README.md

NESController

An Arduino library for reading input data from a Nintendo Entertainment System controller.

Usage

1. Create an an instance of NESController with the pin numbers for the CLOCK, LATCH, and DATA lines. See the NES controller pinout for wiring information.
2. Call read() to read the current shift register data into a byte. Each button represents 1 bit in the byte ordered as A, B, SELECT, START, UP, DOWN, LEFT, RIGHT. A logical 0 represents a down press.
3. Use isPressed(int button) or bitwise operators to check input data.

#include <NESController.h>

const int CLOCK_PIN = 2;
const int LATCH_PIN = 3;
const int DATA_PIN = 4;

NESController controller = NESController(CLOCK_PIN, LATCH_PIN, DATA_PIN);

void setup() {
  Serial.begin(9600);
}

void loop() {
  byte state = controller.read();
  delay(100);

  if (controller.isPressed(NES_A_BUTTON)) {
    Serial.println("A");
  }
  if (controller.isPressed(NES_B_BUTTON)) {
    Serial.println("B");
  }
  if (controller.isPressed(NES_LEFT_BUTTON)) {
    Serial.println("LEFT");
  }
  if (controller.isPressed(NES_RIGHT_BUTTON)) {
    Serial.println("RIGHT");
  }
}