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#include "Arduino.h" |
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/*
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LOOKING AT THE PLUG |
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------------------------------- |
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PIN 1->| o o o | o o o | o o o | |
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\_____________________________/ |
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PIN # USAGE |
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DATA |
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CMD/COMMAND |
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N/C (9 Volts unused) |
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GND |
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VCC |
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ATT |
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CLK/CLOCK |
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N/C |
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ACK |
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*/ |
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#define DATA1 2 |
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#define CMD1 3 |
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#define ATT1 4 |
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#define CLK1 5 |
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#ifndef GAMEPAD_COUNT |
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#define GAMEPAD_COUNT 4 |
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#endif |
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// not counting dpad
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#define BUTTON_COUNT 12 |
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#define JOYSTICK_STATE_SIZE 6 |
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//#define DEBUG
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#include "gamepad/Gamepad.h" |
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GAMEPAD_CLASS gamepad; |
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enum
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{ |
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// in data[1]
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// in digital mode, right joysticks are these 4 buttons too
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PS_BTN_O = 8192, |
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PS_BTN_X = 16384, |
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PS_BTN_SQUARE = 32768, |
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PS_BTN_TRIANGLE = 4096, |
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// shoulder
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PS_BTN_R1 = 2048, |
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PS_BTN_R2 = 512, |
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PS_BTN_L1 = 1024, |
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PS_BTN_L2 = 256, |
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// in data[2]
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PS_BTN_START = 8, |
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PS_BTN_SELECT = 1, |
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// in digital mode, left joysticks are the d-pad
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PS_BTN_UP = 16, |
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PS_BTN_DOWN = 64, |
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PS_BTN_LEFT = 128, |
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PS_BTN_RIGHT = 32, |
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PS_BTN_R3 = 4, |
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PS_BTN_L3 = 2, |
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}; |
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// pressing one of these buttons on the controller... (read below)
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static const uint16_t translateFromButton[BUTTON_COUNT] = { |
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PS_BTN_O, |
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PS_BTN_X, |
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PS_BTN_SQUARE, |
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PS_BTN_TRIANGLE, |
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PS_BTN_R1, |
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PS_BTN_R2, |
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PS_BTN_L1, |
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PS_BTN_L2, |
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PS_BTN_START, |
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PS_BTN_SELECT, |
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PS_BTN_R3, |
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PS_BTN_L3, |
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}; |
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// ... translates to one of these buttons over HID
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static const uint32_t translateToHid[BUTTON_COUNT] = { |
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BUTTON_A, |
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BUTTON_B, |
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BUTTON_Y, |
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BUTTON_X, |
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BUTTON_R1, |
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BUTTON_R2, |
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BUTTON_L1, |
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BUTTON_L2, |
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BUTTON_START, |
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BUTTON_SELECT, |
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BUTTON_R3, |
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BUTTON_L3, |
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}; |
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class Joystick_ { |
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private: |
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uint8_t olddata[JOYSTICK_STATE_SIZE]; |
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public: |
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uint8_t type; |
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uint8_t data[JOYSTICK_STATE_SIZE]; |
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Joystick_() { |
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data[0] = 0; |
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data[1] = 0; |
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data[2] = 127; |
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data[3] = 127; |
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data[4] = 127; |
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data[5] = 127; |
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memcpy(olddata, data, JOYSTICK_STATE_SIZE); |
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} |
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bool down(int button) const { |
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return *(uint16_t*)(data)&button; |
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} |
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void updateState(uint8_t c) { |
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if (type != 0x73 && type != 0x53) { |
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data[2] = 127; |
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data[3] = 127; |
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data[4] = 127; |
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data[5] = 127; |
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} |
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if (type == 0x41 || type == 0x73 || type == 0x53) { |
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if (memcmp(olddata, data, JOYSTICK_STATE_SIZE)) { |
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memcpy(olddata, data, JOYSTICK_STATE_SIZE); |
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sendState(c); |
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} |
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} |
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} |
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signed char getHat() { |
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if (down(PS_BTN_DOWN)) { |
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if (down(PS_BTN_RIGHT)) { |
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return DPAD_DOWN_RIGHT; |
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} else if (down(PS_BTN_LEFT)) { |
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return DPAD_DOWN_LEFT; |
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} else { |
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return DPAD_DOWN; |
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} |
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} else if (down(PS_BTN_UP)) { |
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if (down(PS_BTN_RIGHT)) { |
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return DPAD_UP_RIGHT; |
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} else if (down(PS_BTN_LEFT)) { |
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return DPAD_UP_LEFT; |
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} else { |
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return DPAD_UP; |
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} |
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} else if (down(PS_BTN_RIGHT)) { |
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return DPAD_RIGHT; |
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} else if (down(PS_BTN_LEFT)) { |
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return DPAD_LEFT; |
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} else { |
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return DPAD_CENTERED; |
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} |
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} |
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int16_t translateAxis(uint8_t v) { |
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//map(value, fromLow, fromHigh, toLow, toHigh)
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return v == 128 ? 0 : map(v, 0, 255, -32767, 32767); |
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} |
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void sendState(uint8_t c) { |
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#ifdef DEBUG |
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uint16_t mask = 1; |
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Serial.print(c); |
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Serial.print(": type: 0x"); |
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Serial.print(type, HEX); |
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Serial.print(" hex: 0x"); |
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Serial.print(data[0], HEX); |
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Serial.print(" 0x"); |
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Serial.print(data[1], HEX); |
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Serial.print(" 0x"); |
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Serial.print(data[2], HEX); |
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Serial.print(" 0x"); |
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Serial.print(data[3], HEX); |
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Serial.print(" 0x"); |
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Serial.print(data[4], HEX); |
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Serial.print(" 0x"); |
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Serial.print(data[5], HEX); |
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Serial.print(" dec: "); |
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Serial.print(data[0]); |
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Serial.print(" "); |
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Serial.print(data[1]); |
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Serial.print(" "); |
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Serial.print(data[2]); |
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Serial.print(" "); |
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Serial.print(data[3]); |
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Serial.print(" "); |
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Serial.print(data[4]); |
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Serial.print(" "); |
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Serial.print(data[5]); |
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Serial.println(); |
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for (uint8_t _i = 0; _i <= 32; _i++) { |
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if (down(mask)) { |
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Serial.print("db: "); |
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Serial.println(mask); |
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} |
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mask *= 2; |
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} |
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Serial.flush(); |
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#endif |
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//gamepad.buttons(i, *(uint16_t*)(&data[0]));
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//gamepad.setHatSync(i, DPAD_CENTERED);
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gamepad.buttons(c, 0); |
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// if start and select are held at the same time, send menu and only menu
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if (down(PS_BTN_START) && down(PS_BTN_SELECT)) { |
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gamepad.press(c, BUTTON_MENU); |
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} else { |
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// actually send buttons held
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for (uint8_t btn = 0; btn < BUTTON_COUNT; btn++) { |
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if (down(translateFromButton[btn])) { |
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gamepad.press(c, translateToHid[btn]); |
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} |
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} |
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} |
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gamepad.setAxis(c, translateAxis(data[4]), translateAxis(data[5]), translateAxis(data[2]), translateAxis(data[3]), 0, 0, getHat()); |
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} |
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}; |
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Joystick_ Joystick[GAMEPAD_COUNT]; |
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uint8_t shift(uint8_t _dataOut) // Does the actual shifting, both in and out simultaneously
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{ |
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uint8_t _temp = 0; |
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uint8_t _dataIn = 0; |
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uint8_t _delay = 6; //2 unstable; //clock 250kHz
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delayMicroseconds(100); //max acknowledge waiting time 100us
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for (uint8_t _i = 0; _i <= 7; _i++) { |
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if (_dataOut & (1 << _i)) // write bit
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digitalWrite(CMD1, HIGH); |
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else |
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digitalWrite(CMD1, LOW); |
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digitalWrite(CLK1, LOW); // read bit
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delayMicroseconds(_delay); |
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_temp = digitalRead(DATA1); |
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if (_temp) { |
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_dataIn = _dataIn | (B00000001 << _i); |
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} |
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digitalWrite(CLK1, HIGH); |
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delayMicroseconds(_delay); |
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} |
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return _dataIn; |
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} |
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void setup() { |
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#ifdef DEBUG |
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Serial.begin(115200); |
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#endif |
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gamepad.begin(); |
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pinMode(DATA1, INPUT_PULLUP); |
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pinMode(CMD1, OUTPUT); |
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pinMode(ATT1, OUTPUT); |
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pinMode(CLK1, OUTPUT); |
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} |
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void loop() { |
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// http://problemkaputt.de/psx-spx.htm#controllerandmemorycardsignals
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uint8_t head, padding, multitap; |
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// first: read gamepad normally
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digitalWrite(ATT1, LOW); |
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//digitalWrite(ATT2, LOW);
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head = shift(0x01); |
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Joystick[0].type = shift(0x42); |
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padding = shift(0x01); //read multitap in next command
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Joystick[0].data[0] = ~shift(0x00); //buttons
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Joystick[0].data[1] = ~shift(0x00); //buttons
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Joystick[0].data[2] = shift(0x00); //right analog
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Joystick[0].data[3] = shift(0x00); //right analog
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Joystick[0].data[4] = shift(0x00); //left analog
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Joystick[0].data[5] = shift(0x00); //left analog
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digitalWrite(ATT1, HIGH); |
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//digitalWrite(ATT2, HIGH);
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//delay(100);
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// second: check and read multitap
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digitalWrite(ATT1, LOW); |
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head = shift(0x01); |
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multitap = shift(0x42); |
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padding = shift(0x00); //next time normal read
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if (multitap == 0x80) { |
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for (uint8_t i = 0; i < GAMEPAD_COUNT; i++) { |
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Joystick[i].type = shift(0x00); |
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padding = shift(0x00); |
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Joystick[i].data[0] = ~shift(0x00); //buttons
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Joystick[i].data[1] = ~shift(0x00); //buttons
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Joystick[i].data[2] = shift(0x00); //right analog
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Joystick[i].data[3] = shift(0x00); //right analog
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Joystick[i].data[4] = shift(0x00); //left analog
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Joystick[i].data[5] = shift(0x00); //left analog
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} |
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} |
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digitalWrite(ATT1, HIGH); |
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#ifdef DEBUGE |
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Serial.print(" multitap: "); |
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Serial.println(multitap, HEX); |
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#endif |
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for (uint8_t i = 0; i < GAMEPAD_COUNT; i++) { |
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Joystick[i].updateState(i); |
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} |
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delayMicroseconds(1000); |
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} |
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