From c7e967756cf2f06a692aaa1417fb8106ec41d508 Mon Sep 17 00:00:00 2001
From: Dominik Berse <dominik.berse@tapdo.io>
Date: Fri, 22 Jul 2022 16:27:52 +0200
Subject: [PATCH] fix(SoftwareSerial):  correct TX to RX switch when using
 half-duplex

---
 libraries/SoftwareSerial/src/SoftwareSerial.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libraries/SoftwareSerial/src/SoftwareSerial.cpp b/libraries/SoftwareSerial/src/SoftwareSerial.cpp
index d9ad70e323..9eec770a6a 100644
--- a/libraries/SoftwareSerial/src/SoftwareSerial.cpp
+++ b/libraries/SoftwareSerial/src/SoftwareSerial.cpp
@@ -157,6 +157,8 @@ bool SoftwareSerial::listen()
     active_listener = this;
     if (!_half_duplex) {
       active_in = this;
+    } else if (!active_out) {
+      setRXTX(true);
     }
     return true;
   }