From f178306df98426e06e6b3ef20b1967c37a591363 Mon Sep 17 00:00:00 2001
From: Rodrigo Garcia <rodrigo.garcia@espressif.com>
Date: Sat, 13 Apr 2024 13:23:25 -0300
Subject: [PATCH] fixes RX1/TX1 + RX2/TX2 pins in HardwareSerial.h

---
 cores/esp32/HardwareSerial.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cores/esp32/HardwareSerial.h b/cores/esp32/HardwareSerial.h
index 72f41c6a1ef..7df71c24381 100644
--- a/cores/esp32/HardwareSerial.h
+++ b/cores/esp32/HardwareSerial.h
@@ -135,7 +135,7 @@ typedef enum {
 #endif
 
 // Default pins for UART1 are arbitrary, and defined here for convenience.
-
+#if SOC_UART_NUM > 1
 #ifndef RX1
     #if CONFIG_IDF_TARGET_ESP32
       #define RX1 (gpio_num_t)9