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Sync time with GPS every 30 minutes

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Unless your GPS is being spoofed there isn't really a downside to
syncing more often with GPS.

I understand the RTC is very stable, but especially with powersaving now
clock drift is worse, we should sync more often.
This commit is contained in:
Wessel Nieboer
2026-01-09 04:54:51 +01:00
committed by Wessel Nieboer
parent cdd3d5f34e
commit 10f2fecd45
1 changed files with 7 additions and 0 deletions
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7
src/helpers/sensors/MicroNMEALocationProvider.h
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@@ -43,6 +43,8 @@ class MicroNMEALocationProvider : public LocationProvider {
int _pin_en;
long next_check = 0;
long time_valid = 0;
unsigned long _last_time_sync = 0;
static const unsigned long TIME_SYNC_INTERVAL = 1800000; // Re-sync every 30 minutes
public :
MicroNMEALocationProvider(Stream& ser, mesh::RTCClock* clock = NULL, int pin_reset = GPS_RESET, int pin_en = GPS_EN,RefCountedDigitalPin* peripher_power=NULL) :
@@ -129,10 +131,15 @@ public :
if (millis() > next_check) {
next_check = millis() + 1000;
// Re-enable time sync periodically when GPS has valid fix
if (!_time_sync_needed && _clock != NULL && (millis() - _last_time_sync) > TIME_SYNC_INTERVAL) {
_time_sync_needed = true;
}
if (_time_sync_needed && time_valid > 2) {
if (_clock != NULL) {
_clock->setCurrentTime(getTimestamp());
_time_sync_needed = false;
_last_time_sync = millis();
}
}
if (isValid()) {