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mimxrt/machine_rtc: Set the microsecond value to 0.

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Set the subsecond value reported by rtc.datetime() and rtc.now() to 0.
Synchronizing the roll-over with the second change was not precise.
This commit is contained in:
robert-hh
2022-11-28 20:56:14 +01:00
committed by Damien George
parent 17ab2f671b
commit 913f9ad5ad
1 changed files with 2 additions and 4 deletions
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6
ports/mimxrt/machine_rtc.c
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@@ -38,7 +38,6 @@ typedef struct _machine_rtc_obj_t {
// Singleton RTC object. // Singleton RTC object.
STATIC const machine_rtc_obj_t machine_rtc_obj = {{&machine_rtc_type}}; STATIC const machine_rtc_obj_t machine_rtc_obj = {{&machine_rtc_type}};
uint32_t us_offset = 0;
// Start the RTC Timer. // Start the RTC Timer.
void machine_rtc_start(void) { void machine_rtc_start(void) {
@@ -83,7 +82,7 @@ STATIC mp_obj_t machine_rtc_datetime_helper(size_t n_args, const mp_obj_t *args)
mp_obj_new_int(srtc_date.hour), mp_obj_new_int(srtc_date.hour),
mp_obj_new_int(srtc_date.minute), mp_obj_new_int(srtc_date.minute),
mp_obj_new_int(srtc_date.second), mp_obj_new_int(srtc_date.second),
mp_obj_new_int((ticks_us64() + us_offset) % 1000000), mp_obj_new_int(0),
}; };
return mp_obj_new_tuple(8, tuple); return mp_obj_new_tuple(8, tuple);
} else { } else {
@@ -104,7 +103,6 @@ STATIC mp_obj_t machine_rtc_datetime_helper(size_t n_args, const mp_obj_t *args)
if (SNVS_LP_SRTC_SetDatetime(SNVS, &srtc_date) != kStatus_Success) { if (SNVS_LP_SRTC_SetDatetime(SNVS, &srtc_date) != kStatus_Success) {
mp_raise_ValueError(NULL); mp_raise_ValueError(NULL);
} }
us_offset = (1000000 + mp_obj_get_int(items[7]) - ticks_us64() % 1000000) % 1000000;
return mp_const_none; return mp_const_none;
} }
@@ -127,7 +125,7 @@ STATIC mp_obj_t machine_rtc_now(mp_obj_t self_in) {
mp_obj_new_int(srtc_date.hour), mp_obj_new_int(srtc_date.hour),
mp_obj_new_int(srtc_date.minute), mp_obj_new_int(srtc_date.minute),
mp_obj_new_int(srtc_date.second), mp_obj_new_int(srtc_date.second),
mp_obj_new_int((ticks_us64() + us_offset) % 1000000), mp_obj_new_int(0),
mp_const_none, mp_const_none,
}; };
return mp_obj_new_tuple(8, tuple); return mp_obj_new_tuple(8, tuple);