How to determine from which channel the capture took place?

[Siragh ASUTP]

Posted on May 01, 2017 at 08:06

Hello. I use stm32a4 and timer2 (channel 3 and channel 4) in capture mode. How to determine from which channel the capture took place?

[Tesla DeLorean]

Posted on May 01, 2017 at 18:11

Check the TIMx->SR it flags which channel(s) captured.

Use the TIMx->SR = ~CLEARTHISBIT; // not the &= RMW form

void TIM2_IRQHandler(void)

{

if(TIM_GetITStatus(TIM2, TIM_IT_CC3) == SET)

{TIM_ClearITPendingBit(TIM2, TIM_IT_CC3);Cap3 = TIM_GetCapture3(TIM2);

}

if(TIM_GetITStatus(TIM2, TIM_IT_CC4) == SET)

{TIM_ClearITPendingBit(TIM2, TIM_IT_CC4);Cap4 = TIM_GetCapture4(TIM2);

}

}

[Tesla DeLorean]

Posted on May 01, 2017 at 18:12

Duplicate Thread

https://community.st.com/0D50X00009XkdeMSAR

 

[Siragh ASUTP]

Posted on May 16, 2017 at 06:22

Thanks for the answer. I use the HAL library. Can you give an example for this library?

[Tesla DeLorean]

Posted on May 16, 2017 at 18:46

No