not working RTO in STOP1 mode STM32G030

[RusikOk]

Hi! 
I use LL drivers to work with UART as follows:

	LL_USART_SetRxTimeout(USART1, 3 * 11);
	LL_USART_EnableRxTimeout(USART1);
	LL_USART_ClearFlag_RTO(USART1);
	LL_USART_EnableIT_RTO(USART1);

	LL_USART_EnableIT_RXNE(USART1);

and it works fine until I switch the MK to STOP1 mode 

	HAL_SuspendTick(); 
	HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI); // STOP1 
	HAL_ResumeTick();

What do I need to do to get this to work in STOP1 mode?

[Pavel A.]

What means “not working” exactly: the RXNE interrupt does not occur? RTO interrupt does not occur?

[RusikOk]

RXNE - working

RTO - not working

void USART1_IRQHandler(void)
{
  /* USER CODE BEGIN USART1_IRQn 1 */
	if(LL_USART_IsActiveFlag_WKUP(USART1) && LL_USART_IsEnabledIT_WKUP(USART1)) // Check WUF flag value in ISR register 
	{
		LL_USART_DisableIT_WKUP(USART1); // Disable the UART Wake UP from stop mode Interrupt
		LL_USART_ClearFlag_WKUP(USART1); // WUF flag clearing
	}

	if(LL_USART_IsActiveFlag_RTO(USART1) && LL_USART_IsEnabledIT_RTO(USART1)) // обработка таймаута
	{
		LL_USART_ClearFlag_RTO(USART1); // Clear the RTO flag to rearm it for the next transmission
	}	

	if(LL_USART_IsActiveFlag_RXNE(USART1) && LL_USART_IsEnabledIT_RXNE(USART1))
	{
...........

 

[Pavel A.]

Maybe, a similar issue to this? STM32F4 - HAL_Delay() not working correctly after waking from Stop mode | Community