Posted on June 22, 2017 at 09:37Hello all,
I am using two different timers(TIM2 and TIM3) in order two measure frequency and duty cycle of two independent signals.
As the example guides, i used the HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim) function to make those measurements, but I succeeded to get a measurement only for one signal.
What I have to change/add to this function in order to make those two measurements in the same time.
Thanks.
Here is the full function:
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
TIM1 counter clock = (RCC_Clocks.HCLK_Frequency) */
uwFrequency = (HAL_RCC_GetHCLKFreq()/2) / uwIC2Value;
}
else
{
uwDutyCycle = 0;
uwFrequency = 0;
}
}
}
