Clear pending interrupts STM32F411

[davefes]

I am a beginner when it comes to interrupts in Micropython. After struggling with an ESP32 I decided to move to a bare-metal thinking the RTOS was getting in the way.

What I thought I wanted to do was after servicing a wanted interrupt that I would clear any pending interrupts, say after 1 second. Then wait for the next wanted interrupt, which could be minutes later.

The project it a traffic light system. I thought I'd use interrupts to move to the next state AND that would allow me to flash the lights to save power.

Is asyncio a better solution?

Thanks for any suggestions.

PS Fortunately, disabling interrupts and only enabling the next expected interrupt seems to provide a lot more reliability.

[davefes]

Appears the best thing to do is to disable interrupts, not clear them.

https://community.st.com/t5/stm32-mcus-products/how-to-clear-all-pending-interrupts/td-p/61696