Posted on May 28, 2018 at 17:01Hello,
I'm using STM32L452 for my project and I'm trying to use shutdown mode, but I'm getting very high current consumption ~1mA but with STOP1 mode the current consumption is only 65uA (Its according to spec because I have additional load)
I used the examples from cubeL4 ver 1.8
STOP1 function: (65uA)
HAL_SuspendTick();
HAL_PWREx_EnterSTOP1Mode(PWR_STOPENTRY_WFI);
HAL_ResumeTick();
Shutdown function: (1mA)
HAL_PWREx_EnableGPIOPullDown(PWR_GPIO_C, PWR_GPIO_BIT_13);
HAL_PWREx_EnableGPIOPullUp(PWR_GPIO_A, PWR_GPIO_BIT_2);
HAL_PWREx_EnablePullUpPullDownConfig();
/* Disable all used wakeup sources: WKUP pin */
HAL_PWR_DisableWakeUpPin(PWR_WAKEUP_PIN2);
HAL_PWR_DisableWakeUpPin(PWR_WAKEUP_PIN4);
/ * Clear wake up Flag */
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
/* Enable wakeup pin WKUP2 WKUP4 */
HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN2_HIGH);
HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN4_LOW);
HAL_PWREx_EnterSHUTDOWNMode();
Please assist
Regards,
Michael
