From c57d7d90454203eebe80cc04a49554171fcd578a Mon Sep 17 00:00:00 2001
From: jgromes <jgromes@users.noreply.github.com>
Date: Sun, 27 Oct 2019 17:18:37 +0100
Subject: [PATCH] Added support for Arduino Due

---
 .travis.yml     | 3 +++
 README.md       | 3 ++-
 src/ISerial.cpp | 8 ++++----
 src/TypeDef.h   | 2 +-
 4 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 69cb0753..1cc541cd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,7 @@ env:
     - BOARD="STM32:stm32:GenF1:pnum=BLUEPILL_F103C6"
     - BOARD="esp8266:esp8266:generic:xtal=80,ResetMethod=ck,CrystalFreq=26,FlashFreq=40,FlashMode=qio,eesz=512K"
     - BOARD="arduino:samd:arduino_zero_native"
+    - BOARD="arduino:sam:arduino_due_x"
     - BOARD="arduino:avr:uno"
     - BOARD="arduino:avr:leonardo"
     - BOARD="arduino:avr:mega:cpu=atmega2560"
@@ -38,6 +39,8 @@ before_install:
       arduino --install-boards STM32:stm32;
     elif [[ "$BOARD" =~ "arduino:samd:" ]]; then
       arduino --install-boards arduino:samd;
+    elif [[ "$BOARD" =~ "arduino:sam:" ]]; then
+      arduino --install-boards arduino:sam;
     fi
 
 # create directory to save the library and create symbolic link
diff --git a/README.md b/README.md
index 5ac65bb0..935a15ac 100644
--- a/README.md
+++ b/README.md
@@ -34,8 +34,9 @@ RadioLib was originally created as a driver for [__RadioShield__](https://github
 * __Arduino AVR boards__ - tested on Uno, Mega and Leonardo
 * __ESP8266 boards__ - NodeMCU, Wemos D1, etc.
 * __ESP32 boards__ - tested on ESP-WROOM-32
-* __STM32 boards__ - tested on BluePill F103C8, STM32VL-Discovery F100RB (with [custom definitions](https://github.com/stm32duino/wiki/wiki/Custom-definitions) in variant.h)
+* __STM32 boards__ - tested on Nucleo L452RE-P
 * __SAMD boards__ - Arduino Zero
+* __SAM boards__ - Arduino Due
 
 ### In development:
 * __SIM800C__ GSM module
diff --git a/src/ISerial.cpp b/src/ISerial.cpp
index 7ff0be0a..bc280e68 100644
--- a/src/ISerial.cpp
+++ b/src/ISerial.cpp
@@ -9,7 +9,7 @@ void ISerial::begin(long speed) {
 }
 
 bool ISerial::listen() {
-#if defined ( ESP32 )  || defined (SAMD_SERIES) || defined (ARDUINO_ARCH_STM32)
+#ifdef SOFTWARE_SERIAL_UNSUPPORTED
   return true;
 #else
   return(_mod->ModuleSerial->listen());
@@ -21,7 +21,7 @@ void ISerial::end() {
 }
 
 bool ISerial::isListening() {
-#if defined( ESP32 ) || defined ( SAMD_SERIES ) || defined (ARDUINO_ARCH_STM32)
+#ifdef SOFTWARE_SERIAL_UNSUPPORTED
   return true;
 #else
   return(_mod->ModuleSerial->isListening());
@@ -29,7 +29,7 @@ bool ISerial::isListening() {
 }
 
 bool ISerial::stopListening() {
-#if defined( ESP32 ) || defined ( SAMD_SERIES ) || defined (ARDUINO_ARCH_STM32)
+#ifdef SOFTWARE_SERIAL_UNSUPPORTED
   return true;
 #else
   return(_mod->ModuleSerial->stopListening());
@@ -37,7 +37,7 @@ bool ISerial::stopListening() {
 }
 
 bool ISerial::overflow() {
-#if defined( ESP32 ) || defined ( SAMD_SERIES ) || defined (ARDUINO_ARCH_STM32)
+#ifdef SOFTWARE_SERIAL_UNSUPPORTED
   return false;
 #else
   return(_mod->ModuleSerial->overflow());
diff --git a/src/TypeDef.h b/src/TypeDef.h
index 41f4ba5c..f1675bcd 100644
--- a/src/TypeDef.h
+++ b/src/TypeDef.h
@@ -8,7 +8,7 @@
 #endif
 
 // the following platforms do not support SoftwareSerial library
-#if defined(ESP32) || defined(SAMD_SERIES) || defined(ARDUINO_ARCH_STM32)
+#if defined(ESP32) || defined(SAMD_SERIES) || defined(ARDUINO_ARCH_STM32) || defined(__SAM3X8E__)
   #define SOFTWARE_SERIAL_UNSUPPORTED
 #endif