Why in HardwareTimer FREQ_DUTY mode don't use timer slave reset Mode?

[KiraVerSace]

After read the source code and Frequency_Dutycycle_measurement.ino, I found that use the capture the CC and timer count to calculate the duty and frequency, but there is a more convenient method.
Eg: Let the TIM1 work in slave mode(reset mode), and use TI1FP1 as trigger source.

Code: Select all

/* USER CODE BEGIN 4 */
void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)
{
	if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1)    
    //注意这里为HAL_TIM_ACTIVE_CHANNEL_1而不是TIM_CHANNEL_1
	{
		PWM_RisingCount = HAL_TIM_ReadCapturedValue(&htim3,TIM_CHANNEL_1);
		duty = (float)PWM_FallingCount / PWM_RisingCount;
	}
	if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_2)
	{
		PWM_FallingCount = HAL_TIM_ReadCapturedValue(&htim3,TIM_CHANNEL_2);
	}
}
/* USER CODE END 4 */

only one attach interrupt could get the result, the Frequency_Dutycycle_measurement.ino is too complex.

[fpiSTM]

Hi @KiraVerSace

You are probably right this is not the best way to do this but this is only an example using basic HardwareTimer api provided by the core.
That's all
Feel free to provide an example using HAL TIM and it could be added to the STM32Examples.