{"id":119557,"date":"2026-10-29T22:57:36","date_gmt":"2026-10-29T14:57:36","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/119557.html"},"modified":"2026-10-29T22:57:36","modified_gmt":"2026-10-29T14:57:36","slug":"spi%e9%80%9a%e4%bf%a1%e5%a4%96%e8%ae%be%e4%b8%8ew25q64-%ef%bc%88%e7%a1%ac%e4%bb%b6spi%ef%bc%89%ef%bc%88stm32%e6%a0%87%e5%87%86%e5%ba%93%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/119557.html","title":{"rendered":"SPI\u901a\u4fe1\u5916\u8bbe\u4e0eW25Q64 \uff08\u786c\u4ef6SPI\uff09\uff08STM32\u6807\u51c6\u5e93\u5b66\u4e60\u7b14\u8bb0\uff09"},"content":{"rendered":"

\u5728\u524d\u4e00\u7ae0\u8282\u4e2d，\u6211\u4eec\u6df1\u5165\u63a2\u8ba8\u4e86SPI\u901a\u4fe1\u534f\u8bae\u7684\u57fa\u672c\u539f\u7406，\u5e76\u901a\u8fc7\u8f6f\u4ef6\u6a21\u62df\u7684\u65b9\u5f0f\u5b9e\u73b0\u4e86\u4e0eW25Q64 Flash\u5b58\u50a8\u5668\u7684\u4ea4\u4e92\u3002\u8fd9\u4e00\u8fc7\u7a0b\u867d\u7136\u6709\u52a9\u4e8e\u7406\u89e3SPI\u65f6\u5e8f\u7684\u5e95\u5c42\u903b\u8f91，\u4f46\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u5b58\u5728\u5360\u7528CPU\u8d44\u6e90\u591a\u3001\u901a\u4fe1\u901f\u7387\u53d7\u9650\u7b49\u95ee\u9898\u3002\u968f\u7740\u7cfb\u7edf\u5bf9\u6570\u636e\u4f20\u8f93\u6548\u7387\u548c\u5b9e\u65f6\u6027\u8981\u6c42\u7684\u63d0\u5347，\u5355\u7eaf\u4f9d\u8d56GPIO\u4f4d\u64cd\u4f5c\u6765\u6a21\u62dfSPI\u5df2\u96be\u4ee5\u6ee1\u8db3\u9ad8\u6027\u80fd\u9700\u6c42\u3002<\/p>\n

\u672c\u7ae0\u5c06\u8f6c\u5411STM32\u5185\u7f6e\u7684\u786c\u4ef6SPI\u5916\u8bbe，\u5168\u9762\u89e3\u6790\u5982\u4f55\u5229\u7528\u5176\u4e13\u7528\u786c\u4ef6\u6a21\u5757\u5b9e\u73b0\u4e0eW25Q64\u7684\u9ad8\u6548\u901a\u4fe1\u3002\u76f8\u6bd4\u8f6f\u4ef6SPI，\u786c\u4ef6SPI\u4e0d\u4ec5\u663e\u8457\u964d\u4f4e\u4e3b\u63a7\u5904\u7406\u5668\u7684\u8d1f\u62c5，\u8fd8\u80fd\u652f\u6301\u66f4\u9ad8\u7684\u901a\u4fe1\u901f\u7387，\u786e\u4fdd\u6570\u636e\u7a33\u5b9a\u53ef\u9760\u5730\u4f20\u8f93\u3002\u901a\u8fc7\u914d\u7f6eSTM32\u7684SPI\u5916\u8bbe\u5bc4\u5b58\u5668\u3001\u8bbe\u7f6e\u5de5\u4f5c\u6a21\u5f0f（\u5982\u4e3b\/\u4ece\u6a21\u5f0f\u3001\u65f6\u949f\u6781\u6027\u4e0e\u76f8\u4f4d）\u3001\u5408\u7406\u7ba1\u7406\u7247\u9009\u4fe1\u53f7\u4ee5\u53ca\u7ed3\u5408\u4e2d\u65ad\u6216DMA\u673a\u5236，\u53ef\u4ee5\u6784\u5efa\u51fa\u66f4\u52a0\u9ad8\u6548\u3001\u7a33\u5b9a\u7684Flash\u8bfb\u5199\u7cfb\u7edf\u3002<\/p>\n

\u672c\u8282\u5185\u5bb9\u5c06\u4ee5\u6807\u51c6\u5e93\u4e3a\u57fa\u7840，\u8be6\u7ec6\u5c55\u793a\u786c\u4ef6SPI\u5916\u8bbe\u7684\u521d\u59cb\u5316\u6d41\u7a0b\u3001\u5173\u952e\u5bc4\u5b58\u5668\u914d\u7f6e\u65b9\u6cd5\u53ca\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u6ce8\u610f\u4e8b\u9879，\u5e2e\u52a9\u8bfb\u8005\u5b8c\u6210\u4ece\u201c\u624b\u52a8\u6a21\u62df\u201d\u5230\u201c\u786c\u4ef6\u9a71\u52a8\u201d\u7684\u601d\u7ef4\u8dc3\u8fc1，\u4e3a\u540e\u7eed\u590d\u6742\u5916\u8bbe\u96c6\u6210\u4e0e\u7cfb\u7edf\u4f18\u5316\u6253\u4e0b\u575a\u5b9e\u57fa\u7840\u3002<\/p>\n

\u5982\u679c\u89c9\u5f97\u6709\u6536\u83b7\u53ef\u4ee5\u4e3a\u6211\u7684\u6587\u7ae0\u70b9\u70b9\u5c0f\u8d5e，\u8fd9\u5c06\u6fc0\u52b1\u6211\u521b\u4f5c\u66f4\u597d\u7684\u5185\u5bb9！\u8c22\u8c22！<\/p>\n

\u00a0\u4e00\u3001SPI\u901a\u4fe1\u5916\u8bbe\u4e0eW25Q64\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0<\/h3>\n<\/p>\n

1.1 SPI\u5916\u8bbe\u7b80\u4ecb<\/h4>\n

STM32\u5185\u90e8\u96c6\u6210\u4e86\u786c\u4ef6SPI\u6536\u53d1\u7535\u8def，\u53ef\u4ee5\u7531\u786c\u4ef6\u81ea\u52a8\u6267\u884c\u65f6\u949f\u751f\u6210\u3001\u6570\u636e\u6536\u53d1\u7b49\u529f\u80fd，\u51cf\u8f7bCPU\u7684\u8d1f\u62c5<\/p>\n

\u53ef\u914d\u7f6e8\u4f4d\/16\u4f4d\u6570\u636e\u5e27\u3001\u9ad8\u4f4d\u5148\u884c\/\u4f4e\u4f4d\u5148\u884c<\/p>\n

\u65f6\u949f\u9891\u7387： fPCLK \/ (2, 4, 8, 16, 32, 64, 128, 256)<\/p>\n

\u652f\u6301\u591a\u4e3b\u673a\u6a21\u578b\u3001\u4e3b\u6216\u4ece\u64cd\u4f5c<\/p>\n

\u53ef\u7cbe\u7b80\u4e3a\u534a\u53cc\u5de5\/\u5355\u5de5\u901a\u4fe1<\/p>\n

\u652f\u6301DMA<\/p>\n

\u517c\u5bb9I2S\u534f\u8bae<\/p>\n

\n

STM32F103C8T6 \u786c\u4ef6SPI\u8d44\u6e90：SPI1\u3001SPI2<\/p>\n

\n

1.2 SPI\u6846\u56fe<\/h4>\n

\"\"<\/p>\n

\n

1.3 SPI\u57fa\u672c\u7ed3\u6784<\/h4>\n

\"\"<\/p>\n

<\/h4>\n

1.4 \u4e3b\u6a21\u5f0f\u5168\u53cc\u5de5\u8fde\u7eed\u4f20\u8f93<\/h4>\n

\"\"<\/p>\n

\n

1.5 \u975e\u8fde\u7eed\u4f20\u8f93<\/h4>\n

\"\"<\/p>\n<\/p>\n

1.6 \u8f6f\u4ef6\/\u786c\u4ef6\u6ce2\u5f62\u5bf9\u6bd4<\/h4>\n

\u8f6f\u4ef6：<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\n

\u786c\u4ef6：<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\n

1.7 \u5b9e\u4f8b\u4e00 11.2.1 \u786c\u4ef6SPI\u8bfb\u5199W25Q64<\/h4>\n

\u53ef\u80fd\u7528\u5230\u7684\u5e93\u51fd\u6570:<\/p>\n

\/\/\u6062\u590d\u7f3a\u7701\u914d\u7f6e\u3001<\/span>\u521d\u59cb\u5316<\/span>\u3001\u7ed3\u6784\u4f53\u53d8\u91cf\u521d\u59cb\u5316<\/span><\/p>\n

void SPI_I2S_DeInit(SPI_TypeDef* SPIx);<\/p>\n

void SPI_Init(SPI_TypeDef* SPIx, SPI_InitTypeDef* SPI_InitStruct);<\/p>\n

void SPI_StructInit(SPI_InitTypeDef* SPI_InitStruct);<\/p>\n

\n

\/\/SPI_Cmd\u5916\u8bbe\u4f7f\u80fd<\/span><\/p>\n

void SPI_Cmd(SPI_TypeDef* SPIx, FunctionalState NewState);<\/p>\n

\n

\/\/SPI_I2S_ITConfig\u4e2d\u65ad\u4f7f\u80fd\u3001SPI_I2S_DMACmd DMA\u4f7f\u80fd<\/span><\/p>\n

void SPI_I2S_ITConfig(SPI_TypeDef* SPIx, uint8_t SPI_I2S_IT, FunctionalState NewState);<\/p>\n

void SPI_I2S_DMACmd(SPI_TypeDef* SPIx, uint16_t SPI_I2S_DMAReq, FunctionalState NewState);<\/p>\n

\n

\/\/SPI_I2S_SendData \u53d1\u9001\u6570\u636e（\u5199DR\u6570\u636e\u5bc4\u5b58\u5668）\u3001uint16_t SPI_I2S_ReceiveData \u8bfb\u53d6\u6570\u636e（\u8bfbDR\u6570\u636e\u5bc4\u5b58\u5668）<\/span><\/p>\n

void SPI_I2S_SendData(SPI_TypeDef* SPIx, uint16_t Data);<\/p>\n

uint16_t SPI_I2S_ReceiveData(SPI_TypeDef* SPIx);<\/p>\n

\n

\/\/\u83b7\u53d6\u6807\u5fd7\u4f4d\u548c\u6e05\u9664\u6807\u5fd7\u4f4d<\/span><\/p>\n

\u4e3b\u8981\u7528SPI_I2S_GetFlagStatus\u6765\u83b7\u53d6TXE\u548cRXNE\u6807\u5fd7\u4f4d\u7684\u72b6\u6001<\/span><\/p>\n

FlagStatus SPI_I2S_GetFlagStatus(SPI_TypeDef* SPIx, uint16_t SPI_I2S_FLAG);<\/p>\n

void SPI_I2S_ClearFlag(SPI_TypeDef* SPIx, uint16_t SPI_I2S_FLAG);<\/p>\n

ITStatus SPI_I2S_GetITStatus(SPI_TypeDef* SPIx, uint8_t SPI_I2S_IT);<\/p>\n

void SPI_I2S_ClearITPendingBit(SPI_TypeDef* SPIx, uint8_t SPI_I2S_IT);<\/p>\n

\n

\n

SPI\u521d\u59cb\u5316\u7684\u6d41\u7a0b<\/span><\/h5>\n

\u7b2c\u4e00\u6b65，\u5f00\u542f\u65f6\u949f，\u5f00\u542fSPI\u548cGPIO\u7684\u65f6\u949f；<\/p>\n

\u7b2c\u4e8c\u6b65，\u521d\u59cb\u5316GPIO\u53e3，\u5176\u4e2dSCK\u548cMOSI，\u662f\u7531\u786c\u4ef6\u5916\u8bbe\u63a7\u5236\u7684\u8f93\u51fa\u4fe1\u53f7，\u6240\u4ee5\u914d\u7f6e\u4e3a\u590d\u7528\u63a8\u633d\u8f93\u51fa\u3002MISO，\u662f\u786c\u4ef6\u5916\u8bbe\u7684\u8f93\u5165\u4fe1\u53f7，\u53ef\u4ee5\u914d\u7f6e\u4e3a\u4e0a\u62c9\u8f93\u5165\u3002SS\u5f15\u811a，SS\u662f\u8f6f\u4ef6\u63a7\u5236\u7684\u8f93\u51fa\u4fe1\u53f7，\u6240\u4ee5\u914d\u7f6e\u4e3a\u901a\u7528\u63a8\u633d\u8f93\u51fa，\u8fd9\u5c31\u662fGPIO\u53e3\u7684\u521d\u59cb\u5316\u914d\u7f6e；<\/p>\n

\u7b2c\u4e09\u6b65，\u914d\u7f6eSPI\u5916\u8bbe，\u8fd9\u4e00\u5757，\u4f7f\u7528\u4e00\u4e2a\u7ed3\u6784\u4f53\u9009\u53c2\u6570\u5373\u53ef，\u8c03\u7528\u4e00\u4e0bSPI_Init,\u8fd9\u91cc\u9762\u7684\u5404\u79cd\u53c2\u6570，\u6bd4\u5982，8\u4f4d\/16\u4f4d\u6570\u636e\u5e27\u3001\u9ad8\u4f4d\u5148\u884c\/\u4f4e\u4f4d\u5148\u884c，SPI\u6a21\u5f0f\u51e0\u3001\u4e3b\u673a\u8fd8\u662f\u4ece\u673a\u7b49\u7b49；<\/p>\n

\u7b2c\u56db\u6b65，\u5f00\u5173\u63a7\u5236，\u8c03\u7528SPl_Cmd,\u7ed9SPl\u4f7f\u80fd\u5373\u53ef\u3002<\/p>\n

\n

\u4ea4\u6362\u4e00\u4e2a\u5b57\u8282（\u6a21\u5f0f0）\u7684\u7ed3\u6784\u6846\u56fe<\/p>\n

CPOL=0：\u7a7a\u95f2\u72b6\u6001\u65f6，SCK\u4e3a\u4f4e\u7535\u5e73<\/p>\n

CPHA=0：SCK\u7b2c\u4e00\u4e2a\u8fb9\u6cbf\u79fb\u5165\u6570\u636e，\u7b2c\u4e8c\u4e2a\u8fb9\u6cbf\u79fb\u51fa\u6570\u636e<\/p>\n

\"\"<\/p>\n

\n

\u975e\u8fde\u7eed\u4f20\u8f93\u7684\u7ed3\u6784\u6846\u56fe<\/p>\n

\"\"<\/p>\n

\n

\u91cd\u8981\u7684\u6807\u5fd7\u4f4d\u5728stm32\u6570\u636e\u624b\u518c\u91cc\u7684\u63cf\u8ff0：<\/p>\n

\u53d1\u9001\u7f13\u51b2\u5668\u7a7a\u95f2\u6807\u5fd7(TXE) <\/span><\/p>\n

\u6b64\u6807\u5fd7\u4e3a\u20191\u2019\u65f6\u8868\u660e\u53d1\u9001\u7f13\u51b2\u5668\u4e3a\u7a7a，\u53ef\u4ee5\u5199\u4e0b\u4e00\u4e2a\u5f85\u53d1\u9001\u7684\u6570\u636e\u8fdb\u5165\u7f13\u51b2\u5668\u4e2d\u3002\u5f53\u5199\u5165SPI_DR \u65f6，TXE\u6807\u5fd7\u88ab\u6e05\u9664\u3002 <\/p>\n

\u63a5\u6536\u7f13\u51b2\u5668\u975e\u7a7a<\/span>(RXNE) <\/span><\/p>\n

\u6b64\u6807\u5fd7\u4e3a\u20191\u2019\u65f6\u8868\u660e\u5728\u63a5\u6536\u7f13\u51b2\u5668\u4e2d\u5305\u542b\u6709\u6548\u7684\u63a5\u6536\u6570\u636e\u3002\u8bfbSPI\u6570\u636e\u5bc4\u5b58\u5668\u53ef\u4ee5\u6e05\u9664\u6b64\u6807\u5fd7\u3002<\/p>\n

\u6839\u636e\u4ee5\u4e0a\u63cf\u8ff0，\u5728\u4f7f\u7528\u786c\u4ef6SPI\u7684SPI_I2S_SendData\u548cSPI_I2S_ReceiveData\u51fd\u6570\u65f6，\u6b64\u65f6\u786c\u4ef6\u4f1a\u81ea\u52a8\u5e2e\u6211\u4eec\u628a\u4e4b\u524d\u7f6e\u4e00TXE\/<\/span>RXNE<\/span>\u6807\u5fd7\u4f4d\u81ea\u52a8\u6e05\u96f6，<\/span>\u4e0d\u9700\u8981\u6211\u4eec\u5728\u8f6f\u4ef6\u7a0b\u5e8f\u4e2d\u624b\u52a8\u6e05\u9664\u6807\u5fd7\u4f4d<\/p>\n<\/p>\n

\n

MySPI<\/span>.c<\/span>\u2193<\/span><\/p>\n

—————————–<\/span><\/p>\n

#include "stm32f10x.h" \/\/ Device header
\n\/\u5f15\u811a\u914d\u7f6e\u5c42\/
\n\/**
\n\u51fd \u6570：SPI\u5199SS\u5f15\u811a\u7535\u5e73
\n\u53c2 \u6570：BitValue \u534f\u8bae\u5c42\u4f20\u5165\u7684\u5f53\u524d\u9700\u8981\u5199\u5165SS\u7684\u7535\u5e73，\u8303\u56f40~1
\n\u8fd4 \u56de \u503c：\u65e0
\n\u6ce8\u610f\u4e8b\u9879：\u6b64\u51fd\u6570\u9700\u8981\u7528\u6237\u5b9e\u73b0\u5185\u5bb9，\u5f53BitValue\u4e3a0\u65f6，\u9700\u8981\u7f6eSS\u4e3a\u4f4e\u7535\u5e73，\u5f53BitValue\u4e3a1\u65f6，\u9700\u8981\u7f6eSS\u4e3a\u9ad8\u7535\u5e73
\n*\/
\nvoid MySPI_W_SS(uint8_t BitValue)
\n{
\nGPIO_WriteBit(GPIOA,GPIO_Pin_4,(BitAction)BitValue);\/\/\u6839\u636eBitValue，\u8bbe\u7f6eSS\u5f15\u811a\u7684\u7535\u5e73
\n}
\n\/**
\n\u51fd \u6570：SPI\u521d\u59cb\u5316
\n\u53c2 \u6570：\u65e0
\n\u8fd4 \u56de \u503c：\u65e0
\n\u6ce8\u610f\u4e8b\u9879：\u6b64\u51fd\u6570\u9700\u8981\u7528\u6237\u5b9e\u73b0\u5185\u5bb9，\u5b9e\u73b0SS\u3001SCK\u3001MOSI\u548cMISO\u5f15\u811a\u7684\u521d\u59cb\u5316
\n*\/
\nvoid MySPI_Init(void)
\n{
\n\/\u5f00\u542f\u65f6\u949f\/
\nRCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);\/\/\u5f00\u542fGPIOA\u7684\u65f6\u949f
\nRCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1,ENABLE);\/\/\u5f00\u542fSPI1\u7684\u65f6\u949f
\n\/GPIO\u521d\u59cb\u5316\/
\nGPIO_InitTypeDef GPIO_InitStructure;
\nGPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
\nGPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
\nGPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
\nGPIO_Init(GPIOA,&GPIO_InitStructure);\/\/\u5c06PA4\u5f15\u811a\u521d\u59cb\u5316\u4e3a\u63a8\u633d\u8f93\u51fa
\nGPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
\nGPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_7;
\nGPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
\nGPIO_Init(GPIOA,&GPIO_InitStructure);\/\/\u5c06PA5\u548cPA7\u5f15\u811a\u521d\u59cb\u5316\u4e3a\u590d\u7528\u63a8\u633d\u8f93\u51fa
\nGPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
\nGPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
\nGPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
\nGPIO_Init(GPIOA,&GPIO_InitStructure);\/\/\u5c06PA6\u5f15\u811a\u521d\u59cb\u5316\u4e3a\u4e0a\u62c9\u8f93\u5165
\n\/SPI\u521d\u59cb\u5316\/
\nSPI_InitTypeDef SPI_InitStructure;\/\/\u5b9a\u4e49\u7ed3\u6784\u4f53\u53d8\u91cf
\nSPI_InitStructure.SPI_Mode = SPI_Mode_Master;\/\/\u6a21\u5f0f，\u9009\u62e9\u4e3aSPI\u4e3b\u6a21\u5f0f
\nSPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;\/\/\u65b9\u5411，\u9009\u62e92\u7ebf\u5168\u53cc\u5de5
\nSPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;\/\/\u6570\u636e\u5bbd\u5ea6，\u9009\u62e9\u4e3a8\u4f4d
\nSPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;\/\/\u5148\u884c\u4f4d，\u9009\u62e9\u9ad8\u4f4d\u5148\u884c
\nSPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_128;\/\/\u6ce2\u7279\u7387\u5206\u9891，\u9009\u62e9128\u5206\u9891
\nSPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;\/\/SPI\u6781\u6027，\u9009\u62e9\u4f4e\u6781\u6027
\nSPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;\/\/SPI\u76f8\u4f4d，\u9009\u62e9\u7b2c\u4e00\u4e2a\u65f6\u949f\u8fb9\u6cbf\u91c7\u6837，\u6781\u6027\u548c\u76f8\u4f4d\u51b3\u5b9a\u9009\u62e9SPI\u6a21\u5f0f0
\nSPI_InitStructure.SPI_NSS = SPI_NSS_Soft;\/\/NSS，\u9009\u62e9\u7531\u8f6f\u4ef6\u63a7\u5236
\nSPI_InitStructure.SPI_CRCPolynomial = 7; \/\/CRC\u591a\u9879\u5f0f，\u6682\u65f6\u7528\u4e0d\u5230，\u7ed9\u9ed8\u8ba4\u503c7
\nSPI_Init(SPI1,&SPI_InitStructure); \/\/\u5c06\u7ed3\u6784\u4f53\u53d8\u91cf\u4ea4\u7ed9SPI_Init，\u914d\u7f6eSPI1
\n\/SPI\u4f7f\u80fd\/
\nSPI_Cmd(SPI1,ENABLE);\/\/\u4f7f\u80fdSPI1，\u5f00\u59cb\u8fd0\u884c
\n\/\u8bbe\u7f6e\u9ed8\u8ba4\u7535\u5e73\/
\nMySPI_W_SS(1); \/\/SS\u9ed8\u8ba4\u9ad8\u7535\u5e73
\n}
\n\/\u534f\u8bae\u5c42\/
\n\/**
\n\u51fd \u6570：SPI\u8d77\u59cb
\n\u53c2 \u6570：\u65e0
\n\u8fd4 \u56de \u503c：\u65e0
\n*\/
\nvoid MySPI_Start(void)
\n{
\nMySPI_W_SS(0);\/\/\u62c9\u4f4eSS，\u5f00\u59cb\u65f6\u5e8f
\n}
\n\/**
\n\u51fd \u6570：SPI\u7ec8\u6b62
\n\u53c2 \u6570：\u65e0
\n\u8fd4 \u56de \u503c：\u65e0
\n*\/
\nvoid MySPI_Stop(void)
\n{
\nMySPI_W_SS(1);\/\/\u62c9\u9ad8SS，\u7ec8\u6b62\u65f6\u5e8f
\n}
\n\/**
\n\u51fd \u6570：SPI\u4ea4\u6362\u4f20\u8f93\u4e00\u4e2a\u5b57\u8282，\u4f7f\u7528SPI\u6a21\u5f0f0
\n\u53c2 \u6570：ByteSend \u8981\u53d1\u9001\u7684\u4e00\u4e2a\u5b57\u8282
\n\u8fd4 \u56de \u503c：\u63a5\u6536\u7684\u4e00\u4e2a\u5b57\u8282
\n*\/
\nuint8_t MySPI_SwapByte(uint8_t ByteSend)
\n{
\nwhile ( SPI_I2S_GetFlagStatus(SPI1,SPI_I2S_FLAG_TXE) != SET );\/\/\u7b49\u5f85\u53d1\u9001\u6570\u636e\u5bc4\u5b58\u5668\u7a7a
\nSPI_I2S_SendData(SPI1,ByteSend);\/\/\u5199\u5165\u6570\u636e\u5230\u53d1\u9001\u6570\u636e\u5bc4\u5b58\u5668，\u5f00\u59cb\u4ea7\u751f\u65f6\u5e8f
\nwhile ( SPI_I2S_GetFlagStatus(SPI1,SPI_I2S_FLAG_RXNE) != SET );\/\/\u7b49\u5f85\u63a5\u6536\u6570\u636e\u5bc4\u5b58\u5668\u975e\u7a7a
\nreturn SPI_I2S_ReceiveData(SPI1);\/\/\u8bfb\u53d6\u63a5\u6536\u5230\u7684\u6570\u636e\u5e76\u8fd4\u56de
\n}<\/p>\n

—————————–<\/span><\/p>\n

\n

W25Q64_Ins.h<\/span>\u2193<\/span><\/p>\n

—————————–<\/span><\/p>\n

#ifndef __W25Q64_INS_H
\n#define __W25Q64_INS_H
\n#define W25Q64_WRITE_ENABLE0x06
\n#define W25Q64_WRITE_DISABLE0x04
\n#define W25Q64_READ_STATUS_REGISTER_1 0x05
\n#define W25Q64_READ_STATUS_REGISTER_2 0x35
\n#define W25Q64_WRITE_STATUS_REGISTER 0x01
\n#define W25Q64_PAGE_PROGRAM0x02
\n#define W25Q64_QUAD_PAGE_PROGRAM0x32
\n#define W25Q64_BLOCK_ERASE_64KB0xD8
\n#define W25Q64_BLOCK_ERASE_32KB0x52
\n#define W25Q64_SECTOR_ERASE_4KB0x20
\n#define W25Q64_CHIP_ERASE0xC7
\n#define W25Q64_ERASE_SUSPEND0x75
\n#define W25Q64_ERASE_RESUME0x7A
\n#define W25Q64_POWER_DOWN0xB9
\n#define W25Q64_HIGH_PERFORMANCE_MODE 0xA3
\n#define W25Q64_CONTINUOUS_READ_MODE_RESET 0xFF
\n#define W25Q64_RELEASE_POWER_DOWN_OR_HPM 0xAB
\n#define W25Q64_MANUFACTURER0x90
\n#define W25Q64_READ_UNIQUE0x4B
\n#define W25Q64_JEDEC_ID0x9F
\n#define W25Q64_READ_DATA0x03
\n#define W25Q64_FAST_READ0x0B
\n#define W25Q64_FAST_READ_DUAL_OUTPUT 0x3B
\n#define W25Q64_FAST_READ_DUAL_IO0xBB
\n#define W25Q64_FAST_READ_QUAD_OUTPUT 0x6B
\n#define W25Q64_FAST_READ_QUAD_IO0xEB
\n#define W25Q64_OCTAL_WORD_READ_QUAD_IO 0xE3
\n#define W25Q64_DUMMY_BYTE0xFF
\n#endif<\/p>\n

—————————–<\/span><\/p>\n

W25Q64.<\/span>c<\/span>\u2193<\/span><\/p>\n

—————————–<\/span><\/p>\n

#include "stm32f10x.h" \/\/ Device header
\n#include "MySPI.h"
\n#include "W25Q64_Ins.h"
\n\/**
\n\u51fd \u6570：W25Q64\u521d\u59cb\u5316
\n\u53c2 \u6570：\u65e0
\n\u8fd4 \u56de \u503c：\u65e0
\n*\/
\nvoid W25Q64_Init(void)
\n{
\nMySPI_Init();\/\/\u5148\u521d\u59cb\u5316\u5e95\u5c42\u7684SPI
\n}
\n\/**
\n\u51fd \u6570：W25Q64\u8bfb\u53d6ID\u53f7
\n\u53c2 \u6570：MID \u5de5\u5382ID，\u4f7f\u7528\u8f93\u51fa\u53c2\u6570\u7684\u5f62\u5f0f\u8fd4\u56de
\n\u53c2 \u6570：DID \u8bbe\u5907ID，\u4f7f\u7528\u8f93\u51fa\u53c2\u6570\u7684\u5f62\u5f0f\u8fd4\u56de
\n\u8fd4 \u56de \u503c：\u65e0
\n*\/
\nvoid W25Q64_ReadID(uint8_t *MID,uint16_t *DID)
\n{
\nMySPI_Start();\/\/SPI\u8d77\u59cb
\nMySPI_SwapByte(W25Q64_JEDEC_ID);\/\/\u4ea4\u6362\u53d1\u9001\u8bfb\u53d6ID\u7684\u6307\u4ee4
\n*MID = MySPI_SwapByte(W25Q64_DUMMY_BYTE);\/\/\u4ea4\u6362\u63a5\u6536MID，\u901a\u8fc7\u8f93\u51fa\u53c2\u6570\u8fd4\u56de
\n*DID = MySPI_SwapByte(W25Q64_DUMMY_BYTE);\/\/\u4ea4\u6362\u63a5\u6536DID\u9ad88\u4f4d
\n*DID <<= 8;\/\/\u9ad88\u4f4d\u79fb\u5230\u9ad8\u4f4d
\n*DID |= MySPI_SwapByte(W25Q64_DUMMY_BYTE);\/\/\u6216\u4e0a\u4ea4\u6362\u63a5\u6536DID\u7684\u4f4e8\u4f4d，\u901a\u8fc7\u8f93\u51fa\u53c2\u6570\u8fd4\u56de
\nMySPI_Stop();\/\/SPI\u7ec8\u6b62
\n}
\n\/**
\n\u51fd \u6570：W25Q64\u5199\u4f7f\u80fd
\n\u53c2 \u6570：\u65e0
\n\u8fd4 \u56de \u503c：\u65e0
\n*\/
\nvoid W25Q64_WriteEnable(void)
\n{
\nMySPI_Start();\/\/SPI\u8d77\u59cb
\nMySPI_SwapByte(W25Q64_WRITE_ENABLE);\/\/\u4ea4\u6362\u53d1\u9001\u5199\u4f7f\u80fd\u7684\u6307\u4ee4
\nMySPI_Stop();\/\/SPI\u7ec8\u6b62
\n}
\n\/**
\n\u51fd \u6570：W25Q64\u7b49\u5f85\u5fd9
\n\u53c2 \u6570：\u65e0
\n\u8fd4 \u56de \u503c：\u65e0
\n*\/
\nvoid W25Q64_WaitBusy(void)
\n{
\nuint32_t Timeout;
\nMySPI_Start();\/\/SPI\u8d77\u59cb
\nMySPI_SwapByte(W25Q64_READ_STATUS_REGISTER_1);\/\/\u4ea4\u6362\u53d1\u9001\u8bfb\u72b6\u6001\u5bc4\u5b58\u56681\u7684\u6307\u4ee4
\nTimeout = 100000;\/\/\u7ed9\u5b9a\u8d85\u65f6\u8ba1\u6570\u65f6\u95f4
\nwhile ( (MySPI_SwapByte(W25Q64_DUMMY_BYTE) & 0x01) == 0x01 )\/\/\u5faa\u73af\u7b49\u5f85\u5fd9\u6807\u5fd7\u4f4d
\n{
\nTimeout –;\/\/\u7b49\u5f85\u65f6，\u8ba1\u6570\u503c\u81ea\u51cf
\nif(Timeout == 0)\/\/\u81ea\u51cf\u52300\u540e，\u7b49\u5f85\u8d85\u65f6
\n{
\n\/\u8d85\u65f6\u7684\u9519\u8bef\u5904\u7406\u4ee3\u7801，\u53ef\u4ee5\u6dfb\u52a0\u5230\u6b64\u5904\/
\nbreak;\/\/\u8df3\u51fa\u7b49\u5f85，\u4e0d\u7b49\u4e86
\n}
\n}
\nMySPI_Stop();\/\/SPI\u7ec8\u6b62
\n}
\n\/**
\n\u51fd \u6570：W25Q64\u9875\u7f16\u7a0b
\n\u53c2 \u6570：Address \u9875\u7f16\u7a0b\u7684\u8d77\u59cb\u5730\u5740，\u8303\u56f4：0x000000~0x7FFFFF
\n\u53c2 \u6570：DataArray\u7528\u4e8e\u5199\u5165\u6570\u636e\u7684\u6570\u7ec4
\n\u53c2 \u6570：Count \u8981\u5199\u5165\u6570\u636e\u7684\u6570\u91cf，\u8303\u56f4：0~256
\n\u8fd4 \u56de \u503c：\u65e0
\n\u6ce8\u610f\u4e8b\u9879：\u5199\u5165\u7684\u5730\u5740\u8303\u56f4\u4e0d\u80fd\u8de8\u9875
\n*\/
\nvoid W25Q64_PageProgram(uint32_t Address,uint8_t *DataArray,uint16_t Count)
\n{
\nW25Q64_WriteEnable();\/\/\u5199\u4f7f\u80fd
\nuint16_t i;
\nMySPI_Start();\/\/SPI\u8d77\u59cb
\nMySPI_SwapByte(W25Q64_PAGE_PROGRAM);\/\/\u4ea4\u6362\u53d1\u9001\u9875\u7f16\u7a0b\u7684\u6307\u4ee4
\nMySPI_SwapByte(Address >> 16); \/\/\u4ea4\u6362\u53d1\u9001\u5730\u574023~16\u4f4d
\nMySPI_SwapByte(Address >> 8); \/\/\u4ea4\u6362\u53d1\u9001\u5730\u574015~8\u4f4d
\nMySPI_SwapByte(Address);\/\/\u4ea4\u6362\u53d1\u9001\u5730\u57407~0\u4f4d
\nfor(i=0;i<Count;i++) \/\/\u5faa\u73afCount\u6b21
\n{
\nMySPI_SwapByte(DataArray[i]);\/\/\u4f9d\u6b21\u5728\u8d77\u59cb\u5730\u5740\u540e\u5199\u5165\u6570\u636e
\n}
\nMySPI_Stop();\/\/SPI\u7ec8\u6b62
\nW25Q64_WaitBusy();\/\/\u7b49\u5f85\u5fd9
\n}
\n\/**
\n\u51fd \u6570：W25Q64\u6247\u533a\u64e6\u9664（4KB）
\n\u53c2 \u6570：Address \u6307\u5b9a\u6247\u533a\u7684\u5730\u5740，\u8303\u56f4：0x000000~0x7FFFFF
\n\u8fd4 \u56de \u503c：\u65e0
\n*\/
\nvoid W25Q64_SectorErase(uint32_t Address)
\n{
\nW25Q64_WriteEnable();\/\/\u5199\u4f7f\u80fd
\nMySPI_Start();\/\/SPI\u8d77\u59cb
\nMySPI_SwapByte(W25Q64_SECTOR_ERASE_4KB);\/\/\u4ea4\u6362\u53d1\u9001\u6247\u533a\u64e6\u9664\u7684\u6307\u4ee4
\nMySPI_SwapByte(Address >> 16); \/\/\u4ea4\u6362\u53d1\u9001\u5730\u574023~16\u4f4d
\nMySPI_SwapByte(Address >> 8); \/\/\u4ea4\u6362\u53d1\u9001\u5730\u574015~8\u4f4d
\nMySPI_SwapByte(Address); \/\/\u4ea4\u6362\u53d1\u9001\u5730\u57407~0\u4f4d
\nMySPI_Stop();\/\/SPI\u7ec8\u6b62
\nW25Q64_WaitBusy();\/\/\u7b49\u5f85\u5fd9
\n}
\n\/**
\n\u51fd \u6570：W25Q64\u8bfb\u53d6\u6570\u636e
\n\u53c2 \u6570：Address \u8bfb\u53d6\u6570\u636e\u7684\u8d77\u59cb\u5730\u5740，\u8303\u56f4：0x000000~0x7FFFFF
\n\u53c2 \u6570：DataArray \u7528\u4e8e\u63a5\u6536\u8bfb\u53d6\u6570\u636e\u7684\u6570\u7ec4，\u901a\u8fc7\u8f93\u51fa\u53c2\u6570\u8fd4\u56de
\n\u53c2 \u6570：Count \u8981\u8bfb\u53d6\u6570\u636e\u7684\u6570\u91cf，\u8303\u56f4：0~0x800000
\n\u8fd4 \u56de \u503c：\u65e0
\n*\/
\nvoid W25Q64_ReadData(uint32_t Address,uint8_t *DataArray,uint32_t Count)
\n{
\nuint32_t i;
\nMySPI_Start();\/\/SPI\u8d77\u59cb
\nMySPI_SwapByte(W25Q64_READ_DATA);\/\/\u4ea4\u6362\u53d1\u9001\u8bfb\u53d6\u6570\u636e\u7684\u6307\u4ee4
\nMySPI_SwapByte(Address >> 16); \/\/\u4ea4\u6362\u53d1\u9001\u5730\u574023~16\u4f4d
\nMySPI_SwapByte(Address >> 8); \/\/\u4ea4\u6362\u53d1\u9001\u5730\u574015~8\u4f4d
\nMySPI_SwapByte(Address); \/\/\u4ea4\u6362\u53d1\u9001\u5730\u57407~0\u4f4d
\nfor(i=0;i<Count;i++) \/\/\u5faa\u73afCount\u6b21
\n{
\nDataArray[i] = MySPI_SwapByte(W25Q64_DUMMY_BYTE);\/\/\u4f9d\u6b21\u5728\u8d77\u59cb\u5730\u5740\u540e\u8bfb\u53d6\u6570\u636e
\n}
\nMySPI_Stop();\/\/SPI\u7ec8\u6b62
\n}<\/p>\n

—————————–<\/span><\/p>\n

\n

main.c\u2193<\/p>\n

—————————–<\/p>\n

#include "stm32f10x.h" \/\/ Device header
\n#include "Delay.h"
\n#include "OLED.h"
\n#include "W25Q64.h"
\nuint8_t MID;\/\/\u5b9a\u4e49\u7528\u4e8e\u5b58\u653eMID\u53f7\u7684\u53d8\u91cf
\nuint16_t DID;\/\/\u5b9a\u4e49\u7528\u4e8e\u5b58\u653eDID\u53f7\u7684\u53d8\u91cf
\nuint8_t ArrayWrite[] = {0xFF,0xFE,0xFD,0xFC};\/\/\u5b9a\u4e49\u8981\u5199\u5165\u6570\u636e\u7684\u6d4b\u8bd5\u6570\u7ec4
\nuint8_t ArrayRead[4] = {0x00,0x00,0x00,0x00};\/\/\u5b9a\u4e49\u8981\u8bfb\u53d6\u6570\u636e\u7684\u6d4b\u8bd5\u6570\u7ec4
\nint main(void)
\n{
\n\/\u6a21\u5757\u521d\u59cb\u5316\/
\nOLED_Init();\/\/OLED\u521d\u59cb\u5316
\nW25Q64_Init();\/\/W25Q64\u521d\u59cb\u5316
\n\/*\u663e\u793a\u9759\u6001\u5b57\u7b26\u4e32*\/
\nOLED_ShowString(1,1,"MID: DID: ");
\nOLED_ShowString(2,1,"W:");
\nOLED_ShowString(3,1,"R:");<\/p>\n

\/*\u663e\u793aID\u53f7*\/
\nW25Q64_ReadID(&amp;MID,&amp;DID);\/\/\u83b7\u53d6W25Q64\u7684ID\u53f7
\nOLED_ShowHexNum(1,5,MID,2);\/\/\u663e\u793aMID
\nOLED_ShowHexNum(1,12,DID,4);\/\/\u663e\u793aDID<\/p>\n

\/*W25Q64\u529f\u80fd\u51fd\u6570\u6d4b\u8bd5*\/
\nW25Q64_SectorErase(0x000000);\/\/\u6247\u533a\u64e6\u9664
\nW25Q64_PageProgram(0x000000,ArrayWrite,4);\/\/\u5c06\u5199\u5165\u6570\u636e\u7684\u6d4b\u8bd5\u6570\u7ec4\u5199\u5165\u5230W25Q64\u4e2d<\/p>\n

W25Q64_ReadData(0x000000,ArrayRead,4);\/\/\u8bfb\u53d6\u521a\u5199\u5165\u7684\u6d4b\u8bd5\u6570\u636e\u5230\u8bfb\u53d6\u6570\u636e\u7684\u6d4b\u8bd5\u6570\u7ec4\u4e2d<\/p>\n

\/*\u663e\u793a\u6570\u636e*\/
\nOLED_ShowHexNum(2,3,ArrayWrite[0],2);\/\/\u663e\u793a\u5199\u5165\u6570\u636e\u7684\u6d4b\u8bd5\u6570\u7ec4
\nOLED_ShowHexNum(2,6,ArrayWrite[1],2);\/\/
\nOLED_ShowHexNum(2,9,ArrayWrite[2],2);\/\/
\nOLED_ShowHexNum(2,12,ArrayWrite[3],2);\/\/<\/p>\n

OLED_ShowHexNum(3,3,ArrayRead[0],2);\/\/\u663e\u793a\u8bfb\u53d6\u6570\u636e\u7684\u6d4b\u8bd5\u6570\u7ec4
\nOLED_ShowHexNum(3,6,ArrayRead[1],2);\/\/
\nOLED_ShowHexNum(3,9,ArrayRead[2],2);\/\/
\nOLED_ShowHexNum(3,12,ArrayRead[3],2);\/\/<\/p>\n

while(1)
\n{<\/p>\n

}
\n}<\/p>\n

—————————–<\/p>\n

\"\"<\/p>\n<\/p>\n

\u4e8c\u3001\u603b\u7ed3<\/h3>\n<\/p>\n

\u672c\u6587\u56f4\u7ed5 STM32 \u7684\u786c\u4ef6 SPI \u5916\u8bbe\u4e0e W25Q64 Flash \u82af\u7247\u5c55\u5f00，\u4ece\u5916\u8bbe\u539f\u7406\u5230\u4ee3\u7801\u843d\u5730\u5b8c\u6574\u8d70\u4e86\u4e00\u904d\u6d41\u7a0b，\u6838\u5fc3\u5185\u5bb9\u53ef\u4ee5\u5f52\u7eb3\u4e3a\u4ee5\u4e0b\u51e0\u70b9：<\/p>\n

    \n
  • SPI \u5916\u8bbe\u7279\u6027：STM32 \u5185\u90e8\u96c6\u6210\u786c\u4ef6 SPI \u6536\u53d1\u7535\u8def，\u53ef\u81ea\u52a8\u5b8c\u6210\u65f6\u949f\u751f\u6210\u4e0e\u6570\u636e\u6536\u53d1，\u652f\u6301 8 \u4f4d\/16 \u4f4d\u6570\u636e\u5e27\u3001\u9ad8\u4f4d\/\u4f4e\u4f4d\u5148\u884c\u3001\u591a\u79cd\u65f6\u949f\u5206\u9891\u3001\u591a\u4e3b\u673a\u6a21\u578b\u3001\u534a\u53cc\u5de5\/\u5355\u5de5\u7cbe\u7b80\u3001DMA \u4f20\u8f93\u4ee5\u53ca I2S \u534f\u8bae\u517c\u5bb9；STM32F103C8T6 \u4e0a\u53ef\u7528\u8d44\u6e90\u4e3a SPI1 \u548c SPI2\u3002<\/li>\n
  • \u65f6\u5e8f\u4e0e\u6a21\u5f0f：SPI \u901a\u4fe1\u7684\u5173\u952e\u5728\u4e8e CPOL \u4e0e CPHA \u7684\u7ec4\u5408，\u4e8c\u8005\u5171\u540c\u51b3\u5b9a\u91c7\u6837\u8fb9\u6cbf\u3002\u6a21\u5f0f 0（CPOL=0\u3001CPHA=0）\u4e0b，\u7a7a\u95f2\u65f6 SCK \u4e3a\u4f4e\u7535\u5e73，\u7b2c\u4e00\u4e2a\u8fb9\u6cbf\u79fb\u5165\u6570\u636e\u3001\u7b2c\u4e8c\u4e2a\u8fb9\u6cbf\u79fb\u51fa\u6570\u636e，\u662f\u6700\u5e38\u7528\u7684\u914d\u7f6e\u3002<\/li>\n
  • \u8fde\u7eed\u4f20\u8f93\u4e0e\u975e\u8fde\u7eed\u4f20\u8f93：\u8fde\u7eed\u4f20\u8f93\u4f9d\u9760 TXE \u4e0e RXNE \u6807\u5fd7\u4f4d\u914d\u5408，\u5728\u53d1\u9001\u7f13\u51b2\u5668\u7a7a\u65f6\u5199\u5165\u4e0b\u4e00\u4e2a\u6570\u636e\u3001\u63a5\u6536\u7f13\u51b2\u5668\u975e\u7a7a\u65f6\u8bfb\u51fa\u6570\u636e，\u4ece\u800c\u5b9e\u73b0\u6570\u636e\u6d41\u7684\u65e0\u7f1d\u8854\u63a5；\u975e\u8fde\u7eed\u4f20\u8f93\u5219\u5728\u6bcf\u4e2a\u5b57\u8282\u4e4b\u95f4\u7b49\u5f85\u6807\u5fd7\u4f4d，\u5b9e\u73b0\u7b80\u5355\u4f46\u6548\u7387\u7565\u4f4e\u3002<\/li>\n
  • \u8f6f\u786c\u4ef6\u6ce2\u5f62\u5bf9\u6bd4：\u8f6f\u4ef6\u6a21\u62df SPI \u65f6\u5e8f\u7075\u6d3b\u4f46\u5360\u7528 CPU \u4e14\u901f\u7387\u53d7\u9650，\u786c\u4ef6 SPI \u7531\u5916\u8bbe\u81ea\u52a8\u4ea7\u751f\u65f6\u949f\u4e0e\u79fb\u4f4d\u64cd\u4f5c，\u6ce2\u5f62\u66f4\u89c4\u6574\u3001\u901f\u7387\u66f4\u9ad8，\u9002\u5408\u5bf9\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u6709\u8981\u6c42\u7684\u573a\u666f\u3002<\/li>\n
  • \u521d\u59cb\u5316\u6d41\u7a0b：\u5f00\u542f SPI \u4e0e GPIO \u65f6\u949f \u2192 \u914d\u7f6e GPIO（SCK\u3001MOSI \u590d\u7528\u63a8\u633d\u8f93\u51fa，MISO \u4e0a\u62c9\u8f93\u5165，SS \u901a\u7528\u63a8\u633d\u8f93\u51fa）\u2192 \u901a\u8fc7\u7ed3\u6784\u4f53\u914d\u7f6e SPI \u53c2\u6570\u5e76\u8c03\u7528 SPI_Init \u2192 \u8c03\u7528 SPI_Cmd \u4f7f\u80fd\u5916\u8bbe\u3002<\/li>\n
  • W25Q64 \u8bfb\u5199\u5b9e\u8df5：\u901a\u8fc7 MySPI_SwapByte \u5b8c\u6210\u5b57\u8282\u7ea7\u4ea4\u6362，\u5c01\u88c5\u51fa\u8bfb ID\u3001\u5199\u4f7f\u80fd\u3001\u7b49\u5f85\u5fd9\u3001\u9875\u7f16\u7a0b\u3001\u6247\u533a\u64e6\u9664\u548c\u8bfb\u6570\u636e\u7b49\u64cd\u4f5c，\u6700\u7ec8\u5728 main \u51fd\u6570\u4e2d\u5b8c\u6210\u64e6\u9664\u3001\u5199\u5165\u3001\u8bfb\u53d6\u5e76\u7528 OLED \u663e\u793a\u9a8c\u8bc1\u7ed3\u679c\u3002<\/li>\n<\/ul>\n

    \u6574\u4f53\u6765\u770b，\u786c\u4ef6 SPI \u7684\u4ef7\u503c\u5728\u4e8e\u628a\u65f6\u5e8f\u7ec6\u8282\u4ea4\u7ed9\u5916\u8bbe\u5904\u7406，\u8f6f\u4ef6\u5c42\u53ea\u9700\u5173\u6ce8\u6807\u5fd7\u4f4d\u5224\u65ad\u4e0e\u534f\u8bae\u6307\u4ee4\u7684\u6536\u53d1\u3002\u638c\u63e1\u8fd9\u5957\u201c\u5e95\u5c42\u5f15\u811a\u914d\u7f6e + \u534f\u8bae\u5c42\u5b57\u8282\u4ea4\u6362 + \u5668\u4ef6\u5c42\u6307\u4ee4\u5c01\u88c5\u201d\u7684\u5206\u5c42\u601d\u8def\u540e，\u518d\u8fc1\u79fb\u5230\u5176\u4ed6 SPI \u5668\u4ef6（\u5982\u4f20\u611f\u5668\u3001\u663e\u793a\u5c4f\u3001SD \u5361\u7b49）\u65f6，\u53ea\u9700\u66ff\u6362\u5668\u4ef6\u5c42\u7684\u6307\u4ee4\u4e0e\u6d41\u7a0b，\u5e95\u5c42\u4ee3\u7801\u57fa\u672c\u53ef\u4ee5\u590d\u7528\u3002<\/p>\n

    \u5982\u679c\u540e\u7eed\u9700\u8981\u8fdb\u4e00\u6b65\u63d0\u5347\u6027\u80fd，\u53ef\u4ee5\u8003\u8651\u5f15\u5165 DMA \u51cf\u5c11 CPU \u53c2\u4e0e，\u6216\u4f7f\u7528\u4e2d\u65ad\u65b9\u5f0f\u66ff\u4ee3\u8f6e\u8be2\u7b49\u5f85；\u5728\u6570\u636e\u91cf\u8f83\u5927\u3001\u5b9e\u65f6\u6027\u8981\u6c42\u8f83\u9ad8\u7684\u573a\u666f\u4e2d，\u8fd9\u4e9b\u4f18\u5316\u4f1a\u5e26\u6765\u660e\u663e\u6536\u76ca\u3002<\/p>\n<\/p>\n

    \u90fd\u770b\u5230\u8fd9\u4e86\u70b9\u70b9\u8d5e\u5427！\u6c42\u6c42\u4e86！<\/p>\n","protected":false},"excerpt":{"rendered":"

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