1、 stm32 SPI( 2M-Flash-W25X16 )偠fireE-MQQ313303034 STM32 ST3.0.02 / 11偠 FLASH ID 偠 PA4-SPI1-NSS : W25X16-CSPA5-SPI1-SCK : W25X16-CLK PA6-SPI1-MISO : W25X16-DO PA7-SPI1-MOSI : W25X16-DIOstartup/start_stm32f10x_hd.c CMSIS/core_

2、cm3.cCMSIS/system_stm32f10x.c FWlib/stm32f10x_gpio.c FWlib/stm32f10x_rcc.c FWlib/stm32f10x_usart.c FWlib/stm32f10x_spi.c : USER/main.cUSER/stm32f10x_it.c USER/usart1.c USER/ spi_flash.c STM32 I2C-EEPROM SPI -SPI EPROMADCFRAM偅 DMA stm32 SPI STM32 STM32F103VET62 SPI 偠 SPI1 FLASH W25X16 CSCLKDO DIO SPI

3、 FLASH 偠 偠-佪 Fwlib 1. stm32f10x_gpio.c2. stm32f10x_rcc.c3. stm32f10x_usart.c4. stm32f10x_spi.c stm32f10x_conf.h 1. #include stm32f10x_gpio.h2. #include stm32f10x_rcc.h stm32 3. #include stm32f10x_spi.h4. #include stm32f10x_usart.h main /* flash */ SPI_FLASH_BufferWrite(Tx_B

4、uffer, FLASH_WriteAddress, BufferSize);printf(rn %s rt, Tx_Buffer); 41./* */ SPI_FLASH_BufferRead(Rx_Buffer, FLASH_ReadAddress, BufferSize);printf(rn %s rn, Tx_Buffer); 45./* */TransferStatus1 = Buffercmp(Tx_Buffer, Rx_Buffer, BufferSize);if( PASSED = TransferStatus1 )printf(rn 2M flash(W25X16)!nr);

5、1.52.28. FlashID, DeviceID);29. /* Check the SPI Flash ID */30. if (FlashID = sFLASH_ID)/* #definesFLASH_ID0xEF3015 */ 31.32.33.printf(rn flash W25X16 !rn); 34.35. /* Erase SPI FLASH Sector to write on */36. SPI_FLASH_SectorErase(FLASH_SectorToErase); 37.38.39./* 1 115200

6、 8-N-1 */ USART1_Config();printf(rn 2M flash(W25X16)偠 rn);/* 2M flash W25X16 */ SPI_FLASH_Init();/* Get SPI Flash Device ID */ DeviceID = SPI_FLASH_ReadDeviceID();Delay( 200 );/* Get SPI Flash ID */ FlashID = SPI_FLASH_ReadID();printf(rn FlashID is 0x%X,Manufacturer Device ID is 0x%Xrn,/* 72M */ Sys

7、temInit();7.1. /*2.* main 3.* 4.* 5.* 6.*/7. int main(void) 8. 5 / 15. elseprintf(rn 2M flash(W25X16)!nr);/ if (FlashID = sFLASH_ID)elseprintf(rn W25X16 ID!nr);SPI_Flash_PowerDown();while(1); SystemInit(); 72

8、M USART1_Config(); 1. /*2. * Function Name: SPI_FLASH_Init3. * Description: Initializes the peripherals used by the SPI FLASH d river.4. * Input: None5. * Output: None6. * Return: None7. */8. void SPI_FLASH_Init(void) 9. 10. SPI_InitTypeDefSPI_InitStructure;11. GPIO_InitTypeDef GPIO_InitStructure; 1

9、2.13. /* Enable SPI1 and GPIO clocks */14. /*! SPI_FLASH_SPI_CS_GPIO, SPI_FLASH_SPI_MOSI_GPIO,15. SPI_FLASH_SPI_MISO_GPIO, SPI_FLASH_SPI_DETECT_GPIO16. and SPI_FLASH_SPI_SCK_GPIO Periph clock enable */17. RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOD,18. ENABLE);19. /*! SPI_FLAS

10、H_SPI Periph clock enable */20. RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);21. /*! AFIO Periph clock enable */22. RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); 23.24.25. /*! Configure SPI_FLASH_SPI pins: SCK */26. GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;27. GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;28. GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;29. GPIO_Init(GPIOA, &GPIO_InitStructure); 30.31. /*! Configure SPI_FLASH_SPI pins: MISO */32. GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;33. GPIO_Init(GPIOA, &GPIO_InitStructure); 34.35. /*!