79 lines
1.9 KiB
C++
79 lines
1.9 KiB
C++
/*
|
|
Description: Interfacing a 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"
|
|
|
|
uint8_t lastStatusPort1 = 0xff;
|
|
uint8_t newStatusPort1 = 0xff;
|
|
|
|
|
|
const int latch = 8;
|
|
const int clock = 9;
|
|
const int data = 7;
|
|
|
|
#define latchlow digitalWrite(latch, LOW)
|
|
#define latchhigh digitalWrite(latch, HIGH)
|
|
#define clocklow digitalWrite(clock, LOW)
|
|
#define clockhigh digitalWrite(clock, HIGH)
|
|
#define dataread digitalRead(data)
|
|
|
|
// http://www.mit.edu/~tarvizo/nes-controller.html
|
|
#define wait delayMicroseconds(12)
|
|
|
|
byte output;
|
|
|
|
void setup() {
|
|
|
|
// Serial.begin(9600);
|
|
pinMode(latch, OUTPUT);
|
|
pinMode(clock, OUTPUT);
|
|
pinMode(data, INPUT);
|
|
|
|
Joystick[0].begin(false);
|
|
}
|
|
|
|
void loop() {
|
|
output = 0;
|
|
ReadNESjoy();
|
|
//Serial.println(output,BIN);
|
|
newStatusPort1 = output;
|
|
if (lastStatusPort1 != newStatusPort1) {
|
|
Joystick[0].setYAxis(0);
|
|
Joystick[0].setXAxis(0);
|
|
if (!bitRead(newStatusPort1,4)) Joystick[0].setYAxis(-127); //UP
|
|
if (!bitRead(newStatusPort1,5)) Joystick[0].setYAxis(127); //DOWN
|
|
if (!bitRead(newStatusPort1,6)) Joystick[0].setXAxis(-127); //LEFT
|
|
if (!bitRead(newStatusPort1,7)) Joystick[0].setXAxis(127); //RIGHT
|
|
Joystick[0].setButton(0, !bitRead(newStatusPort1,0)); //BUTTON1 (A)
|
|
Joystick[0].setButton(1, !bitRead(newStatusPort1,1)); //BUTTON2 (B)
|
|
Joystick[0].setButton(2, !bitRead(newStatusPort1,2)); //BUTTON3 (Select)
|
|
Joystick[0].setButton(3, !bitRead(newStatusPort1,3)); //BUTTON4 (Start)
|
|
Joystick[0].sendState();
|
|
lastStatusPort1 = newStatusPort1;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
void ReadNESjoy() {
|
|
latchlow;
|
|
clocklow;
|
|
latchhigh;
|
|
wait;
|
|
latchlow;
|
|
|
|
for (int i = 0; i < 8; i++) {
|
|
output += dataread * (1 << i);
|
|
clockhigh;
|
|
wait;
|
|
clocklow;
|
|
wait;
|
|
}
|
|
}
|