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Add an overloaded method for updateNTP returns mS correction amount #95

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Add an overloaded method for updateNTP returns mS correction amount #95

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15 changes: 11 additions & 4 deletions src/ezTime.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -371,23 +371,30 @@ namespace ezt {
#ifdef EZTIME_NETWORK_ENABLE

void updateNTP() {
updateNTP(nullptr);
}

void updateNTP(int32_t *correction) {
deleteEvent(updateNTP); // Delete any events pointing here, in case called manually
time_t t;
unsigned long measured_at;
if (queryNTP(_ntp_server, t, measured_at)) {
int32_t correction = ( (t - _last_sync_time) * 1000 ) - ( measured_at - _last_sync_millis );
int32_t lcorrection = ( (t - _last_sync_time) * 1000 ) - ( measured_at - _last_sync_millis );
if (correction) {
*correction = lcorrection;
}
_last_sync_time = t;
_last_sync_millis = measured_at;
_last_read_ms = ( millis() - measured_at) % 1000;
info(F("Received time: "));
info(UTC.dateTime(t, F("l, d-M-y H:i:s.v T")));
if (_time_status != timeNotSet) {
info(F(" (internal clock was "));
if (!correction) {
if (!lcorrection) {
infoln(F("spot on)"));
} else {
info(String(abs(correction)));
if (correction > 0) {
info(String(abs(lcorrection)));
if (lcorrection > 0) {
infoln(F(" ms fast)"));
} else {
infoln(F(" ms slow)"));
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1 change: 1 addition & 0 deletions src/ezTime.h
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Expand Up @@ -200,6 +200,7 @@ namespace ezt {
void setInterval(const uint16_t seconds = 0);
void setServer(const String ntp_server = NTP_SERVER);
void updateNTP();
void updateNTP(int32_t *correction);
bool waitForSync(const uint16_t timeout = 0);
time_t lastNtpUpdateTime();
#endif
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