circuitpython/tests/extmod/uasyncio_micropython.py

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# Test MicroPython extensions on CPython asyncio:
# - sleep_ms
# - wait_for_ms
try:
import utime, uasyncio
except ImportError:
print("SKIP")
raise SystemExit
async def task(id, t):
print("task start", id)
await uasyncio.sleep_ms(t)
print("task end", id)
return id * 2
async def main():
# Simple sleep_ms
t0 = utime.ticks_ms()
await uasyncio.sleep_ms(1)
print(utime.ticks_diff(utime.ticks_ms(), t0) < 100)
# When task finished before the timeout
print(await uasyncio.wait_for_ms(task(1, 5), 50))
# When timeout passes and task is cancelled
try:
print(await uasyncio.wait_for_ms(task(2, 50), 5))
except uasyncio.TimeoutError:
print("timeout")
print("finish")
uasyncio.run(main())