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Create RetroJoystickAdapter-NES.ino

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Adriano Afonso 2016-09-07 11:39:56 +01:00 committed by GitHub
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Examples/RetroJoystickAdapter-NES.ino Normal file
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/*
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;
}
}