Add BS talker ID (used by AIS base stations)

check and packet-regress passed

1 files changed, 18 insertions, 0 deletions

diff --git a/packet.c b/packet.c
index fec34b97..3a1ffd11 100644
--- a/packet.c
+++ b/packet.c
@@ -412,6 +412,8 @@ static void nextstate(struct gps_packet_t *lexer, unsigned char c)
     case NMEA_BANG:
 	if (c == 'A')
 	    lexer->state = AIS_LEAD_1;
+	else if (c == 'B')
+	    lexer->state = AIS_LEAD_ALT1;
 	else
 	    lexer->state = GROUND_STATE;
 	break;
@@ -427,6 +429,18 @@ static void nextstate(struct gps_packet_t *lexer, unsigned char c)
 	else
 	    lexer->state = GROUND_STATE;
 	break;
+    case AIS_LEAD_ALT1:
+	if (c == 'S')
+	    lexer->state = AIS_LEAD_ALT2;
+	else
+	    lexer->state = GROUND_STATE;
+	break;
+    case AIS_LEAD_ALT2:
+	if (isalpha(c))
+	    lexer->state = NMEA_LEADER_END;
+	else
+	    lexer->state = GROUND_STATE;
+	break;
 #if defined(TNT_ENABLE) || defined(GARMINTXT_ENABLE) || defined(ONCORE_ENABLE)
     case AT1_LEADER:
 	switch (c) {
@@ -1467,6 +1481,10 @@ void packet_parse(struct gps_packet_t *lexer)
 		packet_accept(lexer, AIVDM_PACKET);
 	    else if (strncmp((char *)lexer->inbuffer, "!AIVDO", 6) == 0)
 		packet_accept(lexer, AIVDM_PACKET);
+	    else if (strncmp((char *)lexer->inbuffer, "!BSVDM", 6) == 0)
+		packet_accept(lexer, AIVDM_PACKET);
+	    else if (strncmp((char *)lexer->inbuffer, "!BSVDO", 6) == 0)
+		packet_accept(lexer, AIVDM_PACKET);
 	    else
 #endif /* AIVDM_ENABLE */
 		packet_accept(lexer, NMEA_PACKET);