/*
Copyright (c) 2014 NicoHood
 See the readme for credit to other people.
 
 Advanced Gamepad example
 */

// not needed for Leonardo/Micro
#include <HID.h>

// for Leonardo/Micro: make sure to activate desired USB functions in HID_Reports.h

const int pinLed = 13;
const int pinButton = 8;

// see HID_Reports.h for all data structures
HID_GamepadReport_Data_t Gamepadreport;

void setup() {
  pinMode(pinLed, OUTPUT);
  pinMode(pinButton, INPUT_PULLUP);

  // Starts Serial at baud 115200. end just ends the Serial
  // Make sure to end your special HIDs before, this does not clear them!
  // You need this baud for the HID library but still can use other bauds
  // without HID functions.
  // not needed for Leonado/Micro, Serial will not be set
  HID.begin();

  // Sends a clean report to the host. This is important because
  // the 16u2 of the Uno/Mega is not turned off while programming
  // so you want to start with a clear report to avoid strange bugs.
  // its exactly the same like the end() function.
  // You can also unplug the device if anything goes wrong.
  // To prevent the 16u2 to send more reports just pull the Serial TX (pin1) low
  // or see readme for turning off HID functions.
  // If you did anything wrong (keyboard is doing weird stuff)
  // just logout (no shutdown needed).
  memset(&Gamepadreport, 0, sizeof(Gamepadreport));
  HID.sendReport(HID_REPORTID_Gamepad1Report, &Gamepadreport, sizeof(Gamepadreport));
}

void loop() {
  if (!digitalRead(pinButton)) {
    digitalWrite(pinLed, HIGH);

    // This demo is actually made for advanced users to show them how they can write an own report.
    // This might be useful for a Gamepad if you want to edit the values direct on your own. 

    // count with buttons binary
    static uint32_t count = 0;
    Gamepadreport.whole32[0] = count++;

    // move x/y Axis to a new position (16bit)
    Gamepadreport.whole16[2] = (random(0xFFFF));

    // functions before only set the values
    // this writes the report to the host
    HID.sendReport(HID_REPORTID_Gamepad1Report, &Gamepadreport, sizeof(Gamepadreport));

    // simple debounce
    delay(300);
    digitalWrite(pinLed, LOW);
  }
}