Asyncio helper support for busio.UART, pin changes, other peripherals

[furbrain]

I've been programming on raspberry Pi for some time and love using the asyncio mechanisms for creating event driven programs. More recently I've started developing a product using the Seeed nRF52840 Sense board, using CircuitPython. I see we've got asyncio support, but there doesn't seem to be any async oriented libraries.

e.g

I would like to be able to do:

async def buttonAction(pin: DigitalInOut):
    while True:
        await pinChanged(pin, RISING_EDGE)
        #do some action here

async def uartRespodner(uart: busio.UART):
    while True:
        line = await asyncReadline(uart)
        uart.write(line)

I know we can use the countio stuff as per the asyncio tutorial, but that seems a bit long winded for what should be a fairly simple operation. I think having an async wrapper around anything that has a "file-like" interface (read, read_into, readline, write), should also be fairly straightforwards.

I'm willing to create this library if you feel it is a good idea, but I would welcome suggestions for a) what to call it and b) how to structure it.

Phil

[furbrain]

Looks like the Stream wrapper in asyncio actually does what I want. May need documentation update, I will investigate