Store GPS hemisphere separately -- old method couldn't handle positions between 0 and -1 degrees.

gps.c

@@ -178,7 +178,7 @@ char gps_parse(gpsfix_t *gps)
 			break;
 		
 		case 3: /* Latitude hemisphere */
-			if(*r == 'S') gps->latitude_i = -gps->latitude_i;
+			gps->latitude_h = (*r == 'S' ? 'S' : 'N');
 			break;
 		
 		case 4: /* Longitude */
@@ -187,7 +187,7 @@ char gps_parse(gpsfix_t *gps)
 			break;
 		
 		case 5: /* Longitude hemisphere */
-			if(*r == 'W') gps->longitude_i = -gps->longitude_i;
+			gps->longitude_h = (*r == 'W' ? 'W' : 'E');
 			break;
 		
 		case 6: /* Fix quality */

gps.h

@@ -15,9 +15,11 @@ typedef struct {
 	
 	int16_t  latitude_i; /* -180-180 */
 	uint32_t latitude_f; /* 0-999999 */
+	char     latitude_h; /* Hemisphere */
 	
 	int16_t  longitude_i; /* -180-180 */
 	uint32_t longitude_f; /* 0-999999 */
+	char     longitude_h; /* Hemisphere */
 	
 	int32_t altitude; /* 0-99999 */
 	

hadie.c

@@ -195,10 +195,12 @@ char tx_telemetry(void)
 	
 	rtx_wait();
 	snprintf(msg, MSG_SIZE,
-		PREFIX CALLSIGN ",%u,%02i:%02i:%02i,%i.%06lu,%i.%06lu,%li,%i:%i",
+		PREFIX CALLSIGN ",%u,%02i:%02i:%02i,%s%i.%06lu,%s%i.%06lu,%li,%i:%i",
 		counter++,
 		gps.hour, gps.minute, gps.second,
+		(gps.latitude_h == 'S' ? "-" : ""),
 		gps.latitude_i, gps.latitude_f,
+		(gps.longitude_h == 'W' ? "-" : ""),
 		gps.longitude_i, gps.longitude_f,
 		gps.altitude, gps.fix, gps.sats);