text: /* Copyright (C) 2014 Kristian Lauszus, TKJ Electronics. All rights reserved.
  
   This software may be distributed and modified under the terms of the GNU
   General Public License version 2 (GPL2) as published by the Free Software
   Foundation and appearing in the file GPL2.TXT included in the packaging of
   this file. Please note that GPL2 Section 2[b] requires that all works based
   on this software must also be made publicly available under the terms of
   the GPL2 ("Copyleft").
  
   Contact information
   -------------------
  
   Kristian Lauszus, TKJ Electronics
   Web      :  http://www.tkjelectronics.com
   e-mail   :  kristianl@tkjelectronics.com
   */
  
  #ifndef _ps4bt_h_
  #define _ps4bt_h_
  
  #include "BTHID.h"
  #include "PS4Parser.h"
  
  /**
   * This class implements support for the PS4 controller via Bluetooth.
   * It uses the BTHID class for all the Bluetooth communication.
   */
  class PS4BT : public BTHID, public PS4Parser {
  public:
          /**
           * Constructor for the PS4BT class.
           * @param  p     Pointer to the BTD class instance.
           * @param  pair  Set this to true in order to pair with the device. If the argument is omitted then it will not pair with it. One can use ::PAIR to set it to true.
           * @param  pin   Write the pin to BTD#btdPin. If argument is omitted, then "0000" will be used.
           */
          PS4BT(BTD *p, bool pair = false, const char *pin = "0000") :
          BTHID(p, pair, pin) {
                  PS4Parser::Reset();
          };
  
          /**
           * Used to check if a PS4 controller is connected.
           * @return Returns true if it is connected.
           */
          bool connected() {
                  return BTHID::connected;
          };
  
  protected:
          /** @name BTHID implementation */
          /**
           * Used to parse Bluetooth HID data.
           * @param len The length of the incoming data.
           * @param buf Pointer to the data buffer.
           */
          virtual void ParseBTHIDData(uint8_t len, uint8_t *buf) {
                  PS4Parser::Parse(len, buf);
          };
  
          /**
           * Called when a device is successfully initialized.
           * Use attachOnInit(void (*funcOnInit)(void)) to call your own function.
           * This is useful for instance if you want to set the LEDs in a specific way.
           */
          virtual void OnInitBTHID() {
                  PS4Parser::Reset();
                  enable_sixaxis(); // Make the controller send out the entire output report
                  if (pFuncOnInit)
                          pFuncOnInit(); // Call the user function
                  else
                          setLed(Blue);
          };
  
          /** Used to reset the different buffers to there default values */
          virtual void ResetBTHID() {
                  PS4Parser::Reset();
          };
          /**@}*/
  
          /** @name PS4Parser implementation */
          virtual void sendOutputReport(PS4Output *output) { // Source: https://github.com/chrippa/ds4drv
                  uint8_t buf[79];
                  memset(buf, 0, sizeof(buf));
  
                  buf[0] = 0x52; // HID BT Set_report (0x50) | Report Type (Output 0x02)
                  buf[1] = 0x11; // Report ID
                  buf[2] = 0x80;
                  buf[4]= 0xFF;
  
                  buf[7] = output->smallRumble; // Small Rumble
                  buf[8] = output->bigRumble; // Big rumble
  
                  buf[9] = output->r; // Red
                  buf[10] = output->g; // Green
                  buf[11] = output->b; // Blue
  
                  buf[12] = output->flashOn; // Time to flash bright (255 = 2.5 seconds)
                  buf[13] = output->flashOff; // Time to flash dark (255 = 2.5 seconds)
  
                  output->reportChanged = false;
  
                  // The PS4 console actually set the four last bytes to a CRC32 checksum, but it seems like it is actually not needed
  
                  HID_Command(buf, sizeof(buf));
          };
          /**@}*/
  
  private:
          void enable_sixaxis() { // Command used to make the PS4 controller send out the entire output report
                  uint8_t buf[2];
                  buf[0] = 0x43; // HID BT Get_report (0x40) | Report Type (Feature 0x03)
                  buf[1] = 0x02; // Report ID
  
                  HID_Command(buf, 2);
          };
  
          void HID_Command(uint8_t *data, uint8_t nbytes) {
                  pBtd->L2CAP_Command(hci_handle, data, nbytes, control_scid[0], control_scid[1]);
          };
  };
  #endif
  