gpsd 3.23 (API 12) compatibility and cleanups.

CHANGES.md

@@ -17,7 +17,11 @@
 
 - The BEACON configuration now recognizes the SOURCE= option.  This replaces the AX.25 source address rather than using the MYCALL value for the channel.  This is useful for sending more than 5 analog telemetry channels.  Use two, or more, source addresses with up to 5 analog channels each.
 
+- For more flexibility, the FX.25 transmit property can now be set individually by channel, rather than having a global setting for all channels.  The -X on the command line applies only to channel 0.  For other channels you need to add a new line to the configuration file.
 
+    > After:   "CHANNEL 1"   (or other channel)
+    >
+    > Add:     "FX25TX 1" (or 16 or 32 or 64)
 
 
 ## Version 1.6  --  October 2020 ##

src/ax25_link.c

@@ -26,6 +26,10 @@
  *		Establish connections and transfer data in the proper
  *		order with retries.
  *
+ *		Using the term "data link" is rather unfortunate because it causes
+ *		confusion to someone familiar with the OSI networking model.
+ *		This corresponds to the layer 4 transport, not layer 2 data link.
+ *
  * Description:	
  *
  *		Typical sequence for establishing a connection
@@ -824,6 +828,11 @@ static ax25_dlsm_t *get_link_handle (char addrs[AX25_MAX_ADDRS][AX25_MAX_ADDR_LE
 // Create new data link state machine.
 
 	p = calloc (sizeof(ax25_dlsm_t), 1);
+	if (p == NULL) {
+	  text_color_set(DW_COLOR_ERROR);
+	  dw_printf ("FATAL ERROR: Out of memory.\n");
+	  exit (EXIT_FAILURE);
+	}
 	p->magic1 = MAGIC1;
 	p->start_time = dtime_now();
 	p->stream_id = next_stream_id++;
@@ -1493,6 +1502,11 @@ void dl_register_callsign (dlq_item_t *E)
 	}
 
 	r = calloc(sizeof(reg_callsign_t),1);
+	if (r == NULL) {
+	  text_color_set(DW_COLOR_ERROR);
+	  dw_printf ("FATAL ERROR: Out of memory.\n");
+	  exit (EXIT_FAILURE);
+	}
 	strlcpy (r->callsign, E->addrs[0], sizeof(r->callsign));
 	r->chan = E->chan;
 	r->client = E->client;

src/decode_aprs.c

@@ -1377,10 +1377,15 @@ static void aprs_mic_e (decode_aprs_t *A, packet_t pp, unsigned char *info, int
 
 #define isT(c) ((c) == ' ' || (c) == '>' || (c) == ']' || (c) == '`' || (c) == '\'')
 
-// Last updated Sept. 2016 for TH-D74A
+// Last Updated Dec. 2021
+
+// This does not change very often but I'm wondering if we could simply parse
+// http://www.aprs.org/aprs12/mic-e-types.txt similar to how we use tocalls.txt.
 
 	if (isT(*pfirst)) {
 
+// "legacy" formats.
+	
 	  if      (*pfirst == ' '                                       )  { strlcpy (A->g_mfr, "Original MIC-E", sizeof(A->g_mfr)); pfirst++; }
 
 	  else if (*pfirst == '>'                       && *plast == '=')  { strlcpy (A->g_mfr, "Kenwood TH-D72", sizeof(A->g_mfr)); pfirst++; plast--; }
@@ -1390,6 +1395,8 @@ static void aprs_mic_e (decode_aprs_t *A, packet_t pp, unsigned char *info, int
 	  else if (*pfirst == ']'                       && *plast == '=')  { strlcpy (A->g_mfr, "Kenwood TM-D710", sizeof(A->g_mfr)); pfirst++; plast--; }
 	  else if (*pfirst == ']'                                       )  { strlcpy (A->g_mfr, "Kenwood TM-D700", sizeof(A->g_mfr)); pfirst++; }
 
+// ` should be used for message capable devices.
+
 	  else if (*pfirst == '`'  && *(plast-1) == '_' && *plast == ' ')  { strlcpy (A->g_mfr, "Yaesu VX-8", sizeof(A->g_mfr)); pfirst++; plast-=2; }
 	  else if (*pfirst == '`'  && *(plast-1) == '_' && *plast == '"')  { strlcpy (A->g_mfr, "Yaesu FTM-350", sizeof(A->g_mfr)); pfirst++; plast-=2; }
 	  else if (*pfirst == '`'  && *(plast-1) == '_' && *plast == '#')  { strlcpy (A->g_mfr, "Yaesu VX-8G", sizeof(A->g_mfr)); pfirst++; plast-=2; }
@@ -1398,11 +1405,15 @@ static void aprs_mic_e (decode_aprs_t *A, packet_t pp, unsigned char *info, int
 	  else if (*pfirst == '`'  && *(plast-1) == '_' && *plast == ')')  { strlcpy (A->g_mfr, "Yaesu FTM-100D", sizeof(A->g_mfr)); pfirst++; plast-=2; }
 	  else if (*pfirst == '`'  && *(plast-1) == '_' && *plast == '(')  { strlcpy (A->g_mfr, "Yaesu FT2D", sizeof(A->g_mfr)); pfirst++; plast-=2; }
 	  else if (*pfirst == '`'  && *(plast-1) == '_' && *plast == '0')  { strlcpy (A->g_mfr, "Yaesu FT3D", sizeof(A->g_mfr)); pfirst++; plast-=2; }
+	  else if (*pfirst == '`'  && *(plast-1) == '_' && *plast == '3')  { strlcpy (A->g_mfr, "Yaesu FT5D", sizeof(A->g_mfr)); pfirst++; plast-=2; }
+	  else if (*pfirst == '`'  && *(plast-1) == '_' && *plast == '1')  { strlcpy (A->g_mfr, "Yaesu FTM-300D", sizeof(A->g_mfr)); pfirst++; plast-=2; }
 
 	  else if (*pfirst == '`'  && *(plast-1) == ' ' && *plast == 'X')  { strlcpy (A->g_mfr, "AP510", sizeof(A->g_mfr)); pfirst++; plast-=2; }
-	  else if (*pfirst == '`'  && *(plast-1) == '(' && *plast == '5')  { strlcpy (A->g_mfr, "Anytone D578UV", sizeof(A->g_mfr)); pfirst++; plast-=2; }
 
-	  else if (*pfirst == '`'                                       )  { strlcpy (A->g_mfr, "Mic-Emsg", sizeof(A->g_mfr)); pfirst++; }
+	  else if (*pfirst == '`'  && *(plast-1) == '(' && *plast == '5')  { strlcpy (A->g_mfr, "Anytone D578UV", sizeof(A->g_mfr)); pfirst++; plast-=2; }
+	  else if (*pfirst == '`'                                       )  { strlcpy (A->g_mfr, "Generic Mic-Emsg", sizeof(A->g_mfr)); pfirst++; }
+
+// ' should be used for trackers (not message capable).
 
 	  else if (*pfirst == '\'' && *(plast-1) == '(' && *plast == '8')  { strlcpy (A->g_mfr, "Anytone D878UV", sizeof(A->g_mfr)); pfirst++; plast-=2; }
 
@@ -1412,13 +1423,13 @@ static void aprs_mic_e (decode_aprs_t *A, packet_t pp, unsigned char *info, int
 	  else if (*pfirst == '\'' && *(plast-1) == ':' && *plast == '4')  { strlcpy (A->g_mfr, "SCS GmbH & Co. P4dragon DR-7400 modems", sizeof(A->g_mfr)); pfirst++; plast-=2; }
 	  else if (*pfirst == '\'' && *(plast-1) == ':' && *plast == '8')  { strlcpy (A->g_mfr, "SCS GmbH & Co. P4dragon DR-7800 modems", sizeof(A->g_mfr)); pfirst++; plast-=2; }
 
-	  else if (*pfirst == '\''                                      )  { strlcpy (A->g_mfr, "McTrackr", sizeof(A->g_mfr)); pfirst++; }
+	  else if (*pfirst == '\''                                      )  { strlcpy (A->g_mfr, "Generic McTrackr", sizeof(A->g_mfr)); pfirst++; }
 
 	  else if (                   *(plast-1) == '\\'                )  { strlcpy (A->g_mfr, "Hamhud ?", sizeof(A->g_mfr)); pfirst++; plast-=2; }
 	  else if (                   *(plast-1) == '/'                 )  { strlcpy (A->g_mfr, "Argent ?", sizeof(A->g_mfr)); pfirst++; plast-=2; }
 	  else if (                   *(plast-1) == '^'                 )  { strlcpy (A->g_mfr, "HinzTec anyfrog", sizeof(A->g_mfr)); pfirst++; plast-=2; }
 	  else if (                   *(plast-1) == '*'                 )  { strlcpy (A->g_mfr, "APOZxx www.KissOZ.dk Tracker. OZ1EKD and OZ7HVO", sizeof(A->g_mfr)); pfirst++; plast-=2; }
-	  else if (                   *(plast-1) == '~'                 )  { strlcpy (A->g_mfr, "OTHER", sizeof(A->g_mfr)); pfirst++; plast-=2; }
+	  else if (                   *(plast-1) == '~'                 )  { strlcpy (A->g_mfr, "Unknown OTHER", sizeof(A->g_mfr)); pfirst++; plast-=2; }
 	}
 
 /*
@@ -3486,6 +3497,8 @@ time_t get_timestamp (decode_aprs_t *A, char *p)
 	time_t ts;
 
 	ts = time(NULL);
+	// FIXME: use gmtime_r instead.
+	// Besides not being thread safe, gmtime could possibly return null.
 	ptm = gmtime(&ts);
 
 	pdhm = (void *)p;
@@ -4211,9 +4224,7 @@ static void process_comment (decode_aprs_t *A, char *pstart, int clen)
 	    dw_printf("%s:%d: %s\n", __FILE__, __LINE__, emsg);
 	  }
 
-// TODO:  Would like to restrict to even length something like this:  ([!-{][!-{]){2,7}
+	  e = regcomp (&base91_tel_re, "\\|(([!-{][!-{]){2,7})\\|", REG_EXTENDED);
-
-	  e = regcomp (&base91_tel_re, "\\|([!-{]{4,14})\\|", REG_EXTENDED);
 	  if (e) {
 	    regerror (e, &base91_tel_re, emsg, sizeof(emsg));
 	    dw_printf("%s:%d: %s\n", __FILE__, __LINE__, emsg);
@@ -4411,14 +4422,14 @@ static void process_comment (decode_aprs_t *A, char *pstart, int clen)
 
 /*
  * Telemetry data, in base 91 compressed format appears as 2 to 7 pairs
- * of base 91 digits, surrounded by | at start and end.
+ * of base 91 digits, ! thru {, surrounded by | at start and end.
  */
 
 
 	if (regexec (&base91_tel_re, A->g_comment, MAXMATCH, match, 0) == 0) 
 	{
 
-	  char tdata[30];	/* Should be 4 to 14 characters. */
+	  char tdata[30];	/* Should be even number of 4 to 14 characters. */
 
 	  //dw_printf("compressed telemetry start=%d, end=%d\n", (int)(match[0].rm_so), (int)(match[0].rm_eo));
 
@@ -4442,6 +4453,8 @@ static void process_comment (decode_aprs_t *A, char *pstart, int clen)
  *
  * It surprised me to see this in a MIC-E message.
  * MIC-E has resolution of .01 minute so it would make sense to have it as an option.
+ * We also find an example in  http://www.aprs.org/aprs12/mic-e-examples.txt
+ *	'abc123R/'123}FFF.FFFMHztext.../A=123456...!DAO! Mv
  */
 
 	if (regexec (&dao_re, A->g_comment, MAXMATCH, match, 0) == 0) 
@@ -4451,7 +4464,7 @@ static void process_comment (decode_aprs_t *A, char *pstart, int clen)
 	  int a = A->g_comment[match[0].rm_so+2];
 	  int o = A->g_comment[match[0].rm_so+3];
 
-          //dw_printf("start=%d, end=%d\n", (int)(match[0].rm_so), (int)(match[0].rm_eo));
+	  dw_printf("DAO start=%d, end=%d\n", (int)(match[0].rm_so), (int)(match[0].rm_eo));
 
 
 /*
@@ -4503,7 +4516,7 @@ static void process_comment (decode_aprs_t *A, char *pstart, int clen)
  */
 
 /*
- * Here is an interesting case.
+ * Here are a couple situations where it is seen.
  *
  *	W8SAT-1>T2UV0P:`qC<0x1f>l!Xu\'"69}WMNI EDS Response Unit #1|+/%0'n|!w:X!|3
  *
@@ -4520,13 +4533,26 @@ static void process_comment (decode_aprs_t *A, char *pstart, int clen)
  * Comment earlier points out that MIC-E format has resolution of 0.01 minute,
  * same as non-compressed format, so the DAO does work out, after thinking
  * about it for a while.
+ * We also find a MIC-E example with !DAO! here:  http://www.aprs.org/aprs12/mic-e-examples.txt
+ *
+ * Another one:
+ *
+ *	KS4FUN-12>3X0PRU,W6CX-3,BKELEY,WIDE2*:`2^=l!<0x1c>+/'"48}MT-RTG|%B%p'a|!wqR!|3
+ *
+ *							MIC-E, Red Cross, Special
+ *							N 38 00.2588, W 122 06.3354
+ *							0 MPH, course 100, alt 108 ft
+ *	MT-RTG						comment
+ *	|%B%p'a|					Seq=397, A1=443, A2=610
+ *	!wqR!						DAO
+ *	|3						Byonics TinyTrack3
+ *						
  */
 
 /* 
  * The spec appears to be wrong.  It says '}' is the maximum value when it should be '{'. 
  */
 
-
  	    if (isdigit91(a)) {
 	      A->g_lat += (a - B91_MIN) * 1.1 / 600000.0 * sign(A->g_lat);
 	    }

src/dwgpsd.c

@@ -1,7 +1,7 @@
 //
 //    This file is part of Dire Wolf, an amateur radio packet TNC.
 //
-//    Copyright (C) 2013, 2014, 2015, 2020  John Langner, WB2OSZ
+//    Copyright (C) 2013, 2014, 2015, 2020, 2022  John Langner, WB2OSZ
 //
 //    This program is free software: you can redistribute it and/or modify
 //    it under the terms of the GNU General Public License as published by
@@ -60,7 +60,11 @@
 // An incompatibility was introduced with version 7
 // and again with 9 and again with 10.
 
-#if GPSD_API_MAJOR_VERSION < 5 || GPSD_API_MAJOR_VERSION > 11
+// release	lib version	API	Raspberry Pi OS
+// 3.22		28		11	bullseye
+// 3.23		29		12
+
+#if GPSD_API_MAJOR_VERSION < 5 || GPSD_API_MAJOR_VERSION > 12
 #error libgps API version might be incompatible.
 #endif
 
@@ -364,6 +368,10 @@ static void * read_gpsd_thread (void *arg)
 	    default:
 	    case MODE_NOT_SEEN:
 	    case MODE_NO_FIX:
+	      if (info.fix <= DWFIX_NOT_SEEN) {
+		text_color_set(DW_COLOR_INFO);
+	        dw_printf ("GPSD: No location fix.\n");
+	      }
 	      if (info.fix >= DWFIX_2D) {
 		text_color_set(DW_COLOR_INFO);
 	        dw_printf ("GPSD: Lost location fix.\n");

src/dwgpsnmea.c

@@ -144,8 +144,6 @@ int dwgpsnmea_init (struct misc_config_s *pconfig, int debug)
 
 /*
  * Open serial port connection.
- * 4800 baud is standard for GPS.
- * Should add an option to allow changing someday.
  */
 
 	s_gpsnmea_port_fd = serial_port_open (pconfig->gpsnmea_port, pconfig->gpsnmea_speed);
@@ -264,9 +262,12 @@ static void * read_gpsnmea_thread (void *arg)
 	    }
 	    dwgps_set_data (&info);
 
-	    // TODO: doesn't exist yet - serial_port_close(fd);
+	    serial_port_close(s_gpsnmea_port_fd);
 	    s_gpsnmea_port_fd = MYFDERROR;
 
+	    // TODO: If the open() was in this thread, we could wait a while and
+	    // try to open again.  That would allow recovery if the USB GPS device
+	    // is unplugged and plugged in again.
 	    break;	/* terminate thread. */
 	  }
 
@@ -287,75 +288,54 @@ static void * read_gpsnmea_thread (void *arg)
 	      }
 
 /* Process sentence. */
-// FIXME: Ignore the second letter rather than recognizing only GP... and GN...
+// TODO: More general: Ignore the second letter rather than recognizing only GP... and GN...
 
 	      if (strncmp(gps_msg, "$GPRMC", 6) == 0 ||
 		  strncmp(gps_msg, "$GNRMC", 6) == 0) {
 
-		f = dwgpsnmea_gprmc (gps_msg, 0, &info.dlat, &info.dlon, &info.speed_knots, &info.track);
+	        // Here we just tuck away the course and speed.
+	        // Fix and location will be updated by GxGGA.
+
+	        double ignore_dlat;
+	        double ignore_dlon;
+
+		f = dwgpsnmea_gprmc (gps_msg, 0, &ignore_dlat, &ignore_dlon, &info.speed_knots, &info.track);
 
 	        if (f == DWFIX_ERROR) {
-
 		    /* Parse error.  Shouldn't happen.  Better luck next time. */
-	            text_color_set(DW_COLOR_INFO);
+	            text_color_set(DW_COLOR_ERROR);
 	            dw_printf ("GPSNMEA: Error parsing $GPRMC sentence.\n");
 	            dw_printf ("%s\n", gps_msg);
 	        }
-	        else if (f == DWFIX_2D) {
-
-	          if (info.fix != DWFIX_2D && info.fix != DWFIX_3D) {
-
-		    text_color_set(DW_COLOR_INFO);
-	            dw_printf ("GPSNMEA: Location fix is now available.\n");
-
-		    info.fix = DWFIX_2D;   // Don't know if 2D or 3D.  Take minimum.
-	          }
-	  	  info.timestamp = time(NULL);
-	          if (s_debug >= 2) {
-	            text_color_set(DW_COLOR_DEBUG);
-	            dwgps_print ("GPSNMEA: ", &info);
-	          }
-	          dwgps_set_data (&info);
-	        }
-	        else {
-
-	          if (info.fix == DWFIX_2D || info.fix == DWFIX_3D) {
-
-		    text_color_set(DW_COLOR_INFO);
-	            dw_printf ("GPSNMEA: Lost location fix.\n");
-	          }
-	          info.fix = f;		/* lost it. */
-	  	  info.timestamp = time(NULL);
-	          if (s_debug >= 2) {
-	            text_color_set(DW_COLOR_DEBUG);
-	            dwgps_print ("GPSNMEA: ", &info);
-	          }
-	          dwgps_set_data (&info);
 	      }
 
-	      }
 	      else if (strncmp(gps_msg, "$GPGGA", 6) == 0 ||
 		       strncmp(gps_msg, "$GNGGA", 6) == 0) {
 		int nsat;
 
 		f = dwgpsnmea_gpgga (gps_msg, 0, &info.dlat, &info.dlon, &info.altitude, &nsat);
 
-	        /* Only switch between 2D & 3D.  */
-	        /* Let GPRMC handle other changes in fix state and data transfer. */
-
 	        if (f == DWFIX_ERROR) {
-
 		    /* Parse error.  Shouldn't happen.  Better luck next time. */
-	            text_color_set(DW_COLOR_INFO);
+	            text_color_set(DW_COLOR_ERROR);
 	            dw_printf ("GPSNMEA: Error parsing $GPGGA sentence.\n");
 	            dw_printf ("%s\n", gps_msg);
 	        }
-	        else if ((f == DWFIX_3D && info.fix == DWFIX_2D) ||
+	        else  {
-	                 (f == DWFIX_2D && info.fix == DWFIX_3D)) {
+	            if (f != info.fix) {		// Print change in location fix.
 		       text_color_set(DW_COLOR_INFO);
-	          dw_printf ("GPSNMEA: Location fix is now %dD.\n", (int)f);
+	               if (f == DWFIX_NO_FIX) dw_printf ("GPSNMEA: Location fix has been lost.\n");
+	               if (f == DWFIX_2D)     dw_printf ("GPSNMEA: Location fix is now 2D.\n");
+	               if (f == DWFIX_3D)     dw_printf ("GPSNMEA: Location fix is now 3D.\n");
 	               info.fix = f;
 	          }
+	          info.timestamp = time(NULL);
+	          if (s_debug >= 2) {
+	            text_color_set(DW_COLOR_DEBUG);
+	            dwgps_print ("GPSNMEA: ", &info);
+	          }
+	          dwgps_set_data (&info);
+	        }	
 	      }
 	    }
 
@@ -448,6 +428,8 @@ static int remove_checksum (char *sent, int quiet)
  *
  *					Left undefined if not valid.
  *
+ * Note:	RMC does not contain altitude.
+ *
  * Returns:	DWFIX_ERROR	Parse error.
  *		DWFIX_NO_FIX	GPS is there but Position unknown.  Could be temporary.
  *		DWFIX_2D	Valid position.   We don't know if it is really 2D or 3D.
@@ -597,10 +579,13 @@ dwfix_t dwgpsnmea_gprmc (char *sentence, int quiet, double *odlat, double *odlon
  *		
  *					Left undefined if not valid.
  *
+ * Note:	GGA has altitude but not course and speed so we need to use both.
+ *
  * Returns:	DWFIX_ERROR	Parse error.
  *		DWFIX_NO_FIX	GPS is there but Position unknown.  Could be temporary.
  *		DWFIX_2D	Valid position.   We don't know if it is really 2D or 3D.
  *				Take more cautious value so we don't try using altitude.
+ *		DWFIX_3D	Valid 3D position.
  *
  * Examples:	$GPGGA,001429.00,,,,,0,00,99.99,,,,,,*68
  *		$GPGGA,212407.000,4237.1505,N,07120.8602,W,0,00,,,M,,M,,*58
@@ -609,9 +594,6 @@ dwfix_t dwgpsnmea_gprmc (char *sentence, int quiet, double *odlat, double *odlon
  *
  *--------------------------------------------------------------------*/
 
-
-// TODO: in progress...
-
 dwfix_t dwgpsnmea_gpgga (char *sentence, int quiet, double *odlat, double *odlon, float *oalt, int *onsat)
 {
 	char stemp[NMEA_MAX_LEN];	/* Make copy because parsing is destructive. */
@@ -708,8 +690,7 @@ dwfix_t dwgpsnmea_gpgga (char *sentence, int quiet, double *odlat, double *odlon
 	  return (DWFIX_ERROR);
 	}
 
-
+	// TODO: num sat...  Why would we care?
-	// TODO: num sat...
 
 /* 
  * We can distinguish between 2D & 3D fix by presence