From f3e7feaccddd5bc249be06dadd7cc96d10dcee22 Mon Sep 17 00:00:00 2001 From: Serhii Voloshynov Date: Thu, 3 Dec 2020 12:59:37 +0200 Subject: [PATCH] ubx time leap seconds --- driver_ubx.c | 128 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 127 insertions(+), 1 deletion(-) diff --git a/driver_ubx.c b/driver_ubx.c index 6464d94..a5f3737 100644 --- a/driver_ubx.c +++ b/driver_ubx.c @@ -61,6 +61,29 @@ #define UBX_CFG_LEN 20 #define outProtoMask 14 +#ifdef UBLOXTIMELS_ENABLE +/* UBX-NAV-TIMELS support */ +static char *srcOfCurrLs[] = { + "firmware", + "GPS GLONASS difference", + "GPS", + "SBAS", + "BeiDou", + "Galileo", + "Aided data", + "Configured" +}; +static char *srcOfLsChange[] = { + "No Source", + "Undefined", + "GPS", + "SBAS", + "BeiDou", + "Galileo", + "GLONOSS", +}; +#endif /* UBLOXTIMELS_ENABLE */ + static gps_mask_t ubx_parse(struct gps_device_t *session, unsigned char *buf, size_t len); static gps_mask_t ubx_msg_nav_eoe(struct gps_device_t *session, @@ -810,6 +833,90 @@ static void ubx_msg_nav_timels(struct gps_device_t *session, } } +#ifdef UBLOXTIMELS_ENABLE +/** + * Navigation time to leap second + * + * Sets leap_notify if leap second is < 23 hours away. + */ +static void +ubx_msg_nav_timels(struct gps_device_t *session, unsigned char *buf, + size_t data_len) +{ + int version; + unsigned int flags; + int valid_curr_ls; + int valid_time_to_ls_event; + + if (data_len != 24) { + gpsd_log(&session->context->errout, LOG_WARN, + "UBX-NAV-TIMELS: unexpected length %d, expecting 24\n", + data_len); + return; + } + version = getsb(buf,4); + /* Only version 0 is defined so far. */ + flags = (unsigned int)getub(buf, 23); + gpsd_log(&session->context->errout, LOG_DATA, + "UBX-NAV-TIMELS: flags 0x%x message version %d\n",flags, version); + valid_curr_ls = flags & UBX_TIMELS_VALID_CURR_LS; + valid_time_to_ls_event = flags & UBX_TIMELS_VALID_TIME_LS_EVT; + if(valid_curr_ls) { + unsigned int src_of_curr_ls = getub(buf,8); + int curr_ls = getsb(buf,9); + char *src = "Unknown"; + + if(src_of_curr_ls < (sizeof srcOfCurrLs/(sizeof srcOfCurrLs[0]))) + src = srcOfCurrLs[src_of_curr_ls]; + + gpsd_log(&session->context->errout, LOG_DATA, + "UBX-NAV-TIMELS: source_of_current_leapsecond=%u:%s curr_ls=%d\n", + src_of_curr_ls,src,curr_ls); + session->context->leap_seconds = curr_ls; + session->context->valid |= LEAP_SECOND_VALID; + } /* Valid current leap second */ + if(valid_time_to_ls_event) { + char *src="Unknown"; + unsigned int src_of_ls_change; + unsigned short dateOfLSGpsWn, dateOfLSGpsDn; + int lsChange = getsb(buf,11); + int timeToLsEvent = getles32(buf,12); + src_of_ls_change = getub(buf,10); + if(src_of_ls_change < (sizeof srcOfLsChange/(sizeof srcOfLsChange[0]))) + src = srcOfLsChange[src_of_ls_change]; + dateOfLSGpsWn = getles16(buf,16); + dateOfLSGpsDn = getles16(buf,18); + gpsd_log(&session->context->errout, LOG_DATA, + "UBX_NAV_TIMELS: source_of_leapsecond_change=%u:%s " + "leapSecondChage=%d timeToLsEvent=%d\n", + src_of_ls_change,src,lsChange,timeToLsEvent); + gpsd_log(&session->context->errout, LOG_DATA, + "UBX_NAV_TIMELS: dateOfLSGpsWn=%d dateOfLSGpsDn=%d\n", + dateOfLSGpsWn,dateOfLSGpsDn); + if(timeToLsEvent < 60*60*23 && timeToLsEvent > 0) { + if(lsChange == 0) + session->context->leap_notify = LEAP_NOWARNING; + else if (lsChange == 1) + session->context->leap_notify = LEAP_ADDSECOND; + else if (lsChange == -1) + session->context->leap_notify = LEAP_DELSECOND; + } else + session->context->leap_notify = LEAP_NOWARNING; + + if (session->context->leap_notify == LEAP_ADDSECOND) + gpsd_log(&session->context->errout,LOG_INF, + "UBX_NAV_TIMELS: Add leap second today\n"); + else if (session->context->leap_notify == LEAP_DELSECOND) + gpsd_log(&session->context->errout,LOG_INF, + "UBX_NAV_TIMELS: Remove leap second today\n"); + + gpsd_log(&session->context->errout, LOG_DATA, + "UBX_NAV_TIMELS: leaving: leap_notify=%d\n", + session->context->leap_notify); + } +} +#endif /* UBLOXTIMELS_ENABLE */ + /** * Geodetic position solution message * UBX-NAV-POSLLH, Class 1, ID 2 @@ -1767,7 +1874,10 @@ gps_mask_t ubx_parse(struct gps_device_t * session, unsigned char *buf, mask = ubx_msg_nav_timegps(session, &buf[UBX_PREFIX_LEN], data_len); break; case UBX_NAV_TIMELS: - ubx_msg_nav_timels(session, &buf[UBX_PREFIX_LEN], data_len); + gpsd_log(&session->context->errout, LOG_DATA, "UBX_NAV_TIMELS\n"); +#ifdef UBLOXTIMELS_ENABLE + ubx_msg_nav_timels(session, &buf[UBX_PREFIX_LEN],data_len); +#endif // UBLOXTIMELS_ENABLE break; case UBX_NAV_TIMEUTC: gpsd_log(&session->context->errout, LOG_DATA, "UBX-NAV-TIMEUTC\n"); @@ -1811,6 +1921,7 @@ gps_mask_t ubx_parse(struct gps_device_t * session, unsigned char *buf, gpsd_log(&session->context->errout, LOG_DATA, "UBX-RXM-RTCM\n"); break; case UBX_RXM_SFRB: + gpsd_log(&session->context->errout, LOG_DATA, "UBX_RXM_SFRB\n"); mask = ubx_rxm_sfrb(session, &buf[UBX_PREFIX_LEN], data_len); break; case UBX_RXM_SFRBX: @@ -2154,11 +2265,19 @@ static void ubx_cfg_prt(struct gps_device_t *session, msg[2] = 0x00; /* rate */ (void)ubx_write(session, 0x06u, 0x01, msg, 3); +#ifdef UBLOXTIMELS_ENABLE + msg[0] = 0x01; /* class */ + msg[1] = 0x26; /* msg id = UBX_NAV_TIMELS */ + msg[2] = 0xff; /* rate */ +#endif /* UBLOXTIMELS_ENABLE */ + (void)ubx_write(session, 0x06u, 0x01, msg, 3); + /* NAV-SVINFO became NAV-SAT */ msg[0] = 0x01; /* class */ msg[1] = 0x30; /* msg id = NAV-SVINFO */ msg[2] = 0x00; /* rate */ (void)ubx_write(session, 0x06u, 0x01, msg, 3); + msg[0] = 0x01; /* class */ msg[1] = 0x35; /* msg id = NAV-SAT */ msg[2] = 0x00; /* rate */ @@ -2263,6 +2382,13 @@ static void ubx_cfg_prt(struct gps_device_t *session, msg[2] = 0x01; /* rate */ (void)ubx_write(session, 0x06u, 0x01, msg, 3); +#ifdef UBLOXTIMELS_ENABLE + msg[0] = 0x01; /* class */ + msg[1] = 0x26; /* msg id = UBX_NAV_TIMELS */ + msg[2] = 0xff; /* rate */ + (void)ubx_write(session, 0x06u, 0x01, msg, 3); +#endif /* UBLOXTIMELS_ENABLE */ + /* UBX-NAV-SVINFO deprecated in u-blox 8, gone in u-blox 9. * Use UBX-NAV-SAT after u-blox 7 */ if (10 > session->driver.ubx.protver) { -- 2.7.4