Posted on October 18, 2016 at 18:32Hello clive1, and thank you for your answer 🙂
Yes you are correct, the period should be for 32bit instead of 16bit, forgot to change it from the STM examples which used TIM4 which is 16bit.
I think the code uses both input capture and pwm input, both on different channels, input capture on channel 2, and pwm input on channel 1:
void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)
{
if (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_2)
{
/* Get the Input Capture value */
uwIC2Value = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_2);
if (uwIC2Value != 0)
{
/* Duty cycle computation */
uwDutyCycle = ((HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1)) * 100) / uwIC2Value;
/* uwFrequency computation
TIM4 c
ounter clock = (RCC_Clocks.HCLK_Frequency) */
uwFrequency = (HAL_RCC_GetHCLKFreq()) / uwIC2Value;
}
else
{
uwDutyCycle = 0;
uwFrequency = 0;
}
}
}
That atleast is how I understood the example but my experience with IC and PWM is limited. Or have I misunderstood you and you mean the example only sets up a PWM input? How would i go about changing this to use input capture then?
