samples: improve handling for the case where all subevents are aborted

In case every subevent in the CS procedure was aborted, it would happen
that the sample would try to parse the local steps anyway. An error
message was printed in this case as there were no local steps to parse.

Signed-off-by: Olivier Lesage <[email protected]>

Author: olivier-le-sage

samples/bluetooth/channel_sounding_ras_initiator/src/main.c

@@ -165,6 +165,18 @@ static void ranging_data_cb(struct bt_conn *conn, uint16_t ranging_counter, int
 
 	LOG_DBG("Ranging data received for ranging counter %d", ranging_counter);
 
+	if (latest_local_steps.len == 0) {
+		LOG_WRN("All subevents in ranging counter %u were aborted",
+			most_recent_local_ranging_counter);
+		net_buf_simple_reset(&latest_local_steps);
+		k_sem_give(&sem_local_steps);
+
+		if (!(ras_feature_bits & RAS_FEAT_REALTIME_RD)) {
+			net_buf_simple_reset(&latest_peer_steps);
+		}
+		return;
+	}
+
 	/* This struct is static to avoid putting it on the stack (it's very large) */
 	static cs_de_report_t cs_de_report;