stm32f767使用i2c读取摄像头id有误！！

小希希爱自己提问时间：2018-5-24 10:49 /

问答
是否解决:

使用的stm32f767芯片HAL库，连接OV2640摄像头，通过硬件i2c来读写摄像头出现问题！！
i2c配置如下：
      I2C_Handle.Instance = I2C4;
      I2C_Handle.Init.Timing          = 0x60201E2B;//100KHz
      I2C_Handle.Init.OwnAddress1    =0;
      I2C_Handle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
      I2C_Handle.Init.DualAddressMode  = I2C_DUALADDRESS_DISABLE;
      I2C_Handle.Init.OwnAddress2    = 0;
      I2C_Handle.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
      I2C_Handle.Init.GeneralCallMode  = I2C_GENERALCALL_DISABLE;
      I2C_Handle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;

写寄存器用的函数HAL_I2C_Mem_Write，读寄存器用的HAL_I2C_Mem_Read，
uint8_t OV2640_WriteReg(uint16_t Addr, uint8_t Data)
{
  HAL_StatusTypeDef status = HAL_OK;
  status = HAL_I2C_Mem_Write(&I2C_Handle, OV2640_DEVICE_ADDRESS, (uint16_t)Addr, I2C_MEMADD_SIZE_8BIT, (uint8_t*)&Data, 1, 1000);
  if(status != HAL_OK)
  {
I2Cx_Error();
  }
}
开始读取摄像头id，总卡在HAL_I2C_Mem_Write内的I2C_RequestMemoryWrite函数上，返回HAL_ERROR！！这是哪里出现了问题？？请大神指教啊！！！