Arduino Due compatibility (MHeironimus#71)

* Arduino Due support

* DynamicHID: send report with only one Send() call

On a Due, Reports don't seem to be took into account with the
previous implementation. This new implementation works on the Due, as
well as previous supported boards too, and has the benefit of sending
everything in one Send() call instead of two.

* Update README

* Arduino IDE: add ARM SAM (Due CPU) architecture

* DynamicHID::SendReport: fix buffer size

* General: version bump

* Add credit in README

Author: Palakis

Joystick/library.properties

@@ -1,9 +1,9 @@
 name=Joystick
-version=2.0.4
+version=2.0.5
 author=Matthew Heironimus
 maintainer=Matthew Heironimus <[email protected]>
-sentence=Arduino library that allows an Arduino Leonardo or Arduino Micro to appear as a Joystick or Gamepad. 
+sentence=Arduino library that allows an Arduino Leonardo or Arduino Micro to appear as a Joystick or Gamepad.
 paragraph=This library is built on the PluggableUSB library. It can be used with or without other HID-based libraries (Mouse, Keyboard, etc.).
 category=Device Control
 url=https://github.com/MHeironimus/ArduinoJoystickLibrary
-architectures=avr
+architectures=avr,sam

Joystick/src/DynamicHID/DynamicHID.cpp

@@ -23,6 +23,11 @@
 
 #if defined(USBCON)
 
+#ifdef _VARIANT_ARDUINO_DUE_X_
+#define USB_SendControl USBD_SendControl
+#define USB_Send USBD_Send
+#endif
+
 DynamicHID_& DynamicHID()
 {
 	static DynamicHID_ obj;
@@ -91,11 +96,10 @@ void DynamicHID_::AppendDescriptor(DynamicHIDSubDescriptor *node)
 
 int DynamicHID_::SendReport(uint8_t id, const void* data, int len)
 {
-	auto ret = USB_Send(pluggedEndpoint, &id, 1);
-	if (ret < 0) return ret;
-	auto ret2 = USB_Send(pluggedEndpoint | TRANSFER_RELEASE, data, len);
-	if (ret2 < 0) return ret2;
-	return ret + ret2;
+	uint8_t p[len + 1];
+	p[0] = id;
+	memcpy(&p[1], data, len);
+	return USB_Send(pluggedEndpoint | TRANSFER_RELEASE, p, len + 1);
 }
 
 bool DynamicHID_::setup(USBSetup& setup)

Joystick/src/DynamicHID/DynamicHID.h

@@ -24,7 +24,18 @@
 
 #include <stdint.h>
 #include <Arduino.h>
-#include "PluggableUSB.h"
+
+#ifdef _VARIANT_ARDUINO_DUE_X_
+  // The following values are the same as AVR's USBAPI.h
+  // Reproduced here because SAM doesn't have these in
+  // its own USBAPI.H
+  #define USB_EP_SIZE 64
+  #define TRANSFER_PGM 0x80
+
+  #include "USB/PluggableUSB.h"
+#else
+  #include "PluggableUSB.h"
+#endif
 
 #if defined(USBCON)
 
@@ -108,7 +119,11 @@ class DynamicHID_ : public PluggableUSBModule
   uint8_t getShortName(char* name);
 
 private:
+  #ifdef _VARIANT_ARDUINO_DUE_X_
+  uint32_t epType[1];
+  #else
   uint8_t epType[1];
+  #endif
 
   DynamicHIDSubDescriptor* rootNode;
   uint16_t descriptorSize;

README.md

@@ -1,5 +1,5 @@
 # Arduino Joystick Library
-#### Version 2.0.4
+#### Version 2.0.5
 This library can be used with Arduino IDE 1.6.6 (or above) to add one or more joysticks (or gamepads) to the list of HID devices an [Arduino Leonardo](https://www.arduino.cc/en/Main/ArduinoBoardLeonardo) or [Arduino Micro](https://www.arduino.cc/en/Main/ArduinoBoardMicro) (or any Arduino clone that is based on the ATmega32u4) can support. This will not work with Arduino IDE 1.6.5 (or below) or with non-32u4 based Arduino devices (e.g. Arduino UNO, Arduino MEGA, etc.).
 
 ## Features
@@ -213,6 +213,7 @@ Others have tested this library with the following boards:
 
 - [SparkFun Pro Micro](https://www.sparkfun.com/products/12640)
 - [RobotDyn Micro ATmega32U4-MU](http://robotdyn.com/catalog/boards/micro_atmega32u4_mu/) by [@Sylverzerom](https://github.com/Sylverzerom)
+- [Arduino Due](https://www.arduino.cc/en/Main/ArduinoBoardDue) by [@Palakis](https://github.com/Palakis)
 
 Boards that should work, but I have not personally tested:
 
@@ -221,8 +222,6 @@ Boards that should work, but I have not personally tested:
 - [Arduino Yún](https://store.arduino.cc/usa/arduino-yun)
 
 Other board notes:
-- [Arduino Due](https://www.arduino.cc/en/Main/ArduinoBoardDue) - NOT Supported - I have been told that the old Arduino IDE 1.6.5 (and below) version of this library (see [Add USB Game Controller to Arduino Leonardo or Micro](http://mheironimus.blogspot.com/2015/03/add-usb-game-controller-to-arduino.html))
-works with the Arduino Due. I have also been told Version 1.x of the the Arduino Joystick Library will work with the Arduino Duo. However, Version 2.x of the Arduino Joystick Library does not work with Arduino Due at this time.
 - [Arduino UNO](https://www.arduino.cc/en/Main/ArduinoBoardUno) - NOT Supported - However, it might work with the [NicoHood/HoodLoader2](https://github.com/NicoHood/HoodLoader2) library, but I have not had a chance to try this out yet.
 - [Arduino MEGA](https://www.arduino.cc/en/Main/ArduinoBoardMega2560) - NOT Supported - However, it might work with the [NicoHood/HoodLoader2](https://github.com/NicoHood/HoodLoader2) library, but I have not had a chance to try this out yet.