From 58aacc189fd8dba272e37b5bc6fd0d175c3b087c Mon Sep 17 00:00:00 2001
From: MichaelDvP <github@mdvp.de>
Date: Tue, 16 Jul 2024 13:57:03 +0200
Subject: [PATCH] system/send: use busId if SRC is null

---
 src/telegram.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/telegram.cpp b/src/telegram.cpp
index 5bc116c36..fc2183c94 100644
--- a/src/telegram.cpp
+++ b/src/telegram.cpp
@@ -475,7 +475,7 @@ void TxService::add(uint8_t operation, const uint8_t * data, const uint8_t lengt
     }
 
     // build header. src, dest and offset have fixed positions
-    uint8_t src    = operation == Telegram::Operation::TX_RAW ? data[0] : ems_bus_id();
+    uint8_t src    = operation == Telegram::Operation::TX_RAW && data[0] ? data[0] : ems_bus_id();
     uint8_t dest   = data[1];
     uint8_t offset = data[3];