Posted on July 03, 2014 at 20:32How change this function to read frequency and dutycycle of 4 different pwm signals?
void TIM4_IRQHandler(void){
RCC_ClocksTypeDef RCC_Clocks;
RCC_GetClocksFreq(&RCC_Clocks);
/* Clear TIM4 Capture compare interrupt pending bit */
TIM_ClearITPendingBit(TIM4, TIM_IT_CC2);
/* Get the Input Capture value */
IC2Value = TIM_GetCapture2(TIM4);
if (IC2Value != 0)
{
/* Duty cycle computation */
DutyCycleB7 = (TIM_GetCapture1(TIM4) * 100) / IC2Value;
/* Frequency computation
TIM4 counter clock = (RCC_Clocks.HCLK_Frequency)/2 */
FrequencyB7 = ((RCC_Clocks.HCLK_Frequency)/2 /(IC2Value));
}
else
{
DutyCycleB7 = 0;
FrequencyB7 = 0;
}
}
