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
