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seperate time setting from validity check, if we chaneg the time we also invalidate

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Chris Liebman 2018-03-08 12:40:03 -08:00
parent 49a69c7cad
commit 7f45ec04bf
1 changed files with 43 additions and 41 deletions
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84
GPS.cpp
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@ -122,52 +122,54 @@ void GPS::process()
getTime(&tv); getTime(&tv);
logger.debug(TAG, "'%s'", _nmea.getSentence()); logger.debug(TAG, "'%s'", _nmea.getSentence());
const char * id = _nmea.getMessageID();
//
// if it was a GGA and its valid then check and maybe update the time
//
if (_nmea.getYear() > 2000 && strcmp("RMC", id) == 0)
{
struct tm tm;
tm.tm_year = _nmea.getYear() - 1900;
tm.tm_mon = _nmea.getMonth() - 1;
tm.tm_mday = _nmea.getDay();
tm.tm_hour = _nmea.getHour();
tm.tm_min = _nmea.getMinute();
tm.tm_sec = _nmea.getSecond();
time_t new_seconds = mktime(&tm);
//
// we only update seconds if the message arrived in the last half of a second,
// if its in the first half then its most likely delayed from the previous second.
time_t old_seconds = _seconds;
if (old_seconds != new_seconds)
{
if (!_nmea_late)
{
_seconds = new_seconds;
invalidate("seconds adjusted!");
logger.info(TAG, "adjusting seconds from %lu to %lu from:'%s'", old_seconds, new_seconds, _nmea.getSentence());
}
else
{
logger.debug(TAG, "ignoring late NMEA time: '%s'",_nmea.getSentence());
}
}
_nmea_late = false;
_nmea_timer.attach_ms(NMEA_TIMER_MS, _timer_handler, &_nmea_timeout);
}
if (_nmea.isValid() && _nmea.getNumSatellites() >= 4) if (_nmea.isValid() && _nmea.getNumSatellites() >= 4)
{ {
// //
// if it was a GGA and its valid then check and maybe update the time // if gps was not valid, it is now
// //
const char * id = _nmea.getMessageID(); if (!_gps_valid)
if (_nmea.getYear() > 2000 && strcmp("RMC", id) == 0)
{ {
struct tm tm; _valid_delay = VALID_DELAY;
tm.tm_year = _nmea.getYear() - 1900; _gps_valid = true;
tm.tm_mon = _nmea.getMonth() - 1; logger.info(TAG, "GPS valid!");
tm.tm_mday = _nmea.getDay();
tm.tm_hour = _nmea.getHour();
tm.tm_min = _nmea.getMinute();
tm.tm_sec = _nmea.getSecond();
time_t new_seconds = mktime(&tm);
//
// we only update seconds if the message arrived in the last half of a second,
// if its in the first half then its most likely delayed from the previous second.
time_t old_seconds = _seconds;
if (old_seconds != new_seconds)
{
if (!_nmea_late)
{
_seconds = new_seconds;
logger.info(TAG, "adjusting seconds from %lu to %lu from:'%s'", old_seconds, new_seconds, _nmea.getSentence());
}
else
{
logger.debug(TAG, "ignoring late NMEA time: '%s'",_nmea.getSentence());
}
}
_nmea_late = false;
_nmea_timer.attach_ms(NMEA_TIMER_MS, _timer_handler, &_nmea_timeout);
//
// if gps was not valid, it is now
//
if (!_gps_valid)
{
_valid_delay = VALID_DELAY;
_gps_valid = true;
logger.info(TAG, "GPS valid!");
}
} }
} }
else /* nmea not valid or sat count < 4 */ else /* nmea not valid or sat count < 4 */