mirror of
https://github.com/mcgurk/Arduino-USB-HID-RetroJoystickAdapter
synced 2024-11-21 16:45:08 -05:00
229 lines
7.4 KiB
C++
229 lines
7.4 KiB
C++
//Sega Megadrive/Genesis 6-button controller adapter by Kurg 2.9.2016
|
|
//Tested with Arduino Pro Micro (ATmega32U4, 5V) from Ebay ($4)
|
|
//Selected board from Arduino IDE: Arduino Leonardo
|
|
//Joystick2 library from https://github.com/MHeironimus/ArduinoJoystickLibrary
|
|
//https://www.cs.cmu.edu/~chuck/infopg/segasix.txt
|
|
|
|
#include "Joystick2.h"
|
|
|
|
//DB9 pin (9-pin D-connector)
|
|
//Select low Select high 3rd pulse
|
|
//1=Up Up Z
|
|
//2=Down Down Y
|
|
//3=Ground Left X
|
|
//4=Ground Right
|
|
//5=+5V
|
|
//6=A B
|
|
//7=Control("Select")
|
|
//8=Ground
|
|
//9=Start C
|
|
|
|
#define EVENTS_TOTAL 4+6+1 //4 directions, 6 fire-buttons and Start
|
|
#define INPUT_PINS_TOTAL 6
|
|
|
|
//DB9 (port1): 1 2 3 4 6 9
|
|
const uint8_t inputPinsPort1[] = {10, 16, 14, 15, 3, A1};
|
|
#define VCC_PORT1 A0 //DB9 (port1) pin 5 //comment out if not connected to IO-pin
|
|
#define MODE_SELECT_PORT1 A3 //DB9 (port1) pin 7
|
|
//DB9 (port 2) pin 8 = GND
|
|
|
|
//DB9 (port2): 1 2 3 4 6 9
|
|
const uint8_t inputPinsPort2[] = { 5, 6, 7, 8, 4, A2};
|
|
#define VCC_PORT2 9 //DB9 (port 2) pin 5 //comment out if not connected to IO-pin
|
|
#define MODE_SELECT_PORT2 2 //DB9 (port2) pin 7
|
|
//DB9 (port 2) pin 8 = GND
|
|
|
|
uint8_t lastStatusPort1[EVENTS_TOTAL];
|
|
uint8_t newStatusPort1[EVENTS_TOTAL];
|
|
uint8_t lastStatusPort2[EVENTS_TOTAL];
|
|
uint8_t newStatusPort2[EVENTS_TOTAL];
|
|
|
|
|
|
void modeSelect(uint8_t m) {
|
|
digitalWrite(MODE_SELECT_PORT1, m);
|
|
digitalWrite(MODE_SELECT_PORT2, m);
|
|
delayMicroseconds(20);
|
|
}
|
|
|
|
void releaseAll(uint8_t j) {
|
|
delay(20);
|
|
Joystick[j].setButton(0, 0); //BUTTON1
|
|
Joystick[j].setButton(1, 0); //BUTTON2
|
|
Joystick[j].setButton(2, 0); //BUTTON3
|
|
Joystick[j].setButton(3, 0); //BUTTON4
|
|
Joystick[j].setButton(4, 0); //BUTTON5
|
|
Joystick[j].setButton(5, 0); //BUTTON6
|
|
Joystick[j].setButton(6, 0); //BUTTON7
|
|
Joystick[j].setYAxis(0);
|
|
Joystick[j].setXAxis(0);
|
|
Joystick[j].sendState();
|
|
delay(20);
|
|
}
|
|
|
|
void KonamiCode(uint8_t j, uint8_t swap_ab = 0) {
|
|
//https://en.wikipedia.org/wiki/Konami_Code
|
|
//https://en.wikipedia.org/wiki/List_of_Konami_code_games
|
|
//UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, B, A
|
|
releaseAll(j);
|
|
delay(200);
|
|
Joystick[j].setYAxis(-127); Joystick[j].sendState(); //UP
|
|
releaseAll(j);
|
|
Joystick[j].setYAxis(-127); Joystick[j].sendState(); //UP
|
|
releaseAll(j);
|
|
Joystick[j].setYAxis(127); Joystick[j].sendState(); //DOWN
|
|
releaseAll(j);
|
|
Joystick[j].setYAxis(127); Joystick[j].sendState(); //DOWN
|
|
releaseAll(j);
|
|
Joystick[j].setXAxis(-127); Joystick[j].sendState(); //LEFT
|
|
releaseAll(j);
|
|
Joystick[j].setXAxis(127); Joystick[j].sendState(); //RIGHT
|
|
releaseAll(j);
|
|
Joystick[j].setXAxis(-127); Joystick[j].sendState(); //LEFT
|
|
releaseAll(j);
|
|
Joystick[j].setXAxis(127); Joystick[j].sendState(); //RIGHT
|
|
releaseAll(j);
|
|
if (swap_ab) {
|
|
Joystick[j].setButton(0, 1); Joystick[j].sendState(); //BUTTON1 (A)
|
|
releaseAll(j);
|
|
Joystick[j].setButton(1, 1); Joystick[j].sendState(); //BUTTON2 (B)
|
|
releaseAll(j);
|
|
} else {
|
|
Joystick[j].setButton(1, 1); Joystick[j].sendState(); //BUTTON2 (B)
|
|
releaseAll(j);
|
|
Joystick[j].setButton(0, 1); Joystick[j].sendState(); //BUTTON1 (A)
|
|
releaseAll(j);
|
|
}
|
|
delay(100);
|
|
}
|
|
|
|
|
|
void setup() {
|
|
|
|
//clear statusarrays (1=OFF, 0=ON)
|
|
for (uint8_t i = 0; i < EVENTS_TOTAL; i++) {
|
|
lastStatusPort1[i] = 1;
|
|
newStatusPort1[i] = 1;
|
|
lastStatusPort2[i] = 1;
|
|
newStatusPort2[i] = 1;
|
|
}
|
|
|
|
#if defined(VCC_PORT1) && defined(VCC_PORT2)
|
|
pinMode(VCC_PORT1, OUTPUT);
|
|
pinMode(VCC_PORT2, OUTPUT);
|
|
digitalWrite(VCC_PORT1, HIGH);
|
|
digitalWrite(VCC_PORT2, HIGH);
|
|
#endif
|
|
|
|
for (int i=0; i < INPUT_PINS_TOTAL; i++) {
|
|
pinMode(inputPinsPort1[i], INPUT_PULLUP);
|
|
pinMode(inputPinsPort2[i], INPUT_PULLUP);
|
|
}
|
|
|
|
pinMode(MODE_SELECT_PORT1, OUTPUT);
|
|
pinMode(MODE_SELECT_PORT2, OUTPUT);
|
|
modeSelect(HIGH);
|
|
|
|
Joystick[0].begin(false);
|
|
Joystick[1].begin(false);
|
|
|
|
}
|
|
|
|
|
|
void read3buttons() {
|
|
|
|
modeSelect(LOW);
|
|
|
|
newStatusPort1[4] = digitalRead(inputPinsPort1[4]); //A1
|
|
newStatusPort1[7] = digitalRead(inputPinsPort1[5]); //Start1
|
|
newStatusPort2[4] = digitalRead(inputPinsPort2[4]); //A2
|
|
newStatusPort2[7] = digitalRead(inputPinsPort2[5]); //Start2
|
|
|
|
modeSelect(HIGH);
|
|
|
|
for (uint8_t i=0; i < 4; i++) {
|
|
newStatusPort1[i] = digitalRead(inputPinsPort1[i]); //AXES1
|
|
newStatusPort2[i] = digitalRead(inputPinsPort2[i]); //AXES2
|
|
}
|
|
newStatusPort1[5] = digitalRead(inputPinsPort1[4]); //B1
|
|
newStatusPort1[6] = digitalRead(inputPinsPort1[5]); //C1
|
|
newStatusPort2[5] = digitalRead(inputPinsPort2[4]); //B2
|
|
newStatusPort2[6] = digitalRead(inputPinsPort2[5]); //C2
|
|
|
|
}
|
|
|
|
|
|
uint8_t flag1 = 0;
|
|
uint8_t flag2 = 0;
|
|
|
|
void loop() {
|
|
|
|
read3buttons();
|
|
|
|
//read X,Y,Z
|
|
modeSelect(LOW);
|
|
modeSelect(HIGH);
|
|
modeSelect(LOW);
|
|
modeSelect(HIGH);
|
|
newStatusPort1[8] = digitalRead(inputPinsPort1[2]); //X1
|
|
newStatusPort1[9] = digitalRead(inputPinsPort1[1]); //Y1
|
|
newStatusPort1[10] = digitalRead(inputPinsPort1[0]); //Z1
|
|
newStatusPort2[8] = digitalRead(inputPinsPort2[2]); //X2
|
|
newStatusPort2[9] = digitalRead(inputPinsPort2[1]); //Y2
|
|
newStatusPort2[10] = digitalRead(inputPinsPort2[0]); //Z2
|
|
delayMicroseconds(1000);
|
|
|
|
//check for changes - do not raise a flag if nothing changes
|
|
for (uint8_t i=0; i < EVENTS_TOTAL; i++) {
|
|
if (newStatusPort1[i] != lastStatusPort1[i]) {
|
|
lastStatusPort1[i] = newStatusPort1[i];
|
|
flag1 = 1;
|
|
}
|
|
if (newStatusPort2[i] != lastStatusPort2[i]) {
|
|
lastStatusPort2[i] = newStatusPort2[i];
|
|
flag2 = 1;
|
|
}
|
|
}
|
|
|
|
if (flag1) {
|
|
Joystick[0].setYAxis(0);
|
|
Joystick[0].setXAxis(0);
|
|
if (!newStatusPort1[0]) Joystick[0].setYAxis(-127); //UP
|
|
if (!newStatusPort1[1]) Joystick[0].setYAxis(127); //DOWN
|
|
if (!newStatusPort1[2]) Joystick[0].setXAxis(-127); //LEFT
|
|
if (!newStatusPort1[3]) Joystick[0].setXAxis(127); //RIGHT
|
|
Joystick[0].setButton(0, !newStatusPort1[4]); //BUTTON1
|
|
Joystick[0].setButton(1, !newStatusPort1[5]); //BUTTON2
|
|
Joystick[0].setButton(2, !newStatusPort1[6]); //BUTTON3
|
|
Joystick[0].setButton(3, !newStatusPort1[7]); //BUTTON4
|
|
Joystick[0].setButton(4, !newStatusPort1[8]); //BUTTON5
|
|
Joystick[0].setButton(5, !newStatusPort1[9]); //BUTTON6
|
|
Joystick[0].setButton(6, !newStatusPort1[10]); //BUTTON7
|
|
Joystick[0].sendState();
|
|
flag1 = 0;
|
|
if (!newStatusPort1[4] && !newStatusPort1[5] && !newStatusPort1[6] && !newStatusPort1[0]) KonamiCode(0,0);
|
|
if (!newStatusPort1[4] && !newStatusPort1[5] && !newStatusPort1[6] && !newStatusPort1[1]) KonamiCode(0,1);
|
|
}
|
|
|
|
if (flag2) {
|
|
Joystick[1].setYAxis(0);
|
|
Joystick[1].setXAxis(0);
|
|
if (!newStatusPort2[0]) Joystick[1].setYAxis(-127); //UP
|
|
if (!newStatusPort2[1]) Joystick[1].setYAxis(127); //DOWN
|
|
if (!newStatusPort2[2]) Joystick[1].setXAxis(-127); //LEFT
|
|
if (!newStatusPort2[3]) Joystick[1].setXAxis(127); //RIGHT
|
|
Joystick[1].setButton(0, !newStatusPort2[4]); //BUTTON1
|
|
Joystick[1].setButton(1, !newStatusPort2[5]); //BUTTON2
|
|
Joystick[1].setButton(2, !newStatusPort2[6]); //BUTTON3
|
|
Joystick[1].setButton(3, !newStatusPort2[7]); //BUTTON4
|
|
Joystick[1].setButton(4, !newStatusPort2[8]); //BUTTON5
|
|
Joystick[1].setButton(5, !newStatusPort2[9]); //BUTTON6
|
|
Joystick[1].setButton(6, !newStatusPort2[10]); //BUTTON7
|
|
Joystick[1].sendState();
|
|
flag2 = 0;
|
|
if (!newStatusPort2[4] && !newStatusPort2[5] && !newStatusPort2[6] && !newStatusPort2[0]) KonamiCode(0,0);
|
|
if (!newStatusPort2[4] && !newStatusPort2[5] && !newStatusPort2[6] && !newStatusPort2[1]) KonamiCode(0,1);
|
|
}
|
|
|
|
|
|
}
|