From 1657606092cf0e3d3935a330dff6c3ede10c03ba Mon Sep 17 00:00:00 2001
From: Gunar Schorcht <gunar@schorcht.net>
Date: Thu, 5 Sep 2019 17:39:32 +0200
Subject: [PATCH] sys/arduino: add Arduino.h for compatibility

Arduino libraries often include Arduino.h. For source code compatibility this header file is required. Header guards in file arduino.hpp had to be renamed.
---
 sys/arduino/include/Arduino.h   | 33 +++++++++++++++++++++++++++++++++
 sys/arduino/include/arduino.hpp |  6 +++---
 2 files changed, 36 insertions(+), 3 deletions(-)
 create mode 100644 sys/arduino/include/Arduino.h

diff --git a/sys/arduino/include/Arduino.h b/sys/arduino/include/Arduino.h
new file mode 100644
index 0000000000..a151793d6f
--- /dev/null
+++ b/sys/arduino/include/Arduino.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2018 Gunar Schorcht
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     sys_arduino
+ * @brief       Wrapper to keep source code compatibility for Arduino.h
+ * @author      Gunar Schorcht <gunar@schorcht.net>
+ * @file
+ * @{
+ */
+
+#ifndef ARDUINO_H
+#define ARDUINO_H
+
+#ifdef __cplusplus
+#include "arduino.hpp"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ARDUINO_H */
+/** @} */
diff --git a/sys/arduino/include/arduino.hpp b/sys/arduino/include/arduino.hpp
index 536f7fbbf8..6953a694f1 100644
--- a/sys/arduino/include/arduino.hpp
+++ b/sys/arduino/include/arduino.hpp
@@ -18,8 +18,8 @@
  * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
  */
 
-#ifndef ARDUINO_H
-#define ARDUINO_H
+#ifndef ARDUINO_HPP
+#define ARDUINO_HPP
 
 extern "C" {
 #include "periph/gpio.h"
@@ -122,5 +122,5 @@ unsigned long millis();
 int analogRead(int pin);
 #endif
 
-#endif /* ARDUINO_H */
+#endif /* ARDUINO_HPP */
 /** @} */