Cant get STM32L011x Sleep mode with timer 2 interrupt every 70us.

[Sid]

Hello Every1,

Warning! I am a total noob in STM32 coding. following is my objective:

I already have a code up and running(without the sleep) that reads the ADC value every 70us. Now i want the microcontroller to sleep every 70us while its waiting for the interrupt from the Timer2. I am not showing the Interrupt Routine as it works for the Tim2 interrupt. Given below is a snippet from my main code where i am trying to config the sleep mode.

int main(void)
{
 /* MCU Configuration----------------------------------------------------------*/
 
 /* Configure the system clock */
 SystemClock_Config();
 
 /* Initialize all configured peripherals */
 MX_GPIO_Init();
 MX_ADC_Init();
 MX_LPUART1_UART_Init();
 MX_TIM2_Init();
 /* USER CODE BEGIN 2 */
 
 for(int j=0;j<=2;j++)
 {
 HAL_GPIO_TogglePin(GPIOB, LED_Red_Pin); // LED Red
 HAL_Delay(500); // 500Ms delay
 }
 
 HAL_ADC_Start(&hadc); // start ADC
 
  HAL_TIM_Base_Start_IT(&htim2); // timer set for 70us
 
 /* Infinite loop */
 /* USER CODE BEGIN WHILE */
 while (1)
 {
 HAL_SuspendTick();
 
 /* Enter Sleep Mode , wake up is done once jumper is put between PA.12 (Arduino D2) and GND */
 HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
 
 /* Resume Tick interrupt if disabled prior to SLEEP mode entry */
 HAL_ResumeTick();
	__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
 /* USER CODE END WHILE */
 
 /* USER CODE BEGIN 3 */
 }
 /* USER CODE END 3 */
 
}

The problem is i cant put my microcontroller into sleep and I am sure i am not configuring something properly. I generated the base code and configuration using STMCubeMX.

Any help in this regard is very much appreciated.

P.S I am using IAR.

Regards

Sid