Bad operation in stm32l0xx_hal_tim.c

sebastien239955_stm1 · ‎2015-06-23

Posted on June 23, 2015 at 11:07

Hello,

I do not understand why the TIMER instance is stopped when a specific bloc is stopped.

For example, I have 2 output compare channels activated on TIM2 with interruptions.

If I use HAL_TIM_OC_Stop_IT in order to stop one of these OC bloc, the HAL ''__HAL_TIM_DISABLE(htim)'' is called and so the result is a complete stop of the TIM2 (and so my second OC is not running anymore).

I think this is not a good operation, what do you think ?

Thanks !

chrif · ‎2015-07-02

Posted on July 02, 2015 at 13:05

Hi,

The function ''__HAL_TIM_DISABLE(htim)'' disable the counter (so all the timer is stopped) only if all channels are disabled.The mask ''

CCER_CCxE_MASK

'' corresponds to CCxE bits (Capture/Compare output enable)in the TIMx_CCER register.

#define __HAL_TIM_DISABLE(__HANDLE__) \ 
do
{ \ 
if
(((__HANDLE__)->Instance->CCER & CCER_CCxE_MASK) == 0) \ 
{ \ 
(__HANDLE__)->Instance->CR1 &= ~(TIM_CR1_CEN); \ 
} \ 
} 
while
(0)

But, I'm wondering if you tested really the issue or you have concluded that the timer is stopped only by referrring to the code? Regards

sebastien239955_stm1 · ‎2015-07-03

Posted on July 03, 2015 at 09:46

Hi,

Thank you for your help and sorry because it's true that it was during my analysis of the libraries. It works properly. Thanks again !!