Usage of asyncio.wait_for

[krishnak]

I have two esp 32 boards running micropython.

On Board A an interrupt occurs
the interrupt starts a asyncio task like this and returns
asyncio.run(self.delayedEvent(eventNumber,False))
the delayedEvent sends a message to Board B and waits for a response
Board B may respond or may not respond.

I have an asyncio task in Board A waiting for responses from B which adds them to a Queue

It sets a responseEvent - asnycio event

I want to wait on the event but since the event may not even occur, I have to time out, Hence I tried

                asyncio.wait_for(responseQueueEvent.wait(),1)        
               or                  asyncio.wait_for(responseQueueEvent,1) 

the above doesn't wait at all, can you please correct the syntax or my misinterpretation that this is how this is done!

[peterhinch]

This is an odd use of asyncio.run. The best way to interface between interrupts and uasyncio is to use ThreadSafeFlag; see also this ref. You might also want to read these notes on the use of timeouts - it looks like you're missing an await.

[krishnak]

Thanks, while waiting for an answer, I did venture in to that route i.e to use ThreadSafeFlag - now it is better. Thank you for your tutorial, I have raised a question as an issue on your Queue implementation in your repository. I look forward to your input on that too.

[peterhinch]

I think you should start from square one with uasyncio, working through examples in the tutorial so that you learn the basic concepts. It's an easier route than trial and error.