STM32G431 Break input for PWMs

[sshan.2]

I am generating two PWMs with TIM1 CH1 and CH2 .I want to stop the PWMs when Break input is present. I have configured the STM32 Break input in the STM32cubeIDE and able to stop the PWMs when Break input is HIGH(3.3v).

I needed the reverse way now like when Break input is GND(0v) No PWMs .I have changed the Digital input polarity -Low and Break Polarity -Low but No luck .

Please suggest any ideas on this ??

[Javier1]

Could you post some code or the CubeMX file?

Did you spotted this in the cubeMX config window already?

 

source

[sshan.2]

Hi Javier,

Yes I did the changes as you mentioned in the screen shot in the STMCubeIDE.below is the code

 htim1.Instance = TIM1;

 htim1.Init.Prescaler = 0;

 htim1.Init.CounterMode = TIM_COUNTERMODE_CENTERALIGNED1;

 htim1.Init.Period = PERIOD;

 htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;

 htim1.Init.RepetitionCounter = 0;

 htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;

 if (HAL_TIM_PWM_Init(&htim1) != HAL_OK)

 {

  Error_Handler();

 }

 sMasterConfig.MasterOutputTrigger = TIM_TRGO_OC2REF;

 sMasterConfig.MasterOutputTrigger2 = TIM_TRGO2_RESET;

 sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;

 if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)

 {

  Error_Handler();

 }

 sBreakInputConfig.Source = TIM_BREAKINPUTSOURCE_BKIN;

 sBreakInputConfig.Enable = TIM_BREAKINPUTSOURCE_ENABLE;

 sBreakInputConfig.Polarity = TIM_BREAKINPUTSOURCE_POLARITY_LOW;

 if (HAL_TIMEx_ConfigBreakInput(&htim1, TIM_BREAKINPUT_BRK, &sBreakInputConfig) != HAL_OK)

 {

  Error_Handler();

 }

 sConfigOC.OCMode = TIM_OCMODE_PWM1;

 sConfigOC.Pulse = DUTY_CYCLE;

 sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;

 sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;

 sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;

 sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;

 sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;

 if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)

 {

  Error_Handler();

 }

 sConfigOC.Pulse = PERIOD-DUTY_CYCLE;

 sConfigOC.OCPolarity = TIM_OCPOLARITY_LOW;

 if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)

 {

  Error_Handler();

 }

 sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;

 sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;

 sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;

 sBreakDeadTimeConfig.DeadTime = 0;

 sBreakDeadTimeConfig.BreakState = TIM_BREAK_ENABLE;

 sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_LOW;

 sBreakDeadTimeConfig.BreakFilter = 0;

 sBreakDeadTimeConfig.BreakAFMode = TIM_BREAK_AFMODE_INPUT;

 sBreakDeadTimeConfig.Break2State = TIM_BREAK2_DISABLE;

 sBreakDeadTimeConfig.Break2Polarity = TIM_BREAK2POLARITY_HIGH;

 sBreakDeadTimeConfig.Break2Filter = 0;

 sBreakDeadTimeConfig.Break2AFMode = TIM_BREAK_AFMODE_INPUT;

 sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;

 if (HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig) != HAL_OK)

 {

  Error_Handler();

 }

[Javier1]

could you share the cubeMX .ioc file?

[sshan.2]

Javier