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STM32F0 deep sleep with TIM1 as time-base source

Ariel G
Associate II
Posted on April 09, 2018 at 10:49

Hi,

I having a problem to get in sleep mode when using TIM1 as time-base source instead sysTick.

When using sysTick I'm able to enter sleep mode with no problem.

I wish to use TIM1 as time-base source to be able to use freeRTOS in the future.

What is wrong with this simple example?

while (1)

{

    blinkLED();

    if(btnPressed)

    {

      HAL_SuspendTick();

      HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);

      HAL_ResumeTick();

    }

  }

void blinkLED()

{

  HAL_GPIO_WritePin(LED3_GPIO_Port, LED3_Pin, 0);

  HAL_Delay(100);

  HAL_GPIO_WritePin(LED3_GPIO_Port, LED3_Pin, 1);

  HAL_Delay(100);

}

void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)

{

  if (GPIO_Pin == BTN_Pin)

  {

    if(btnPressed)

      btnPressed = 0;

    else

      btnPressed = 1;

  }

}
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