set LPUART TX pin to level 1 while in Stopmode2 (STM32L476)

[Mich1]

Hello,

How can I set the STM32L476 LPUART TX to level 1 while the device is in StopMode2?

The LPUART clock is the LSE clock.

Best regards

Mich.

[Mohamed Aymen HZAMI]

Hello Michel,

During the STOP 2 the CPU is clocked-off, you cannot set the LPUART configuration.

To do this, you must wake up from STOP 2, define your configuration and enter it again..

Best regards,

Mohamed Aymen.

[Mich1]

The cubeMX exemple only uses HSI clock. During the stop mode 2 the LPUART TX pin stays at level 1.

[Mohamed Aymen HZAMI]

Hello Michel,

Which register do you use to set the LPUART TX pin level ?

Best Regards,

Mohamed Aymen.

[Mich1]

I do not use register to set TX pin level.

I received an help from the distributor. Issue was related to a too fast enter in stop mode.

[Amel NASRI]

Hi Michel,

Glad to see that you resolved your issue.

It would be helpful for other members to share your experience and provide more details on how you fixed it.

-Amel