Fault input for HRTIM is configured as output?

[DKuro.1]

Hi, I am working with the HRTIM in the STM32G474 Nucleo and trying to configure the fault input to reset the outputs.

When I see in the GPIO config of the HRTIM in the STM32CubeIDE I see that the fault input pin HRTIM_FLT1 is configured as Alternate Function Push Pull and if I use a 220 ohm resistor (to prevent a short circuit) in the HRTIM_FLT1 pin and also measure the input, it still 0V. It seems that the input is... not an input :\

Also in the attached code I see that pTimerCfg.FaultEnable = HRTIM_TIMFAULTENABLE_NONE, and I think it should be HRTIM_TIMFAULTENABLE_FAULT1, it is right?

Also in the registers I can see that FLTxR = 0 and it should be 1:

Bit 0 FLT1EN: Fault 1 enable

0: Fault 1 input ignored

1: Fault 1 input is active and disables HRTIM outputs

What I am doing wrong?

The HRTIM initialization code is attached

[DKuro.1]

/**
  * @brief HRTIM1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_HRTIM1_Init(void)
{
 
  /* USER CODE BEGIN HRTIM1_Init 0 */
  /* USER CODE END HRTIM1_Init 0 */
 
  HRTIM_FaultCfgTypeDef pFaultCfg = {0};
  HRTIM_FaultBlankingCfgTypeDef pFaultBlkCfg = {0};
  HRTIM_TimeBaseCfgTypeDef pTimeBaseCfg = {0};
  HRTIM_TimerCfgTypeDef pTimerCfg = {0};
  HRTIM_CompareCfgTypeDef pCompareCfg = {0};
  HRTIM_TimerCtlTypeDef pTimerCtl = {0};
  HRTIM_DeadTimeCfgTypeDef pDeadTimeCfg = {0};
  HRTIM_OutputCfgTypeDef pOutputCfg = {0};
 
  /* USER CODE BEGIN HRTIM1_Init 1 */
 
  /* USER CODE END HRTIM1_Init 1 */
  hhrtim1.Instance = HRTIM1;
  hhrtim1.Init.HRTIMInterruptResquests = HRTIM_IT_FLT1;
  hhrtim1.Init.SyncOptions = HRTIM_SYNCOPTION_MASTER;
  hhrtim1.Init.SyncOutputSource = HRTIM_SYNCOUTPUTSOURCE_MASTER_CMP1;
  hhrtim1.Init.SyncOutputPolarity = HRTIM_SYNCOUTPUTPOLARITY_POSITIVE;
  if (HAL_HRTIM_Init(&hhrtim1) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_DLLCalibrationStart(&hhrtim1, HRTIM_CALIBRATIONRATE_3) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_PollForDLLCalibration(&hhrtim1, 10) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_FaultPrescalerConfig(&hhrtim1, HRTIM_FAULTPRESCALER_DIV1) != HAL_OK)
  {
    Error_Handler();
  }
  pFaultCfg.Source = HRTIM_FAULTSOURCE_DIGITALINPUT;
  pFaultCfg.Polarity = HRTIM_FAULTPOLARITY_HIGH;
  pFaultCfg.Filter = HRTIM_FAULTFILTER_NONE;
  pFaultCfg.Lock = HRTIM_FAULTLOCK_READONLY;
  if (HAL_HRTIM_FaultConfig(&hhrtim1, HRTIM_FAULT_1, &pFaultCfg) != HAL_OK)
  {
    Error_Handler();
  }
  pFaultBlkCfg.Threshold = 0;
  pFaultBlkCfg.ResetMode = HRTIM_FAULTCOUNTERRST_UNCONDITIONAL;
  pFaultBlkCfg.BlankingSource = HRTIM_FAULTBLANKINGMODE_RSTALIGNED;
  if (HAL_HRTIM_FaultCounterConfig(&hhrtim1, HRTIM_FAULT_1, &pFaultBlkCfg) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_FaultBlankingConfigAndEnable(&hhrtim1, HRTIM_FAULT_1, &pFaultBlkCfg) != HAL_OK)
  {
    Error_Handler();
  }
  HAL_HRTIM_FaultModeCtl(&hhrtim1, HRTIM_FAULT_1, HRTIM_FAULTMODECTL_ENABLED);
  pTimeBaseCfg.Period = 27200;
  pTimeBaseCfg.RepetitionCounter = 0x00;
  pTimeBaseCfg.PrescalerRatio = HRTIM_PRESCALERRATIO_MUL8;
  pTimeBaseCfg.Mode = HRTIM_MODE_CONTINUOUS;
  if (HAL_HRTIM_TimeBaseConfig(&hhrtim1, HRTIM_TIMERINDEX_MASTER, &pTimeBaseCfg) != HAL_OK)
  {
    Error_Handler();
  }
  pTimerCfg.InterruptRequests = HRTIM_MASTER_IT_NONE;
  pTimerCfg.DMARequests = HRTIM_MASTER_DMA_NONE;
  pTimerCfg.DMASrcAddress = 0x0000;
  pTimerCfg.DMADstAddress = 0x0000;
  pTimerCfg.DMASize = 0x1;
  pTimerCfg.HalfModeEnable = HRTIM_HALFMODE_DISABLED;
  pTimerCfg.InterleavedMode = HRTIM_INTERLEAVED_MODE_DISABLED;
  pTimerCfg.StartOnSync = HRTIM_SYNCSTART_DISABLED;
  pTimerCfg.ResetOnSync = HRTIM_SYNCRESET_DISABLED;
  pTimerCfg.DACSynchro = HRTIM_DACSYNC_NONE;
  pTimerCfg.PreloadEnable = HRTIM_PRELOAD_DISABLED;
  pTimerCfg.UpdateGating = HRTIM_UPDATEGATING_INDEPENDENT;
  pTimerCfg.BurstMode = HRTIM_TIMERBURSTMODE_MAINTAINCLOCK;
  pTimerCfg.RepetitionUpdate = HRTIM_UPDATEONREPETITION_ENABLED;
  pTimerCfg.ReSyncUpdate = HRTIM_TIMERESYNC_UPDATE_UNCONDITIONAL;
  if (HAL_HRTIM_WaveformTimerConfig(&hhrtim1, HRTIM_TIMERINDEX_MASTER, &pTimerCfg) != HAL_OK)
  {
    Error_Handler();
  }
  pCompareCfg.CompareValue = 9066;
  if (HAL_HRTIM_WaveformCompareConfig(&hhrtim1, HRTIM_TIMERINDEX_MASTER, HRTIM_COMPAREUNIT_1, &pCompareCfg) != HAL_OK)
  {
    Error_Handler();
  }
  pTimeBaseCfg.Mode = HRTIM_MODE_SINGLESHOT;
  if (HAL_HRTIM_TimeBaseConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, &pTimeBaseCfg) != HAL_OK)
  {
    Error_Handler();
  }
  pTimerCtl.UpDownMode = HRTIM_TIMERUPDOWNMODE_UP;
  pTimerCtl.GreaterCMP1 = HRTIM_TIMERGTCMP1_GREATER;
  pTimerCtl.DualChannelDacEnable = HRTIM_TIMER_DCDE_DISABLED;
  if (HAL_HRTIM_WaveformTimerControl(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, &pTimerCtl) != HAL_OK)
  {
    Error_Handler();
  }
  pTimerCfg.InterruptRequests = HRTIM_TIM_IT_NONE;
  pTimerCfg.DMARequests = HRTIM_TIM_DMA_NONE;
  pTimerCfg.DMASrcAddress = 0x0000;
  pTimerCfg.DMADstAddress = 0x0000;
  pTimerCfg.DMASize = 0x1;
  pTimerCfg.RepetitionUpdate = HRTIM_UPDATEONREPETITION_DISABLED;
  pTimerCfg.PushPull = HRTIM_TIMPUSHPULLMODE_DISABLED;
  pTimerCfg.FaultEnable = HRTIM_TIMFAULTENABLE_NONE;
  pTimerCfg.FaultLock = HRTIM_TIMFAULTLOCK_READWRITE;
  pTimerCfg.DeadTimeInsertion = HRTIM_TIMDEADTIMEINSERTION_ENABLED;
  pTimerCfg.DelayedProtectionMode = HRTIM_TIMER_A_B_C_DELAYEDPROTECTION_DISABLED;
  pTimerCfg.UpdateTrigger = HRTIM_TIMUPDATETRIGGER_NONE;
  pTimerCfg.ResetTrigger = HRTIM_TIMRESETTRIGGER_MASTER_PER;
  pTimerCfg.ResetUpdate = HRTIM_TIMUPDATEONRESET_DISABLED;
  if (HAL_HRTIM_WaveformTimerConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, &pTimerCfg) != HAL_OK)
  {
    Error_Handler();
  }
  pTimerCfg.DMASrcAddress = 0x0000;
  pTimerCfg.DMADstAddress = 0x0000;
  pTimerCfg.DMASize = 0x1;
  if (HAL_HRTIM_WaveformTimerConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_B, &pTimerCfg) != HAL_OK)
  {
    Error_Handler();
  }
  pTimerCfg.DMASrcAddress = 0x0000;
  pTimerCfg.DMADstAddress = 0x0000;
  pTimerCfg.DMASize = 0x1;
  if (HAL_HRTIM_WaveformTimerConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_C, &pTimerCfg) != HAL_OK)
  {
    Error_Handler();
  }
  pCompareCfg.CompareValue = 8984;
  if (HAL_HRTIM_WaveformCompareConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, HRTIM_COMPAREUNIT_1, &pCompareCfg) != HAL_OK)
  {
    Error_Handler();
  }
  pDeadTimeCfg.Prescaler = HRTIM_TIMDEADTIME_PRESCALERRATIO_MUL8;
  pDeadTimeCfg.RisingValue = 0x000;
  pDeadTimeCfg.RisingSign = HRTIM_TIMDEADTIME_RISINGSIGN_POSITIVE;
  pDeadTimeCfg.RisingLock = HRTIM_TIMDEADTIME_RISINGLOCK_WRITE;
  pDeadTimeCfg.RisingSignLock = HRTIM_TIMDEADTIME_RISINGSIGNLOCK_WRITE;
  pDeadTimeCfg.FallingValue = 0x000;
  pDeadTimeCfg.FallingSign = HRTIM_TIMDEADTIME_FALLINGSIGN_POSITIVE;
  pDeadTimeCfg.FallingLock = HRTIM_TIMDEADTIME_FALLINGLOCK_WRITE;
  pDeadTimeCfg.FallingSignLock = HRTIM_TIMDEADTIME_FALLINGSIGNLOCK_WRITE;
  if (HAL_HRTIM_DeadTimeConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, &pDeadTimeCfg) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_DeadTimeConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_B, &pDeadTimeCfg) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_DeadTimeConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_C, &pDeadTimeCfg) != HAL_OK)
  {
    Error_Handler();
  }
  pOutputCfg.Polarity = HRTIM_OUTPUTPOLARITY_HIGH;
  pOutputCfg.SetSource = HRTIM_OUTPUTSET_MASTERPER;
  pOutputCfg.ResetSource = HRTIM_OUTPUTRESET_TIMCMP1;
  pOutputCfg.IdleMode = HRTIM_OUTPUTIDLEMODE_NONE;
  pOutputCfg.IdleLevel = HRTIM_OUTPUTIDLELEVEL_INACTIVE;
  pOutputCfg.FaultLevel = HRTIM_OUTPUTFAULTLEVEL_INACTIVE;
  pOutputCfg.ChopperModeEnable = HRTIM_OUTPUTCHOPPERMODE_DISABLED;
  pOutputCfg.BurstModeEntryDelayed = HRTIM_OUTPUTBURSTMODEENTRY_REGULAR;
  if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, HRTIM_OUTPUT_TA1, &pOutputCfg) != HAL_OK)
  {
    Error_Handler();
  }
  pOutputCfg.FaultLevel = HRTIM_OUTPUTFAULTLEVEL_NONE;
  if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_B, HRTIM_OUTPUT_TB1, &pOutputCfg) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_C, HRTIM_OUTPUT_TC1, &pOutputCfg) != HAL_OK)
  {
    Error_Handler();
  }
  pOutputCfg.SetSource = HRTIM_OUTPUTSET_NONE;
  pOutputCfg.ResetSource = HRTIM_OUTPUTRESET_NONE;
  pOutputCfg.FaultLevel = HRTIM_OUTPUTFAULTLEVEL_INACTIVE;
  if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, HRTIM_OUTPUT_TA2, &pOutputCfg) != HAL_OK)
  {
    Error_Handler();
  }
  pOutputCfg.FaultLevel = HRTIM_OUTPUTFAULTLEVEL_NONE;
  if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_B, HRTIM_OUTPUT_TB2, &pOutputCfg) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_C, HRTIM_OUTPUT_TC2, &pOutputCfg) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_TimeBaseConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_B, &pTimeBaseCfg) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_WaveformTimerControl(&hhrtim1, HRTIM_TIMERINDEX_TIMER_B, &pTimerCtl) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_WaveformCompareConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_B, HRTIM_COMPAREUNIT_1, &pCompareCfg) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_TimeBaseConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_C, &pTimeBaseCfg) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_WaveformTimerControl(&hhrtim1, HRTIM_TIMERINDEX_TIMER_C, &pTimerCtl) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_HRTIM_WaveformCompareConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_C, HRTIM_COMPAREUNIT_1, &pCompareCfg) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN HRTIM1_Init 2 */
 
 
  /* USER CODE END HRTIM1_Init 2 */
  HAL_HRTIM_MspPostInit(&hhrtim1);
 
}

[waclawek.jan]

There's not much activity around HRTIM on this forum.

In any case, read out and check the relevant GPIO and HRTIM registers' content.

JW