STM32L476 wakeup by PA0 from deepsleep

[Sunghwan_Chung]

How can I make STM32L476 wake-up from deepsleep by pull-up the PA0 port.

I think additional register setting need like a pyboard (https://github.com/micropython/micropython/issues/3834).

[shaoziyang]

You need set EWUP1 bit in registry PWR_CR3.

Code: Select all

import stm

A0 = Pin('A0', Pin.IN, pull=Pin.PULL_DOWN) 
stm.mem32[stm.PWR+0x08] |= 1

[Sunghwan_Chung]

Thanks it works.

You need set EWUP1 bit in registry PWR_CR3.

Code: Select all

import stm

A0 = Pin('A0', Pin.IN, pull=Pin.PULL_DOWN) 
stm.mem32[stm.PWR+0x08] |= 1