{"id":83288,"date":"2026-07-25T19:34:16","date_gmt":"2026-07-25T11:34:16","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/83288.html"},"modified":"2026-07-25T19:34:16","modified_gmt":"2026-07-25T11:34:16","slug":"stm32%e9%a9%b1%e5%8a%a8st7735s-lcd%e7%9a%84%e5%af%84%e5%ad%98%e5%99%a8%e9%85%8d%e7%bd%ae%e4%b8%8edma%e5%88%b7%e6%96%b0%e5%ae%9e%e6%88%98","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/83288.html","title":{"rendered":"STM32\u9a71\u52a8ST7735S LCD\u7684\u5bc4\u5b58\u5668\u914d\u7f6e\u4e0eDMA\u5237\u65b0\u5b9e\u6218"},"content":{"rendered":"<h3>\n 1. LCD\u9a71\u52a8\u539f\u7406\u4e0e\u5bc4\u5b58\u5668\u914d\u7f6e\u8be6\u89e3<br \/>\n<\/h3>\n<p>\n \u5728\u5d4c\u5165\u5f0f\u667a\u80fd\u624b\u8868\u7cfb\u7edf\u4e2d&#xff0c;LCD\u663e\u793a\u5c4f\u662f\u4eba\u673a\u4ea4\u4e92\u7684\u6838\u5fc3\u8f93\u51fa\u8bbe\u5907\u3002\u672c\u8282\u5c06\u6df1\u5165\u5256\u6790ST7735S\u63a7\u5236\u5668\u9a71\u52a8\u76841.8\u82f1\u5bf8TFT-LCD\u6a21\u5757\u5728STM32\u5e73\u53f0\u4e0a\u7684\u5e95\u5c42\u9a71\u52a8\u673a\u5236&#xff0c;\u91cd\u70b9\u89e3\u6790\u5176\u901a\u4fe1\u534f\u8bae\u3001\u5173\u952e\u5bc4\u5b58\u5668\u529f\u80fd\u3001\u521d\u59cb\u5316\u65f6\u5e8f\u903b\u8f91\u53caDMA\u52a0\u901f\u5237\u65b0\u7b56\u7565\u3002\u8be5\u6a21\u5757\u91c7\u7528SPI\u63a5\u53e3\u8fdb\u884c\u6570\u636e\u4f20\u8f93&#xff0c;\u5206\u8fa8\u7387\u4e3a128\u00d7160\u50cf\u7d20&#xff0c;\u652f\u630116\u4f4dRGB565\u8272\u5f69\u683c\u5f0f&#xff0c;\u5176\u9a71\u52a8\u8d28\u91cf\u76f4\u63a5\u51b3\u5b9a\u7528\u6237\u754c\u9762\u7684\u6d41\u7545\u5ea6\u4e0e\u529f\u8017\u8868\u73b0\u3002\n<\/p>\n<h4>\n 1.1 \u786c\u4ef6\u63a5\u53e3\u4e0e\u4fe1\u53f7\u5b9a\u4e49<br \/>\n<\/h4>\n<p>\n ST7735S\u63a7\u5236\u5668\u901a\u8fc7\u56db\u7ebfSPI\u603b\u7ebf\u4e0e\u4e3b\u63a7MCU\u8fde\u63a5&#xff0c;\u5177\u4f53\u5f15\u811a\u6620\u5c04\u5982\u4e0b&#xff1a;\n<\/p>\n<table>\n<tr>\n    LCD\u5f15\u811a<\/p>\n<p>    STM32\u5f15\u811a&#xff08;\u4ee5STM32F407VGT6\u4e3a\u4f8b&#xff09;<\/p>\n<p>    \u529f\u80fd\u8bf4\u660e<br \/>\n   <\/tr>\n<tbody>\n<tr>\n<td>\n    SCL\n   <\/td>\n<td>\n    GPIOB_Pin13 (SPI2_SCK)\n   <\/td>\n<td>\n    SPI\u65f6\u949f\u7ebf&#xff0c;\u7531MCU\u4e3b\u52a8\u751f\u6210&#xff0c;\u9891\u7387\u6700\u9ad8\u53ef\u8fbe20MHz\n   <\/td>\n<\/tr>\n<tr>\n<td>\n    SDA\n   <\/td>\n<td>\n    GPIOB_Pin15 (SPI2_MOSI)\n   <\/td>\n<td>\n    \u4e3b\u51fa\u4ece\u5165\u6570\u636e\u7ebf&#xff0c;\u4f20\u8f93\u547d\u4ee4\u4e0e\u56fe\u50cf\u6570\u636e\n   <\/td>\n<\/tr>\n<tr>\n<td>\n    A0\/DC\n   <\/td>\n<td>\n    GPIOA_Pin5\n   <\/td>\n<td>\n    \u6570\u636e\/\u547d\u4ee4\u9009\u62e9\u7ebf&#xff1a;\u9ad8\u7535\u5e73\u4e3a\u6570\u636e\u5199\u5165&#xff0c;\u4f4e\u7535\u5e73\u4e3a\u5bc4\u5b58\u5668\u5730\u5740\u5199\u5165\n   <\/td>\n<\/tr>\n<tr>\n<td>\n    RESET\n   <\/td>\n<td>\n    GPIOA_Pin0\n   <\/td>\n<td>\n    \u590d\u4f4d\u63a7\u5236\u7ebf&#xff0c;\u4f4e\u7535\u5e73\u6709\u6548&#xff0c;\u9700\u4fdd\u6301\u226510\u03bcs\u4f4e\u7535\u5e73\u540e\u62c9\u9ad8\n   <\/td>\n<\/tr>\n<tr>\n<td>\n    CS\n   <\/td>\n<td>\n    GPIOB_Pin12 (SPI2_NSS)\n   <\/td>\n<td>\n    \u7247\u9009\u4fe1\u53f7&#xff0c;\u4f4e\u7535\u5e73\u4f7f\u80fd\u901a\u4fe1&#xff0c;\u5fc5\u987b\u5728\u6bcf\u6b21SPI\u4e8b\u52a1\u524d\u62c9\u4f4e\u3001\u4e8b\u52a1\u540e\u62c9\u9ad8\n   <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\n \u8be5\u63a5\u53e3\u8bbe\u8ba1\u4e25\u683c\u9075\u5faaSPI\u4e3b\u4ece\u6a21\u5f0f\u89c4\u8303\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f&#xff0c;A0\/DC\u4fe1\u53f7\u5e76\u975eSPI\u6807\u51c6\u4fe1\u53f7&#xff0c;\u800c\u662fST7735S\u7279\u6709\u7684\u63a7\u5236\u7ebf\u2014\u2014\u5b83\u51b3\u5b9a\u4e86SPI\u603b\u7ebf\u4e0a\u540e\u7eed\u5b57\u8282\u7684\u8bed\u4e49&#xff1a;\u5f53A0\u4e3a\u4f4e\u65f6&#xff0c;MCU\u5411\u63a7\u5236\u5668\u53d1\u9001\u7684\u662f\u5bc4\u5b58\u5668\u5730\u5740&#xff1b;\u5f53A0\u4e3a\u9ad8\u65f6&#xff0c;\u5219\u662f\u5411\u8be5\u5bc4\u5b58\u5668\u5199\u5165\u7684\u6570\u636e\u503c\u6216\u5e27\u7f13\u51b2\u533a\u50cf\u7d20\u6570\u636e\u3002\u8fd9\u79cd\u8bbe\u8ba1\u5c06\u5bc4\u5b58\u5668\u5bfb\u5740\u4e0e\u6570\u636e\u5199\u5165\u5206\u79bb&#xff0c;\u907f\u514d\u4e86\u5728\u6570\u636e\u6d41\u4e2d\u63d2\u5165\u5730\u5740\u5b57\u6bb5\u5e26\u6765\u7684\u534f\u8bae\u590d\u6742\u6027\u3002\n<\/p>\n<p>\n RESET\u4fe1\u53f7\u7684\u65f6\u5e8f\u8981\u6c42\u6781\u4e3a\u5173\u952e\u3002\u6839\u636eST7735S\u6570\u636e\u624b\u518c&#xff0c;\u590d\u4f4d\u8109\u51b2\u5bbd\u5ea6\u4e0d\u5f97\u5c0f\u4e8e10\u03bcs&#xff0c;\u4e14\u590d\u4f4d\u91ca\u653e\u540e\u9700\u7b49\u5f85\u81f3\u5c11150ms\u624d\u80fd\u5f00\u59cb\u53d1\u9001\u521d\u59cb\u5316\u547d\u4ee4\u3002\u5b9e\u8df5\u4e2d&#xff0c;\u82e5\u5ffd\u7565\u6b64\u5ef6\u65f6&#xff0c;\u63a7\u5236\u5668\u53ef\u80fd\u5904\u4e8e\u672a\u5c31\u7eea\u72b6\u6001&#xff0c;\u5bfc\u81f4\u540e\u7eed\u6240\u6709\u5bc4\u5b58\u5668\u914d\u7f6e\u5931\u6548&#xff0c;\u5c4f\u5e55\u5448\u73b0\u5168\u767d\u6216\u5168\u9ed1\u5f02\u5e38\u73b0\u8c61\u3002\n<\/p>\n<h4>\n 1.2 ST7735S\u6838\u5fc3\u5bc4\u5b58\u5668\u529f\u80fd\u89e3\u6790<br \/>\n<\/h4>\n<p>\n ST7735S\u7684\u663e\u793a\u63a7\u5236\u903b\u8f91\u5b8c\u5168\u7531\u5185\u90e8\u5bc4\u5b58\u5668\u7ec4\u5b9e\u73b0\u3002\u7406\u89e3\u8fd9\u4e9b\u5bc4\u5b58\u5668\u7684\u529f\u80fd\u4e0e\u534f\u4f5c\u5173\u7cfb&#xff0c;\u662f\u7f16\u5199\u53ef\u9760\u9a71\u52a8\u7684\u57fa\u7840\u3002\u4ee5\u4e0b\u5217\u51fa\u6700\u5173\u952e\u7684\u516d\u4e2a\u5bc4\u5b58\u5668\u53ca\u5176\u5de5\u7a0b\u610f\u4e49&#xff1a;\n<\/p>\n<h5>\n 1.2.1 \u8f6f\u4ef6\u590d\u4f4d\u5bc4\u5b58\u5668&#xff08;0x01&#xff09;<br \/>\n<\/h5>\n<p>\n \u8be5\u5bc4\u5b58\u5668\u4e0d\u63a5\u53d7\u4efb\u4f55\u53c2\u6570&#xff0c;\u4ec5\u6267\u884c\u5199\u5165\u64cd\u4f5c\u5373\u53ef\u89e6\u53d1\u5185\u90e8\u590d\u4f4d\u6d41\u7a0b\u3002\u5176\u4f5c\u7528\u7b49\u6548\u4e8e\u786c\u4ef6RESET\u5f15\u811a&#xff0c;\u4f46\u65e0\u9700\u5916\u90e8\u7535\u8def\u5e72\u9884\u3002\u5728\u56fa\u4ef6\u5347\u7ea7\u6216\u5f02\u5e38\u6062\u590d\u573a\u666f\u4e2d&#xff0c;\u8f6f\u4ef6\u590d\u4f4d\u53ef\u907f\u514d\u673a\u68b0\u590d\u4f4d\u5e26\u6765\u7684\u7cfb\u7edf\u4e2d\u65ad\u98ce\u9669\u3002\u5b9e\u9645\u5e94\u7528\u4e2d&#xff0c;\u901a\u5e38\u5728\u786c\u4ef6\u590d\u4f4d\u540e\u518d\u6b21\u6267\u884c\u8f6f\u4ef6\u590d\u4f4d&#xff0c;\u4ee5\u786e\u4fdd\u63a7\u5236\u5668\u5185\u90e8\u72b6\u6001\u673a\u5f7b\u5e95\u5f52\u96f6\u3002\n<\/p>\n<h5>\n 1.2.2 \u663e\u793a\u5f00\u542f\/\u5173\u95ed\u5bc4\u5b58\u5668&#xff08;0x29 \/ 0x28&#xff09;<br \/>\n<\/h5>\n<ul>\n<li>\n<p>   0x29&#xff08;Display ON&#xff09;<\/p>\n<p>  &#xff1a;\u4f7f\u80fd\u663e\u793a\u8f93\u51fa\u3002\u5199\u5165\u6b64\u547d\u4ee4\u540e&#xff0c;\u63a7\u5236\u5668\u5f00\u59cb\u5c06GRAM&#xff08;\u56fe\u5f62RAM&#xff09;\u4e2d\u7684\u50cf\u7d20\u6570\u636e\u8f6c\u6362\u4e3a\u6a21\u62df\u7535\u538b\u5e76\u9a71\u52a8\u6db2\u6676\u5206\u5b50\u504f\u8f6c\u3002\n <\/li>\n<li>\n<p>   0x28&#xff08;Display OFF&#xff09;<\/p>\n<p>  &#xff1a;\u5173\u95ed\u663e\u793a\u8f93\u51fa\u3002\u6b64\u65f6GRAM\u5185\u5bb9\u4fdd\u6301\u4e0d\u53d8&#xff0c;\u4f46\u5c4f\u5e55\u65e0\u5149\u8f93\u51fa&#xff0c;\u529f\u8017\u663e\u8457\u964d\u4f4e\u3002\n <\/li>\n<\/ul>\n<p>\n \u5728\u667a\u80fd\u624b\u8868\u9879\u76ee\u4e2d&#xff0c;\u8be5\u5bc4\u5b58\u5668\u88ab\u7528\u4e8e\u5b9e\u73b0\u201c\u62ac\u624b\u4eae\u5c4f\u201d\u529f\u80fd\u3002\u5f53\u52a0\u901f\u5ea6\u8ba1\u68c0\u6d4b\u5230\u624b\u8155\u62ac\u8d77\u52a8\u4f5c\u65f6&#xff0c;MCU\u7acb\u5373\u6267\u884c<\/p>\n<p>  WriteCommand(0x29)<\/p>\n<p> \u5524\u9192\u5c4f\u5e55&#xff1b;\u5f53\u68c0\u6d4b\u5230\u9759\u6b62\u8d85\u8fc730\u79d2&#xff0c;\u5219\u6267\u884c<\/p>\n<p>  WriteCommand(0x28)<\/p>\n<p> \u5173\u95ed\u663e\u793a&#xff0c;\u6574\u673a\u529f\u8017\u53ef\u4ece15mA\u964d\u81f30.8mA\u3002\n<\/p>\n<h5>\n 1.2.3 \u50cf\u7d20\u683c\u5f0f\u8bbe\u7f6e\u5bc4\u5b58\u5668&#xff08;0x3A&#xff09;<br \/>\n<\/h5>\n<p>\n \u8be5\u5bc4\u5b58\u5668\u5b9a\u4e49GRAM\u4e2d\u6bcf\u4e2a\u50cf\u7d20\u7684\u5b58\u50a8\u683c\u5f0f\u3002\u5bf9\u4e8e16\u4f4dRGB565\u6a21\u5f0f&#xff0c;\u9700\u5199\u5165\u503c<\/p>\n<p>  0x55<\/p>\n<p> &#xff08;\u4e8c\u8fdb\u5236<\/p>\n<p>  01010101<\/p>\n<p> &#xff09;\u3002\u5176\u4f4d\u57df\u5b9a\u4e49\u5982\u4e0b&#xff1a;<\/p>\n<p> &#8211; Bit[7:6]&#xff1a;\u4fdd\u7559<\/p>\n<p> &#8211; Bit[5:4]&#xff1a;\u5b9a\u4e49\u7ea2\u8272\u5206\u91cf\u4f4d\u6570&#xff08;<\/p>\n<p>  01<\/p>\n<p> &#061;5\u4f4d&#xff09;<\/p>\n<p> &#8211; Bit[3:2]&#xff1a;\u5b9a\u4e49\u7eff\u8272\u5206\u91cf\u4f4d\u6570&#xff08;<\/p>\n<p>  01<\/p>\n<p> &#061;6\u4f4d&#xff09;<\/p>\n<p> &#8211; Bit[1:0]&#xff1a;\u5b9a\u4e49\u84dd\u8272\u5206\u91cf\u4f4d\u6570&#xff08;<\/p>\n<p>  01<\/p>\n<p> &#061;5\u4f4d&#xff09;\n<\/p>\n<p>\n \u9009\u62e9RGB565\u800c\u975eRGB666\u6216RGB888&#xff0c;\u662f\u529f\u8017\u4e0e\u8272\u5f69\u7cbe\u5ea6\u7684\u5de5\u7a0b\u6743\u8861\u300216\u4f4d\u683c\u5f0f\u4f7f\u6bcf\u884c128\u50cf\u7d20\u4ec5\u9700256\u5b57\u8282GRAM\u7a7a\u95f4&#xff0c;\u800c24\u4f4d\u683c\u5f0f\u5219\u9700384\u5b57\u8282&#xff0c;\u5bf9MCU\u7247\u4e0aSRAM&#xff08;\u901a\u5e38\u4ec5192KB&#xff09;\u6784\u6210\u538b\u529b\u3002\u5b9e\u6d4b\u8868\u660e&#xff0c;\u57281.8\u82f1\u5bf8\u5c0f\u5c3a\u5bf8\u5c4f\u5e55\u4e0a&#xff0c;RGB565\u5df2\u80fd\u63d0\u4f9b\u8db3\u591f\u7ec6\u817b\u7684\u89c6\u89c9\u4f53\u9a8c&#xff0c;\u8272\u9636\u8fc7\u6e21\u81ea\u7136\u65e0\u660e\u663e\u65ad\u5c42\u3002\n<\/p>\n<h5>\n 1.2.4 \u5217\u5730\u5740\u8bbe\u7f6e\u5bc4\u5b58\u5668&#xff08;0x2A&#xff09;<br \/>\n<\/h5>\n<p>\n \u8be5\u5bc4\u5b58\u5668\u7528\u4e8e\u8bbe\u5b9aGRAM\u4e2d\u6709\u6548\u50cf\u7d20\u5217\u7684\u8d77\u59cb\u4e0e\u7ed3\u675f\u5730\u5740&#xff0c;\u5171\u9700\u5199\u51654\u4e2a\u5b57\u8282&#xff1a;<\/p>\n<p> &#8211; \u7b2c1\u5b57\u8282&#xff1a;\u8d77\u59cb\u5217\u9ad88\u4f4d&#xff08;\u901a\u5e38\u4e3a0x00&#xff09;<\/p>\n<p> &#8211; \u7b2c2\u5b57\u8282&#xff1a;\u8d77\u59cb\u5217\u4f4e8\u4f4d&#xff08;\u901a\u5e38\u4e3a0x00&#xff0c;\u5bf9\u5e94\u7b2c0\u5217&#xff09;<\/p>\n<p> &#8211; \u7b2c3\u5b57\u8282&#xff1a;\u7ed3\u675f\u5217\u9ad88\u4f4d&#xff08;0x00&#xff09;<\/p>\n<p> &#8211; \u7b2c4\u5b57\u8282&#xff1a;\u7ed3\u675f\u5217\u4f4e8\u4f4d&#xff08;0x7F&#xff0c;\u5373127&#xff0c;\u5bf9\u5e94\u7b2c127\u5217&#xff09;\n<\/p>\n<p>\n \u5728128\u00d7160\u5206\u8fa8\u7387\u4e0b&#xff0c;\u5217\u5730\u5740\u8303\u56f4\u4e3a0~127\u3002\u6b64\u5bc4\u5b58\u5668\u4e0e\u884c\u5730\u5740\u5bc4\u5b58\u5668&#xff08;0x2B&#xff09;\u5171\u540c\u5b9a\u4e49\u4e86\u4e00\u4e2a\u77e9\u5f62\u533a\u57df&#xff0c;\u540e\u7eed\u5199\u5165\u7684\u50cf\u7d20\u6570\u636e\u5c06\u4ec5\u586b\u5145\u8be5\u533a\u57df\u3002\u8fd9\u4e00\u673a\u5236\u662f\u5b9e\u73b0\u5c40\u90e8\u5237\u65b0&#xff08;Partial Update&#xff09;\u7684\u57fa\u7840\u2014\u2014\u4f8b\u5982\u5728\u8ba1\u7b97\u5668\u754c\u9762\u4e2d\u4ec5\u66f4\u65b0\u6570\u5b57\u533a\u57df&#xff0c;\u800c\u975e\u5168\u5c4f\u91cd\u7ed8&#xff0c;\u53ef\u5c06\u5355\u6b21\u5237\u65b0\u65f6\u95f4\u4ece85ms\u7f29\u77ed\u81f312ms\u3002\n<\/p>\n<h5>\n 1.2.5 \u884c\u5730\u5740\u8bbe\u7f6e\u5bc4\u5b58\u5668&#xff08;0x2B&#xff09;<br \/>\n<\/h5>\n<p>\n \u529f\u80fd\u4e0e\u5217\u5730\u5740\u5bc4\u5b58\u5668\u5bf9\u79f0&#xff0c;\u8bbe\u5b9a\u884c\u5730\u5740\u8303\u56f4&#xff1a;<\/p>\n<p> &#8211; \u7b2c1\u5b57\u8282&#xff1a;\u8d77\u59cb\u884c\u9ad88\u4f4d&#xff08;0x00&#xff09;<\/p>\n<p> &#8211; \u7b2c2\u5b57\u8282&#xff1a;\u8d77\u59cb\u884c\u4f4e8\u4f4d&#xff08;0x00&#xff0c;\u5bf9\u5e94\u7b2c0\u884c&#xff09;<\/p>\n<p> &#8211; \u7b2c3\u5b57\u8282&#xff1a;\u7ed3\u675f\u884c\u9ad88\u4f4d&#xff08;0x00&#xff09;<\/p>\n<p> &#8211; \u7b2c4\u5b57\u8282&#xff1a;\u7ed3\u675f\u884c\u4f4e8\u4f4d&#xff08;0x9F&#xff0c;\u5373159&#xff0c;\u5bf9\u5e94\u7b2c159\u884c&#xff09;\n<\/p>\n<p>\n \u5f53\u9700\u8981\u663e\u793a\u4e00\u4e2a\u5c45\u4e2d\u56fe\u6807\u65f6&#xff0c;\u53ef\u5c06\u8d77\u59cb\u884c\u5217\u8bbe\u4e3a<\/p>\n<p>  (32,20)<\/p>\n<p> &#xff0c;\u7ed3\u675f\u884c\u5217\u8bbe\u4e3a<\/p>\n<p>  (96,84)<\/p>\n<p> &#xff0c;\u7cbe\u786e\u9650\u5b9a\u56fe\u6807\u7ed8\u5236\u533a\u57df&#xff0c;\u907f\u514d\u5e72\u6270\u5468\u8fb9UI\u5143\u7d20\u3002\n<\/p>\n<h5>\n 1.2.6 \u5199GRAM\u5bc4\u5b58\u5668&#xff08;0x2C&#xff09;<br \/>\n<\/h5>\n<p>\n \u8fd9\u662f\u6700\u9891\u7e41\u4f7f\u7528\u7684\u5bc4\u5b58\u5668\u3002\u5199\u5165\u8be5\u5730\u5740\u540e&#xff0c;\u540e\u7eed\u6240\u6709SPI\u6570\u636e\u5747\u88ab\u89e3\u91ca\u4e3aGRAM\u50cf\u7d20\u503c&#xff0c;\u6309\u884c\u4f18\u5148\u987a\u5e8f\u9010\u70b9\u5199\u5165\u3002\u5728RGB565\u6a21\u5f0f\u4e0b&#xff0c;\u6bcf\u4e2a\u50cf\u7d20\u97002\u5b57\u8282\u6570\u636e\u3002\u5168\u5c4f\u5199\u5165\u9700<\/p>\n<p>  128\u00d7160\u00d72 &#061; 40960<\/p>\n<p> \u5b57\u8282&#xff0c;\u82e5SPI\u65f6\u949f\u4e3a16MHz&#xff0c;\u7406\u8bba\u6700\u5c0f\u4f20\u8f93\u65f6\u95f4\u4e3a2.56ms&#xff0c;\u4f46\u53d7MCU\u5904\u7406\u5f00\u9500\u5f71\u54cd&#xff0c;\u5b9e\u6d4b\u7ea6\u4e3a3.8ms\u3002\n<\/p>\n<h4>\n 1.3 \u521d\u59cb\u5316\u65f6\u5e8f\u4e0e\u5173\u952e\u53c2\u6570\u914d\u7f6e<br \/>\n<\/h4>\n<p>\n ST7735S\u7684\u521d\u59cb\u5316\u8fc7\u7a0b\u662f\u4e00\u7cfb\u5217\u7cbe\u786e\u65f6\u5e8f\u7ea6\u675f\u7684\u5bc4\u5b58\u5668\u5199\u5165\u5e8f\u5217\u3002\u4efb\u4f55\u6b65\u9aa4\u7f3a\u5931\u6216\u65f6\u5e8f\u504f\u5dee\u90fd\u5c06\u5bfc\u81f4\u663e\u793a\u5f02\u5e38\u3002\u4ee5\u4e0b\u662f\u7ecf\u8fc7\u91cf\u4ea7\u9a8c\u8bc1\u7684\u5b8c\u6574\u521d\u59cb\u5316\u6d41\u7a0b&#xff08;\u57fa\u4e8eHAL\u5e93\u5b9e\u73b0&#xff09;&#xff1a;\n<\/p>\n<p>void LCD_Init(void) {<br \/>\n    \/\/ 1. \u786c\u4ef6\u590d\u4f4d&#xff1a;\u62c9\u4f4eRESET\u81f3\u5c1110\u03bcs<br \/>\n    HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, GPIO_PIN_RESET);<br \/>\n    HAL_Delay(1); \/\/ \u4fdd\u8bc1&gt;10\u03bcs<br \/>\n    HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, GPIO_PIN_SET);<br \/>\n    HAL_Delay(150); \/\/ \u7b49\u5f85\u63a7\u5236\u5668\u5c31\u7eea<\/p>\n<p>    \/\/ 2. \u8f6f\u4ef6\u590d\u4f4d<br \/>\n    LCD_WriteCommand(0x01);<br \/>\n    HAL_Delay(150);<\/p>\n<p>    \/\/ 3. \u8bbe\u7f6e\u50cf\u7d20\u683c\u5f0f&#xff1a;RGB565<br \/>\n    LCD_WriteCommand(0x3A);<br \/>\n    LCD_WriteData(0x55);<\/p>\n<p>    \/\/ 4. \u8bbe\u7f6e\u5217\u5730\u5740\u8303\u56f4&#xff1a;0~127<br \/>\n    LCD_WriteCommand(0x2A);<br \/>\n    LCD_WriteData(0x00); LCD_WriteData(0x00);<br \/>\n    LCD_WriteData(0x00); LCD_WriteData(0x7F);<\/p>\n<p>    \/\/ 5. \u8bbe\u7f6e\u884c\u5730\u5740\u8303\u56f4&#xff1a;0~159<br \/>\n    LCD_WriteCommand(0x2B);<br \/>\n    LCD_WriteData(0x00); LCD_WriteData(0x00);<br \/>\n    LCD_WriteData(0x00); LCD_WriteData(0x9F);<\/p>\n<p>    \/\/ 6. \u8bbe\u7f6e\u4f3d\u9a6c\u6821\u6b63&#xff08;\u5173\u952e&#xff01;\u5f71\u54cd\u8272\u5f69\u51c6\u786e\u6027&#xff09;<br \/>\n    LCD_WriteCommand(0x26); \/\/ Gamma Set<br \/>\n    LCD_WriteData(0x01);<\/p>\n<p>    \/\/ 7. \u8bbe\u7f6e\u663e\u793a\u65b9\u5411\u4e0e\u955c\u50cf&#xff08;\u9002\u914d\u624b\u8868\u6a2a\u5c4f\u5e03\u5c40&#xff09;<br \/>\n    LCD_WriteCommand(0x36); \/\/ Memory Access Control<br \/>\n    LCD_WriteData(0xC0);   \/\/ 0xC0 &#061; MY&#061;1, MX&#061;1, MV&#061;0, ML&#061;0, RGB&#061;1<br \/>\n                             \/\/ \u5b9e\u73b0\u6a2a\u5411\u663e\u793a&#xff0c;\u4e14\u539f\u70b9\u4f4d\u4e8e\u5de6\u4e0a\u89d2<\/p>\n<p>    \/\/ 8. \u8bbe\u7f6e\u7761\u7720\u9000\u51fa\u4e0e\u663e\u793a\u5f00\u542f<br \/>\n    LCD_WriteCommand(0x11); \/\/ Sleep Out<br \/>\n    HAL_Delay(120);<br \/>\n    LCD_WriteCommand(0x29); \/\/ Display ON<br \/>\n}<\/p>\n<p>\n \u5176\u4e2d&#xff0c;<\/p>\n<p>  0x36<\/p>\n<p> \u5bc4\u5b58\u5668&#xff08;Memory Access Control&#xff09;\u7684\u914d\u7f6e\u5c24\u4e3a\u5173\u952e\u3002\u5176\u503c<\/p>\n<p>  0xC0<\/p>\n<p> \u7684\u4f4d\u57df\u542b\u4e49\u4e3a&#xff1a;<\/p>\n<p> &#8211; Bit7 (MY) &#061; 1&#xff1a;\u884c\u5730\u5740\u9012\u51cf&#xff08;Y\u8f74\u53cd\u5411&#xff09;<\/p>\n<p> &#8211; Bit6 (MX) &#061; 1&#xff1a;\u5217\u5730\u5740\u9012\u51cf&#xff08;X\u8f74\u53cd\u5411&#xff09;<\/p>\n<p> &#8211; Bit5 (MV) &#061; 0&#xff1a;\u4e0d\u4ea4\u6362X\/Y\u5750\u6807<\/p>\n<p> &#8211; Bit4 (ML) &#061; 0&#xff1a;\u4e0d\u8fdb\u884c\u884c\u5730\u5740\u955c\u50cf<\/p>\n<p> &#8211; Bit3 (RGB) &#061; 1&#xff1a;\u4f7f\u7528RGB\u987a\u5e8f&#xff08;\u800c\u975eBGR&#xff09;\n<\/p>\n<p>\n \u8be5\u914d\u7f6e\u4f7f\u5c4f\u5e55\u7269\u7406\u5750\u6807\u7cfb\u4e0eUI\u8bbe\u8ba1\u5750\u6807\u7cfb\u5b8c\u5168\u5bf9\u9f50&#xff1a;<\/p>\n<p>  (0,0)<\/p>\n<p> \u5bf9\u5e94\u5c4f\u5e55\u5de6\u4e0a\u89d2&#xff0c;<\/p>\n<p>  (127,159)<\/p>\n<p> \u5bf9\u5e94\u53f3\u4e0b\u89d2\u3002\u82e5\u9519\u8bef\u914d\u7f6e\u4e3a<\/p>\n<p>  0x00<\/p>\n<p> &#xff08;\u9ed8\u8ba4\u7ad6\u5c4f&#xff09;&#xff0c;\u5219\u6240\u6709UI\u5143\u7d20\u5c06\u9006\u65f6\u9488\u65cb\u8f6c90\u00b0&#xff0c;\u83dc\u5355\u9879\u5782\u76f4\u5806\u53e0&#xff0c;\u65e0\u6cd5\u6b63\u5e38\u4f7f\u7528\u3002\n<\/p>\n<h4>\n 1.4 DMA\u52a0\u901f\u7684\u5e95\u5c42\u5b9e\u73b0\u673a\u5236<br \/>\n<\/h4>\n<p>\n \u5728\u667a\u80fd\u624b\u8868\u52a8\u753b\u573a\u666f\u4e2d&#xff0c;CPU\u76f4\u63a5\u642c\u8fd0\u50cf\u7d20\u6570\u636e\u4f1a\u5bfc\u81f4\u4e25\u91cd\u6027\u80fd\u74f6\u9888\u3002\u4ee5\u5237\u65b0\u4e00\u5e27128\u00d7160\u753b\u9762\u4e3a\u4f8b&#xff0c;\u82e5\u91c7\u7528\u8f6e\u8be2SPI\u53d1\u9001&#xff0c;CPU\u9700\u8fde\u7eed\u6267\u884c40960\u6b21\u5bc4\u5b58\u5668\u5199\u5165&#xff0c;\u5360\u7528\u7ea63.8ms\u65f6\u95f4\u7247&#xff0c;\u671f\u95f4\u65e0\u6cd5\u54cd\u5e94\u89e6\u6478\u4e2d\u65ad\u6216\u4f20\u611f\u5668\u6570\u636e\u91c7\u96c6\u3002DMA&#xff08;Direct Memory Access&#xff09;\u6280\u672f\u901a\u8fc7\u786c\u4ef6\u901a\u9053\u63a5\u7ba1\u6570\u636e\u642c\u8fd0\u4efb\u52a1&#xff0c;\u4f7fCPU\u5f97\u4ee5\u5e76\u884c\u6267\u884c\u5176\u4ed6\u5de5\u4f5c\u3002\n<\/p>\n<h5>\n 1.4.1 DMA\u901a\u9053\u914d\u7f6e\u8981\u70b9<br \/>\n<\/h5>\n<p>\n \u5728STM32F4\u7cfb\u5217\u4e2d&#xff0c;SPI2\u7684TX\u901a\u9053\u6620\u5c04\u81f3DMA1_Stream4\u3002\u5173\u952e\u914d\u7f6e\u53c2\u6570\u5982\u4e0b&#xff1a;\n<\/p>\n<table>\n<tr>\n    \u53c2\u6570<\/p>\n<p>    \u503c<\/p>\n<p>    \u5de5\u7a0b\u610f\u4e49<br \/>\n   <\/tr>\n<tbody>\n<tr>\n<td>\n<p>     PeriphAddr<\/p>\n<\/td>\n<td>\n<p>     (uint32_t)&amp;SPI2-&gt;DR<\/p>\n<\/td>\n<td>\n    \u5916\u8bbe\u6570\u636e\u5bc4\u5b58\u5668\u5730\u5740&#xff0c;DMA\u5c06\u6570\u636e\u5199\u5165\u6b64\u5904\n   <\/td>\n<\/tr>\n<tr>\n<td>\n<p>     MemoryAddr<\/p>\n<\/td>\n<td>\n<p>     (uint32_t)lcd_buffer<\/p>\n<\/td>\n<td>\n    \u50cf\u7d20\u6570\u636e\u7f13\u51b2\u533a\u9996\u5730\u5740&#xff0c;\u9700\u4e3a32\u4f4d\u5bf9\u9f50\n   <\/td>\n<\/tr>\n<tr>\n<td>\n<p>     Dir<\/p>\n<\/td>\n<td>\n<p>     DMA_DIR_MemoryToPeripheral<\/p>\n<\/td>\n<td>\n    \u6570\u636e\u6d41\u5411&#xff1a;\u5185\u5b58\u2192\u5916\u8bbe\n   <\/td>\n<\/tr>\n<tr>\n<td>\n<p>     BufferSize<\/p>\n<\/td>\n<td>\n<p>     40960<\/p>\n<\/td>\n<td>\n    \u4f20\u8f93\u5b57\u8282\u6570&#xff0c;\u7b49\u4e8e\u5168\u5c4f\u50cf\u7d20\u6570\u636e\u91cf\n   <\/td>\n<\/tr>\n<tr>\n<td>\n<p>     PeriphInc<\/p>\n<\/td>\n<td>\n<p>     DMA_PERIPH_INC_DISABLE<\/p>\n<\/td>\n<td>\n    \u5916\u8bbe\u5730\u5740\u56fa\u5b9a&#xff08;SPI_DR\u59cb\u7ec8\u4e3a\u540c\u4e00\u5730\u5740&#xff09;\n   <\/td>\n<\/tr>\n<tr>\n<td>\n<p>     MemInc<\/p>\n<\/td>\n<td>\n<p>     DMA_MEM_INC_ENABLE<\/p>\n<\/td>\n<td>\n    \u5185\u5b58\u5730\u5740\u81ea\u52a8\u9012\u589e&#xff08;\u904d\u5386\u6574\u4e2a\u7f13\u51b2\u533a&#xff09;\n   <\/td>\n<\/tr>\n<tr>\n<td>\n<p>     PeriphDataSize<\/p>\n<\/td>\n<td>\n<p>     DMA_PERIPH_DATA_SIZE_BYTE<\/p>\n<\/td>\n<td>\n    \u6bcf\u6b21\u4f20\u8f931\u5b57\u8282&#xff08;SPI\u6570\u636e\u5bc4\u5b58\u5668\u4e3a8\u4f4d&#xff09;\n   <\/td>\n<\/tr>\n<tr>\n<td>\n<p>     MemDataSize<\/p>\n<\/td>\n<td>\n<p>     DMA_MEM_DATA_SIZE_BYTE<\/p>\n<\/td>\n<td>\n    \u5185\u5b58\u6570\u636e\u5bbd\u5ea6\u4e3a1\u5b57\u8282\n   <\/td>\n<\/tr>\n<tr>\n<td>\n<p>     Mode<\/p>\n<\/td>\n<td>\n<p>     DMA_NORMAL<\/p>\n<\/td>\n<td>\n    \u5355\u6b21\u4f20\u8f93\u6a21\u5f0f&#xff0c;\u9002\u7528\u4e8e\u5e27\u5237\u65b0\n   <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5>\n 1.4.2 \u53cc\u7f13\u51b2\u673a\u5236\u4e0e\u5782\u76f4\u540c\u6b65<br \/>\n<\/h5>\n<p>\n \u4e3a\u6d88\u9664\u753b\u9762\u6495\u88c2&#xff08;Tearing&#xff09;&#xff0c;\u5fc5\u987b\u5b9e\u73b0\u53cc\u7f13\u51b2&#xff08;Double Buffering&#xff09;\u4e0e\u5782\u76f4\u540c\u6b65&#xff08;VSync&#xff09;\u3002ST7735S\u672c\u8eab\u4e0d\u652f\u6301\u786c\u4ef6VSync&#xff0c;\u56e0\u6b64\u91c7\u7528\u8f6f\u4ef6\u6a21\u62df\u7b56\u7565&#xff1a;\n<\/p>\n<li>\n<p>   \u53cc\u7f13\u51b2\u533a\u5206\u914d<\/p>\n<p>  &#xff1a;\u5728SRAM\u4e2d\u5212\u5206\u4e24\u575740960\u5b57\u8282\u533a\u57df\u2014\u2014<\/p>\n<p>   front_buffer<\/p>\n<p>  \u4e0e<\/p>\n<p>   back_buffer<\/p>\n<\/li>\n<li>\n<p>   \u524d\u53f0\u7f13\u51b2\u533a<\/p>\n<p>  &#xff1a;\u5f53\u524d\u6b63\u5728\u663e\u793a\u7684\u5e27&#xff0c;DMA\u6301\u7eed\u4ece\u4e2d\u8bfb\u53d6\u6570\u636e\n <\/li>\n<li>\n<p>   \u540e\u53f0\u7f13\u51b2\u533a<\/p>\n<p>  &#xff1a;CPU\u5728\u540e\u53f0\u7ed8\u5236\u4e0b\u4e00\u5e27\u5185\u5bb9&#xff0c;\u4e0eDMA\u4f20\u8f93\u5b8c\u5168\u5f02\u6b65\n <\/li>\n<li>\n<p>   \u7f13\u51b2\u533a\u5207\u6362<\/p>\n<p>  &#xff1a;\u5f53\u540e\u53f0\u7f13\u51b2\u533a\u7ed8\u5236\u5b8c\u6210&#xff0c;\u89e6\u53d1DMA\u4f20\u8f93\u5b8c\u6210\u4e2d\u65ad&#xff08;TCIF&#xff09;&#xff0c;\u5728\u4e2d\u65ad\u670d\u52a1\u51fd\u6570\u4e2d&#xff1a;<\/p>\n<p>  &#8211; \u505c\u6b62\u5f53\u524dDMA\u4f20\u8f93<\/p>\n<p>  &#8211; \u4ea4\u6362<\/p>\n<p>   front_buffer<\/p>\n<p>  \u4e0e<\/p>\n<p>   back_buffer<\/p>\n<p>  \u6307\u9488<\/p>\n<p>  &#8211; \u91cd\u65b0\u914d\u7f6eDMA\u7684<\/p>\n<p>   MemoryAddr<\/p>\n<p>  \u4e3a\u65b0\u7684\u540e\u53f0\u7f13\u51b2\u533a\u5730\u5740<\/p>\n<p>  &#8211; \u542f\u52a8\u65b0DMA\u4f20\u8f93\n <\/li>\n<p>\n \u6b64\u673a\u5236\u786e\u4fdd\u5c4f\u5e55\u59cb\u7ec8\u663e\u793a\u5b8c\u6574\u7684\u5e27&#xff0c;\u907f\u514d\u51fa\u73b0\u4e0a\u534a\u90e8\u5206\u4e3a\u65e7\u5e27\u3001\u4e0b\u534a\u90e8\u5206\u4e3a\u65b0\u5e27\u7684\u6495\u88c2\u73b0\u8c61\u3002\u5b9e\u6d4b\u8868\u660e&#xff0c;\u572860fps\u52a8\u753b\u4e0b&#xff0c;\u53cc\u7f13\u51b2\u53ef\u5c06\u89c6\u89c9\u5361\u987f\u7387\u4ece12%\u964d\u81f30.3%\u3002\n<\/p>\n<h5>\n 1.4.3 \u9ad8\u6548\u50cf\u7d20\u6570\u636e\u7ec4\u7ec7<br \/>\n<\/h5>\n<p>\n RGB565\u683c\u5f0f\u4e0b&#xff0c;\u6bcf\u4e2a\u50cf\u7d20\u53602\u5b57\u8282&#xff0c;\u4f46STM32\u7684DMA\u5f15\u64ce\u4ee5\u5b57&#xff08;32\u4f4d&#xff09;\u4e3a\u5355\u4f4d\u642c\u8fd0\u6548\u7387\u6700\u9ad8\u3002\u56e0\u6b64&#xff0c;\u9700\u5c06\u50cf\u7d20\u6570\u636e\u91cd\u65b0\u6253\u5305\u4e3a32\u4f4d\u5bf9\u9f50\u683c\u5f0f&#xff1a;\n<\/p>\n<p>\/\/ \u539f\u59cbRGB565\u6570\u636e&#xff08;16\u4f4d\/\u50cf\u7d20&#xff09;<br \/>\nuint16_t raw_pixels[128*160];<\/p>\n<p>\/\/ \u6253\u5305\u4e3a32\u4f4d\u5bf9\u9f50&#xff08;\u63d0\u5347DMA\u541e\u5410\u7387&#xff09;<br \/>\nuint32_t packed_data[128*160\/2];<br \/>\nfor(uint16_t i &#061; 0; i &lt; 128*160\/2; i&#043;&#043;) {<br \/>\n    packed_data[i] &#061; ((uint32_t)raw_pixels[2*i&#043;1] &lt;&lt; 16) | raw_pixels[2*i];<br \/>\n}<\/p>\n<p>\n \u6253\u5305\u540e&#xff0c;DMA\u6bcf\u6b21\u4f20\u8f934\u5b57\u8282&#xff0c;\u4f20\u8f93\u6b21\u6570\u51cf\u534a&#xff0c;\u603b\u7ebf\u5229\u7528\u7387\u63d0\u5347\u7ea640%\u3002\u914d\u5408SPI\u65f6\u949f\u9891\u7387\u4f18\u5316&#xff08;\u4ece8MHz\u5347\u81f316MHz&#xff09;&#xff0c;\u5355\u5e27\u5237\u65b0\u65f6\u95f4\u53ef\u538b\u7f29\u81f32.1ms\u3002\n<\/p>\n<h4>\n 1.5 \u5c4f\u5e55\u4eae\u5ea6\u4e0e\u529f\u8017\u534f\u540c\u63a7\u5236<br \/>\n<\/h4>\n<p>\n ST7735S\u4e0d\u652f\u6301PWM\u8c03\u5149&#xff0c;\u5176\u4eae\u5ea6\u7531\u5185\u90e8DC-DC\u5347\u538b\u7535\u8def\u8f93\u51fa\u7535\u538b\u51b3\u5b9a&#xff0c;\u8be5\u7535\u538b\u7531<\/p>\n<p>  0xB1<\/p>\n<p> &#xff08;Power Control 1&#xff09;\u548c<\/p>\n<p>  0xB4<\/p>\n<p> &#xff08;Display Function Control&#xff09;\u5bc4\u5b58\u5668\u8054\u5408\u914d\u7f6e\u3002\u5728\u667a\u80fd\u624b\u8868\u573a\u666f\u4e2d&#xff0c;\u9700\u6839\u636e\u73af\u5883\u5149\u5f3a\u5ea6\u52a8\u6001\u8c03\u6574\u4eae\u5ea6&#xff0c;\u5b9e\u73b0\u529f\u8017\u4e0e\u53ef\u89c6\u6027\u7684\u5e73\u8861\u3002\n<\/p>\n<h5>\n 1.5.1 \u4eae\u5ea6\u7b49\u7ea7\u6620\u5c04\u8868<br \/>\n<\/h5>\n<p>\n \u901a\u8fc7\u5b9e\u6d4b\u4e0d\u540c\u5bc4\u5b58\u5668\u7ec4\u5408\u4e0b\u7684\u5c4f\u5e55\u4eae\u5ea6&#xff08;\u5355\u4f4d&#xff1a;cd\/m\u00b2&#xff09;\u4e0e\u7535\u6d41\u6d88\u8017&#xff08;\u5355\u4f4d&#xff1a;mA&#xff09;&#xff0c;\u5efa\u7acb\u5982\u4e0b\u5de5\u7a0b\u6620\u5c04&#xff1a;\n<\/p>\n<table>\n<tr>\n    \u5bc4\u5b58\u56680xB1\u503c<\/p>\n<p>    \u5bc4\u5b58\u56680xB4\u503c<\/p>\n<p>    \u73af\u5883\u5149\u6761\u4ef6<\/p>\n<p>    \u4eae\u5ea6(cd\/m\u00b2)<\/p>\n<p>    \u5de5\u4f5c\u7535\u6d41(mA)<br \/>\n   <\/tr>\n<tbody>\n<tr>\n<td>\n<p>     0x02<\/p>\n<\/td>\n<td>\n<p>     0x20<\/p>\n<\/td>\n<td>\n    \u5ba4\u5185\u6697\u5149\n   <\/td>\n<td>\n    45\n   <\/td>\n<td>\n    2.1\n   <\/td>\n<\/tr>\n<tr>\n<td>\n<p>     0x05<\/p>\n<\/td>\n<td>\n<p>     0x30<\/p>\n<\/td>\n<td>\n    \u65e5\u5e38\u5ba4\u5185\n   <\/td>\n<td>\n    120\n   <\/td>\n<td>\n    3.8\n   <\/td>\n<\/tr>\n<tr>\n<td>\n<p>     0x08<\/p>\n<\/td>\n<td>\n<p>     0x40<\/p>\n<\/td>\n<td>\n    \u6237\u5916\u9634\u5929\n   <\/td>\n<td>\n    280\n   <\/td>\n<td>\n    6.5\n   <\/td>\n<\/tr>\n<tr>\n<td>\n<p>     0x0A<\/p>\n<\/td>\n<td>\n<p>     0x50<\/p>\n<\/td>\n<td>\n    \u6b63\u5348\u9633\u5149\n   <\/td>\n<td>\n    420\n   <\/td>\n<td>\n    9.2\n   <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\n \u8be5\u6620\u5c04\u8868\u88ab\u56fa\u5316\u4e3a\u67e5\u627e\u8868&#xff08;LUT&#xff09;&#xff0c;\u7531\u5149\u7167\u4f20\u611f\u5668&#xff08;\u5982BH1750&#xff09;\u8bfb\u6570\u5b9e\u65f6\u7d22\u5f15\u3002\u4f8b\u5982&#xff0c;\u5f53BH1750\u8fd4\u56de\u7167\u5ea6\u503c<\/p>\n<p>  1200 lux<\/p>\n<p> \u65f6&#xff0c;\u67e5\u8868\u5f97\u4eae\u5ea6\u7b49\u7ea73&#xff0c;MCU\u5373\u6267\u884c&#xff1a;\n<\/p>\n<p>LCD_WriteCommand(0xB1);<br \/>\nLCD_WriteData(0x08);<br \/>\nLCD_WriteCommand(0xB4);<br \/>\nLCD_WriteData(0x40);<\/p>\n<h5>\n 1.5.2 \u52a8\u6001\u80cc\u5149\u7ba1\u7406\u7b56\u7565<br \/>\n<\/h5>\n<p>\n \u4e3a\u5ef6\u957f\u7535\u6c60\u7eed\u822a&#xff0c;\u5f15\u5165\u4e09\u7ea7\u80cc\u5149\u7ba1\u7406&#xff1a;<\/p>\n<p> &#8211;<\/p>\n<p>  Level 0&#xff08;\u4f11\u7720&#xff09;<\/p>\n<p> &#xff1a;\u5c4f\u5e55\u5173\u95ed&#xff08;<\/p>\n<p>  0x28<\/p>\n<p> &#xff09;&#xff0c;\u80cc\u5149LED\u5b8c\u5168\u7184\u706d&#xff0c;\u7535\u6d41&lt;0.1mA<\/p>\n<p> &#8211;<\/p>\n<p>  Level 1&#xff08;\u5f85\u673a&#xff09;<\/p>\n<p> &#xff1a;\u5c4f\u5e55\u5f00\u542f\u4f46\u4eae\u5ea6\u6700\u4f4e&#xff08;<\/p>\n<p>  0x02\/0x20<\/p>\n<p> &#xff09;&#xff0c;\u4ec5\u7ef4\u6301\u7cfb\u7edf\u65f6\u949f\u663e\u793a&#xff0c;\u7535\u6d412.1mA<\/p>\n<p> &#8211;<\/p>\n<p>  Level 2&#xff08;\u6d3b\u8dc3&#xff09;<\/p>\n<p> &#xff1a;\u6839\u636e\u73af\u5883\u5149\u81ea\u9002\u5e94\u4eae\u5ea6&#xff0c;\u7535\u6d413.8~9.2mA\n<\/p>\n<p>\n \u8be5\u7b56\u7565\u4e0e\u52a0\u901f\u5ea6\u8ba1\u8054\u52a8&#xff1a;\u5f53\u68c0\u6d4b\u5230\u6301\u7eed\u9759\u6b62&gt;30\u79d2&#xff0c;\u81ea\u52a8\u964d\u7ea7\u81f3Level 1&#xff1b;\u5f53\u89e6\u6478\u4e2d\u65ad\u6216\u62ac\u624b\u52a8\u4f5c\u89e6\u53d1&#xff0c;\u7acb\u5373\u5347\u81f3Level 2\u3002\u5b9e\u6d4b\u5728\u5178\u578b\u4f7f\u7528\u573a\u666f\u4e0b&#xff08;\u65e5\u5747\u4eae\u5c4f2.3\u5c0f\u65f6&#xff09;&#xff0c;\u6574\u673a\u5f85\u673a\u65f6\u95f4\u4ece48\u5c0f\u65f6\u63d0\u5347\u81f3126\u5c0f\u65f6\u3002\n<\/p>\n<h4>\n 1.6 \u5e38\u89c1\u6545\u969c\u6392\u67e5\u4e0e\u8c03\u8bd5\u6280\u5de7<br \/>\n<\/h4>\n<p>\n \u5728LCD\u9a71\u52a8\u5f00\u53d1\u4e2d&#xff0c;\u4ee5\u4e0b\u95ee\u9898\u9ad8\u9891\u51fa\u73b0&#xff0c;\u5176\u6839\u672c\u539f\u56e0\u4e0e\u89e3\u51b3\u65b9\u6848\u5982\u4e0b&#xff1a;\n<\/p>\n<h5>\n 1.6.1 \u5c4f\u5e55\u5168\u767d\u6216\u5168\u9ed1<br \/>\n<\/h5>\n<ul>\n<li>\n<p>   \u5168\u767d<\/p>\n<p>  &#xff1a;\u901a\u5e38\u56e0<\/p>\n<p>   0x29<\/p>\n<p>  &#xff08;Display ON&#xff09;\u547d\u4ee4\u672a\u6b63\u786e\u53d1\u9001&#xff0c;\u6216<\/p>\n<p>   0x36<\/p>\n<p>  \u5bc4\u5b58\u5668\u914d\u7f6e\u9519\u8bef\u5bfc\u81f4GRAM\u5730\u5740\u6620\u5c04\u5931\u6548\u3002\u4f7f\u7528\u903b\u8f91\u5206\u6790\u4eea\u6293\u53d6SPI\u6ce2\u5f62&#xff0c;\u786e\u8ba4\u662f\u5426\u5728\u521d\u59cb\u5316\u672b\u5c3e\u53d1\u9001\u4e86<\/p>\n<p>   0x29<\/p>\n<p>  \u3002\n <\/li>\n<li>\n<p>   \u5168\u9ed1<\/p>\n<p>  &#xff1a;\u591a\u4e3a\u80cc\u5149\u7535\u8def\u6545\u969c\u3002\u68c0\u67e5LED&#043;\u4e0eLED-\u4e4b\u95f4\u7535\u538b&#xff0c;\u6b63\u5e38\u5e94\u4e3a18~22V\u3002\u82e5\u7535\u538b\u4e3a0&#xff0c;\u6d4b\u91cf<\/p>\n<p>   0xB1<\/p>\n<p>  \u5bc4\u5b58\u5668\u503c\u662f\u5426\u4e3a<\/p>\n<p>   0x00<\/p>\n<p>  &#xff08;\u7981\u7528\u5347\u538b&#xff09;\u3002\n <\/li>\n<\/ul>\n<h5>\n 1.6.2 \u56fe\u50cf\u9519\u4f4d\u6216\u989c\u8272\u5f02\u5e38<br \/>\n<\/h5>\n<ul>\n<li>\n<p>   \u6c34\u5e73\u9519\u4f4d<\/p>\n<p>  &#xff1a;\u68c0\u67e5<\/p>\n<p>   0x2A<\/p>\n<p>  \u5217\u5730\u5740\u8bbe\u7f6e\u662f\u5426\u8986\u76d6\u5168\u90e8128\u5217&#xff08;\u7ed3\u675f\u5730\u5740\u5e94\u4e3a<\/p>\n<p>   0x7F<\/p>\n<p>  &#xff09;\u3002\u82e5\u8bef\u8bbe\u4e3a<\/p>\n<p>   0x7E<\/p>\n<p>  &#xff0c;\u5219\u6700\u540e\u4e00\u5217\u4e22\u5931\u3002\n <\/li>\n<li>\n<p>   \u989c\u8272\u5931\u771f&#xff08;\u504f\u7ea2\/\u504f\u84dd&#xff09;<\/p>\n<p>  &#xff1a;<\/p>\n<p>   0x3A<\/p>\n<p>  \u5bc4\u5b58\u5668\u503c\u9519\u8bef\u3002\u4f8b\u5982\u5199\u5165<\/p>\n<p>   0x66<\/p>\n<p>  &#xff08;RGB666&#xff09;\u4f46\u786c\u4ef6\u4e3aRGB565&#xff0c;\u5c06\u5bfc\u81f4\u9ad8\u4f4d\u6570\u636e\u88ab\u622a\u65ad\u3002\n <\/li>\n<\/ul>\n<h5>\n 1.6.3 \u5237\u65b0\u95ea\u70c1<br \/>\n<\/h5>\n<ul>\n<li>\n<p>   \u6839\u672c\u539f\u56e0<\/p>\n<p>  &#xff1a;DMA\u4f20\u8f93\u672a\u4e0e\u663e\u793a\u5468\u671f\u540c\u6b65\u3002\u89e3\u51b3\u65b9\u6848\u662f\u5728\u6bcf\u6b21DMA\u4f20\u8f93\u5b8c\u6210\u4e2d\u65ad\u4e2d&#xff0c;\u63d2\u5165<\/p>\n<p>   HAL_Delay(1)<\/p>\n<p>  \u5f3a\u5236\u7b49\u5f851ms&#xff0c;\u786e\u4fdd\u50cf\u7d20\u6570\u636e\u7a33\u5b9a\u8f93\u51fa\u540e\u518d\u5207\u6362\u7f13\u51b2\u533a\u3002\n <\/li>\n<\/ul>\n<p>\n \u6211\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u66fe\u9047\u5230\u4e00\u6b21\u987d\u56fa\u7684\u95ea\u70c1\u95ee\u9898&#xff0c;\u6700\u7ec8\u5b9a\u4f4d\u4e3aSPI\u65f6\u949f\u6781\u6027&#xff08;CPOL&#xff09;\u4e0e\u76f8\u4f4d&#xff08;CPHA&#xff09;\u914d\u7f6e\u9519\u8bef\u3002ST7735S\u8981\u6c42<\/p>\n<p>  CPOL&#061;0, CPHA&#061;0<\/p>\n<p> &#xff08;\u7a7a\u95f2\u65f6\u949f\u4f4e\u7535\u5e73&#xff0c;\u91c7\u6837\u6cbf\u4e3a\u7b2c\u4e00\u4e2a\u4e0a\u5347\u6cbf&#xff09;&#xff0c;\u800cHAL\u5e93\u9ed8\u8ba4\u751f\u6210<\/p>\n<p>  CPOL&#061;0, CPHA&#061;1<\/p>\n<p> \u3002\u4fee\u6539<\/p>\n<p>  hspi2.Init.CLKPhase &#061; SPI_PHASE_1EDGE<\/p>\n<p> \u540e\u95ee\u9898\u5f7b\u5e95\u89e3\u51b3\u3002\u8fd9\u4e2a\u7ec6\u8282\u5728\u6570\u636e\u624b\u518c\u7b2c12\u9875\u7684\u65f6\u5e8f\u56fe\u4e2d\u6709\u660e\u786e\u6807\u6ce8&#xff0c;\u4f46\u6781\u6613\u88ab\u5ffd\u7565\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. 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