From 4e4fa7c507125569c15a63eb6a470c060af906dd Mon Sep 17 00:00:00 2001
From: Kuba <132459354+KubaPro010@users.noreply.github.com>
Date: Tue, 7 Nov 2023 13:20:57 +0000
Subject: [PATCH] if rt empty then dont send group

---
 src/pifmrds/rds.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/pifmrds/rds.c b/src/pifmrds/rds.c
index 85258d8..29de566 100644
--- a/src/pifmrds/rds.c
+++ b/src/pifmrds/rds.c
@@ -154,11 +154,13 @@ void get_rds_group(int *buffer, int stereo, int ct_clock_enabled) {
             ps_state++;
             if(ps_state >= 4) ps_state = 0;
         } else { // Type 2A groups
-            blocks[1] = 0x2000 | rds_params.tp << 10 | rds_params.pty << 5 | rds_params.ab << 4 | rt_state;
-            blocks[2] = rds_params.rt[rt_state*4+0] << 8 | rds_params.rt[rt_state*4+1];
-            blocks[3] = rds_params.rt[rt_state*4+2] << 8 | rds_params.rt[rt_state*4+3];
-            rt_state++;
-            if(rt_state >= 16) rt_state = 0;
+            if(!strlen(rds_params.rt) == 0) {
+                blocks[1] = 0x2000 | rds_params.tp << 10 | rds_params.pty << 5 | rds_params.ab << 4 | rt_state;
+                blocks[2] = rds_params.rt[rt_state*4+0] << 8 | rds_params.rt[rt_state*4+1];
+                blocks[3] = rds_params.rt[rt_state*4+2] << 8 | rds_params.rt[rt_state*4+3];
+                rt_state++;
+                if(rt_state >= 16) rt_state = 0;
+            }
         }
     
         state++;