/* 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" /** * Generated from the standard Ethernet CRC-32 polynomial: * x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x^1+x^0 * Source: http://www.opensource.apple.com/source/xnu/xnu-1456.1.26/bsd/libkern/crc32.c */ const uint32_t crc32_table[] PROGMEM = { 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d }; /* * There are multiple 16-bit CRC polynomials in common use, but this is * *the* standard CRC-32 polynomial, first popularized by Ethernet. * x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x^1+x^0 */ #define CRC32_POLY_LE 0xedb88320 static inline uint32_t crc32_le_generic(uint32_t crc, uint8_t const *p, size_t len, uint32_t polynomial) { // Source: https://github.com/torvalds/linux/blob/c4cf498dc0241fa2d758dba177634268446afb06/lib/crc32.c int i; while (len--) { crc ^= *p++; for (i = 0; i < 8; i++) crc = (crc >> 1) ^ ((crc & 1) ? polynomial : 0); } return crc; } static inline uint32_t crc32(uint32_t crc, const void *buf, size_t size) { #if 0 // Use a table, as it's faster, but takes up more space // Inspired by: http://www.opensource.apple.com/source/xnu/xnu-1456.1.26/bsd/libkern/crc32.c const uint8_t *p = (const uint8_t*)buf; while (size--) crc = pgm_read_dword(&crc32_table[*p++ ^ (crc & 0xFF)]) ^ (crc >> 8); return crc; #else // Can be used to save flash, but is slower return crc32_le_generic(crc, (uint8_t const*)buf, size, CRC32_POLY_LE); #endif }; /** * 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), output_sequence_counter(0) { 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 // See the series of patches here: https://patchwork.kernel.org/project/linux-input/cover/20201219062336.72568-1-roderick@gaikai.com/ uint8_t buf[1 /* BT DATA Output Report */ + 1 /* report id */ + 1 /* seq_tag */ + 1 /* tag */ + 47 /* common */ + 24 /* reserved */ + 4 /* crc32 */]; memset(buf, 0, sizeof(buf)); if (PS4Parser::isPs4) { 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) // The PS4 console actually set the four last bytes to a CRC32 checksum, but it seems like it is actually not needed } else if (PS4Parser::isPs5) { // Send as a Bluetooth HID DATA output report on the interrupt channel buf[0] = 0xA2; // HID BT DATA (0xA0) | Report Type (Output 0x02) buf[0x01] = 0x31; // Report ID buf[0x02] = (output_sequence_counter++ << 4) | 0x0; // Highest 4-bit is a sequence number, which needs to be increased every report. Lowest 4-bit is tag and can be zero for now. buf[0x03] = 0x10; // Magic number must be set to 0x10 buf[0x01 + 3] = 0xFF; // feature flags 1 buf[0x02 + 3]= 0xF7; // feature flags 2 buf[0x03 + 3] = output->smallRumble; // Small Rumble buf[0x04 + 3] = output->bigRumble; // Big rumble // 5-7 headphone, speaker, mic volume, audio flags buf[0x09 + 3] = 0; // (uint8_t)output->microphoneLed; // 0x0A mute flags // Adaptive Triggers: 0x0B-0x14 right, 0x15 unknown, 0x16-0x1F left // rightTrigger.processTrigger(&buf[0x0B + 3]); // right // leftTrigger.processTrigger(&buf[0x16 + 3]); // left // 0x20-0x24 unknown // 0x25 trigger motor effect strengths // 0x26 speaker volume // player LEDs buf[0x27 + 3] = 0x03; // led brightness, pulse buf[0x2A + 3] = 0x02; //output->disableLeds ? 0x01 : 0x2; // led pulse option // buf[0x2B] LED brightness, 0 = full, 1= medium, 2 = low // buf[0x2C + 3] = output->playerLeds; // 5 white player LEDs // lightbar buf[0x2D + 3] = output->r; // Red buf[0x2E + 3] = output->g; // Green buf[0x2F + 3] = output->b; // Blue uint32_t crc = ~crc32(0xFFFFFFFF, buf, sizeof(buf) - 4 /* Do not include the crc32 */); // Note how the report type is also included in the output report buf[75] = crc & 0xFF; buf[76] = (crc >> 8) & 0xFF; buf[77] = (crc >> 16); buf[78] = (crc >> 24); } output->reportChanged = false; HID_Command(buf, sizeof(buf)); }; /**@}*/ private: void enable_sixaxis() { uint8_t buf[2]; // Command used to make the PS4 controller send out the entire output report buf[0] = 0x43; // HID BT Get_report (0x40) | Report Type (Feature 0x03) buf[1] = 0x02; // Report ID HID_Command(buf, 2); // Command used to make the PS5 controller send out the entire output report // Request the paring info. This makes the controller send out the full report - see: // https://patchwork.kernel.org/project/linux-input/cover/20201219062336.72568-1-roderick@gaikai.com/ buf[0] = 0x43; // HID BT Get_report (0x40) | Report Type (Feature 0x03) buf[1] = 0x09; // Report ID for paring info // Send the Bluetooth Get_report Feature report on the control channel 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]); }; uint8_t output_sequence_counter; }; #endif