How do I implement RTC wakeup in STOP2 low power mode using the STM32WLE4C8 MCU?

SRoop.1 · ‎2023-03-27

I can make the RTC wakeup work in Standby mode, but not STOP2 mode.

Sarra.S · ‎2023-03-27

Hello @SRoop.1 and Welcome to ST Community,

Let's start by which board are you using, which example and environment

Are you using the "PWR_STOP_RTC" example provided by ST

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.

View solution in original post

Franksterb92 · ‎2023-03-27

check out https://www.st.com/resource/en/application_note/an4759-using-the-hardware-realtime-clock-rtc-and-the-tamper-management-unit-tamp-with-stm32-microcontrollers-stmicroelectronics.pdf

section 2.4.1

Sarra.S · ‎2023-03-27

Hello @SRoop.1 and Welcome to ST Community,

Let's start by which board are you using, which example and environment

Are you using the "PWR_STOP_RTC" example provided by ST

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.

SRoop.1 · ‎2023-03-27

Hi Sarra.S, thanks for your response.

I managed to try the "PWR_STOP_RTC" example on our custom board and it works.

I have ported the changes to my project and it works. Thank you.