diff options
| author | Damien George <damien@micropython.org> | 2025-05-23 12:57:20 +1000 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2025-06-13 16:27:35 +1000 |
| commit | 398da22492d9e593f87f0b9ae4fc043f8b2b8a11 (patch) | |
| tree | d4c164106d1a2de870a4c065b33b3e81248e14c8 /extmod/machine_pulse.c | |
| parent | ef21ade602116421db2734d23320401ac6669773 (diff) | |
esp8266/modmachine: Use common machine_time_pulse_us implementation.
Testing shows that for frequencies which the esp8266 can handle -- up to
about 1kHz -- `machine.time_pulse_us()` now gives more accurate results.
Prior to this commit it would measure on average about 1us lower, but now
the average is much closer to the true value. For example a pulse that is
1000us long, it would measure between 998 and 1000us. Now it measures
between 999us and 1001us.
Signed-off-by: Damien George <damien@micropython.org>
Diffstat (limited to 'extmod/machine_pulse.c')
| -rw-r--r-- | extmod/machine_pulse.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/extmod/machine_pulse.c b/extmod/machine_pulse.c index 1ec4d5f08..b78a63f18 100644 --- a/extmod/machine_pulse.c +++ b/extmod/machine_pulse.c @@ -30,7 +30,7 @@ #if MICROPY_PY_MACHINE_PULSE -MP_WEAK mp_uint_t machine_time_pulse_us(mp_hal_pin_obj_t pin, int pulse_level, mp_uint_t timeout_us) { +mp_uint_t machine_time_pulse_us(mp_hal_pin_obj_t pin, int pulse_level, mp_uint_t timeout_us) { mp_uint_t nchanges = 2; mp_uint_t start = mp_hal_ticks_us(); for (;;) { |