Fill unassigned bytes with 0xFF in J1939 VP2

2026-05-08 17:18:03 +02:00 · 2026-05-08 17:18:03 +02:00 · 90383a0cca
parent 9743a2ffcf
commit 90383a0cca
1 changed files with 6 additions and 0 deletions
--- a/j1939_vehicle_position/j1939_vehicle_position_srv.c
+++ b/j1939_vehicle_position/j1939_vehicle_position_srv.c
@ -270,6 +270,12 @@ static int j1939_vp2_get_data(struct j1939_vp_srv_priv *priv,
 	j1939_vp2_set_pdop(vp2p, pdop);
 	j1939_vp2_set_tdop(vp2p, tdop);

+	/* This PG's last 3 bytes are not assigned and hence must be set
+	 * to 0xFF as per J1939-71, section 5.2 */
+	vp2p->unused5 = 0xFF;
+	vp2p->unused6 = 0xFF;
+	vp2p->unused7 = 0xFF;
+
 	return 0;
 }