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Low Power Mode in STM32L152

Hi,
I am using the below function to enter low power mode in STM32L152, but yet the current consumption of MCU is about 4 mA. is there other configurations?

RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR,ENABLE);
PWR_EnterLowPowerRunMode(ENABLE);

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0 hamed ad over 9 years ago in reply to Gary Olson

I achieved the low power modes of MCU to about 3uA.
The following commands set the MCU to low power sleep mode:

    RCC_Configuration();
    PWR_VoltageScalingConfig(PWR_VoltageScaling_Range1);
    /* Wait Until the Voltage Regulator is ready */
    while (PWR_GetFlagStatus(PWR_FLAG_VOS) != RESET) ;
    /* Init I/O ports */
    Init_GPIOs();
    GPIO_LowPower_Config();
    Config_RCC(&SavRCC);
    ExtInt_configuration();
    SysTick->CTRL = 0;
    SetHSICLKToMSI(RCC_MSIRange_0,DIV2,NoRTC);
    SystemCoreClockUpdate();
    enableInterrupts();
    //TIM4_configuration();
    PWR_EnterSleepMode(PWR_Regulator_LowPower,PWR_SLEEPEntry_WFI);

My problem yet is that after switching between modes(RUN,LPR,LPS,..)the MCU does not enter to low power mode!

Reply

0 hamed ad over 9 years ago in reply to Gary Olson

I achieved the low power modes of MCU to about 3uA.
The following commands set the MCU to low power sleep mode:

    RCC_Configuration();
    PWR_VoltageScalingConfig(PWR_VoltageScaling_Range1);
    /* Wait Until the Voltage Regulator is ready */
    while (PWR_GetFlagStatus(PWR_FLAG_VOS) != RESET) ;
    /* Init I/O ports */
    Init_GPIOs();
    GPIO_LowPower_Config();
    Config_RCC(&SavRCC);
    ExtInt_configuration();
    SysTick->CTRL = 0;
    SetHSICLKToMSI(RCC_MSIRange_0,DIV2,NoRTC);
    SystemCoreClockUpdate();
    enableInterrupts();
    //TIM4_configuration();
    PWR_EnterSleepMode(PWR_Regulator_LowPower,PWR_SLEEPEntry_WFI);

My problem yet is that after switching between modes(RUN,LPR,LPS,..)the MCU does not enter to low power mode!

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