FIXED BEACON

src/TTGO_T-Beam_LoRa_APRS.ino

@@ -112,6 +112,7 @@ int point_avg_speed = 0, point_avg_course = 0;
 ulong min_time_to_nextTX=60000L;      // minimum time period between TX = 60000ms = 60secs = 1min
 ulong nextTX=60000L;                  // preset time period between TX = 60000ms = 60secs = 1min
 ulong time_to_refresh = 0;
+ulong next_fixed_beacon = 0;
 #define ANGLE 60                      // angle to send packet at smart beaconing
 #define ANGLE_AVGS 3                  // angle averaging - x times
 float average_course[ANGLE_AVGS];
@@ -480,6 +481,7 @@ void loop() {
           gps_state = false;
           axp.setPowerOutPut(AXP192_LDO3, AXP202_OFF);                    // GPS OFF
           writedisplaytext("((GPSOFF))","","","","","",1);
+          next_fixed_beacon = millis() + fix_beacon_interval;
 
         }else{
           gps_state = true;
@@ -491,6 +493,14 @@ void loop() {
   if(digitalRead(BUTTON)==HIGH && key_up == false){ 
     key_up = true;
   }
+  
+  #ifdef FIXED_BEACON_EN
+    if(millis() >= next_fixed_beacon && gps_state == false){
+      next_fixed_beacon = millis() + fix_beacon_interval;
+      writedisplaytext("((AUT TX))","","","","","",1);
+      sendpacket();
+    }
+  #endif
 
   while (gpsSerial.available() > 0) {
     gps.encode(gpsSerial.read());

src/TTGO_T-Beam_LoRa_APRS_config.h

@@ -9,8 +9,9 @@
 #define KISS_PROTOCOLL                                  // If enabled send and receive data in SIMPLE KISS format to serial port
 #define CALLSIGN "SQ9MDD-11"                            // enter your callsign here - less then 6 letter callsigns please add "spaces" so total length is 6 (without SSID)
 #define DIGI_PATH "WIDE1-1"                             // one hope please (WIDE1-1)
-#define LATIDUDE_PRESET "5215.03N"                      // please in APRS notation: DDMM.mmN or DDMM.mmS
-#define LONGITUDE_PRESET "02055.59E"                    // please in APRS notation: DDDMM.mmE or DDDMM.mmW
+#define FIXED_BEACON_EN                                 // allows cyclic sending of a bicon when GPS is turned off
+#define LATIDUDE_PRESET "5215.03N"                      // please in APRS notation: DDMM.mmN or DDMM.mmS (used for manual or fixed beacon sending)
+#define LONGITUDE_PRESET "02055.59E"                    // please in APRS notation: DDDMM.mmE or DDDMM.mmW (used for manual or fixed beacon sending)
 #define APRS_SYMBOL_TABLE "/"
 #define APRS_SYMBOL "["                                 // other symbols are: "[" => RUNNER, "b" => BICYCLE, "<" => MOTORCYCLE, "R" => Recreation Vehicle
 #define MY_COMMENT "LoRa tracker"                       // add your coment here - if empty then no comment is sent
@@ -27,4 +28,5 @@
 //#define LOCAL_KISS_ECHO                               // echoing KISS frame back
 #define T_BEAM_V1_0                                     // if enabled t-beam v1.0 disabled t-beam V.0.7
 
-unsigned long max_time_to_nextTX = 360000L;             // TRANSMIT INTERVAL set here MAXIMUM time in ms(!) for smart beaconing - minimum time is always 1 min = 60 secs = 60000L !!!
+unsigned long max_time_to_nextTX  = 360000L;            // TRANSMIT INTERVAL set here MAXIMUM time in ms(!) for smart beaconing - minimum time is always 1 min = 60 secs = 60000L !!!
+unsigned long fix_beacon_interval = 1800000L;           // Fixed beacon interwal (when GPS is disabled and FIXED_BEACON_EN is enabled) 30min default