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Author SHA1 Message Date
Damien George 35a6f6231e tests/extmod/utime_time_ns.py: Relax bounds on time_ns measurement. 
Some devices have lower precision than 1ms for time_ns() (eg PYBv1.x has
3.9ms resolution of the RTC) so make the test more lenient for them.

Signed-off-by: Damien George <damien@micropython.org>
 2021-02-01 18:44:28 +11:00
Damien George d4b61b0017 extmod/utime_mphal: Add generic utime.time_ns() function. 
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>
 2020-10-01 14:20:42 +10:00