import utime
try:
utime.sleep_ms
except AttributeError:
print("SKIP")
raise SystemExit
utime.sleep_ms(1)
utime.sleep_us(1)
print(utime.ticks_diff(utime.ticks_ms(), utime.ticks_ms()) <= 1)
print(utime.ticks_diff(utime.ticks_us(), utime.ticks_us()) <= 500)