USB_Host_Shield_2.0/PS4USB.h

/* 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 _ps4usb_h_
#define _ps4usb_h_

#include "hiduniversal.h"
#include "PS4Parser.h"

#define PS4_VID 0x054C // Sony Corporation
#define PS4_PID 0x05C4 // PS4 Controller

/**
 * This class implements support for the PS4 controller via USB.
 * It uses the HIDUniversal class for all the USB communication.
 */
class PS4USB : public HIDUniversal, public PS4Parser {
public:
        /**
         * Constructor for the PS4USB class.
         * @param  p   Pointer to the USBHost class instance.
         */
        PS4USB(USBHost *p) :
        HIDUniversal(p) {
                PS4Parser::Reset();
        };

        /**
         * Used to check if a PS4 controller is connected.
         * @return Returns true if it is connected.
         */
        bool connected() {
                return HIDUniversal::isReady() && HIDUniversal::VID == PS4_VID && HIDUniversal::PID == PS4_PID;
        };

        /**
         * Used to call your own function when the device is successfully initialized.
         * @param funcOnInit Function to call.
         */
        void attachOnInit(void (*funcOnInit)(void)) {
                pFuncOnInit = funcOnInit;
        };

protected:
        /** @name HIDUniversal implementation */
        /**
         * Used to parse USB HID data.
         * @param hid       Pointer to the HID class.
         * @param is_rpt_id Only used for Hubs.
         * @param len       The length of the incoming data.
         * @param buf       Pointer to the data buffer.
         */
        virtual void ParseHIDData(USBHID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf) {
                if (HIDUniversal::VID == PS4_VID && HIDUniversal::PID == PS4_PID)
                        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 uint8_t OnInitSuccessful() {
                if (HIDUniversal::VID == PS4_VID && HIDUniversal::PID == PS4_PID) {
                        PS4Parser::Reset();
                        if (pFuncOnInit)
                                pFuncOnInit(); // Call the user function
                        else
                                setLed(Blue);
                };
                return 0;
        };
        /**@}*/

        /** @name PS4Parser implementation */
        virtual void sendOutputReport(PS4Output *output) { // Source: https://github.com/chrippa/ds4drv
                uint8_t buf[32];
                memset(buf, 0, sizeof(buf));

                buf[0] = 0x05; // Report ID
                buf[1]= 0xFF;

                buf[4] = output->smallRumble; // Small Rumble
                buf[5] = output->bigRumble; // Big rumble

                buf[6] = output->r; // Red
                buf[7] = output->g; // Green
                buf[8] = output->b; // Blue

                buf[9] = output->flashOn; // Time to flash bright (255 = 2.5 seconds)
                buf[10] = 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

                pUsb->outTransfer(bAddress, epInfo[ hidInterfaces[0].epIndex[epInterruptOutIndex] ].epAddr, sizeof(buf), buf);
        };
        /**@}*/

        /** @name USBDeviceConfig implementation */
        /**
         * Used by the USB core to check what this driver support.
         * @param  vid The device's VID.
         * @param  pid The device's PID.
         * @return     Returns true if the device's VID and PID matches this driver.
         */
        virtual bool VIDPIDOK(uint16_t vid, uint16_t pid) {
                return (vid == PS4_VID && pid == PS4_PID);
        };
        /**@}*/

private:
        void (*pFuncOnInit)(void); // Pointer to function called in onInit()
};
#endif