//https://www.cs.cmu.edu/~chuck/infopg/segasix.txt //DB9 (8=GND, 5=VCC): 1 2 3 4 5 6 7 8 9 const uint8_t inputPinsPort1[] = { 2, 3, 4, 5, 6, 7, 8, 0, 9}; const uint8_t inputPinsPort2[] = {10, 16, 14, 15, A0, A1, A2, 0, A3}; // if you use two DB9 connectors solded back to back on your ATmega32u4, you should use this inputs //const uint8_t inputPinsPort1[] = { 2, 3, 4, 5, 6, 7, 8, 0, 9}; //const uint8_t inputPinsPort2[] = {15, A0, A1, A2, A3, 14, 16, 0, 10}; // yet another version (Images/sega_genesis_adapter.jpg) //const uint8_t inputPinsPort1[] = { 5, 6, 7, 8, 9, 4, 2, 0, A2}; //const uint8_t inputPinsPort2[] = {10, 16, 14, 15, A0, 3, A3, 0, A1}; //#define DEBUG inline void translateState(uint8_t *data, uint8_t *state) { state[0] = ~data[0]; state[1] = 127; state[2] = 127; if (!bitRead(data[1], 0)) state[2] = 0; /* up */ if (!bitRead(data[1], 1)) state[2] = 255; /* down */ if (!bitRead(data[1], 2)) state[1] = 0; /* left */ if (!bitRead(data[1], 3)) state[1] = 255; /* right */ } uint8_t J1BTN6 = 0; uint8_t J2BTN6 = 0; uint8_t plugged1 = 0; uint8_t plugged2 = 0; #include "HID.h" #if ARDUINO < 10606 #error The Joystick2 library requires Arduino IDE 1.6.6 or greater. Please update your IDE. #endif #if !defined(USBCON) #error The Joystick2 library can only be used with a USB MCU (e.g. Arduino Leonardo, Arduino Micro, etc.). #endif #if !defined(_USING_HID) #error "legacy HID core (non pluggable)" #endif #define JOYSTICK_REPORT_ID 0x04 #define JOYSTICK2_REPORT_ID 0x05 #define JOYSTICK_DATA_SIZE 2 #define JOYSTICK_STATE_SIZE 3 //================================================================================ //================================================================================ // Joystick (Gamepad) #define HIDDESC_MACRO(REPORT_ID) \ /* Joystick # */ \ 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ \ 0x09, 0x04, /* USAGE (Joystick) */ \ 0xa1, 0x01, /* COLLECTION (Application) */ \ 0x85, REPORT_ID, /* REPORT_ID */ \ /* 8 Buttons */ \ 0x05, 0x09, /* USAGE_PAGE (Button) */ \ 0x19, 0x01, /* USAGE_MINIMUM (Button 1) */ \ 0x29, 0x08, /* USAGE_MAXIMUM (Button 8) */ \ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ \ 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */ \ 0x75, 0x01, /* REPORT_SIZE (1) */ \ 0x95, 0x08, /* REPORT_COUNT (8) */ \ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ \ /* X and Y Axis */ \ 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ \ 0x09, 0x01, /* USAGE (Pointer) */ \ 0xA1, 0x00, /* COLLECTION (Physical) */ \ 0x09, 0x30, /* USAGE (x) */ \ 0x09, 0x31, /* USAGE (y) */ \ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ \ 0x26, 0xff, 0x00, /* LOGICAL_MAXIMUM (255) */ \ 0x75, 0x08, /* REPORT_SIZE (8) */ \ 0x95, 0x02, /* REPORT_COUNT (2) */ \ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ \ 0xc0, /* END_COLLECTION */ \ 0xc0 /* END_COLLECTION */ static const uint8_t hidReportDescriptor[] PROGMEM = { HIDDESC_MACRO(JOYSTICK_REPORT_ID), HIDDESC_MACRO(JOYSTICK2_REPORT_ID) }; class Joystick_ { private: uint8_t joystickId; uint8_t reportId; uint8_t olddata[JOYSTICK_DATA_SIZE]; uint8_t state[JOYSTICK_STATE_SIZE]; uint8_t flag; public: uint8_t type; uint8_t data[JOYSTICK_DATA_SIZE]; Joystick_(uint8_t initJoystickId, uint8_t initReportId) { // Setup HID report structure static bool usbSetup = false; if (!usbSetup) { static HIDSubDescriptor node(hidReportDescriptor, sizeof(hidReportDescriptor)); HID().AppendDescriptor(&node); usbSetup = true; } // Initalize State joystickId = initJoystickId; reportId = initReportId; data[0] = 0; data[1] = 0; memcpy(olddata, data, JOYSTICK_DATA_SIZE); translateState(data, state); sendState(1); } void updateState() { if (memcmp(olddata, data, JOYSTICK_DATA_SIZE)) { memcpy(olddata, data, JOYSTICK_DATA_SIZE); translateState(data, state); flag = 1; } } void sendState(uint8_t force = 0) { if (flag || force) { // HID().SendReport(Report number, array of values in same order as HID descriptor, length) HID().SendReport(reportId, state, JOYSTICK_STATE_SIZE); flag = 0; } } }; Joystick_ Joystick[2] = { Joystick_(0, JOYSTICK_REPORT_ID), Joystick_(1, JOYSTICK2_REPORT_ID) }; //================================================================================ //================================================================================ #define MODE_SELECT_PORT1 inputPinsPort1[6] #define MODE_SELECT_PORT2 inputPinsPort2[6] #define VCC_PORT1 inputPinsPort1[4] #define VCC_PORT2 inputPinsPort2[4] void modeSelect(uint8_t m) { digitalWrite(MODE_SELECT_PORT1, m); digitalWrite(MODE_SELECT_PORT2, m); delayMicroseconds(20); } void setup() { for (uint8_t i = 0; i < 9; i++) { if (inputPinsPort1[i] != 0 && i != 4 && i != 6) pinMode(inputPinsPort1[i], INPUT_PULLUP); if (inputPinsPort2[i] != 0 && i != 4 && i != 6) pinMode(inputPinsPort2[i], INPUT_PULLUP); } //without PULLUP every button are read as pressed down if controller is not connected. pinMode(VCC_PORT1, OUTPUT); pinMode(VCC_PORT2, OUTPUT); digitalWrite(VCC_PORT1, HIGH); digitalWrite(VCC_PORT2, HIGH); pinMode(MODE_SELECT_PORT1, OUTPUT); pinMode(MODE_SELECT_PORT2, OUTPUT); modeSelect(HIGH); #ifdef DEBUG Serial.begin(9600); #endif } void loop() { Joystick[0].data[0] = 0xff; Joystick[1].data[0] = 0xff; Joystick[0].data[1] = 0xff; Joystick[1].data[1] = 0xff; modeSelect(LOW); bitWrite(Joystick[0].data[1], 6, digitalRead(inputPinsPort1[2])); //detect1 j1 bitWrite(Joystick[0].data[1], 7, digitalRead(inputPinsPort1[3])); //detect2 j1 bitWrite(Joystick[1].data[1], 6, digitalRead(inputPinsPort2[2])); //detect1 j2 bitWrite(Joystick[1].data[1], 7, digitalRead(inputPinsPort2[3])); //detect2 j2 bitWrite(Joystick[0].data[0], 0, digitalRead(inputPinsPort1[5])); //A1 bitWrite(Joystick[0].data[0], 3, digitalRead(inputPinsPort1[8])); //Start1 bitWrite(Joystick[1].data[0], 0, digitalRead(inputPinsPort2[5])); //A2 bitWrite(Joystick[1].data[0], 3, digitalRead(inputPinsPort2[8])); //Start2 modeSelect(HIGH); for (uint8_t i = 0; i < 4; i++) { bitWrite(Joystick[0].data[1], i, digitalRead(inputPinsPort1[i])); //AXES1 bitWrite(Joystick[1].data[1], i, digitalRead(inputPinsPort2[i])); //AXES2 } bitWrite(Joystick[0].data[0], 1, digitalRead(inputPinsPort1[5])); //B1 bitWrite(Joystick[0].data[0], 2, digitalRead(inputPinsPort1[8])); //C1 bitWrite(Joystick[1].data[0], 1, digitalRead(inputPinsPort2[5])); //B2 bitWrite(Joystick[1].data[0], 2, digitalRead(inputPinsPort2[8])); //C2 //read X,Y,Z,mode modeSelect(LOW); modeSelect(HIGH); modeSelect(LOW); modeSelect(HIGH); if (J1BTN6) { bitWrite(Joystick[0].data[0], 4, digitalRead(inputPinsPort1[2])); //X1 bitWrite(Joystick[0].data[0], 5, digitalRead(inputPinsPort1[1])); //Y1 bitWrite(Joystick[0].data[0], 6, digitalRead(inputPinsPort1[0])); //Z1 bitWrite(Joystick[0].data[0], 7, digitalRead(inputPinsPort1[3])); //mode } if (J2BTN6) { bitWrite(Joystick[1].data[0], 4, digitalRead(inputPinsPort2[2])); //X1 bitWrite(Joystick[1].data[0], 5, digitalRead(inputPinsPort2[1])); //Y1 bitWrite(Joystick[1].data[0], 6, digitalRead(inputPinsPort2[0])); //Z1 bitWrite(Joystick[1].data[0], 7, digitalRead(inputPinsPort2[3])); //mode } //detect button mode and detect if controller is unplugged uint8_t detect1 = !(Joystick[0].data[1] & B11000000); if (!plugged1 && detect1) { plugged1 = 1; digitalWrite(VCC_PORT1, LOW); delay(100); digitalWrite(VCC_PORT1, HIGH); if (!digitalRead(inputPinsPort1[0]) && !digitalRead(inputPinsPort1[1])) J1BTN6 = 1; } if (!detect1) { plugged1 = 0; J1BTN6 = 0; } //detect button mode and detect if controller is unplugged uint8_t detect2 = !(Joystick[1].data[1] & B11000000); if (!plugged2 && detect2) { plugged2 = 1; digitalWrite(VCC_PORT2, LOW); delay(100); digitalWrite(VCC_PORT2, HIGH); if (!digitalRead(inputPinsPort2[0]) && !digitalRead(inputPinsPort2[1])) J2BTN6 = 1; } if (!detect2) { plugged2 = 0; J2BTN6 = 0; } #ifdef DEBUG Serial.print(" data0 j1: 0x"); Serial.print(Joystick[0].data[0], HEX); Serial.print(" data0 j2: 0x"); Serial.print(Joystick[1].data[0], HEX); Serial.print(" data1 j1: 0x"); Serial.print(Joystick[0].data[1], HEX); Serial.print(" data1 j2: 0x"); Serial.print(Joystick[1].data[1], HEX); Serial.print(" 6btn j1: 0x"); Serial.print(J1BTN6, HEX); Serial.print(" 6btn j2: 0x"); Serial.print(J2BTN6, HEX); Serial.println(); delay(50); Serial.flush(); #endif Joystick[0].updateState(); Joystick[1].updateState(); Joystick[0].sendState(); Joystick[1].sendState(); delayMicroseconds(1000); }