STM32篇——SPI 通信

//I2C1对象
 SPI_HandleTypeDef hspi1;
 //根据配置自动生成初始化代码，并在main函数中进行了调用
static void MX_SPI1_Init(void)
{
  hspi1.Instance = SPI1;
  hspi1.Init.Mode = SPI_MODE_MASTER;
  hspi1.Init.Direction = SPI_DIRECTION_2LINES;
  hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
  hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
  hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
  hspi1.Init.NSS = SPI_NSS_SOFT;
  hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
  hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
  hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
  hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  hspi1.Init.CRCPolynomial = 10;
  if (HAL_SPI_Init(&hspi1) != HAL_OK)
  {
    Error_Handler();
  }
}

HAL_StatusTypeDef HAL_SPI_TransmitReceive(SPI_HandleTypeDef *hspi, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size,
                                          uint32_t Timeout);

//添加头文件支持
#include "bsp_spi_flash.h"
//增加extern
extern SPI_HandleTypeDef hspi1;

u16  W25QXX_ReadID(void); 
void W25QXX_WAKEUP(void);                
void SPI_FLASH_SectorErase(u32 SectorAddr);
void SPI_FLASH_BufferWrite(u8* pBuffer, u32 WriteAddr, u16 NumByteToWrite);
void SPI_FLASH_BufferRead(u8* pBuffer, u32 ReadAddr, u16 NumByteToRead);
void SPI_FLASH_PageWrite(u8* pBuffer, u32 WriteAddr, u16 NumByteToWrite);

#define  FLASHBUFFSIZE 64
void SPI_FLASH_Test(void)
{
    uint16_t FLASH_ID;
    uint8_t Flash_Wr_Buff[FLASHBUFFSIZE],Flash_Rd_Buff[FLASHBUFFSIZE];
    printf("SPI总线通信实验，读写8M外部FLASH W25Q64!\r\n",FLASH_ID);
    FLASH_ID = W25QXX_ReadID();//读取W25Q64器件ID
    HAL_Delay(100);
    printf("the FLASH Device ID is 0x%X!\r\n",FLASH_ID);
    //W25Q64 = 8MByte,地址范围：0x000000-0x7FFFFF
    //Sector：每4KB为一个Sector,8M/4K=2048个
    //Block：每64KB为一个Block,8M/64K=128个，每个Block包括16个Sector
    SPI_FLASH_SectorErase(0x00);//擦除第一个Sector
    for (int i = 0; i < FLASHBUFFSIZE; ++i) Flash_Wr_Buff[i] = i;
    SPI_FLASH_BufferWrite(Flash_Wr_Buff,0x00,FLASHBUFFSIZE);
    SPI_FLASH_BufferRead(Flash_Rd_Buff,0x00,FLASHBUFFSIZE);
    printf("Read data form W25Q64: \r\n");
    for(uint16_t i=0;i<FLASHBUFFSIZE;i++)
    {
        printf("0x%02x ",Flash_Rd_Buff[i]);
    }
    printf("\r\n");
}