mirror of
https://github.com/mcgurk/Arduino-USB-HID-RetroJoystickAdapter
synced 2024-11-21 08:35:05 -05:00
128 lines
3.3 KiB
C++
128 lines
3.3 KiB
C++
/*
|
|
Description: Interfacing a 2-port NES controller with a PC with an Arduino.
|
|
Coded by: Prodigity
|
|
Date: 1 December 2011
|
|
Revision: V0.93 (beta)
|
|
Modified by: Matt Booth (20 December 2014)
|
|
Adapted for USB (ATmega32U4, 5V) by Kurg 3.9.2016
|
|
*/
|
|
|
|
#include "Joystick2.h"
|
|
|
|
#define EVENTS_TOTAL 4+2+2 //4 directions, 2 fire-buttons and Start + Select
|
|
|
|
uint8_t lastStatusPort1[EVENTS_TOTAL];
|
|
uint8_t newStatusPort1[EVENTS_TOTAL];
|
|
uint8_t lastStatusPort2[EVENTS_TOTAL];
|
|
uint8_t newStatusPort2[EVENTS_TOTAL];
|
|
|
|
|
|
#define CLOCK1 7
|
|
#define LATCH1 8
|
|
#define DATA1 9
|
|
|
|
#define CLOCK2 2
|
|
#define LATCH2 3
|
|
#define DATA2 4
|
|
|
|
// http://www.mit.edu/~tarvizo/nes-controller.html
|
|
|
|
|
|
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;
|
|
}
|
|
|
|
pinMode(LATCH1, OUTPUT);
|
|
pinMode(CLOCK1, OUTPUT);
|
|
pinMode(DATA1, INPUT);
|
|
pinMode(LATCH2, OUTPUT);
|
|
pinMode(CLOCK2, OUTPUT);
|
|
pinMode(DATA2, INPUT);
|
|
|
|
Joystick[0].begin(false);
|
|
Joystick[1].begin(false);
|
|
}
|
|
|
|
|
|
uint8_t flag1 = 0;
|
|
uint8_t flag2 = 0;
|
|
|
|
|
|
void loop() {
|
|
|
|
ReadNESjoy();
|
|
|
|
//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[4]) Joystick[0].setYAxis(-127); //UP
|
|
if (!newStatusPort1[5]) Joystick[0].setYAxis(127); //DOWN
|
|
if (!newStatusPort1[6]) Joystick[0].setXAxis(-127); //LEFT
|
|
if (!newStatusPort1[7]) Joystick[0].setXAxis(127); //RIGHT
|
|
Joystick[0].setButton(0, !newStatusPort1[0]); //BUTTON1 (A)
|
|
Joystick[0].setButton(1, !newStatusPort1[1]); //BUTTON2 (B)
|
|
Joystick[0].setButton(2, !newStatusPort1[2]); //BUTTON3 (Select)
|
|
Joystick[0].setButton(3, !newStatusPort1[3]); //BUTTON4 (Start)
|
|
}
|
|
|
|
if (flag2) {
|
|
Joystick[1].setYAxis(0);
|
|
Joystick[1].setXAxis(0);
|
|
if (!newStatusPort2[4]) Joystick[1].setYAxis(-127); //UP
|
|
if (!newStatusPort2[5]) Joystick[1].setYAxis(127); //DOWN
|
|
if (!newStatusPort2[6]) Joystick[1].setXAxis(-127); //LEFT
|
|
if (!newStatusPort2[7]) Joystick[1].setXAxis(127); //RIGHT
|
|
Joystick[1].setButton(0, !newStatusPort2[0]); //BUTTON1 (A)
|
|
Joystick[1].setButton(1, !newStatusPort2[1]); //BUTTON2 (B)
|
|
Joystick[1].setButton(2, !newStatusPort2[2]); //BUTTON3 (Select)
|
|
Joystick[1].setButton(3, !newStatusPort2[3]); //BUTTON4 (Start)
|
|
}
|
|
|
|
if (flag1) Joystick[0].sendState();
|
|
if (flag2) Joystick[1].sendState();
|
|
flag1 = 0;
|
|
flag2 = 0;
|
|
|
|
}
|
|
|
|
#define latchlow digitalWrite(LATCH1, LOW); digitalWrite(LATCH2, LOW);
|
|
#define latchhigh digitalWrite(LATCH1, HIGH); digitalWrite(LATCH2, HIGH)
|
|
#define clocklow digitalWrite(CLOCK1, LOW); digitalWrite(CLOCK2, LOW)
|
|
#define clockhigh digitalWrite(CLOCK1, HIGH); digitalWrite(CLOCK2, HIGH)
|
|
#define wait delayMicroseconds(12)
|
|
|
|
void ReadNESjoy() {
|
|
latchlow;
|
|
clocklow;
|
|
latchhigh;
|
|
wait;
|
|
latchlow;
|
|
|
|
for (int i = 0; i < 8; i++) {
|
|
newStatusPort1[i] = digitalRead(DATA1);
|
|
newStatusPort2[i] = digitalRead(DATA2);
|
|
clockhigh;
|
|
wait;
|
|
clocklow;
|
|
wait;
|
|
}
|
|
}
|