Added SSS disable option to sync

lte/include/lte/sync/sync.h

@@ -61,6 +61,7 @@ typedef struct {
 	float cfo;
 	lte_cp_t cp;
 	bool detect_cp;
+	bool sss_en;
 }sync_t;
 
 
@@ -81,6 +82,9 @@ void sync_pss_det_peak_to_avg(sync_t *q);
 void sync_force_N_id_2(sync_t *q, int force_N_id_2);
 /* Forces the synchronizer to skip CP detection (useful for tracking mode) */
 void sync_force_cp(sync_t *q, lte_cp_t cp);
+/* Enables/Disables SSS detection (useful for tracking mode) */
+void sync_sss_en(sync_t *q, bool enabled);
+
 
 /* Gets the slot id (0 or 10) */
 int sync_get_slot_id(sync_t *q);

lte/lib/sync/src/sync.c

@@ -94,6 +94,10 @@ void sync_force_cp(sync_t *q, lte_cp_t cp) {
 	q->detect_cp = false;
 }
 
+void sync_sss_en(sync_t *q, bool enabled) {
+	q->sss_en = enabled;
+}
+
 int sync_get_cell_id(sync_t *q) {
 	if (q->N_id_1 >=0 && q->N_id_2 >= 0) {
 		return q->N_id_1*3 + q->N_id_2;
@@ -179,6 +183,8 @@ int sync_run(sync_t *q, cf_t *input) {
 		INFO("PSS peak detected N_id_2=%d, pos=%d peak=%.2f par=%.2f th=%.2f cfo=%.4f\n", N_id_2,
 				peak_pos[N_id_2], peak_value[N_id_2], q->peak_to_avg, q->threshold, q->cfo);
 
+		if (q->sss_en) {
+
 			/* Make sure we have enough room to find SSS sequence */
 			sss_idx_n = peak_pos[N_id_2]-2*(128+CP(128,CPNORM_LEN));
 			sss_idx_e = peak_pos[N_id_2]-2*(128+CP(128,CPEXT_LEN));
@@ -233,8 +239,11 @@ int sync_run(sync_t *q, cf_t *input) {
 				q->N_id_1 = N_id_1_n;
 			}
 			q->N_id_2 = N_id_2;
+
 			INFO("SSS detected N_id_1=%d, slot_idx=%d, %s CP\n",
 					q->N_id_1, q->slot_id, CP_ISNORM(q->cp)?"Normal":"Extended");
+		}
+
 		return peak_pos[N_id_2];
 
 	} else {