micropython/tests/extmod/asyncio_basic.py

46 lines
832 B
Python

try:
import asyncio
except ImportError:
print("SKIP")
raise SystemExit
import time
if hasattr(time, "ticks_ms"):
ticks = time.ticks_ms
ticks_diff = time.ticks_diff
else:
ticks = lambda: int(time.time() * 1000)
ticks_diff = lambda t1, t0: t1 - t0
async def delay_print(t, s):
await asyncio.sleep(t)
print(s)
async def main():
print("start")
await asyncio.sleep(0.001)
print("after sleep")
t0 = ticks()
await delay_print(0.2, "short")
t1 = ticks()
await delay_print(0.4, "long")
t2 = ticks()
await delay_print(-1, "negative")
t3 = ticks()
print(
"took {} {} {}".format(
round(ticks_diff(t1, t0), -2),
round(ticks_diff(t2, t1), -2),
round(ticks_diff(t3, t2), -2),
)
)
asyncio.run(main())