MicroPython Forum (Archive)

Of more interest to my purpose is the ability to terminate specific coroutines. I discovered that Cancellable coroutines can be assigned to groups in their construction , see the example code below, but specifically loop.create_task(asyn.Cancellable(file_write_append, 'async_test.txt', group='a' )()...

Wow, I'm amazed that the cancellable option gives such a neat solution. It is interesting that the only essential differences between my original naive code and the cancellable version, without the explicit try except block, is the addition of the @asyn.cancellable decorator and the use of await asy...

Figuring out how to use the synchronisation primitives was fun. Appending works well [open(filename, 'a')], but as suggested by the name, it will append to that file on subsequent runs of the code. Use of barriers to synchronise the termination of the event loop with the closing of the file is more ...

I am writing a data logger that uses one coroutine to write data continuously to a file and another coroutine to terminate the event loop. I am finding that if the loop is terminated before the "with open('filename') as f" loop completes, the file is never closed. The code below shows the essential ...

Thanks @Pythoncoder, works nicely. But anyone having problems getting it to work should make sure they are using uasyncio 2.0 and hence the latest pyboard firmware (which we should all be doing anyway!). My first attempt failed because I was using uasyncio 1.0. And it is my understanding that uasync...

Thanks @Pythoncoder, that makes me feel a whole lot less stupid!

I am trying to download the latest version of uasyncio using upip but keep running into the same error. I feel I am doing something obviously wrong but cant figure it out on my own. (What is really annoying is that I got this to work in March but can't figure out what I did correct!) output from mic...

Is there a simple way to get the number of tasks queued in the event loop?

I think I have written a program that adds a new task every time one task is run, and need to check my understanding of what is happening.

Asynchronous programming requires a rather different mindset but once you've got the hang of it, it's magic ;) @pythoncoder I would thoroughly agree with this. I am just starting to get my head around uasyncio and the asyn.Event class in particular. For me, it makes the software feel more like hard...

... actually I dont think I need to get my soldering iron out to run this code! I have just realised that with these new fangled microcontrollers like the STM32 they actually have the pull up and pull down resistors built in! so you don’t have to solder up a little circuit with a switch and a 10k pu...