Skip to main content
S
shivss
Associate III
July 29, 2025
Question

stm32u585 sleep

  • July 29, 2025
  • 4 replies
  • 449 views

hi,

 am using stm32u585iot dev board i need all power code stop and shutdown and standby code for that board?

4 replies

Andrew Neil
Andrew Neil
Super User
July 29, 2025

You mean the B-U585I-IOT02A ?

https://www.st.com/en/evaluation-tools/b-u585i-iot02a.html

 

If so, have you looked under 'Tools & Software':

https://www.st.com/en/evaluation-tools/b-u585i-iot02a.html#tools-software 

 

Also look at the STM32CubeU5 pack:

https://www.st.com/en/embedded-software/stm32cubeu5.html

whence AN5701 Introduction to STM32Cube MCU Package examples for STM32U5 MCUs:

https://www.st.com/resource/en/application_note/an5701-introduction-to-stm32cube-mcu-package-examples-for-stm32u5-mcus-stmicroelectronics.pdf

 

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
I
Imen.D
Technical Moderator
July 29, 2025

 

Hello @shivss 

I recommend you this article explains low-power modes, and provides code examples: Getting started with PWR - stm32mcu

Refer also to the PWR examples within B-U585I-IOT02A board:

STM32CubeU5/Projects/B-U585I-IOT02A/Examples/PWR at main · STMicroelectronics/STM32CubeU5 · GitHub

"When your question is answered, please close this topic by clicking ""Accept as Solution"".ThanksImen"
    S
    shivssAuthor
    Associate III
    July 30, 2025

    Hi @Imen.D @Andrew Neil 

     

    yes B-U585I-IOT02A  this board only .

    The examples in GitHub is for switch but I need with RTC timer wakeup

    S
    Saket_Om
    Technical Moderator
    July 31, 2025

    Hello @shivss 

    Did you check this example below: 

    STM32CubeL4/Projects/NUCLEO-L452RE/Examples/RTC/RTC_LowPower_STANDBY at master · STMicroelectronics/STM32CubeL4 · GitHub

    "To give better visibility on the answered topics, please click on ""Accept as Solution"" on the reply which solved your issue or answered your question.Saket_Om"
    S
    shivssAuthor
    Associate III
    July 31, 2025

    Hi ,

     its an RTC alarm not RTC Timer wakeup ?  like this?

    (HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 0, RTC_WAKEUPCLOCK_RTCCLK_DIV16, 0)

     

    S
    Saket_Om
    Technical Moderator
    August 1, 2025

    Hello @shivss 

    Are you using the LSE as RTC clock source ? 

    According to the reference manual the RTC remain active only when the RTC clock source is LSE.

    Saket_Om_1-1754045697204.png

     

     

    "To give better visibility on the answered topics, please click on ""Accept as Solution"" on the reply which solved your issue or answered your question.Saket_Om"
    S
    shivssAuthor
    Associate III
    August 4, 2025

    Hi,

     yes am using LSE 

    shivss_0-1754296803961.png

     

    Terms & ConditionsAccessibility statement