From 681f9218d054cac7afeee9870c03eff7c099561e Mon Sep 17 00:00:00 2001
From: SirSydom <com@sirsydom.de>
Date: Tue, 22 Feb 2022 21:10:39 +0100
Subject: [PATCH] also masked U_L_DATA_END_REQ correctly

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

diff --git a/src/knx/tpuart_data_link_layer.cpp b/src/knx/tpuart_data_link_layer.cpp
index cbb6e35..6e0fd81 100644
--- a/src/knx/tpuart_data_link_layer.cpp
+++ b/src/knx/tpuart_data_link_layer.cpp
@@ -596,7 +596,7 @@ bool TpUartDataLinkLayer::sendSingleFrameByte()
         if (_TxByteCnt != _sendBufferLength - 1)
             cmd[0] = U_L_DATA_START_CONT_REQ | (_TxByteCnt % 64);
         else
-            cmd[0] = U_L_DATA_END_REQ | _TxByteCnt;
+            cmd[0] = U_L_DATA_END_REQ | (_TxByteCnt % 64);
 
         cmd[1] = _sendBuffer[_TxByteCnt];
 #ifdef DBG_TRACE