XMC1300 set gain of ADCCH001 APP

[Arno]

The ADCCH001 APP does not yet support the integrated gain of XMC1000 products so far. In order to set the gain with respect to the ADCCH001_Handle, you can use the following function:

/**
* This function sets the gain of the assigned channel
*/
status_t ADCCH001_SetGain(const ADCCH001_HandleType* HandlePtr, uint8_t GainConfig)
{
       __IO uint32_t*  GNCTRPtr;
       uint8_t ChannelNo;

  status_t Status = (uint32_t)ADCCH001_OPERATION_NOT_ALLOWED;
//  DBG002_FUNCTION_ENTRY(DBG002_GID_ADCCH001, (uint32_t)ADCCH001_FUN_ENTRY);

  if((GainConfig > (uint8_t)3))
  {
    Status = (uint32_t)ADCCH001_INVALID_PARAM;
//    DBG002_ERROR(DBG002_GID_ADCCH001, (uint8_t)Status, 0, (uint8_t*) NULL);
  }
  else
  {
         if(HandlePtr->ADCGrPtr == 0)
                GNCTRPtr = &(SHS0->GNCTR00);
         else
                GNCTRPtr = &(SHS0->GNCTR10);

         if((HandlePtr->DynamicHandlePtr->State != ADCCH001_UNINITIALIZED))
         {
                if((HandlePtr->kChannelNo == (uint8_t)0) || (HandlePtr->kChannelNo == (uint8_t)1))
                {
                     ChannelNo = HandlePtr->ADCGrPtr->ALIAS >> (HandlePtr->kChannelNo * (uint8_t)8);
                }
                else
                {
                       ChannelNo = HandlePtr->kChannelNo;
                }
                *GNCTRPtr &= ~((uint32_t)0x03 << (ChannelNo * (uint8_t)4));
                *GNCTRPtr |= ((uint32_t)GainConfig << (ChannelNo * (uint8_t)4));
                Status = (uint32_t)DAVEApp_SUCCESS;
         }
         else
         {
//            DBG002_ERROR(DBG002_GID_ADCCH001, (uint8_t)Status, 0, (uint8_t*) NULL);
         }

  }

//  DBG002_FUNCTION_EXIT(DBG002_GID_ADCCH001, (uint32_t)ADCCH001_FUN_EXIT);
  return Status;
}

The function is called as follows (e.g for channel instance 0 with a gain of 12):

       
      ADCCH001_SetGain( &ADCCH001_Handle0, 0x03 ); //  0x00: Gain 1 | 0x01: Gain 3 | 0x02: Gain6 | 0x03: Gain 12