adc_fetch.cxx

// dawn/src/io/adc_fetch.cxx
//
// SPDX-License-Identifier: Apache-2.0
//
 
#include "dawn/io/adc_fetch.hxx"
 
using namespace dawn;
 
int CIOAdcFetch::getDataImpl(IODataCmn &data, size_t len)
{
  auto *ptr = reinterpret_cast<dawn::porting::adc_read_s *>(data.getDataPtr());
  int ret;
 
  if (len != 1)
    {
      return -ENOTSUP;
    }
 
  if (data.getItems() < getChans())
    {
      return -ENOMEM;
    }
 
  ret = adc_start(getFdInternal());
  if (ret < 0)
    {
      return ret;
    }
 
  ret = adc_read(getFdInternal(), ptr, data.getDataSize());
  if (ret < 0)
    {
      return ret;
    }
 
#ifdef CONFIG_DAWN_IO_TIMESTAMP
  if (isTimestamp())
    {
      data.getTs() = getTimestamp();
    }
#endif
 
  return OK;
}
 
int CIOAdcFetch::doStart()
{
  return OK;
}
 
int CIOAdcFetch::doStop()
{
  return OK;
}
 
int CIOAdcFetch::trigger(uint8_t cmd)
{
  UNUSED(cmd);
  return adc_start(getFdInternal());
}