micropython/tests/extmod/utime_time_ns.py

25 wiersze
444 B
Python

# test utime.time_ns()
try:
import utime
utime.sleep_us
utime.time_ns
except (ImportError, AttributeError):
print("SKIP")
raise SystemExit
t0 = utime.time_ns()
utime.sleep_us(1000)
t1 = utime.time_ns()
# Check that time_ns increases.
print(t0 < t1)
# Check that time_ns counts correctly, but be very lenient with the upper bound (50ms).
if 950000 < t1 - t0 < 50000000:
print(True)
else:
print(t0, t1, t1 - t0)