Posted on February 21, 2016 at 16:19In addition HAL_TIM_PeriodElapsedCallback() function implemented in stm32l1xx_hal_timebase_TIM.c is
/**
* @brief Period elapsed callback in non blocking mode
* @note This function is called when TIM3 interrupt took place, inside
* HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment
* a global variable ''uwTick'' used as application time base.
* @param htim : TIM handle
* @retval None
*/
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
HAL_IncTick();
}
and have no checking of Callback source, thus any other timer interrupt (if enabled) can lead to the call of this function. It is more correct to use if-condition, like below
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
if(htim->Instance == TIM3) HAL_IncTick();
}
