b9a<\/td>\n<\/tr>\n<tr>\n<td>\u989d\u5916\u529f\u8017<\/td>\n<td>\u7ea6 &#043;0.3\u03bcA<\/td>\n<td>\u7ea6 &#043;0.5\u03bcA<\/td>\n<\/tr>\n<tr>\n<td>\u6e29\u5ea6\u6f02\u79fb<\/td>\n<td>\u9700\u8981\u8865\u507f<\/td>\n<td>\u65e0\u9700\u8865\u507f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8fd9\u4e2a\u9879\u76ee\u9009\u62e9\u4e86 LSE&#xff0c;\u7406\u7531\u6709\u4e09\u4e2a&#xff1a;\u4e00\u662f 9600bps \u4e0b LSI \u7684\u9891\u7387\u8bef\u5dee&#xff08;\u00b15%&#xff09;\u5df2\u7ecf\u903c\u8fd1\u63a5\u6536\u5bb9\u5dee\u7684\u8fb9\u7f18&#xff08;LPUART \u63a5\u6536\u5668\u5bb9\u5dee\u7ea6 \u00b13.03%&#xff09;&#xff0c;\u5b9e\u6d4b\u5076\u5c14\u4f1a\u51fa\u73b0\u6821\u9a8c\u9519\u8bef&#xff1b;\u4e8c\u662f RTC \u4e5f\u9700\u8981 LSE \u8d70\u65e5\u5386&#xff0c;\u5171\u7528\u4e00\u9897\u6676\u632f\u4e0d\u589e\u52a0\u6210\u672c&#xff1b;\u4e09\u662f\u540e\u671f\u5982\u679c\u5347\u7ea7\u5230 19200bps&#xff0c;LSE \u662f\u552f\u4e00\u53ef\u9760\u7684\u9009\u62e9\u3002\u5982\u679c\u4f60\u7684\u4ea7\u54c1\u5de5\u4f5c\u5728\u4f4e\u6e29\u73af\u5883\u4e14\u6676\u632f\u8d77\u632f\u4e0d\u53ef\u9760&#xff0c;\u624d\u9700\u8981\u8003\u8651 LSI \u65b9\u6848\u2014\u2014\u6211\u8e29\u8fc7\u8fd9\u4e2a\u5751&#xff0c;\u89c1 8.8 \u8282\u3002<\/p>\n<h4>3.3 \u5173\u952e\u8bbe\u8ba1\u51b3\u7b56\u603b\u7ed3<\/h4>\n<ul>\n<li>\u4f11\u7720\u6a21\u5f0f&#xff1a;STOP2&#xff08;\u4e0d\u662f STOP1 \u4e5f\u4e0d\u662f Standby&#xff09;\u2014\u2014\u8981\u4fdd\u7559 RAM \u72b6\u6001&#xff0c;\u540c\u65f6\u529f\u8017\u8981\u538b\u5230\u5fae\u5b89\u7ea7&#xff1b;<\/li>\n<li>\u5524\u9192\u901a\u9053\u4e00&#xff1a;LPUART \u8d77\u59cb\u4f4d\u5524\u9192\u2014\u2014\u4e32\u53e3\u6765\u6570\u636e\u81ea\u52a8\u9192&#xff0c;\u786c\u4ef6\u5b8c\u6210&#xff1b;<\/li>\n<li>\u5524\u9192\u901a\u9053\u4e8c&#xff1a;RTC \u95f9\u949f\/\u5524\u9192\u5b9a\u65f6\u5668\u2014\u2014\u5468\u671f\u4e0a\u62a5\u573a\u666f\u7528&#xff1b;<\/li>\n<li>\u65f6\u949f&#xff1a;LSE \u540c\u65f6\u4f9b RTC \u548c LPUART&#xff1b;<\/li>\n<li>\u901a\u4fe1\u534f\u8bae&#xff1a;\u5e27\u5934\u52a0 2 \u5b57\u8282\u540c\u6b65\u5934&#xff08;0xAA 0x55&#xff09;&#xff0c;\u5438\u6536\u5524\u9192\u9996\u5b57\u8282\u4e22\u5931\u3002<\/li>\n<\/ul>\n<h3>\u56db\u3001\u786c\u4ef6\u51c6\u5907\u4e0e\u529f\u8017\u6d4b\u91cf\u65b9\u6cd5<\/h3>\n<h4>4.1 \u6700\u5c0f\u7cfb\u7edf\u4e0e LPUART \u63a5\u7ebf<\/h4>\n<p>\u672c\u6587\u4f7f\u7528\u7684\u786c\u4ef6\u7ec4\u5408&#xff1a;<\/p>\n<ul>\n<li>\u4e3b\u63a7&#xff1a;STM32L431RCT6&#xff08;LQFP64&#xff0c;256KB Flash \/ 64KB SRAM&#xff09;<\/li>\n<li>\u6676\u632f&#xff1a;32.768kHz LSE \u6676\u632f&#xff08;\u8d1f\u8f7d\u7535\u5bb9 6pF \u5e76\u8054&#xff09;<\/li>\n<li>\u8c03\u8bd5&#xff1a;ST-LINK&#xff08;SWD \u63a5\u53e3&#xff0c;4 \u7ebf&#xff09;<\/li>\n<li>\u4e32\u53e3&#xff1a;USB-TTL&#xff08;CH340&#xff09;\u63a5 LPUART1 \u7684 PA2&#xff08;TX&#xff09;\/ PA3&#xff08;RX&#xff09;<\/li>\n<li>\u7535\u6e90&#xff1a;3.3V LDO \u4f9b\u7535&#xff0c;\u6d4b\u91cf\u65f6\u7528\u5916\u63a5\u7a33\u538b\u6e90\u66f4\u65b9\u4fbf<\/li>\n<\/ul>\n<p>USB-TTL              STM32L431RCT6<br \/>\n  TX  \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u25ba PA3  (LPUART1_RX)<br \/>\n  RX  \u25c4\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 PA2  (LPUART1_TX)<br \/>\n  GND \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 GND<\/p>\n<p>\u26a0\ufe0f \u5b89\u5168\u8b66\u544a&#xff1a;USB-TTL \u7684 TX\/RX \u4e0e MCU \u4e4b\u95f4\u5efa\u8bae\u4e32\u8054 1k\u03a9 \u7535\u963b&#xff0c;\u9632\u6b62 TTL \u7535\u5e73\u4e0d\u4e00\u81f4\u65f6\u704c\u5165\u8fc7\u5927\u7535\u6d41\u635f\u574f\u5f15\u811a\u3002\u8c03\u8bd5\u4f4e\u529f\u8017\u65f6\u5efa\u8bae\u5148\u7528 USB-TTL \u4f9b\u7535&#xff08;\u9650\u6d41\u4fdd\u62a4&#xff09;&#xff0c;\u786e\u8ba4\u903b\u8f91\u65e0\u8bef\u540e\u518d\u5207\u6362\u5230\u5b9e\u9645\u7535\u6e90\u3002<\/p>\n<h4>4.2 \u7535\u6d41\u6d4b\u91cf&#xff1a;\u4e07\u7528\u8868\u4e0e\u793a\u6ce2\u5668\u7684\u5206\u5de5<\/h4>\n<p>\u6d4b\u91cf\u5f85\u673a\u7535\u6d41\u6709\u4e24\u7c7b\u5de5\u5177&#xff0c;\u7528\u9014\u5b8c\u5168\u4e0d\u540c&#xff1a;<\/p>\n<ul>\n<li>\u4e07\u7528\u8868&#xff08;\u03bcA \u6863&#xff09;&#xff1a;\u6d4b&#034;\u7a33\u6001\u5e73\u5747\u7535\u6d41&#034;\u3002\u628a\u4e07\u7528\u8868\u4e32\u5165 VCC \u56de\u8def&#xff0c;\u6ce8\u610f\u8868\u7b14\u63a5\u6cd5\u2014\u2014\u6d4b\u7535\u6d41\u5fc5\u987b\u4e32\u8054&#xff0c;\u7edd\u4e0d\u80fd\u5e76\u8054\u3002\u6d4b\u91cf\u524d\u5148\u628a\u8868\u6253\u5230\u6700\u9ad8\u7535\u6d41\u6863\u518d\u9010\u7ea7\u4e0b\u964d&#xff0c;\u9632\u6b62\u6d6a\u6d8c\u7535\u6d41\u70e7\u4fdd\u9669\u4e1d\u3002<\/li>\n<li>\u793a\u6ce2\u5668&#xff08;\u7535\u6d41\u63a2\u5934\u6216\u91c7\u6837\u7535\u963b\u6cd5&#xff09;&#xff1a;\u6d4b&#034;\u5524\u9192\u77ac\u95f4\u7684\u7535\u6d41\u8109\u51b2&#034;\u3002\u5728 VCC \u56de\u8def\u4e0a\u4e32\u8054\u4e00\u4e2a 10\u03a9 \u7cbe\u5bc6\u91c7\u6837\u7535\u963b&#xff0c;\u7528\u793a\u6ce2\u5668\u6d4b\u7535\u963b\u4e24\u7aef\u7535\u538b&#xff0c;\u7535\u6d41 &#061; \u7535\u538b \/ 10\u03a9\u3002\u5524\u9192\u77ac\u95f4\u7684\u7535\u6d41\u5c16\u5cf0&#xff08;\u53ef\u80fd\u8fbe\u5230\u51e0 mA&#xff09;\u53ea\u6709\u793a\u6ce2\u5668\u80fd\u770b\u5230\u3002<\/li>\n<\/ul>\n<p>\u26a0\ufe0f \u5b89\u5168\u8b66\u544a&#xff1a;\u9502\u7535\u6c60\u4f9b\u7535\u573a\u666f&#xff0c;\u52a1\u5fc5\u786e\u8ba4 MCU \u5de5\u4f5c\u7535\u538b\u8303\u56f4&#xff08;STM32L431 \u4e3a 1.71V~3.6V&#xff09;\u3002\u9502\u7535\u6c60\u6ee1\u7535 4.2V \u76f4\u63a5\u63a5\u5165\u4f1a\u70e7\u82af\u7247&#xff0c;\u5fc5\u987b\u5148\u7ecf\u8fc7 LDO \u964d\u538b\u3002\u6df1\u5ea6\u653e\u7535\u5230 3.0V \u4ee5\u4e0b\u4f1a\u6c38\u4e45\u635f\u4f24\u9502\u7535\u6c60&#xff0c;\u6d4b\u8bd5\u65f6\u5efa\u8bae\u52a0\u88c5\u8fc7\u653e\u4fdd\u62a4\u677f\u3002<\/p>\n<h4>4.3 \u6d4b\u91cf\u6ce8\u610f\u4e8b\u9879<\/h4>\n<ul>\n<li>\u4e07\u7528\u8868\u4e32\u5165\u56de\u8def\u540e&#xff0c;\u6d4b\u91cf\u5f15\u7ebf\u7684\u63a5\u89e6\u7535\u963b\u4f1a\u5f15\u5165\u989d\u5916\u538b\u964d&#xff0c;\u5bfc\u81f4 LDO \u8f93\u51fa\u504f\u4f4e&#xff0c;\u5efa\u8bae\u7528\u56db\u7ebf\u5236\u6216\u5c3d\u91cf\u7f29\u77ed\u5f15\u7ebf&#xff1b;<\/li>\n<li>\u8fdb\u5165 STOP2 \u540e\u5982\u679c\u4e07\u7528\u8868\u8bfb\u6570\u5728\u51e0\u5fae\u5b89\u548c\u51e0\u5341\u5fae\u5b89\u4e4b\u95f4\u8df3\u52a8&#xff0c;\u5148\u6000\u7591\u662f\u4e0d\u662f SysTick \u4e2d\u65ad\u5728\u5468\u671f\u6027\u5524\u9192 MCU&#xff08;\u89c1 8.2 \u8282&#xff09;&#xff1b;<\/li>\n<li>\u6bcf\u6b21\u4fee\u6539\u4ee3\u7801\u540e\u91cd\u65b0\u6d4b\u91cf&#xff0c;\u8bb0\u5f55\u73af\u5883\u6e29\u5ea6\u2014\u2014\u7535\u6d41\u548c\u6e29\u5ea6\u5f3a\u76f8\u5173&#xff0c;25\u2103 \u548c 0\u2103 \u4e0b\u53ef\u80fd\u5dee 0.3\u03bcA \u4ee5\u4e0a\u3002<\/li>\n<\/ul>\n<h3>\u4e94\u3001CubeMX \u5de5\u7a0b\u914d\u7f6e\u8981\u70b9<\/h3>\n<h4>5.1 \u65f6\u949f\u6811\u914d\u7f6e<\/h4>\n<p>\u7cfb\u7edf\u65f6\u949f\u4f7f\u7528 MSI 4MHz&#xff08;\u7701\u7535\u3001\u542f\u52a8\u5feb&#xff09;&#xff0c;\u4e0d\u9700\u8981\u8dd1 80MHz\u2014\u2014\u4f4e\u529f\u8017\u8bbe\u5907\u7684 CPU \u5927\u90e8\u5206\u65f6\u95f4\u5728\u7761\u89c9&#xff0c;\u8dd1\u9ad8\u9891\u53ea\u4f1a\u589e\u52a0\u5524\u9192\u540e\u7684\u529f\u8017\u3002\u5173\u952e\u662f\u7ed9 LPUART \u548c RTC \u9009\u5bf9\u65f6\u949f\u6e90&#xff1a;<\/p>\n<ul>\n<li>RCC \u2192 LSE \u4f7f\u80fd&#xff08;Crystal\/Ceramic Resonator&#xff09;&#xff1b;<\/li>\n<li>\u65f6\u949f\u6811\u4e2d LPUART1 \u65f6\u949f\u6e90\u9009 LSE&#xff1b;<\/li>\n<li>RTC \u65f6\u949f\u6e90\u9009 LSE&#xff1b;<\/li>\n<li>\u7cfb\u7edf\u65f6\u949f MSI 4MHz&#xff08;\u6216\u6309\u4e1a\u52a1\u9700\u8981\u9009\u5176\u4ed6&#xff0c;\u4f46\u5524\u9192\u540e\u9700\u8981\u91cd\u65b0\u914d\u7f6e&#xff09;\u3002<\/li>\n<\/ul>\n<h4>5.2 LPUART1 \u914d\u7f6e<\/h4>\n<p>\u5728 Connectivity \u2192 LPUART1 \u4e2d&#xff1a;<\/p>\n<ul>\n<li>Mode&#xff1a;Asynchronous&#xff1b;<\/li>\n<li>\u6ce2\u7279\u7387&#xff1a;9600&#xff08;LSE \u65f6\u949f\u4e0b\u53ef\u9760\u4e0a\u9650&#xff09;&#xff1b;<\/li>\n<li>\u6570\u636e\u4f4d 8\u3001\u65e0\u6821\u9a8c\u3001\u505c\u6b62\u4f4d 1&#xff1b;<\/li>\n<li>NVIC&#xff1a;\u4f7f\u80fd LPUART1 global interrupt&#xff1b;<\/li>\n<li>\u5173\u952e&#xff1a;\u751f\u6210\u4ee3\u7801\u540e\u9700\u8981\u624b\u52a8\u52a0\u4e24\u884c&#xff0c;\u4f7f\u80fd STOP2 \u4e0b\u7684\u65f6\u949f\u4fdd\u6301\u548c\u5524\u9192\u529f\u80fd&#xff1a;<span class=\"token function\">HAL_LPUARTEx_EnableClockStopMode<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>hlpuart1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/\/ LPUART \u65f6\u949f\u5728 Stop \u4e0b\u4fdd\u6301<\/span><br \/>\n<span class=\"token function\">__HAL_LPUART_WAKEUP_ENABLE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>hlpuart1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>          <span class=\"token comment\">\/\/ \u4f7f\u80fd\u5524\u9192\u529f\u80fd<\/span>\n <\/li>\n<\/ul>\n<h4>5.3 RTC \u914d\u7f6e<\/h4>\n<ul>\n<li>Activate Clock Source&#xff1a;LSE&#xff1b;<\/li>\n<li>Activate Calendar&#xff1a;\u4f7f\u80fd&#xff08;\u53ef\u9009&#xff0c;\u672c\u6587\u7528\u5230 WakeUp Timer \u5373\u53ef&#xff09;&#xff1b;<\/li>\n<li>\u4f7f\u80fd RTC wakeup timer \u4e2d\u65ad\u3002<\/li>\n<\/ul>\n<h4>5.4 \u5173\u952e\u914d\u7f6e\u53c2\u6570\u8868<\/h4>\n<table>\n<tr>\u914d\u7f6e\u9879\u53c2\u6570\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>\u7cfb\u7edf\u65f6\u949f<\/td>\n<td>MSI 4MHz<\/td>\n<td>\u7701\u7535\u4f18\u5148<\/td>\n<\/tr>\n<tr>\n<td>LSE<\/td>\n<td>\u4f7f\u80fd 32.768kHz<\/td>\n<td>\u4f9b RTC \u548c LPUART<\/td>\n<\/tr>\n<tr>\n<td>LPUART1<\/td>\n<td>9600-8-N-1&#xff0c;\u4e2d\u65ad\u4f7f\u80fd<\/td>\n<td>\u4e32\u53e3\u5524\u9192\u901a\u9053<\/td>\n<\/tr>\n<tr>\n<td>LPUART1 \u65f6\u949f\u6e90<\/td>\n<td>LSE<\/td>\n<td>Stop \u4e0b\u4fdd\u6301<\/td>\n<\/tr>\n<tr>\n<td>RTC \u65f6\u949f\u6e90<\/td>\n<td>LSE<\/td>\n<td>\u5b9a\u65f6\u5524\u9192\u901a\u9053<\/td>\n<\/tr>\n<tr>\n<td>\u672a\u4f7f\u7528\u5f15\u811a<\/td>\n<td>\u5168\u90e8 Analog<\/td>\n<td>\u6d88\u9664\u6f0f\u7535\u6d41&#xff08;\u5173\u952e&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>Debug<\/td>\n<td>SWD \u4f7f\u80fd<\/td>\n<td>\u8c03\u8bd5\u671f\u4fdd\u7559&#xff0c;\u91cf\u4ea7\u5173\u95ed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u516d\u3001\u6838\u5fc3\u4ee3\u7801\u5b9e\u73b0<\/h3>\n<h4>6.1 \u5de5\u7a0b\u6587\u4ef6\u7ed3\u6784<\/h4>\n<p>Core\/<br \/>\n\u251c\u2500\u2500 Inc\/<br \/>\n\u2502   \u251c\u2500\u2500 main.h<br \/>\n\u2502   \u251c\u2500\u2500 low_power.h          \/\/ \u4f4e\u529f\u8017\u7ba1\u7406\u63a5\u53e3<br \/>\n\u2502   \u251c\u2500\u2500 lpuart_wakeup.h      \/\/ LPUART \u5524\u9192\u63a5\u53e3<br \/>\n\u2502   \u2514\u2500\u2500 rtc_wakeup.h         \/\/ RTC \u5b9a\u65f6\u5524\u9192\u63a5\u53e3<br \/>\n\u251c\u2500\u2500 Src\/<br \/>\n\u2502   \u251c\u2500\u2500 main.c<br \/>\n\u2502   \u251c\u2500\u2500 low_power.c          \/\/ \u8fdb\u5165\/\u9000\u51fa STOP2 \u7684\u6838\u5fc3\u903b\u8f91<br \/>\n\u2502   \u251c\u2500\u2500 lpuart_wakeup.c      \/\/ LPUART \u521d\u59cb\u5316\u4e0e\u5524\u9192\u5904\u7406<br \/>\n\u2502   \u2514\u2500\u2500 rtc_wakeup.c         \/\/ RTC \u5524\u9192\u5b9a\u65f6\u5668\u914d\u7f6e<\/p>\n<h4>6.2 low_power.h \u2014\u2014 \u4f4e\u529f\u8017\u7ba1\u7406\u63a5\u53e3<\/h4>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;file low_power.h<br \/>\n * &#064;brief STOP2 \u4f4e\u529f\u8017\u7ba1\u7406\u6a21\u5757\u5934\u6587\u4ef6<br \/>\n *\/<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">ifndef<\/span> <span class=\"token expression\">__LOW_POWER_H<\/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\">__LOW_POWER_H<\/span><\/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\">&#034;stm32l4xx_hal.h&#034;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/* \u5524\u9192\u6e90\u6807\u5fd7\u4f4d *\/<\/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\">WAKE_SRC_LPUART<\/span>  <span class=\"token expression\"><span class=\"token number\">0x01<\/span>   <\/span><span class=\"token comment\">\/* LPUART \u8d77\u59cb\u4f4d\u5524\u9192 *\/<\/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\">WAKE_SRC_RTC<\/span>     <span class=\"token expression\"><span class=\"token number\">0x02<\/span>   <\/span><span class=\"token comment\">\/* RTC \u5b9a\u65f6\u5524\u9192     *\/<\/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\">WAKE_SRC_EXTI<\/span>    <span class=\"token expression\"><span class=\"token number\">0x04<\/span>   <\/span><span class=\"token comment\">\/* \u5916\u90e8 GPIO \u5524\u9192    *\/<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/* \u7cfb\u7edf\u8fd0\u884c\u72b6\u6001 *\/<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">enum<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    SYS_STATE_RUN <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span>     <span class=\"token comment\">\/* \u6b63\u5e38\u8fd0\u884c\u6001 *\/<\/span><br \/>\n    SYS_STATE_ENTERING<span class=\"token punctuation\">,<\/span>    <span class=\"token comment\">\/* \u6b63\u5728\u8fdb\u5165\u4f11\u7720 *\/<\/span><br \/>\n    SYS_STATE_SLEEP<span class=\"token punctuation\">,<\/span>       <span class=\"token comment\">\/* \u5df2\u8fdb\u5165 STOP2 *\/<\/span><br \/>\n    SYS_STATE_WAKEUP       <span class=\"token comment\">\/* \u521a\u4ece STOP2 \u5524\u9192 *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token class-name\">sys_state_t<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u8fdb\u5165 STOP2 \u6a21\u5f0f&#xff08;WFI \u7b49\u5f85\u4e2d\u65ad\u5524\u9192&#xff09;<br \/>\n * &#064;param none<br \/>\n * &#064;retval none<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LowPower_EnterStop2<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u5524\u9192\u540e\u7684\u7cfb\u7edf\u6062\u590d&#xff08;\u65f6\u949f &#043; SysTick &#043; \u5916\u8bbe&#xff09;<br \/>\n * &#064;param wake_src \u5524\u9192\u6e90\u6807\u5fd7&#xff08;WAKE_SRC_xxx&#xff09;<br \/>\n * &#064;retval none<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LowPower_WakeupRecovery<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uint8_t<\/span> wake_src<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u83b7\u53d6\u5f53\u524d\u5524\u9192\u6e90<br \/>\n * &#064;retval WAKE_SRC_xxx \u7ec4\u5408\u6807\u5fd7<br \/>\n *\/<\/span><br \/>\n<span class=\"token class-name\">uint8_t<\/span> <span class=\"token function\">LowPower_GetWakeSource<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u5c06\u672a\u4f7f\u7528\u5f15\u811a\u5168\u90e8\u914d\u7f6e\u4e3a\u6a21\u62df\u8f93\u5165&#xff08;\u6d88\u9664\u6f0f\u7535\u6d41&#xff09;<br \/>\n * &#064;param none<br \/>\n * &#064;retval none<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LowPower_GPIO_AnalogAll<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u6062\u590d\u4e1a\u52a1\u6240\u9700\u7684 GPIO \u914d\u7f6e&#xff08;\u4ece\u6a21\u62df\u8f93\u5165\u5207\u56de\u529f\u80fd\u6a21\u5f0f&#xff09;<br \/>\n * &#064;param none<br \/>\n * &#064;retval none<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LowPower_GPIO_Restore<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u7cfb\u7edf\u72b6\u6001\u67e5\u8be2<br \/>\n * &#064;retval \u5f53\u524d\u7cfb\u7edf\u72b6\u6001<br \/>\n *\/<\/span><br \/>\n<span class=\"token class-name\">sys_state_t<\/span> <span class=\"token function\">LowPower_GetState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">endif<\/span> <span class=\"token comment\">\/* __LOW_POWER_H *\/<\/span><\/span><\/p>\n<h4>6.3 low_power.c \u2014\u2014 \u8fdb\u5165\u4e0e\u6062\u590d<\/h4>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;file low_power.c<br \/>\n * &#064;brief STOP2 \u4f4e\u529f\u8017\u7ba1\u7406\u6a21\u5757\u5b9e\u73b0<br \/>\n *<br \/>\n * \u8bbe\u8ba1\u8981\u70b9&#xff1a;<br \/>\n * 1. \u8fdb\u5165\u524d&#xff1a;\u5173\u95ed SysTick\u3001\u5173\u95ed\u975e\u5fc5\u8981\u5916\u8bbe\u65f6\u949f\u3001GPIO \u6a21\u62df\u5316&#xff1b;<br \/>\n * 2. \u5524\u9192\u540e&#xff1a;\u5148\u6062\u590d\u7cfb\u7edf\u65f6\u949f&#xff0c;\u518d\u6062\u590d SysTick&#xff0c;\u6700\u540e\u6062\u590d\u5916\u8bbe&#xff1b;<br \/>\n * 3. \u987a\u5e8f\u4e0d\u80fd\u53cd\u2014\u2014\u5148\u6062\u590d\u65f6\u949f\u518d\u52a8\u5916\u8bbe&#xff0c;\u5426\u5219\u5916\u8bbe\u5bc4\u5b58\u5668\u914d\u7f6e\u53ef\u80fd\u88ab\u65f6\u949f\u95e8\u63a7\u541e\u6389\u3002<br \/>\n *\/<\/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\">&#034;low_power.h&#034;<\/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\">&#034;lpuart_wakeup.h&#034;<\/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\">&#034;rtc_wakeup.h&#034;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/* \u5916\u90e8\u58f0\u660e\u7684 HAL \u53e5\u67c4&#xff08;\u7531 CubeMX \u751f\u6210&#xff09; *\/<\/span><br \/>\n<span class=\"token keyword\">extern<\/span> RTC_HandleTypeDef hrtc<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">extern<\/span> LPUART_HandleTypeDef hlpuart1<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/* \u5185\u90e8\u72b6\u6001 *\/<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token class-name\">sys_state_t<\/span> s_sys_state <span class=\"token operator\">&#061;<\/span> SYS_STATE_RUN<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token class-name\">uint8_t<\/span> s_wake_src <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/* \u5524\u9192\u540e\u9700\u8981\u91cd\u65b0\u521d\u59cb\u5316\u7684\u5916\u8bbe\u6ce8\u518c\u8868 *\/<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>init_fn<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/* \u5916\u8bbe\u91cd\u65b0\u521d\u59cb\u5316\u51fd\u6570\u6307\u9488 *\/<\/span><br \/>\n    <span class=\"token class-name\">uint8_t<\/span> enabled<span class=\"token punctuation\">;<\/span>         <span class=\"token comment\">\/* \u662f\u5426\u542f\u7528 *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token class-name\">wake_reinit_t<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token class-name\">sys_state_t<\/span> <span class=\"token function\">LowPower_GetState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> s_sys_state<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token class-name\">uint8_t<\/span> <span class=\"token function\">LowPower_GetWakeSource<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> s_wake_src<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u5c06\u672a\u4f7f\u7528\u5f15\u811a\u5168\u90e8\u914d\u7f6e\u4e3a\u6a21\u62df\u8f93\u5165<br \/>\n *<br \/>\n * \u8fd9\u662f\u628a\u5f85\u673a\u7535\u6d41\u4ece 217\u03bcA \u538b\u5230 1.32\u03bcA \u7684\u6700\u5173\u952e\u4e00\u6b65\u3002<br \/>\n * GPIO \u60ac\u7a7a\u6d6e\u7a7a\u8f93\u5165\u65f6&#xff0c;\u8f93\u5165\u7f13\u51b2\u5668\u4f1a\u4ea7\u751f\u704c\u7535\u6d41\/\u62c9\u7535\u6d41&#xff0c;<br \/>\n * \u6bcf\u4e2a\u5f15\u811a\u53ef\u8fbe\u51e0\u5341 \u03bcA\u3002\u914d\u7f6e\u4e3a\u6a21\u62df\u8f93\u5165\u540e\u8f93\u5165\u7f13\u51b2\u5668\u88ab\u7981\u7528&#xff0c;<br \/>\n * \u6f0f\u7535\u6d41\u964d\u5230 nA \u7ea7\u3002<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LowPower_GPIO_AnalogAll<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    GPIO_InitTypeDef gpio_init <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* \u9010\u4e2a\u7aef\u53e3\u5904\u7406&#xff0c;\u4fdd\u7559 SWD \u8c03\u8bd5\u5f15\u811a&#xff08;PA13\/PA14&#xff09; *\/<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>GPIO_TypeDef <span class=\"token operator\">*<\/span>port <span class=\"token operator\">&#061;<\/span> GPIOA<span class=\"token punctuation\">;<\/span> port <span class=\"token operator\">&lt;&#061;<\/span> GPIOE<span class=\"token punctuation\">;<\/span> port<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/* \u8df3\u8fc7\u672a\u542f\u7528\u7684\u7aef\u53e3\u65f6\u949f *\/<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>port <span class=\"token operator\">&#061;&#061;<\/span> GPIOA<span class=\"token punctuation\">)<\/span>      <span class=\"token punctuation\">{<\/span> <span class=\"token function\">__HAL_RCC_GPIOA_CLK_ENABLE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>port <span class=\"token operator\">&#061;&#061;<\/span> GPIOB<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token function\">__HAL_RCC_GPIOB_CLK_ENABLE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>port <span class=\"token operator\">&#061;&#061;<\/span> GPIOC<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token function\">__HAL_RCC_GPIOC_CLK_ENABLE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>port <span class=\"token operator\">&#061;&#061;<\/span> GPIOD<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token function\">__HAL_RCC_GPIOD_CLK_ENABLE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>port <span class=\"token operator\">&#061;&#061;<\/span> GPIOE<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token function\">__HAL_RCC_GPIOE_CLK_ENABLE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">continue<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token class-name\">uint16_t<\/span> pins <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0xFFFF<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/* \u6392\u9664\u8c03\u8bd5\u5f15\u811a&#xff1a;PA13(SWDIO) PA14(SWCLK) *\/<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>port <span class=\"token operator\">&#061;&#061;<\/span> GPIOA<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            pins <span class=\"token operator\">&amp;&#061;<\/span> <span class=\"token operator\">~<\/span><span class=\"token punctuation\">(<\/span>GPIO_PIN_13 <span class=\"token operator\">|<\/span> GPIO_PIN_14<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token comment\">\/* \u6392\u9664 LPUART1 \u5f15\u811a&#xff1a;PA2(TX) PA3(RX) *\/<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>port <span class=\"token operator\">&#061;&#061;<\/span> GPIOA<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            pins <span class=\"token operator\">&amp;&#061;<\/span> <span class=\"token operator\">~<\/span><span class=\"token punctuation\">(<\/span>GPIO_PIN_2 <span class=\"token operator\">|<\/span> GPIO_PIN_3<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        gpio_init<span class=\"token punctuation\">.<\/span>Pin <span class=\"token operator\">&#061;<\/span> pins<span class=\"token punctuation\">;<\/span><br \/>\n        gpio_init<span class=\"token punctuation\">.<\/span>Mode <span class=\"token operator\">&#061;<\/span> GPIO_MODE_ANALOG<span class=\"token punctuation\">;<\/span><br \/>\n        gpio_init<span class=\"token punctuation\">.<\/span>Pull <span class=\"token operator\">&#061;<\/span> GPIO_NOPULL<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">HAL_GPIO_Init<\/span><span class=\"token punctuation\">(<\/span>port<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>gpio_init<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u6062\u590d\u4e1a\u52a1 GPIO \u914d\u7f6e<br \/>\n *<br \/>\n * \u5524\u9192\u540e\u8c03\u7528&#xff0c;\u628a PA2\/PA3 \u4ece\u6a21\u62df\u8f93\u5165\u5207\u56de LPUART \u590d\u7528\u529f\u80fd\u3002<br \/>\n * \u6ce8\u610f&#xff1a;CubeMX \u751f\u6210\u7684 MX_GPIO_Init() \u4f1a\u5168\u91cf\u91cd\u5efa\u6240\u6709\u5f15\u811a&#xff0c;<br \/>\n * \u8fd9\u91cc\u53ea\u91cd\u5efa\u4e1a\u52a1\u5f15\u811a&#xff0c;\u907f\u514d\u8986\u76d6\u4f4e\u529f\u8017\u7ba1\u7406\u903b\u8f91\u3002<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LowPower_GPIO_Restore<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    GPIO_InitTypeDef gpio_init <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* PA2: LPUART1_TX \u590d\u7528\u529f\u80fd *\/<\/span><br \/>\n    gpio_init<span class=\"token punctuation\">.<\/span>Pin <span class=\"token operator\">&#061;<\/span> GPIO_PIN_2<span class=\"token punctuation\">;<\/span><br \/>\n    gpio_init<span class=\"token punctuation\">.<\/span>Mode <span class=\"token operator\">&#061;<\/span> GPIO_MODE_AF_PP<span class=\"token punctuation\">;<\/span><br \/>\n    gpio_init<span class=\"token punctuation\">.<\/span>Pull <span class=\"token operator\">&#061;<\/span> GPIO_NOPULL<span class=\"token punctuation\">;<\/span><br \/>\n    gpio_init<span class=\"token punctuation\">.<\/span>Speed <span class=\"token operator\">&#061;<\/span> GPIO_SPEED_FREQ_VERY_HIGH<span class=\"token punctuation\">;<\/span><br \/>\n    gpio_init<span class=\"token punctuation\">.<\/span>Alternate <span class=\"token operator\">&#061;<\/span> GPIO_AF8_LPUART1<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">HAL_GPIO_Init<\/span><span class=\"token punctuation\">(<\/span>GPIOA<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>gpio_init<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* PA3: LPUART1_RX \u590d\u7528\u529f\u80fd *\/<\/span><br \/>\n    gpio_init<span class=\"token punctuation\">.<\/span>Pin <span class=\"token operator\">&#061;<\/span> GPIO_PIN_3<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">HAL_GPIO_Init<\/span><span class=\"token punctuation\">(<\/span>GPIOA<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>gpio_init<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u8fdb\u5165 STOP2 \u6a21\u5f0f<br \/>\n *<br \/>\n * \u6b65\u9aa4&#xff1a;<br \/>\n * 1. \u6682\u505c SysTick&#xff08;\u5426\u5219 1ms \u4e2d\u65ad\u4f1a\u7acb\u523b\u5524\u9192 MCU&#xff09;&#xff1b;<br \/>\n * 2. \u5173\u95ed\u975e\u5fc5\u8981\u5916\u8bbe\u65f6\u949f&#xff1b;<br \/>\n * 3. GPIO \u6a21\u62df\u5316&#xff08;\u6d88\u9664\u6f0f\u7535\u6d41&#xff09;&#xff1b;<br \/>\n * 4. \u4f7f\u80fd LPUART \u5524\u9192&#xff1b;<br \/>\n * 5. \u6267\u884c WFI \u8fdb\u5165 STOP2\u3002<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LowPower_EnterStop2<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/* \u72b6\u6001\u673a\u9632\u91cd\u5165 *\/<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>s_sys_state <span class=\"token operator\">!&#061;<\/span> SYS_STATE_RUN<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    s_sys_state <span class=\"token operator\">&#061;<\/span> SYS_STATE_ENTERING<span class=\"token punctuation\">;<\/span><br \/>\n    s_wake_src <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 1. \u6682\u505c SysTick&#xff0c;\u9632\u6b62 1ms Tick \u5524\u9192 *\/<\/span><br \/>\n    <span class=\"token function\">HAL_SuspendTick<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 2. \u5173\u95ed\u975e\u5fc5\u8981\u5916\u8bbe\u65f6\u949f&#xff08;\u4fdd\u7559 PWR\u3001RTC\u3001LPUART \u65f6\u949f&#xff09; *\/<\/span><br \/>\n    <span class=\"token function\">__HAL_RCC_TIM2_CLK_DISABLE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">__HAL_RCC_TIM6_CLK_DISABLE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">__HAL_RCC_ADC_CLK_DISABLE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">__HAL_RCC_SPI1_CLK_DISABLE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">__HAL_RCC_I2C1_CLK_DISABLE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 3. GPIO \u6a21\u62df\u5316 *\/<\/span><br \/>\n    <span class=\"token function\">LowPower_GPIO_AnalogAll<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 4. \u4f7f\u80fd LPUART \u5524\u9192\u80fd\u529b&#xff08;\u5fc5\u987b\u5728\u8fdb\u5165\u524d\u5b8c\u6210&#xff09; *\/<\/span><br \/>\n    <span class=\"token function\">LPUART_EnableWakeup<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">RTC_EnableWakeup<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 5. \u6e05\u9664\u6302\u8d77\u7684\u5524\u9192\u6807\u5fd7&#xff0c;\u8fdb\u5165 STOP2 *\/<\/span><br \/>\n    <span class=\"token function\">__HAL_PWR_CLEAR_FLAG<\/span><span class=\"token punctuation\">(<\/span>PWR_FLAG_WU<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    s_sys_state <span class=\"token operator\">&#061;<\/span> SYS_STATE_SLEEP<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">HAL_PWREx_EnterSTOP2Mode<\/span><span class=\"token punctuation\">(<\/span>PWR_STOPENTRY_WFI<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* &#061;&#061;&#061;&#061; \u5524\u9192\u540e\u4ece\u6b64\u5904\u7ee7\u7eed\u6267\u884c &#061;&#061;&#061;&#061; *\/<\/span><br \/>\n    s_sys_state <span class=\"token operator\">&#061;<\/span> SYS_STATE_WAKEUP<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* \u6062\u590d\u7cfb\u7edf *\/<\/span><br \/>\n    <span class=\"token function\">LowPower_WakeupRecovery<\/span><span class=\"token punctuation\">(<\/span>s_wake_src<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u5524\u9192\u540e\u7684\u7cfb\u7edf\u6062\u590d<br \/>\n *<br \/>\n * \u987a\u5e8f\u81f3\u5173\u91cd\u8981&#xff1a;<br \/>\n * 1. \u5148\u6062\u590d\u7cfb\u7edf\u65f6\u949f&#xff08;STOP2 \u5524\u9192\u540e\u9ed8\u8ba4\u56de\u5230 MSI&#xff0c;\u9700\u91cd\u65b0\u914d\u7f6e&#xff09;&#xff1b;<br \/>\n * 2. \u518d\u6062\u590d SysTick&#xff1b;<br \/>\n * 3. \u6062\u590d GPIO \u4e0e\u4e1a\u52a1\u5916\u8bbe&#xff1b;<br \/>\n * 4. \u72b6\u6001\u673a\u590d\u4f4d\u3002<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LowPower_WakeupRecovery<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uint8_t<\/span> wake_src<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/* 1. \u6062\u590d\u7cfb\u7edf\u65f6\u949f&#xff08;CubeMX \u751f\u6210\u7684\u914d\u7f6e\u51fd\u6570&#xff09; *\/<\/span><br \/>\n    <span class=\"token keyword\">extern<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">SystemClock_Config<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">SystemClock_Config<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 2. \u6062\u590d SysTick *\/<\/span><br \/>\n    <span class=\"token function\">HAL_ResumeTick<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 3. \u6062\u590d GPIO \u548c\u5916\u8bbe *\/<\/span><br \/>\n    <span class=\"token function\">LowPower_GPIO_Restore<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">LPUART_WakeupRecovery<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">RTC_WakeupRecovery<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* 4. \u72b6\u6001\u590d\u4f4d *\/<\/span><br \/>\n    s_sys_state <span class=\"token operator\">&#061;<\/span> SYS_STATE_RUN<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* \u8bb0\u5f55\u5524\u9192\u6e90\u4f9b\u4e1a\u52a1\u5c42\u4f7f\u7528 *\/<\/span><br \/>\n    <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span>wake_src<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>6.4 lpuart_wakeup.c \u2014\u2014 \u4e32\u53e3\u5524\u9192<\/h4>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;file lpuart_wakeup.c<br \/>\n * &#064;brief LPUART \u5524\u9192\u529f\u80fd&#xff1a;\u521d\u59cb\u5316\u3001\u4f7f\u80fd\u5524\u9192\u3001\u63a5\u6536\u5904\u7406<br \/>\n *\/<\/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\">&#034;lpuart_wakeup.h&#034;<\/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\">&#034;low_power.h&#034;<\/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;string.h&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">extern<\/span> LPUART_HandleTypeDef hlpuart1<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/* \u63a5\u6536\u7f13\u51b2\u533a *\/<\/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\">RX_BUF_SIZE<\/span>    <span class=\"token expression\"><span class=\"token number\">64<\/span><\/span><\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token class-name\">uint8_t<\/span> s_rx_buf<span class=\"token punctuation\">[<\/span>RX_BUF_SIZE<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token class-name\">uint8_t<\/span> s_rx_idx <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token keyword\">volatile<\/span> <span class=\"token class-name\">uint8_t<\/span> s_rx_complete <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/* \u540c\u6b65\u5934\u5b9a\u4e49&#xff1a;0xAA 0x55 *\/<\/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\">SYNC0<\/span>   <span class=\"token expression\"><span class=\"token number\">0xAA<\/span><\/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\">SYNC1<\/span>   <span class=\"token expression\"><span class=\"token number\">0x55<\/span><\/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\">CMD_LEN<\/span> <span class=\"token expression\"><span class=\"token number\">8<\/span>   <\/span><span class=\"token comment\">\/* \u4e1a\u52a1\u547d\u4ee4\u56fa\u5b9a 8 \u5b57\u8282&#xff1a;2 \u540c\u6b65 &#043; 1 \u547d\u4ee4 &#043; 4 \u6570\u636e &#043; 1 \u6821\u9a8c *\/<\/span><\/span><\/p>\n<p><span class=\"token keyword\">static<\/span> <span class=\"token class-name\">uint8_t<\/span> s_parse_state <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/* 0&#061;\u7b49\u5f85SYNC0, 1&#061;\u7b49\u5f85SYNC1, 2&#061;\u63a5\u6536\u6570\u636e *\/<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u521d\u59cb\u5316 LPUART \u5524\u9192\u529f\u80fd&#xff08;\u8fdb\u5165 STOP2 \u524d\u8c03\u7528&#xff09;<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LPUART_EnableWakeup<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/* \u4f7f\u80fd LPUART \u5728 Stop \u6a21\u5f0f\u4e0b\u4fdd\u6301\u65f6\u949f *\/<\/span><br \/>\n    <span class=\"token function\">HAL_LPUARTEx_EnableClockStopMode<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>hlpuart1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* \u4f7f\u80fd\u8d77\u59cb\u4f4d\u5524\u9192&#xff08;WUS&#061;10 \u68c0\u6d4b Start \u4f4d&#xff09; *\/<\/span><br \/>\n    <span class=\"token function\">__HAL_LPUART_WAKEUP_ENABLE<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>hlpuart1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* \u4f7f\u80fd\u5524\u9192\u4e2d\u65ad *\/<\/span><br \/>\n    <span class=\"token function\">__HAL_LPUART_ENABLE_IT<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>hlpuart1<span class=\"token punctuation\">,<\/span> LPUART_IT_WUF<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u5524\u9192\u540e\u7684\u6062\u590d&#xff08;\u91cd\u65b0\u4f7f\u80fd\u63a5\u6536\u4e2d\u65ad&#xff09;<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LPUART_WakeupRecovery<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/* \u6e05\u7a7a\u63a5\u6536\u72b6\u6001 *\/<\/span><br \/>\n    s_rx_idx <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    s_rx_complete <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    s_parse_state <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* \u91cd\u65b0\u4f7f\u80fd\u63a5\u6536\u4e2d\u65ad&#xff08;STOP2 \u5524\u9192\u540e\u5916\u8bbe\u4e2d\u65ad\u53ef\u80fd\u88ab\u6e05\u6389&#xff09; *\/<\/span><br \/>\n    <span class=\"token function\">__HAL_LPUART_ENABLE_IT<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>hlpuart1<span class=\"token punctuation\">,<\/span> LPUART_IT_RXNE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">HAL_UART_Receive_IT<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>hlpuart1<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>s_rx_buf<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief LPUART \u5168\u5c40\u4e2d\u65ad\u670d\u52a1\u51fd\u6570&#xff08;\u5728 stm32l4xx_it.c \u4e2d\u8c03\u7528&#xff09;<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LPUART1_IRQHandler<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">HAL_LPUART_IRQHandler<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>hlpuart1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief HAL \u5e93\u63a5\u6536\u56de\u8c03&#xff1a;\u6536\u5230 1 \u5b57\u8282<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">HAL_UART_RxCpltCallback<\/span><span class=\"token punctuation\">(<\/span>UART_HandleTypeDef <span class=\"token operator\">*<\/span>huart<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>huart<span class=\"token operator\">-&gt;<\/span>Instance <span class=\"token operator\">&#061;&#061;<\/span> LPUART1<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">uint8_t<\/span> byte <span class=\"token operator\">&#061;<\/span> s_rx_buf<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/* \u72b6\u6001\u673a\u89e3\u6790&#xff1a;\u540c\u6b65\u5934 &#043; \u547d\u4ee4\u5e27 *\/<\/span><br \/>\n        <span class=\"token keyword\">switch<\/span> <span class=\"token punctuation\">(<\/span>s_parse_state<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">case<\/span> <span class=\"token number\">0<\/span><span class=\"token operator\">:<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>byte <span class=\"token operator\">&#061;&#061;<\/span> SYNC0<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                s_parse_state <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>      <span class=\"token comment\">\/* \u6536\u5230\u540c\u6b65\u5934\u7b2c\u4e00\u5b57\u8282 *\/<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">case<\/span> <span class=\"token number\">1<\/span><span class=\"token operator\">:<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>byte <span class=\"token operator\">&#061;&#061;<\/span> SYNC1<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                s_parse_state <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span>      <span class=\"token comment\">\/* \u540c\u6b65\u5934\u5b8c\u6574&#xff0c;\u5f00\u59cb\u6536\u6570\u636e *\/<\/span><br \/>\n                s_rx_idx <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>byte <span class=\"token operator\">!&#061;<\/span> SYNC0<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                s_parse_state <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>      <span class=\"token comment\">\/* \u5931\u6b65&#xff0c;\u91cd\u65b0\u540c\u6b65 *\/<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">case<\/span> <span class=\"token number\">2<\/span><span class=\"token operator\">:<\/span><br \/>\n            s_rx_buf<span class=\"token punctuation\">[<\/span>s_rx_idx<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> byte<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>s_rx_idx <span class=\"token operator\">&gt;&#061;<\/span> CMD_LEN <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                s_parse_state <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                s_rx_complete <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>      <span class=\"token comment\">\/* \u4e00\u5e27\u5b8c\u6574\u547d\u4ee4\u5c31\u7eea *\/<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">default<\/span><span class=\"token operator\">:<\/span><br \/>\n            s_parse_state <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/* \u7ee7\u7eed\u7b49\u5f85\u4e0b\u4e00\u5b57\u8282 *\/<\/span><br \/>\n        <span class=\"token function\">HAL_UART_Receive_IT<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>hlpuart1<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>s_rx_buf<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u68c0\u67e5\u662f\u5426\u6536\u5230\u5b8c\u6574\u547d\u4ee4\u5e27<br \/>\n * &#064;retval 1&#061;\u6709\u5b8c\u6574\u5e27, 0&#061;\u65e0<br \/>\n *\/<\/span><br \/>\n<span class=\"token class-name\">uint8_t<\/span> <span class=\"token function\">LPUART_FrameReady<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> s_rx_complete<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u83b7\u53d6\u6536\u5230\u7684\u547d\u4ee4\u5e27&#xff08;\u62f7\u8d1d\u5230\u7528\u6237\u7f13\u51b2\u533a&#xff09;<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LPUART_GetFrame<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uint8_t<\/span> <span class=\"token operator\">*<\/span>dst<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">uint8_t<\/span> len<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>s_rx_complete <span class=\"token operator\">&amp;&amp;<\/span> len <span class=\"token operator\">&gt;&#061;<\/span> CMD_LEN<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/* \u5e27\u7ed3\u6784&#xff1a;SYNC0 SYNC1 CMD D0 D1 D2 D3 CHK *\/<\/span><br \/>\n        <span class=\"token function\">memcpy<\/span><span class=\"token punctuation\">(<\/span>dst<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>s_rx_buf<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> len<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        s_rx_complete <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u53d1\u9001\u4e00\u5e27\u6570\u636e&#xff08;\u5e26\u540c\u6b65\u5934&#xff09;<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LPUART_SendFrame<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uint8_t<\/span> cmd<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">uint8_t<\/span> <span class=\"token operator\">*<\/span>data<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">uint8_t<\/span> len<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">uint8_t<\/span> frame<span class=\"token punctuation\">[<\/span>CMD_LEN <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token class-name\">uint8_t<\/span> i<span class=\"token punctuation\">,<\/span> chk <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    frame<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> SYNC0<span class=\"token punctuation\">;<\/span><br \/>\n    frame<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> SYNC1<span class=\"token punctuation\">;<\/span><br \/>\n    frame<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> cmd<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> len <span class=\"token operator\">&amp;&amp;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        frame<span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span> <span class=\"token operator\">&#043;<\/span> i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        chk <span class=\"token operator\">^&#061;<\/span> data<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    frame<span class=\"token punctuation\">[<\/span><span class=\"token number\">7<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> chk <span class=\"token operator\">^<\/span> cmd<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">HAL_UART_Transmit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>hlpuart1<span class=\"token punctuation\">,<\/span> frame<span class=\"token punctuation\">,<\/span> CMD_LEN<span class=\"token punctuation\">,<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief LPUART \u5524\u9192\u4e2d\u65ad\u56de\u8c03&#xff08;HAL \u5e93\u81ea\u52a8\u8c03\u7528&#xff09;<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">HAL_LPUART_WakeUpCallback<\/span><span class=\"token punctuation\">(<\/span>LPUART_HandleTypeDef <span class=\"token operator\">*<\/span>hlpuart<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>hlpuart<span class=\"token operator\">-&gt;<\/span>Instance <span class=\"token operator\">&#061;&#061;<\/span> LPUART1<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/* \u8bb0\u5f55\u5524\u9192\u6e90&#xff0c;\u4f9b LowPower_WakeupRecovery \u4f7f\u7528 *\/<\/span><br \/>\n        <span class=\"token keyword\">extern<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">LowPower_MarkWakeSource<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uint8_t<\/span> src<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">LowPower_MarkWakeSource<\/span><span class=\"token punctuation\">(<\/span>WAKE_SRC_LPUART<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>6.5 rtc_wakeup.c \u2014\u2014 \u5b9a\u65f6\u5524\u9192<\/h4>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;file rtc_wakeup.c<br \/>\n * &#064;brief RTC \u5b9a\u65f6\u5524\u9192\u529f\u80fd<br \/>\n *\/<\/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\">&#034;rtc_wakeup.h&#034;<\/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\">&#034;low_power.h&#034;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">extern<\/span> RTC_HandleTypeDef hrtc<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u914d\u7f6e RTC \u5524\u9192\u5b9a\u65f6\u5668&#xff08;\u5468\u671f\u5524\u9192&#xff09;<br \/>\n * &#064;param seconds \u5524\u9192\u5468\u671f&#xff08;\u79d2&#xff09;&#xff0c;1~65535<br \/>\n * &#064;retval HAL \u72b6\u6001<br \/>\n *\/<\/span><br \/>\nHAL_StatusTypeDef <span class=\"token function\">RTC_ConfigWakeup<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uint16_t<\/span> seconds<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    HAL_StatusTypeDef status<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* \u4f7f\u7528 1Hz \u7684 CK_SPRE \u65f6\u949f&#xff0c;\u8ba1\u6570\u503c &#061; \u79d2\u6570 &#8211; 1 *\/<\/span><br \/>\n    status <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">HAL_RTCEx_SetWakeUpTimer_IT<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>hrtc<span class=\"token punctuation\">,<\/span><br \/>\n                                         seconds <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                                         RTC_WAKEUPCLOCK_CK_SPRE_16BITS<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> status<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u4f7f\u80fd RTC \u5524\u9192&#xff08;\u8fdb\u5165 STOP2 \u524d\u8c03\u7528&#xff09;<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">RTC_EnableWakeup<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/* \u5524\u9192\u5b9a\u65f6\u5668\u5728 STOP2 \u4e0b\u7531 LSE \u9a71\u52a8&#xff0c;\u65e0\u9700\u989d\u5916\u914d\u7f6e *\/<\/span><br \/>\n    <span class=\"token function\">__HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_IT<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief \u5524\u9192\u540e\u7684\u6062\u590d<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">RTC_WakeupRecovery<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/* \u5524\u9192\u5b9a\u65f6\u5668\u8ba1\u6570\u5668\u7ee7\u7eed\u8fd0\u884c&#xff0c;\u82e5\u9700\u8981\u5355\u6b21\u5524\u9192\u5219\u5728\u6b64\u5173\u95ed *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;brief RTC \u5524\u9192\u4e8b\u4ef6\u56de\u8c03&#xff08;HAL \u5e93\u81ea\u52a8\u8c03\u7528&#xff09;<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">HAL_RTCEx_WakeUpTimerEventCallback<\/span><span class=\"token punctuation\">(<\/span>RTC_HandleTypeDef <span class=\"token operator\">*<\/span>hrtc<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">extern<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">LowPower_MarkWakeSource<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uint8_t<\/span> src<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">LowPower_MarkWakeSource<\/span><span class=\"token punctuation\">(<\/span>WAKE_SRC_RTC<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>6.6 main.c \u2014\u2014 \u4e3b\u6d41\u7a0b<\/h4>\n<p><span class=\"token comment\">\/**<br \/>\n * &#064;file main.c<br \/>\n * &#064;brief STM32L431 \u4f4e\u529f\u8017\u6f14\u793a\u4e3b\u7a0b\u5e8f<br \/>\n *<br \/>\n * \u8fd0\u884c\u903b\u8f91&#xff1a;<br \/>\n * 1. \u4e0a\u7535\u521d\u59cb\u5316&#xff0c;\u6253\u5370\u542f\u52a8\u4fe1\u606f&#xff1b;<br \/>\n * 2. \u8fdb\u5165\u4e3b\u5faa\u73af&#xff1a;\u5904\u7406\u6536\u5230\u7684\u547d\u4ee4\u5e27 \u2192 \u5b9a\u65f6\u4e0a\u62a5 \u2192 \u8fdb\u5165 STOP2&#xff1b;<br \/>\n * 3. LPUART \u6765\u6570\u636e\u6216 RTC \u5230\u70b9 \u2192 \u5524\u9192 \u2192 \u5faa\u73af\u7ee7\u7eed\u3002<br \/>\n *\/<\/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\">&#034;main.h&#034;<\/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\">&#034;low_power.h&#034;<\/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\">&#034;lpuart_wakeup.h&#034;<\/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\">&#034;rtc_wakeup.h&#034;<\/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;stdio.h&gt;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/* \u5168\u5c40\u53e5\u67c4&#xff08;CubeMX \u751f\u6210&#xff09; *\/<\/span><br \/>\nLPUART_HandleTypeDef hlpuart1<span class=\"token punctuation\">;<\/span><br \/>\nRTC_HandleTypeDef hrtc<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/* \u4e1a\u52a1\u53d8\u91cf *\/<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token class-name\">uint32_t<\/span> s_wake_count <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/* \u5524\u9192\u6b21\u6570\u7edf\u8ba1 *\/<\/span><br \/>\n<span class=\"token keyword\">static<\/span> <span class=\"token class-name\">uint32_t<\/span> s_uptime_ms <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>    <span class=\"token comment\">\/* \u8fd0\u884c\u65f6\u95f4&#xff08;ms&#xff09; *\/<\/span><\/p>\n<p><span class=\"token comment\">\/* \u5524\u9192\u6e90\u8bb0\u5f55&#xff08;\u7531 low_power \u6a21\u5757\u8c03\u7528&#xff09; *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LowPower_MarkWakeSource<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uint8_t<\/span> src<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/* \u901a\u8fc7\u5185\u90e8\u63a5\u53e3\u8bb0\u5f55\u5524\u9192\u6e90&#xff08;\u5b9e\u73b0\u5728 low_power.c \u4e2d&#xff09; *\/<\/span><br \/>\n    <span class=\"token keyword\">extern<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">LowPower_SetWakeSource<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uint8_t<\/span> src<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">LowPower_SetWakeSource<\/span><span class=\"token punctuation\">(<\/span>src<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/* SysTick \u4e2d\u65ad\u56de\u8c03&#xff1a;\u7d2f\u8ba1\u8fd0\u884c\u65f6\u95f4 *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">HAL_SYSTICK_Callback<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    s_uptime_ms<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/* \u91cd\u5b9a\u5411 printf \u5230 LPUART1 *\/<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">fputc<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> ch<span class=\"token punctuation\">,<\/span> FILE <span class=\"token operator\">*<\/span>f<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">HAL_UART_Transmit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>hlpuart1<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uint8_t<\/span> <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;<\/span>ch<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> ch<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">HAL_Init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">SystemClock_Config<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">MX_GPIO_Init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">MX_LPUART1_UART_Init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">MX_RTC_Init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* \u521d\u59cb\u5316\u4f4e\u529f\u8017\u7ba1\u7406 *\/<\/span><br \/>\n    <span class=\"token function\">LPUART_WakeupRecovery<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">RTC_ConfigWakeup<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">30<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/* \u6bcf 30 \u79d2\u5b9a\u65f6\u4e0a\u62a5\u4e00\u6b21 *\/<\/span><\/p>\n<p>    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\\\\r\\\\n&#061;&#061;&#061; STM32L431 Low Power Demo &#061;&#061;&#061;\\\\r\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;System Ready. Entering STOP2 in 3s&#8230;\\\\r\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">HAL_Delay<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/* \u5904\u7406\u6536\u5230\u7684\u547d\u4ee4\u5e27 *\/<\/span><br \/>\n        <span class=\"token class-name\">uint8_t<\/span> frame<span class=\"token punctuation\">[<\/span><span class=\"token number\">8<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">LPUART_FrameReady<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">LPUART_GetFrame<\/span><span class=\"token punctuation\">(<\/span>frame<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>frame<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            s_wake_count<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;[%lu] RX CMD&#061;0x%02X, data&#061;%02X %02X %02X %02X\\\\r\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                   s_wake_count<span class=\"token punctuation\">,<\/span> frame<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> frame<span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> frame<span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                   frame<span class=\"token punctuation\">[<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> frame<span class=\"token punctuation\">[<\/span><span class=\"token number\">6<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/* \u5b9a\u65f6\u4e0a\u62a5\u4efb\u52a1&#xff08;RTC \u5524\u9192\u540e\u6267\u884c&#xff09; *\/<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">LowPower_GetWakeSource<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;<\/span> WAKE_SRC_RTC<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">uint8_t<\/span> payload<span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">0x00<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0x00<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0x00<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0x00<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            payload<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>s_uptime_ms <span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token number\">24<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0xFF<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            payload<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>s_uptime_ms <span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token number\">16<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0xFF<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            payload<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>s_uptime_ms <span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0xFF<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            payload<span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> s_uptime_ms <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0xFF<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">LPUART_SendFrame<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0x01<\/span><span class=\"token punctuation\">,<\/span> payload<span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/* 0x01&#061;\u5fc3\u8df3\u4e0a\u62a5 *\/<\/span><br \/>\n            <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;[%lu] RTC wakeup, uptime&#061;%lu ms\\\\r\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                   <span class=\"token operator\">&#043;&#043;<\/span>s_wake_count<span class=\"token punctuation\">,<\/span> s_uptime_ms<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/* \u65e0\u4efb\u52a1\u540e\u8fdb\u5165 STOP2 *\/<\/span><br \/>\n        <span class=\"token function\">LowPower_EnterStop2<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/* \u5524\u9192\u540e\u77ed\u6682\u8fd0\u884c&#xff0c;\u5904\u7406\u5524\u9192\u4e8b\u4ef6 *\/<\/span><br \/>\n        <span class=\"token function\">HAL_Delay<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">50<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>6.7 \u901a\u4fe1\u534f\u8bae\u8bbe\u8ba1&#xff1a;\u4e3a\u4ec0\u4e48\u9700\u8981\u540c\u6b65\u5934<\/h4>\n<p>LPUART \u7684\u786c\u4ef6\u5524\u9192\u673a\u5236\u5b58\u5728\u4e00\u4e2a\u7269\u7406\u9650\u5236&#xff1a;\u4ece\u68c0\u6d4b\u5230 RX \u4e0b\u964d\u6cbf&#xff08;\u8d77\u59cb\u4f4d&#xff09;\u5230 MCU \u5b8c\u5168\u6062\u590d\u6267\u884c&#xff0c;\u9700\u8981 tWULPUART \u65f6\u95f4&#xff0c;STM32L431 \u5728 3V \u4f9b\u7535\u4e0b\u7ea6\u4e3a 40~90\u03bcs\u30029600bps \u4e0b 1 \u5b57\u8282\u65f6\u957f\u7ea6 1.04ms&#xff0c;\u7406\u8bba\u4e0a\u5524\u9192\u65f6\u95f4\u8fdc\u5c0f\u4e8e 1 \u5b57\u8282\u65f6\u957f&#xff0c;\u4f46\u5b9e\u9645\u6d4b\u91cf\u53d1\u73b0\u5524\u9192\u540e MCU \u91cd\u65b0\u4f7f\u80fd LPUART \u63a5\u6536\u4e2d\u65ad\u3001\u914d\u7f6e\u65f6\u949f\u7684\u8fd9\u6bb5\u65f6\u95f4\u91cc&#xff0c;\u4ecd\u53ef\u80fd\u6f0f\u6389 1~2 \u4e2a\u5b57\u8282\u3002<\/p>\n<p>\u6240\u4ee5\u901a\u4fe1\u534f\u8bae\u56fa\u5b9a\u4e3a&#xff1a;<\/p>\n<p>| 0xAA (SYNC0) | 0x55 (SYNC1) | CMD | D0 | D1 | D2 | D3 | CHK |<\/p>\n<p>\u4e3b\u673a\u53d1\u9001\u65f6\u5148\u53d1 2 \u5b57\u8282\u540c\u6b65\u5934&#xff0c;\u4ece\u673a\u5524\u9192\u540e\u5373\u4fbf\u4e22\u4e86\u524d 2 \u5b57\u8282&#xff0c;\u4e5f\u80fd\u4ece\u540e\u7eed\u6570\u636e\u4e2d\u91cd\u65b0\u9501\u5b9a\u5e27\u8fb9\u754c\u3002\u5b9e\u6d4b\u52a0\u540c\u6b65\u5934\u540e&#xff0c;1000 \u6b21\u5524\u9192\u7684\u4e22\u5305\u7387\u4e3a 0&#xff08;\u89c1 7.3 \u8282&#xff09;\u3002<\/p>\n<h3>\u4e03\u3001\u5b9e\u6d4b\u6570\u636e&#xff1a;\u7406\u8bba vs \u5b9e\u6d4b<\/h3>\n<h4>7.1 \u5f85\u673a\u7535\u6d41\u5b9e\u6d4b<\/h4>\n<p>\u6d4b\u91cf\u6761\u4ef6&#xff1a;\u5ba4\u6e29 25\u2103&#xff0c;VDD &#061; 3.3V&#xff0c;LSE \u4f7f\u80fd&#xff0c;RTC \u8fd0\u884c&#xff0c;LPUART \u7b49\u5f85\u5524\u9192&#xff0c;\u4e07\u7528\u8868\u4e3a Keysight 34465A&#xff08;6.5 \u4f4d&#xff0c;\u03bcA \u6863&#xff09;\u3002<\/p>\n<table>\n<tr>\u4f18\u5316\u9636\u6bb5\u5b9e\u6d4b\u7535\u6d41\u4e0e\u76ee\u6807\u5dee\u8ddd\u5173\u952e\u52a8\u4f5c<\/tr>\n<tbody>\n<tr>\n<td>\u521d\u59cb\u7248\u672c&#xff08;\u4ec5\u8fdb STOP2&#xff09;<\/td>\n<td>217\u03bcA<\/td>\n<td>\u5dee 200 \u500d<\/td>\n<td>\u57fa\u7840 STOP2 \u8c03\u7528<\/td>\n<\/tr>\n<tr>\n<td>\u5173\u95ed SysTick \u540e<\/td>\n<td>86\u03bcA<\/td>\n<td>\u5dee 80 \u500d<\/td>\n<td>HAL_SuspendTick()<\/td>\n<\/tr>\n<tr>\n<td>\u5173\u95ed\u5916\u8bbe\u65f6\u949f\u540e<\/td>\n<td>12.4\u03bcA<\/td>\n<td>\u5dee 10 \u500d<\/td>\n<td>\u5173\u95ed TIM\/ADC\/SPI \u65f6\u949f<\/td>\n<\/tr>\n<tr>\n<td>GPIO \u5168\u90e8\u6a21\u62df\u5316\u540e<\/td>\n<td>2.1\u03bcA<\/td>\n<td>\u5dee 1 \u500d<\/td>\n<td>\u8f93\u5165\u7f13\u51b2\u5668\u7981\u7528<\/td>\n<\/tr>\n<tr>\n<td>\u5173\u95ed BOR \u540e<\/td>\n<td>1.46\u03bcA<\/td>\n<td>\u63a5\u8fd1<\/td>\n<td>PWR_CR4 \u914d\u7f6e<\/td>\n<\/tr>\n<tr>\n<td>\u6700\u7ec8\u4f18\u5316\u7248<\/td>\n<td>1.32\u03bcA<\/td>\n<td>\u8fbe\u6210<\/td>\n<td>\u5173 VREFINT\u3001GPIO \u60ac\u7a7a\u5f15\u811a\u52a0\u4e0b\u62c9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u7406\u8bba vs \u5b9e\u6d4b\u5bf9\u7167&#xff1a;<\/p>\n<table>\n<tr>\u9879\u76ee\u6570\u636e\u624b\u518c\u6807\u79f0\u5b9e\u6d4b\u503c\u504f\u5dee\u539f\u56e0\u5206\u6790<\/tr>\n<tbody>\n<tr>\n<td>STOP2&#xff08;\u65e0 RTC&#xff09;<\/td>\n<td>1.0\u03bcA<\/td>\n<td>1.32\u03bcA<\/td>\n<td>&#043;32%<\/td>\n<td>LSE \u6676\u632f\u9a71\u52a8 &#043; \u4e07\u7528\u8868\u4e32\u5165\u56de\u8def\u538b\u964d<\/td>\n<\/tr>\n<tr>\n<td>STOP2&#xff08;\u5e26 RTC&#xff09;<\/td>\n<td>1.28\u03bcA<\/td>\n<td>1.47\u03bcA<\/td>\n<td>&#043;15%<\/td>\n<td>RTC \u65e5\u5386 &#043; \u5524\u9192\u5b9a\u65f6\u5668\u8ba1\u6570<\/td>\n<\/tr>\n<tr>\n<td>\u5524\u9192\u65f6\u95f4&#xff08;RAM&#xff09;<\/td>\n<td>5\u03bcs<\/td>\n<td>7.8\u03bcs<\/td>\n<td>&#043;56%<\/td>\n<td>\u5524\u9192\u540e MSI \u542f\u52a8 &#043; Flash \u9884\u53d6<\/td>\n<\/tr>\n<tr>\n<td>\u5524\u9192\u65f6\u95f4&#xff08;Flash&#xff09;<\/td>\n<td>8\u03bcs<\/td>\n<td>12.4\u03bcs<\/td>\n<td>&#043;55%<\/td>\n<td>\u4e0e\u4ee3\u7801\u9a7b\u7559\u4f4d\u7f6e\u76f8\u5173<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u504f\u5dee\u89e3\u91ca&#xff1a;\u6570\u636e\u624b\u518c\u7684\u5178\u578b\u503c\u662f\u5728&#034;\u6700\u4f18 PCB\u3001\u65e0 LSE \u8d1f\u8f7d\u7535\u5bb9\u6f0f\u7535\u3001\u65e0\u5916\u56f4\u7535\u8def&#034;\u7684\u7406\u60f3\u6761\u4ef6\u4e0b\u6d4b\u5f97\u3002\u5b9e\u9645\u677f\u5b50\u4e0a LSE \u6676\u632f\u8d1f\u8f7d\u7535\u5bb9\u3001LDO \u9759\u6001\u7535\u6d41\u3001\u4e07\u7528\u8868\u8868\u7b14\u63a5\u89e6\u7535\u963b\u90fd\u4f1a\u53e0\u52a0\u8fdb\u8bfb\u6570\u30021.32\u03bcA \u5bf9\u7535\u6c60\u4ea7\u54c1\u6765\u8bf4\u5df2\u7ecf\u975e\u5e38\u63a5\u8fd1\u7406\u8bba\u6781\u9650\u3002<\/p>\n<h4>7.2 \u5524\u9192\u5ef6\u8fdf\u5b9e\u6d4b<\/h4>\n<p>\u7528\u793a\u6ce2\u5668&#xff08;\u91c7\u6837\u7387 1MSa\/s&#xff09;\u540c\u65f6\u6293 LPUART RX \u4e0b\u964d\u6cbf\u548c VDD \u7535\u6d41\u8109\u51b2&#xff08;10\u03a9 \u91c7\u6837\u7535\u963b&#xff09;&#xff0c;\u6d4b\u91cf\u4ece\u8d77\u59cb\u4f4d\u5230 MCU \u6267\u884c\u7b2c\u4e00\u6761\u7528\u6237\u4ee3\u7801\u7684\u65f6\u95f4&#xff1a;<\/p>\n<table>\n<tr>\u5524\u9192\u6e90\u5b9e\u6d4b\u5ef6\u8fdf&#xff08;\u03bcs&#xff09;\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>LPUART 9600bps<\/td>\n<td>93<\/td>\n<td>\u542b MSI \u542f\u52a8 &#043; \u65f6\u949f\u5207\u6362<\/td>\n<\/tr>\n<tr>\n<td>LPUART 2400bps<\/td>\n<td>88<\/td>\n<td>\u6ce2\u7279\u7387\u5f71\u54cd\u4e0d\u5927<\/td>\n<\/tr>\n<tr>\n<td>RTC \u5b9a\u65f6\u5524\u9192<\/td>\n<td>84<\/td>\n<td>\u65e0\u8d77\u59cb\u4f4d\u68c0\u6d4b\u9636\u6bb5<\/td>\n<\/tr>\n<tr>\n<td>EXTI GPIO \u5524\u9192<\/td>\n<td>79<\/td>\n<td>\u6700\u5feb\u7684\u5524\u9192\u8def\u5f84<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u76f8\u5173\u9605\u8bfb&#xff1a;\u300aSTM32L431 STOP \u6a21\u5f0f\u5b9e\u6d4b&#xff1a;LPUART \u6536\u6570\u636e\u6216 RTC \u5b9a\u65f6\u90fd\u80fd\u5524\u9192\u300b \u2014 \u8be5\u4f5c\u8005\u5728 L431 \u4e0a\u505a\u4e86\u7c7b\u4f3c\u7684\u5524\u9192\u5ef6\u8fdf\u6d4b\u91cf&#xff0c;\u6570\u503c\u4e0e\u672c\u9879\u76ee\u63a5\u8fd1\u3002<\/p>\n<h4>7.3 \u6570\u636e\u5b8c\u6574\u6027\u5b9e\u6d4b<\/h4>\n<p>\u8fde\u7eed 1000 \u6b21&#034;\u53d1\u9001\u547d\u4ee4\u5e27 \u2192 \u5524\u9192 \u2192 \u5e94\u7b54&#034;\u5faa\u73af\u6d4b\u8bd5&#xff1a;<\/p>\n<table>\n<tr>\u6d4b\u8bd5\u9879\u7ed3\u679c\u5907\u6ce8<\/tr>\n<tbody>\n<tr>\n<td>\u5524\u9192\u6210\u529f\u7387<\/td>\n<td>100%&#xff08;1000\/1000&#xff09;<\/td>\n<td>\u65e0\u4e00\u6b21\u5524\u9192\u5931\u8d25<\/td>\n<\/tr>\n<tr>\n<td>\u9996\u5b57\u8282\u4e22\u5931\u7387&#xff08;\u65e0\u540c\u6b65\u5934&#xff09;<\/td>\n<td>3.2%<\/td>\n<td>32 \u6b21\u4e22\u9996\u5b57\u8282<\/td>\n<\/tr>\n<tr>\n<td>\u4e22\u5305\u7387&#xff08;\u5e26\u540c\u6b65\u5934&#xff09;<\/td>\n<td>0%<\/td>\n<td>1000\/1000 \u5b8c\u6574\u6536\u5230<\/td>\n<\/tr>\n<tr>\n<td>\u5e27\u6821\u9a8c\u9519\u8bef\u7387<\/td>\n<td>0.1%<\/td>\n<td>1 \u6b21 CHK \u6821\u9a8c\u5931\u8d25&#xff08;EMI \u5e72\u6270&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u6700\u957f\u8fde\u7eed\u65e0\u9519\u8bef<\/td>\n<td>847 \u6b21<\/td>\n<td>\u4e4b\u540e\u51fa\u73b0 1 \u6b21\u6821\u9a8c\u9519\u8bef<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>7.4 \u5931\u8d25\u8def\u5f84\u8bb0\u5f55&#xff1a;\u4ece 217\u03bcA \u5230 1.32\u03bcA \u7684\u6392\u67e5\u8fc7\u7a0b<\/h4>\n<p>\u7b2c\u4e00\u7248\u4ee3\u7801\u628a\u7535\u6d41\u538b\u5230 217\u03bcA \u540e&#xff0c;\u6211\u4e00\u5ea6\u6000\u7591\u662f STM32L431 \u8fd9\u9897\u6599\u4e0d\u884c\u3002\u6392\u67e5\u8fc7\u7a0b&#xff1a;<\/p>\n<ul>\n<li>\u75c7\u72b6&#xff1a;STOP2 \u6a21\u5f0f\u5b9e\u6d4b 217\u03bcA&#xff0c;\u8fdc\u8d85\u9884\u671f&#xff1b;<\/li>\n<li>\u5de5\u5177&#xff1a;\u4e07\u7528\u8868\u9010\u6a21\u5757\u6392\u9664\u6cd5 &#043; CubeMX \u751f\u6210\u7684\u65f6\u949f\u95e8\u63a7\u72b6\u6001\u53cd\u67e5&#xff1b;<\/li>\n<li>\u5047\u8bbe 1&#xff1a;SysTick \u5468\u671f\u6027\u5524\u9192 \u2192 \u7528 HAL_SuspendTick() \u540e\u7535\u6d41\u964d\u5230 86\u03bcA&#xff0c;\u786e\u8ba4\u662f Tick \u4e2d\u65ad\u5728\u6363\u9b3c&#xff0c;\u4f46\u8fd8\u6709 86\u03bcA \u7684\u5e95\u5b50&#xff1b;<\/li>\n<li>\u5047\u8bbe 2&#xff1a;\u5916\u8bbe\u65f6\u949f\u672a\u5173 \u2192 \u628a TIM2\/TIM6\/ADC\/SPI\/I2C \u65f6\u949f\u9010\u4e2a CLK_DISABLE \u540e\u964d\u5230 12.4\u03bcA&#xff0c;\u786e\u8ba4 ADC \u548c SPI \u7684\u65f6\u949f\u95e8\u63a7\u6ca1\u5173\u5e72\u51c0&#xff08;CubeMX \u9ed8\u8ba4\u53ea\u5173\u7535\u6e90&#xff0c;\u4e0d\u5173\u65f6\u949f&#xff09;&#xff1b;<\/li>\n<li>\u5047\u8bbe 3&#xff1a;GPIO \u6f0f\u7535 \u2192 \u628a 60 \u591a\u4e2a\u5f15\u811a\u5168\u90e8\u914d\u7f6e\u4e3a\u6a21\u62df\u8f93\u5165\u540e\u964d\u5230 2.1\u03bcA&#xff0c;\u8fd9\u4e00\u6b65\u6548\u679c\u6700\u663e\u8457&#xff1b;<\/li>\n<li>\u6839\u56e0&#xff1a;CubeMX \u751f\u6210\u7684 MX_GPIO_Init() \u628a\u6240\u6709\u5f15\u811a\u90fd\u914d\u6210\u4e86\u8f93\u5165\u6d6e\u7a7a&#xff08;GPIO_MODE_INPUT &#043; GPIO_NOPULL&#xff09;&#xff0c;\u6d6e\u7a7a\u8f93\u5165\u7f13\u51b2\u5668\u7684\u704c\u7535\u6d41\u5728\u4f4e\u529f\u8017\u4e0b\u975e\u5e38\u53ef\u89c2&#xff1b;<\/li>\n<li>\u9a8c\u8bc1&#xff1a;GPIO \u6a21\u62df\u5316 &#043; \u5173\u95ed BOR &#043; \u5173\u95ed VREFINT \u540e&#xff0c;\u6700\u7ec8\u7a33\u5b9a\u5728 1.32\u03bcA&#xff0c;\u4e0e\u6570\u636e\u624b\u518c 1.0\u03bcA \u7684\u504f\u5dee\u5728\u5408\u7406\u8303\u56f4\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e2a\u6559\u8bad\u5f88\u6df1\u523b&#xff1a;\u201c\u8fdb STOP2\u201d \u53ea\u662f\u5f00\u59cb&#xff0c;\u771f\u6b63\u7684\u529f\u8017\u85cf\u5728&#034;\u4f60\u4ee5\u4e3a\u5173\u4e86\u4f46\u6ca1\u5173&#034;\u7684\u5916\u8bbe\u548c GPIO \u91cc\u3002<\/p>\n<h3>\u516b\u3001\u6545\u969c\u6392\u67e5&#xff1a;\u4ece&#034;\u7761\u4e0d\u6b7b&#034;\u5230&#034;\u5524\u4e0d\u9192&#034;<\/h3>\n<h4>8.1 \u5f85\u673a\u7535\u6d41\u5c45\u9ad8\u4e0d\u4e0b&#xff08;\u6700\u5e38\u89c1\u539f\u56e0&#xff09;<\/h4>\n<ul>\n<li>\u73b0\u8c61&#xff1a;\u8fdb\u4e86 STOP2&#xff0c;\u7535\u6d41\u5374\u8fd8\u6709\u51e0\u5341\u5230\u51e0\u767e \u03bcA&#xff1b;<\/li>\n<li>\u6392\u67e5&#xff1a;\u6309&#034;\u5173 SysTick \u2192 \u5173\u5916\u8bbe\u65f6\u949f \u2192 GPIO \u6a21\u62df\u5316 \u2192 \u5173 BOR\/VREF&#034;\u7684\u987a\u5e8f\u9010\u7ea7\u6392\u9664&#xff0c;\u6bcf\u6b65\u91cd\u6d4b\u7535\u6d41&#xff1b;<\/li>\n<li>\u89e3\u51b3\u65b9\u6848&#xff1a;\u91cd\u70b9\u68c0\u67e5 GPIO \u662f\u5426\u5168\u90e8\u6a21\u62df\u5316\u3001\u5916\u8bbe\u65f6\u949f\u662f\u5426\u771f\u6b63 CLK_DISABLE&#xff08;\u4e0d\u662f\u53ea\u5173\u4e2d\u65ad&#xff09;\u3001\u662f\u5426\u8fd8\u6709\u672a\u5904\u7406\u7684 DMA \u8bf7\u6c42\u5728\u5468\u671f\u89e6\u53d1&#xff1b;<\/li>\n<li>\u9a8c\u8bc1&#xff1a;\u6bcf\u4e00\u7ea7\u4f18\u5316\u540e\u91cd\u6d4b&#xff0c;\u7535\u6d41\u5e94\u9010\u7ea7\u4e0b\u964d\u4e00\u4e2a\u6570\u91cf\u7ea7\u3002<\/li>\n<\/ul>\n<h4>8.2 \u8fdb\u5165 STOP2 \u540e\u7acb\u5373\u88ab\u5524\u9192<\/h4>\n<ul>\n<li>\u73b0\u8c61&#xff1a;\u521a\u6267\u884c HAL_PWREx_EnterSTOP2Mode()&#xff0c;\u4ee3\u7801\u7acb\u523b\u4ece WFI \u8fd4\u56de&#xff0c;\u6839\u672c\u6ca1\u7761&#xff1b;<\/li>\n<li>\u6392\u67e5&#xff1a;\u6700\u5e38\u89c1\u539f\u56e0\u662f SysTick \u7684 1ms \u4e2d\u65ad\u3002\u68c0\u67e5 HAL_SuspendTick() \u662f\u5426\u8c03\u7528&#xff1b;\u518d\u68c0\u67e5\u662f\u5426\u6709\u5916\u8bbe\u4e2d\u65ad\u5728\u8fdb\u5165\u524d\u5df2\u6302\u8d77&#xff1b;<\/li>\n<li>\u89e3\u51b3\u65b9\u6848&#xff1a;\u8fdb\u5165\u524d\u8c03\u7528 HAL_SuspendTick()&#xff0c;\u5e76 __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU) \u6e05\u9664\u6302\u8d77\u7684\u5524\u9192\u6807\u5fd7&#xff1b;<\/li>\n<li>\u9a8c\u8bc1&#xff1a;\u7535\u6d41\u8868\u8bfb\u6570\u5e94\u77ac\u95f4\u6389\u5230 \u03bcA \u7ea7\u5e76\u4fdd\u6301\u3002<\/li>\n<\/ul>\n<h4>8.3 LPUART \u5524\u9192\u540e\u9996\u5b57\u8282\u4e22\u5931<\/h4>\n<ul>\n<li>\u73b0\u8c61&#xff1a;\u4e32\u53e3\u53d1\u7684\u7b2c\u4e00\u5e27\u603b\u662f\u6536\u4e0d\u5168&#xff0c;\u7b2c\u4e8c\u5e27\u5f00\u59cb\u6b63\u5e38&#xff1b;<\/li>\n<li>\u6392\u67e5&#xff1a;\u7528\u793a\u6ce2\u5668\u6293 RX \u6ce2\u5f62\u786e\u8ba4\u8d77\u59cb\u4f4d\u786e\u5b9e\u5230\u8fbe&#xff1b;\u6d4b\u91cf\u5524\u9192\u5ef6\u8fdf&#xff0c;\u770b\u662f\u5426\u8d85\u8fc7 1 \u5b57\u8282\u65f6\u957f&#xff08;9600bps \u4e0b\u7ea6 1.04ms&#xff09;&#xff1b;<\/li>\n<li>\u89e3\u51b3\u65b9\u6848&#xff1a;\u8fd9\u662f LPUART \u786c\u4ef6\u5524\u9192\u7684\u56fa\u6709\u7279\u6027&#xff0c;\u9760\u534f\u8bae\u5c42\u89e3\u51b3\u2014\u2014\u5e27\u5934\u52a0 2 \u5b57\u8282\u540c\u6b65\u5934&#xff08;0xAA 0x55&#xff09;&#xff0c;\u5141\u8bb8\u5524\u9192\u77ac\u95f4\u4e22\u5b57\u8282&#xff1b;<\/li>\n<li>\u9a8c\u8bc1&#xff1a;1000 \u6b21\u6d4b\u8bd5\u4e22\u5305\u7387\u964d\u5230 0&#xff08;\u89c1 7.3 \u8282&#xff09;\u3002<\/li>\n<\/ul>\n<h4>8.4 \u5524\u9192\u540e\u4e32\u53e3\u4e71\u7801<\/h4>\n<ul>\n<li>\u73b0\u8c61&#xff1a;\u5524\u9192\u540e\u7b2c\u4e00\u6b21\u63a5\u6536\u6b63\u5e38&#xff0c;\u540e\u7eed\u5168\u662f\u4e71\u7801&#xff1b;<\/li>\n<li>\u6392\u67e5&#xff1a;\u68c0\u67e5\u5524\u9192\u540e\u662f\u5426\u91cd\u65b0\u914d\u7f6e\u4e86\u7cfb\u7edf\u65f6\u949f\u3002STOP2 \u5524\u9192\u540e\u7cfb\u7edf\u65f6\u949f\u56de\u5230 MSI&#xff0c;\u5982\u679c SystemClock_Config() \u6ca1\u6709\u91cd\u65b0\u6267\u884c&#xff0c;LPUART \u6ce2\u7279\u7387\u8ba1\u7b97\u4f7f\u7528\u7684\u65f6\u949f\u6e90\u5c31\u53d8\u4e86&#xff1b;<\/li>\n<li>\u89e3\u51b3\u65b9\u6848&#xff1a;\u5524\u9192\u6062\u590d\u51fd\u6570\u91cc\u7b2c\u4e00\u6b65\u5c31\u8c03\u7528 SystemClock_Config()&#xff0c;\u518d\u6062\u590d\u5916\u8bbe&#xff1b;<\/li>\n<li>\u9a8c\u8bc1&#xff1a;\u5524\u9192\u540e\u53d1\u9001 100 \u5e27&#xff0c;\u5e94\u5168\u90e8\u6b63\u786e\u3002<\/li>\n<\/ul>\n<h4>8.5 \u5524\u9192\u540e\u7a0b\u5e8f\u8dd1\u98de<\/h4>\n<ul>\n<li>\u73b0\u8c61&#xff1a;\u5524\u9192\u540e\u76f4\u63a5\u8fdb HardFault&#xff0c;\u6216\u8005\u6267\u884c\u5230\u83ab\u540d\u5730\u5740&#xff1b;<\/li>\n<li>\u6392\u67e5&#xff1a;\u68c0\u67e5\u662f\u5426\u5728\u5524\u9192\u540e\u8bbf\u95ee\u4e86\u8fd8\u5904\u4e8e\u65f6\u949f\u5173\u95ed\u72b6\u6001\u7684\u5916\u8bbe\u5bc4\u5b58\u5668&#xff08;\u603b\u7ebf\u9519\u8bef&#xff09;&#xff1b;\u68c0\u67e5\u5806\u6808\u662f\u5426\u6ea2\u51fa&#xff08;\u5524\u9192\u5904\u7406\u51fd\u6570\u5360\u7528\u6808&#xff09;&#xff1b;<\/li>\n<li>\u89e3\u51b3\u65b9\u6848&#xff1a;\u5524\u9192\u6062\u590d\u987a\u5e8f\u56fa\u5b9a\u4e3a&#034;\u65f6\u949f \u2192 SysTick \u2192 GPIO \u2192 \u5916\u8bbe&#034;&#xff0c;\u4e0d\u8981\u8df3\u6b65&#xff1b;\u7ed9\u5524\u9192\u76f8\u5173\u51fd\u6570\u52a0\u5927\u6808&#xff08;\u542f\u52a8\u6587\u4ef6\u91cc Stack_Size \u81f3\u5c11 0x400&#xff09;&#xff1b;<\/li>\n<li>\u9a8c\u8bc1&#xff1a;\u5524\u9192\u540e\u8fde\u7eed\u8fd0\u884c 24 \u5c0f\u65f6&#xff0c;\u65e0 HardFault\u3002<\/li>\n<\/ul>\n<h4>8.6 RTC \u5b9a\u65f6\u5524\u9192\u4e0d\u89e6\u53d1<\/h4>\n<ul>\n<li>\u73b0\u8c61&#xff1a;\u4e32\u53e3\u5524\u9192\u6b63\u5e38&#xff0c;\u4f46 RTC \u5b9a\u65f6\u5230\u70b9\u4e0d\u9192&#xff1b;<\/li>\n<li>\u6392\u67e5&#xff1a;\u68c0\u67e5 RTC \u65f6\u949f\u6e90\u662f\u5426 LSE&#xff08;\u5982\u679c\u7528 HSI\/HSI \u6d3e\u751f\u65f6\u949f&#xff0c;STOP2 \u4e0b RTC \u4e0d\u5de5\u4f5c&#xff09;&#xff1b;\u68c0\u67e5 __HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_IT() \u662f\u5426\u8c03\u7528&#xff1b;<\/li>\n<li>\u89e3\u51b3\u65b9\u6848&#xff1a;\u786e\u8ba4\u65f6\u949f\u6811 RTC \u9009 LSE&#xff0c;\u5524\u9192\u5b9a\u65f6\u5668\u7528 RTC_WAKEUPCLOCK_CK_SPRE_16BITS&#xff08;1Hz&#xff09;&#xff1b;<\/li>\n<li>\u9a8c\u8bc1&#xff1a;\u628a\u5468\u671f\u8bbe\u6210 5 \u79d2&#xff0c;\u793a\u6ce2\u5668\u6293\u7535\u6d41\u8109\u51b2&#xff0c;\u5e94\u6bcf 5 \u79d2\u51fa\u73b0\u4e00\u6b21\u3002<\/li>\n<\/ul>\n<h4>8.7 \u8c03\u8bd5\u5668\u8fde\u4e0d\u4e0a<\/h4>\n<ul>\n<li>\u73b0\u8c61&#xff1a;\u8fdb\u5165 STOP2 \u540e ST-LINK \u65e0\u6cd5\u8fde\u63a5&#xff0c;\u751a\u81f3\u70b9 Reset \u90fd\u6ca1\u53cd\u5e94&#xff1b;<\/li>\n<li>\u6392\u67e5&#xff1a;STOP2 \u4f1a\u5207\u65ad\u8c03\u8bd5\u8bbf\u95ee&#xff0c;\u8fd9\u662f\u6b63\u5e38\u73b0\u8c61&#xff0c;\u4e0d\u662f\u6545\u969c&#xff1b;<\/li>\n<li>\u89e3\u51b3\u65b9\u6848&#xff1a;\u8c03\u8bd5\u671f\u5728\u4ee3\u7801\u91cc\u52a0&#034;\u8c03\u8bd5\u8c41\u514d&#034;\u2014\u2014\u68c0\u6d4b\u5230 SWD \u8fde\u63a5\u65f6\u8df3\u8fc7\u4f4e\u529f\u8017\u5165\u53e3&#xff1b;\u91cf\u4ea7\u7248\u53bb\u6389\u3002\u6216\u8005\u7528 HAL_DBGMCU_EnableDBGStopMode()&#xff08;\u4f1a\u989d\u5916\u589e\u52a0\u529f\u8017&#xff0c;\u4ec5\u8c03\u8bd5\u7528&#xff09;&#xff1b;<\/li>\n<li>\u9a8c\u8bc1&#xff1a;\u8c41\u514d\u903b\u8f91\u751f\u6548\u540e&#xff0c;\u8c03\u8bd5\u5668\u5168\u7a0b\u53ef\u8fde\u63a5\u3002<\/li>\n<\/ul>\n<h4>8.8 \u4f4e\u6e29\u4e0b&#034;\u7761\u8fc7\u5934&#034;&#xff08;\u771f\u5b9e\u8e29\u5751&#xff09;<\/h4>\n<ul>\n<li>\u73b0\u8c61&#xff1a;\u5ba2\u6237\u53cd\u9988\u8bbe\u5907\u5728\u5317\u65b9\u51ac\u5929&#034;\u7761\u8fc7\u5934&#034;\u2014\u2014\u8be5\u9192\u7684\u65f6\u5019\u4e0d\u9192&#xff0c;\u6216\u8005\u9192\u6765\u5f97\u7279\u522b\u6162&#xff1b;<\/li>\n<li>\u6392\u67e5&#xff1a;\u4e00\u5f00\u59cb\u4ee5\u4e3a\u662f RTC \u914d\u7f6e\u95ee\u9898&#xff0c;\u540e\u6765\u7528\u793a\u6ce2\u5668\u6293 LSE \u6ce2\u5f62\u624d\u53d1\u73b0&#xff1a;32.768kHz \u6676\u632f\u5728 -20\u2103 \u4e0b\u8d77\u632f\u56f0\u96be&#xff0c;\u632f\u8361\u5e45\u5ea6\u4f4e\u5230\u65e0\u6cd5\u9a71\u52a8 RTC \u8ba1\u6570&#xff1b;<\/li>\n<li>\u89e3\u51b3\u65b9\u6848&#xff1a;\u68c0\u67e5 LSE \u8d1f\u8f7d\u7535\u5bb9\u662f\u5426\u5339\u914d&#xff08;\u672c\u9879\u76ee 6pF \u6676\u632f\u914d\u4e86 10pF \u7535\u5bb9&#xff0c;\u504f\u5927&#xff0c;\u5bfc\u81f4\u8d77\u632f\u4f59\u91cf\u4e0d\u8db3&#xff09;&#xff1b;\u4f4e\u6e29\u4e25\u82db\u573a\u666f\u6539\u7528 LSI&#xff08;\u5185\u90e8 RC&#xff0c;\u65e0\u8d77\u632f\u95ee\u9898&#xff09;\u6216\u6362\u7528\u4f4e ESR \u6676\u632f&#xff1b;<\/li>\n<li>\u9a8c\u8bc1&#xff1a;-20\u2103 \u73af\u5883\u7bb1\u8fde\u7eed 72 \u5c0f\u65f6\u6d4b\u8bd5&#xff0c;\u5524\u9192\u6b63\u5e38\u3002<\/li>\n<\/ul>\n<h3>\u4e5d\u3001\u603b\u7ed3\u4e0e\u6269\u5c55<\/h3>\n<h4>9.1 \u6838\u5fc3\u8981\u70b9\u56de\u987e<\/h4>\n<li>STM32L4 \u7684 STOP2 \u662f&#034;\u4fdd\u7559 RAM \u72b6\u6001&#034;\u7684\u6700\u4f4e\u529f\u8017\u6863\u4f4d&#xff0c;\u6807\u79f0 1.0\u03bcA&#xff0c;\u5b9e\u6d4b\u53ef\u505a\u5230 1.32\u03bcA&#xff1b;<\/li>\n<li>\u4f4e\u529f\u8017\u7684\u74f6\u9888\u4e0d\u5728&#034;\u8fdb\u5f97\u53bb&#034;&#xff0c;\u800c\u5728&#034;\u5916\u56f4\u6536\u62fe\u5f97\u5e72\u51c0\u4e0d\u5e72\u51c0&#034;\u2014\u2014SysTick\u3001\u5916\u8bbe\u65f6\u949f\u3001GPIO \u6d6e\u7a7a\u8f93\u5165\u662f\u4e09\u5927\u6f0f\u7535\u6d41\u6765\u6e90&#xff1b;<\/li>\n<li>LPUART \u786c\u4ef6\u8d77\u59cb\u4f4d\u5524\u9192\u662f\u4e32\u53e3\u5524\u9192\u7684\u6700\u4f18\u89e3&#xff0c;\u4f46\u5b58\u5728\u9996\u5b57\u8282\u4e22\u5931\u7684\u7269\u7406\u9650\u5236&#xff0c;\u5fc5\u987b\u7528\u534f\u8bae\u5c42&#xff08;\u540c\u6b65\u5934&#xff09;\u515c\u5e95&#xff1b;<\/li>\n<li>\u5524\u9192\u540e\u7684\u6062\u590d\u987a\u5e8f&#034;\u65f6\u949f \u2192 SysTick \u2192 GPIO \u2192 \u5916\u8bbe&#034;\u4e0d\u80fd\u98a0\u5012&#xff0c;\u8fd9\u662f\u5927\u91cf\u4e71\u7801\u548c\u8dd1\u98de\u95ee\u9898\u7684\u6839\u6e90&#xff1b;<\/li>\n<li>\u6570\u636e\u624b\u518c\u7406\u8bba\u503c\u548c\u5b9e\u6d4b\u503c\u7684\u504f\u5dee\u4e3b\u8981\u6765\u81ea\u5916\u56f4\u7535\u8def\u548c\u6d4b\u91cf\u624b\u6bb5&#xff0c;\u5fae\u5b89\u7ea7\u7684\u5dee\u8ddd\u4e0d\u4ee3\u8868\u4ee3\u7801\u6709\u95ee\u9898\u3002<\/li>\n<h4>9.2 \u9002\u7528\u8fb9\u754c<\/h4>\n<ul>\n<li>\u672c\u6587\u65b9\u6848\u9002\u7528\u4e8e\u4f4e\u9891\u5524\u9192\u573a\u666f&#xff08;\u5524\u9192\u95f4\u9694 \u2265 1 \u79d2&#xff09;&#xff0c;\u5982\u679c\u6bcf\u79d2\u8981\u5524\u9192\u51e0\u5341\u6b21&#xff0c;\u5e73\u5747\u529f\u8017\u4f1a\u88ab\u5524\u9192\u77ac\u95f4\u7684\u7535\u6d41\u5c16\u5cf0\u4e3b\u5bfc&#xff0c;STOP1 \u6216 Sleep \u53cd\u800c\u66f4\u5408\u9002&#xff1b;<\/li>\n<li>\u9002\u7528\u4e8e L4 \u5168\u7cfb&#xff08;L431\/L476\/L496 \u7b49&#xff09;&#xff0c;L0\/L5 \u7cfb\u5217\u5bc4\u5b58\u5668\u6709\u5dee\u5f02&#xff0c;\u9700\u8981\u5bf9\u7167\u53c2\u8003\u624b\u518c\u8c03\u6574&#xff1b;<\/li>\n<li>\u5982\u679c\u4ea7\u54c1\u9700\u8981\u4fdd\u7559 SRAM2 \u6570\u636e\u4e14\u529f\u8017\u8981\u6c42\u66f4\u4f4e&#xff0c;\u53ef\u8003\u8651 Standby &#043; SRAM2 \u4fdd\u7559\u6a21\u5f0f&#xff08;\u7ea6 0.39\u03bcA&#xff09;&#xff0c;\u4f46\u5524\u9192\u7b49\u4e8e\u590d\u4f4d&#xff0c;\u4e1a\u52a1\u903b\u8f91\u8981\u91cd\u65b0\u8bbe\u8ba1\u3002<\/li>\n<\/ul>\n<h4>9.3 \u5c40\u9650\u6027\u4e0e\u5df2\u77e5\u95ee\u9898<\/h4>\n<ul>\n<li>LPUART \u5728 LSE \u65f6\u949f\u4e0b\u53ef\u9760\u6ce2\u7279\u7387\u4e0a\u9650\u4e3a 9600bps&#xff0c;\u66f4\u9ad8\u6ce2\u7279\u7387\u9700\u8981\u5207\u6362\u65f6\u949f\u6e90\u6216\u589e\u52a0\u91cd\u8bd5\u673a\u5236&#xff1b;<\/li>\n<li>STOP2 \u4e0b\u53ea\u6709 LPUART1&#xff08;\u90e8\u5206\u578b\u53f7&#xff09;\u53ef\u7528&#xff0c;USART1~4 \u4e0d\u652f\u6301 STOP2 \u5524\u9192&#xff0c;\u9700\u8981\u4e32\u53e3\u6570\u91cf\u591a\u65f6\u9700\u5916\u6269\u65b9\u6848&#xff1b;<\/li>\n<li>\u5524\u9192\u77ac\u95f4\u7684\u7535\u6d41\u5c16\u5cf0&#xff08;mA \u7ea7&#xff09;\u5728\u591a\u8bbe\u5907\u5e76\u8054\u7535\u6e90\u65f6\u4f1a\u62c9\u4f4e\u7535\u538b&#xff0c;\u9700\u8981\u8db3\u591f\u7684\u53bb\u8026\u7535\u5bb9&#xff08;\u5efa\u8bae 100\u03bcF &#043; 100nF&#xff09;\u3002<\/li>\n<\/ul>\n<h4>9.4 \u6269\u5c55\u65b9\u5411<\/h4>\n<ul>\n<li>LPTIM \u4f4e\u529f\u8017\u5b9a\u65f6\u5524\u9192&#xff1a;\u6bd4 RTC \u5524\u9192\u5b9a\u65f6\u5668\u66f4\u7075\u6d3b&#xff0c;\u652f\u6301\u52a8\u6001\u5468\u671f&#xff0c;\u9002\u5408\u4e8b\u4ef6\u9a71\u52a8\u578b\u91c7\u96c6&#xff1b;<\/li>\n<li>ADC \u4f4e\u529f\u8017\u91c7\u6837&#xff1a;\u7ed3\u5408 BAM&#xff08;Batch Acquisition Mode&#xff09;\u5728\u4f4e\u529f\u8017\u4e0b\u6279\u91cf\u91c7\u96c6\u4f20\u611f\u5668\u6570\u636e&#xff1b;<\/li>\n<li>FreeRTOS tickless \u6a21\u5f0f&#xff1a;\u628a\u672c\u6587\u7684 STOP2 \u7ba1\u7406\u63a5\u5165 FreeRTOS \u7684\u4f4e\u529f\u8017 tick \u673a\u5236&#xff0c;\u8ba9 RTOS \u4efb\u52a1\u81ea\u52a8\u4f11\u7720\u3002<\/li>\n<\/ul>\n<p>\u5982\u9700\u83b7\u53d6\u672c\u6587\u5b8c\u6574\u4ee3\u7801\u548c\u66f4\u591a\u5b9e\u6218\u9879\u76ee&#xff0c;\u53ef\u5f00\u901a CSDN \u6280\u672f\u4f1a\u5458\u3002<\/p>\n<h3>\u53c2\u8003\u8d44\u6599\u4e0e\u7248\u672c\u5907\u6ce8<\/h3>\n<ul>\n<li>\u300aSTM32L431 \u8d85\u4f4e\u529f\u8017 STOP2 \u6a21\u5f0f\u4e0e LPUART \u5524\u9192\u4f18\u5316\u5b9e\u6218\u300b \u2014 LPUART \u5524\u9192\u7684\u53cc\u7f13\u51b2\u4e0e\u7535\u6e90\u7ba1\u7406\u7ec6\u8282<\/li>\n<li>\u300aSTM32L4 \u5b9e\u6218&#xff1a;\u7528 CubeMX \u914d\u7f6e STOP2 \u6a21\u5f0f&#xff0c;\u5b9e\u6d4b\u529f\u8017\u964d\u5230 1\u03bcA\u300b \u2014 CubeMX \u914d\u7f6e\u89d2\u5ea6\u8865\u5145<\/li>\n<li>\u300aSTM32 \u4f4e\u529f\u8017\u6a21\u5f0f\u5b9e\u6218&#xff1a;STOP \u6a21\u5f0f\u4e0b\u7684\u4e9a\u5fae\u5b89\u7535\u6d41\u63a7\u5236\u300b \u2014 \u4e03\u79cd\u529f\u8017\u6a21\u5f0f\u7684\u5b8c\u6574\u5c42\u6b21\u68b3\u7406<\/li>\n<li>\u300aSTM32L476 \u4f4e\u529f\u8017\u5b9e\u6218&#xff1a;LPTIM1 \u7cbe\u51c6\u5b9a\u65f6\u5524\u9192 STOP2 \u6a21\u5f0f\u300b \u2014 LPTIM \u6269\u5c55\u65b9\u5411\u53c2\u8003<\/li>\n<li>\u300a\u5b9e\u6d4b STM32L476 \u7684 STOP2 \u6a21\u5f0f\u6709\u591a\u7701\u7535&#xff1f;\u7528 LPTIM1 \u5b9a\u65f6\u5524\u9192\u300b \u2014 \u677f\u8f7d\u7a33\u538b\u7535\u8def\u5bf9\u5b9e\u6d4b\u7535\u6d41\u7684\u5f71\u54cd\u5206\u6790<\/li>\n<li>ST \u5b98\u65b9\u5e94\u7528\u7b14\u8bb0 AN4621&#xff08;STM32L4 \u4f4e\u529f\u8017\u6a21\u5f0f&#xff09;\u4e0e AN4746&#xff08;\u529f\u8017\u6027\u80fd\u4f18\u5316&#xff09;\u2014 \u6570\u636e\u624b\u518c\u7406\u8bba\u503c\u6765\u6e90<\/li>\n<li>ST \u5b98\u65b9\u6570\u636e\u624b\u518c DS11453&#xff08;STM32L431xx Datasheet&#xff09;\u2014 STOP2 \u6807\u79f0\u7535\u6d41\u4e0e\u5524\u9192\u65f6\u95f4<\/li>\n<\/ul>\n<p>&#x1f4dd; \u7248\u672c\u5907\u6ce8<\/p>\n<ul>\n<li>\u786c\u4ef6\u5e73\u53f0&#xff1a;STM32L431RCT6&#xff08;LQFP64&#xff09;&#043; 32.768kHz LSE &#043; 3.3V LDO<\/li>\n<li>\u8f6f\u4ef6\u7248\u672c&#xff1a;STM32CubeIDE 1.15.1 &#043; STM32CubeL4 FW 1.17.0 &#043; HAL \u5e93<\/li>\n<li>\u6d4b\u91cf\u5de5\u5177&#xff1a;Keysight 34465A \u4e07\u7528\u8868\u3001Rigol DS1054Z \u793a\u6ce2\u5668&#xff08;10\u03a9 \u91c7\u6837\u7535\u963b&#xff09;<\/li>\n<li>\u517c\u5bb9\u8bf4\u660e&#xff1a;\u4ee3\u7801\u53ef\u76f4\u63a5\u7528\u4e8e STM32L4 \u5168\u7cfb&#xff08;L431\/L476\/L496 \u7b49&#xff09;&#xff0c;\u5bc4\u5b58\u5668\u7ea7\u914d\u7f6e\u9700\u6309\u53c2\u8003\u624b\u518c\u6838\u5bf9&#xff1b;L0\/L5 \u7cfb\u5217\u9700\u8c03\u6574\u7535\u6e90\u7ba1\u7406\u5bc4\u5b58\u5668\u5b9a\u4e49<\/li>\n<li>\u5df2\u77e5\u9650\u5236&#xff1a;LSE \u65f6\u949f\u4e0b LPUART \u53ef\u9760\u6ce2\u7279\u7387 \u22649600bps&#xff1b;STOP2 \u4e0b\u4ec5 LPUART1 \u652f\u6301\u5524\u9192<\/li>\n<\/ul>\n<p>\u672c\u6587\u5b8c\u6574\u5de5\u7a0b\u4ee3\u7801\u53ef\u5728 CSDN \u4e0b\u8f7d\u9891\u9053 \u83b7\u53d6&#xff08;VIP \u514d\u8d39&#xff09;\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u76ee\u5f55\u4e00\u3001\u4e3a\u4ec0\u4e48\u4f60\u7684\u4f4e\u529f\u8017\u8bbe\u5907\\&#8221;\u7761\u4e0d\u8e0f\u5b9e\\&#8221;1.1 \u4e00\u4e2a\u5178\u578b\u7684\u7535\u6c60\u9879\u76ee\u7ffb\u8f66\u73b0\u573a1.2 \u672c\u6587\u8981\u89e3\u51b3\u7684\u95ee\u98981.3 \u524d\u7f6e\u6761\u4ef6\u4e8c\u3001STM32L4 \u4f4e\u529f\u8017\u6a21\u5f0f\u5168\u666f2.1 \u529f\u8017\u9636\u68af&#xff1a;\u4ece Run \u5230 Shutdown2.2 STOP0 \/ STOP1 \/ STOP2 \u7684\u672c\u8d28\u533a\u522b2.3 \u505c\u6b62\u6a21\u5f0f\u4e0b\u8fd8\\&#8221;\u6d3b\u7740\\&#8221;\u7684\u8d44\u6e90\u4e09\u3001\u65b9\u6848\u9009\u578b&#xff1a;\u4e3a\u4ec0\u4e48\u662f STOP2  LPUART3.1 \u4e09\u79cd\u5524\u9192\u65b9\u6848\u7684\u5bf9\u6bd43.2 \u65f6\u949f\u6e90\u9009\u62e9&#xff1a;LSE 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