summaryrefslogtreecommitdiffstatshomepage
path: root/tests/extmod/asyncio_basic.py
blob: ca37c7bcb02120992b6c111e7e7486b8c1d8c28a (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
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())