From 32e27353503dc41b4870761ada90bd7b752ade6d Mon Sep 17 00:00:00 2001
From: mrceki <105711013+mrceki@users.noreply.github.com>
Date: Tue, 12 Sep 2023 13:57:40 +0300
Subject: [PATCH] Adding support for microcontrollers that do not have a
 dedicated USB-to-UART chip, such as the ESP32-S2, ESP32-S3, and ESP32-C3.

---
 rosserial_arduino/src/ros_lib/ArduinoHardware.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/rosserial_arduino/src/ros_lib/ArduinoHardware.h b/rosserial_arduino/src/ros_lib/ArduinoHardware.h
index 08fbbd5e6..2450a83d3 100644
--- a/rosserial_arduino/src/ros_lib/ArduinoHardware.h
+++ b/rosserial_arduino/src/ros_lib/ArduinoHardware.h
@@ -59,7 +59,15 @@
   #define SERIAL_CLASS USBSerial
 #else 
   #include <HardwareSerial.h>  // Arduino AVR
-  #define SERIAL_CLASS HardwareSerial
+  #if defined(USE_USBCDC)
+    // ESP32-S2 ESP32-C3
+    #define SERIAL_CLASS USBCDC
+  #elif defined(USE_HWCDC)
+    // ESP32-S3
+    #define SERIAL_CLASS HWCDC
+  #else
+    #define SERIAL_CLASS HardwareSerial
+  #endif
 #endif
 
 class ArduinoHardware {