STM32F103的I2C问题

只看该作者 · 2020-4-26 09:08

uint8_t I2C_ByteWrite(uint8_t WriteDatas,uint8_t WriteAddr){
  I2C_GenerateSTART(EEPROM_I2Cx, ENABLE);

  I2CTimeout = I2CT_FLAG_TIMEOUT;
  /* Test on EV5 and clear it */
  while(!I2C_CheckEvent(EEPROM_I2Cx, I2C_EVENT_MASTER_MODE_SELECT))
  {
if((I2CTimeout--) == 0) return I2C_TIMEOUT_UserCallback(0);
  }

  I2CTimeout = I2CT_FLAG_TIMEOUT;
  /* Send EEPROM address for write */
  I2C_Send7bitAddress(EEPROM_I2Cx, EEPROM_ADDRESS, I2C_Direction_Transmitter);

  /* Test on EV6 and clear it */
  while(!I2C_CheckEvent(EEPROM_I2Cx, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED))
  {
if((I2CTimeout--) == 0) return I2C_TIMEOUT_UserCallback(1);
  }
  /* Send the EEPROM's internal address to write to */
  I2C_SendData(EEPROM_I2Cx, WriteAddr);

  I2CTimeout = I2CT_FLAG_TIMEOUT;
  /* Test on EV8 and clear it */
  while(!I2C_CheckEvent(EEPROM_I2Cx, I2C_EVENT_MASTER_BYTE_TRANSMITTED))
  {
if((I2CTimeout--) == 0) return I2C_TIMEOUT_UserCallback(2);
  }

  /* Send the byte to be written */
  I2C_SendData(EEPROM_I2Cx,WriteAddr);

  I2CTimeout = I2CT_FLAG_TIMEOUT;
  /* Test on EV8 and clear it */
  while(!I2C_CheckEvent(EEPROM_I2Cx, I2C_EVENT_MASTER_BYTE_TRANSMITTED))
  {
if((I2CTimeout--) == 0) return I2C_TIMEOUT_UserCallback(3);
  }

  /* Send STOP condition */
  I2C_GenerateSTOP(EEPROM_I2Cx, ENABLE);

      return 1;
}

uint8_t Current_Address_Read(uint8_t ReadDatas,uint8_t ReadAddr)
{
  I2C_GenerateSTART(EEPROM_I2Cx, ENABLE);

  I2CTimeout = I2CT_FLAG_TIMEOUT;
  /* Test on EV5 and clear it */
  while(!I2C_CheckEvent(EEPROM_I2Cx, I2C_EVENT_MASTER_MODE_SELECT))
  {
if((I2CTimeout--) == 0) return I2C_TIMEOUT_UserCallback(4);
  }

  I2CTimeout = I2CT_FLAG_TIMEOUT;
  /* Send EEPROM address for write */
  I2C_Send7bitAddress(EEPROM_I2Cx, EEPROM_ADDRESS, I2C_Direction_Receiver);

  /* Test on EV6 and clear it */
  while(!I2C_CheckEvent(EEPROM_I2Cx, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED))             ||程序停在这里
  {
if((I2CTimeout--) == 0) return I2C_TIMEOUT_UserCallback(5);
  }
      while(I2C_CheckEvent(EEPROM_I2Cx, I2C_EVENT_MASTER_BYTE_RECEIVED)==0)
            {
                     if((I2CTimeout--) == 0) return I2C_TIMEOUT_UserCallback(6);
            }
  ReadDatas=I2C_ReceiveData(EEPROM_I2Cx);

      /* Disable Acknowledgement */
  I2C_AcknowledgeConfig(EEPROM_I2Cx, DISABLE);

  /* Send STOP Condition */
  I2C_GenerateSTOP(EEPROM_I2Cx, ENABLE);
            return 1;
}

int main(void)
{
      uint8_t read;
  USART_Config();
      LED_GPIO_Config();
      I2C_EE_Init();
  I2C_ByteWrite(10,EEP_Firstpage);
      Current_Address_Read(read,EEP_Firstpage);
      if(read==10)
      {
      LED_G(on);
      }else
      {
      LED_R(on);
      }
  while (1)
  {
  }
}

程序总是停在读EEPROM的过程传递I2C设备地址，不能继续往下执行，求解，把例程也看几遍，也想不出问题在哪。

STM32F103的I2C问题

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