Štefan Sebeš

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11 years, 10 months ago.

How to STANDBY mode

Hello.

How to set NUCLEO with ST32F411RE to standby mode with (Standby: 2.4 μA)μA power consumption?

Thanks.

http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00115249.pdf

Question relating to:

Last updated: 06 Oct 2017

PWR_EnterSTANDBYMode(); Seems to be working for me. Need to use the RTC to wake up. http://mbed.org/users/Sissors/code/WakeUp/ makes setting alarms easier.

posted by Darius Wilkinson 24 Sep 2014

1 Answer

Martin Kojtal
11 years, 10 months ago.

Hello,

the mbed API provides two functions - sleep() and deepsleep(). The example uses sleep().

The implementation for 401RE as an example:

void sleep(void) {
    TimMasterHandle.Instance = TIM5;

    // Disable HAL tick interrupt
    __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC2);

    // Request to enter SLEEP mode
    HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);

    // Enable HAL tick interrupt
    __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
}

void deepsleep(void) {
    // Request to enter STOP mode with regulator in low power mode
    HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);

    // After wake-up from STOP reconfigure the PLL
    SetSysClock();
}