stm32l1 wakeup on uart start bit

andrew_trowbridge · ‎2013-10-26

Posted on October 26, 2013 at 12:41

Hi

I'm wondering if there is any possibility to wake up the stm32L1 from stop mode when a start bit is detected?

with the stm32F1 there is a way of doing it:

USART_StopModeWakeUpSourceConfig(USART1, USART_WakeUpSource_StartBit);

But there is no USART_WakeUpSource_StartBit bit within the STM32L1

#stm32-discovery #usart-uart

Amel NASRI · ‎2013-10-31

Posted on October 31, 2013 at 11:43

Hi Stephen,

There is no such feature in STM32L1 compared to STM32F1.

If you enter stop mode using WFI, you can configure an interrupt that wakes-up the MCU from this mode.

-Mayla-

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