STM32 I2C-DMA传输详解与通用化配置

uint16_t LSM303DLHC_DMA_Read(uint8_t DeviceAddr, uint8_t   RegisterAddr, uint16_t NumByteToRead)
{
  __IO uint32_t LSM303DLHC_Timeout = LSM303DLHC_LONG_TIMEOUT;
  __IO uint32_t temp;

  I2C_Initialization();
  DMA_Config();
restart:

  LSM303DLHC_Timeout = LSM303DLHC_LONG_TIMEOUT;
   /* Send START condition */
  I2C_GenerateSTART(LSM303DLHC_I2C, ENABLE);
  /* Test on EV5 and clear it */
  while (!I2C_CheckEvent(LSM303DLHC_I2C, I2C_EVENT_MASTER_MODE_SELECT))
  {
    if (LSM303DLHC_Timeout-- == 0)
      return ERROR;
  }

   /* Active the needed channel Request */
     I2C_DMACmd(I2C1, ENABLE);

  LSM303DLHC_Timeout = LSM303DLHC_LONG_TIMEOUT;
  /* Send slave address for read */
  I2C_Send7bitAddress(LSM303DLHC_I2C, DeviceAddr, I2C_Direction_Transmitter);

  while (!I2C_CheckEvent(LSM303DLHC_I2C,I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED))
  {
    if (LSM303DLHC_Timeout-- == 0)
    {

      I2C_ClearFlag(LSM303DLHC_I2C,I2C_FLAG_BUSY|I2C_FLAG_AF);
      goto restart;
    }
  }
  /* Clear EV6 by setting again the PE bit */
  I2C_Cmd(LSM303DLHC_I2C, ENABLE);

  I2C_SendData(LSM303DLHC_I2C, RegisterAddr);

  /* Test on EV8 and clear it */
  LSM303DLHC_Timeout = LSM303DLHC_LONG_TIMEOUT;
  while (!I2C_CheckEvent(LSM303DLHC_I2C, I2C_EVENT_MASTER_BYTE_TRANSMITTED))
  {
    if (LSM303DLHC_Timeout-- == 0)
     return ERROR;
  }

  if (NumByteToRead == 0x01)
  {
    restart3:
    /* Send START condition */
    I2C_GenerateSTART(LSM303DLHC_I2C, ENABLE);
    while (!I2C_CheckEvent(LSM303DLHC_I2C, I2C_EVENT_MASTER_MODE_SELECT));
    /* Send Slave address for read */
    I2C_Send7bitAddress(LSM303DLHC_I2C, DeviceAddr, I2C_Direction_Receiver);
    /* Wait until ADDR is set */
    LSM303DLHC_Timeout = LSM303DLHC_LONG_TIMEOUT;
    while (!I2C_GetFlagStatus(LSM303DLHC_I2C, I2C_FLAG_ADDR))
    {
      if (LSM303DLHC_Timeout-- == 0)