Proper output config for complementary HRTIM outputs

[DavidNaviaux]

I'm using HRTIM Timer F to create two complementary outputs at TF1 and TF2 with deadtime.  I'm finding conflicting examples of how to set the output configuration of the two outputs.

Which of these code segments is correct?

  pOutputCfg.SetSource = HRTIM_OUTPUTSET_MASTERCMP3;
  pOutputCfg.ResetSource = HRTIM_OUTPUTRESET_TIMCMP1;
  if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_F, HRTIM_OUTPUT_TF1, &pOutputCfg) != HAL_OK)
  {
    Error_Handler();
  }

  pOutputCfg.SetSource = HRTIM_OUTPUTRESET_TIMCMP1;
  pOutputCfg.ResetSource = HRTIM_OUTPUTSET_MASTERCMP3;
  if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_F, HRTIM_OUTPUT_TF2, &pOutputCfg) != HAL_OK)
  {
    Error_Handler();
  }

or:

  pOutputCfg.SetSource = HRTIM_OUTPUTSET_MASTERCMP3;
  pOutputCfg.ResetSource = HRTIM_OUTPUTRESET_TIMCMP1;
  if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_F, HRTIM_OUTPUT_TF1, &pOutputCfg) != HAL_OK)
  {
    Error_Handler();
  }

  if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_F, HRTIM_OUTPUT_TF2, &pOutputCfg) != HAL_OK)
  {
    Error_Handler();
  }

[Saket_Om]

Hello @DavidNaviaux 

For your use case the good implementation is: 

  HAL_HRTIM_WaveformTimerConfig WaveformTimerConfig;
  WaveformTimerConfig.DeadTimeInsertion = HRTIM_TIMDEADTIMEINSERTION_ENABLED;
  ...
  HAL_HRTIM_WaveformTimerConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_F, &WaveformTimerConfig);
 
  Followed by the deadtime configuration:
  HAL_HRTIM_DeadTimeConfig(...)
 
  pOutputCfg.SetSource = HRTIM_OUTPUTSET_MASTERCMP3;
  pOutputCfg.ResetSource = HRTIM_OUTPUTRESET_TIMCMP1;
  if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_F, HRTIM_OUTPUT_TF1, &pOutputCfg) != HAL_OK)
  {
    Error_Handler();
  }

Please refer to the RM0433(HRTIM section) for more details. 

[DavidNaviaux]

My concern is how to initialize the output of TF2.  Does either of my examples handle that correctly?

[DavidNaviaux · Accepted solution]

With some search of some sample code, I found that when you have deadtime between TF1 and TF2, TF2 should be initialized with the SetSource and ResetSource set as follows:

  pOutputCfg.SetSource = HRTIM_OUTPUTSET_NONE;
  pOutputCfg.ResetSource = HRTIM_OUTPUTRESET_NONE;
  if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_F, HRTIM_OUTPUT_TF2, &pOutputCfg) != HAL_OK)
  {
    Error_Handler();
  }