d4b61b0017
It requires mp_hal_time_ns() to be provided by a port. This function allows very accurate absolute timestamps. Enabled on unix, windows, stm32, esp8266 and esp32. Signed-off-by: Damien George <damien@micropython.org>
25 lines
444 B
Python
25 lines
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)
|