From 7f1b7ade7b26ed745c1f1aefc61150f9f2299b5a Mon Sep 17 00:00:00 2001
From: me-no-dev <hristo@espressif.com>
Date: Wed, 13 May 2020 19:26:34 +0300
Subject: [PATCH] Update HardwareSerial.cpp

---
 cores/esp32/HardwareSerial.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/cores/esp32/HardwareSerial.cpp b/cores/esp32/HardwareSerial.cpp
index d284dc70..0a839faf 100644
--- a/cores/esp32/HardwareSerial.cpp
+++ b/cores/esp32/HardwareSerial.cpp
@@ -56,8 +56,13 @@ void HardwareSerial::begin(unsigned long baud, uint32_t config, int8_t rxPin, in
         end();
     }
     if(_uart_nr == 0 && rxPin < 0 && txPin < 0) {
+#if CONFIG_IDF_TARGET_ESP32
         rxPin = 3;
         txPin = 1;
+#elif CONFIG_IDF_TARGET_ESP32S2
+        rxPin = 44;
+        txPin = 43;
+#endif
     }
     if(_uart_nr == 1 && rxPin < 0 && txPin < 0) {
         rxPin = RX1;