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Dont write guesstimates into RTC

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jpirnay
2026-04-17 23:19:42 +02:00
parent 141ec02746
commit f68fbc39e4
1 changed files with 4 additions and 2 deletions
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lib/hal/HalClock.cpp
+4 -2
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@@ -345,8 +345,8 @@ static double computeCorrectedElapsedSec(uint64_t lpNow, float tempNow) {
/// Capture current time + LP timer into RTC memory, and epoch into NVS. /// Capture current time + LP timer into RTC memory, and epoch into NVS.
static void capture(bool lpValid) { static void capture(bool lpValid) {
rtcEpoch = time(nullptr); rtcEpoch = time(nullptr);
// Update DS3231 // Update DS3231 only when the current time is authoritative.
if (initExternalRTC()) { if (initExternalRTC() && !clockApproximate) {
writeExternalRTC(rtcEpoch); writeExternalRTC(rtcEpoch);
} }
rtcLpTimeUs = esp_clk_rtc_time(); rtcLpTimeUs = esp_clk_rtc_time();
@@ -393,6 +393,8 @@ bool syncNtp() {
return false; return false;
} }
// NTP sync yields authoritative time; allow DS3231 to be updated.
clockApproximate = false;
capture(false); capture(false);
nvsWriteSyncTime(rtcEpoch); nvsWriteSyncTime(rtcEpoch);