Print date in log

Fix for #440

Author: nseidle

Firmware/RTK_Surveyor/menuMessages.ino

@@ -539,6 +539,15 @@ void beginLogging(const char *customFileName)
         createNMEASentence(CUSTOM_NMEA_TYPE_DEVICE_BT_ID, nmeaMessage, sizeof(nmeaMessage), macAddress); //textID, buffer, sizeOfBuffer, text
         ubxFile->println(nmeaMessage);
 
+        //Record today's time/date into log. This is incase a log is restarted. See issue 440: https://github.com/sparkfun/SparkFun_RTK_Firmware/issues/440
+        char currentDate[sizeof("230101,120101")];
+        snprintf(currentDate, sizeof(currentDate), "%02d%02d%02d,%02d%02d%02d",
+                 rtc.getYear() - 2000, rtc.getMonth() + 1, rtc.getDay(), //ESP32Time returns month:0-11
+                 rtc.getHour(true), rtc.getMinute(), rtc.getSecond() //ESP32Time getHour(true) returns hour:0-23
+                );
+        createNMEASentence(CUSTOM_NMEA_TYPE_CURRENT_DATE, nmeaMessage, sizeof(nmeaMessage), currentDate); //textID, buffer, sizeOfBuffer, text
+        ubxFile->println(nmeaMessage);
+
         if (reuseLastLog == true)
         {
           systemPrintln("Appending last available log");

Firmware/RTK_Surveyor/settings.h

@@ -131,6 +131,7 @@ typedef enum
   CUSTOM_NMEA_TYPE_LOGTEST_STATUS,
   CUSTOM_NMEA_TYPE_DEVICE_BT_ID,
   CUSTOM_NMEA_TYPE_PARSER_STATS,
+  CUSTOM_NMEA_TYPE_CURRENT_DATE,
 } customNmeaType_e;
 
 //Freeze and blink LEDs if we hit a bad error