blink.js & blink.ino

blink.ino

int bytesRead = 0;
boolean isPinSet;
byte stored[2];


void setup() {
  Serial.begin(57600);
}

void loop() {
  while (Serial.available()) {
    int data = Serial.read();

    stored[bytesRead] = data;
    bytesRead++;

    if (bytesRead == 2) {
      if (isPinSet == false) {
        isPinSet = true;
        pinMode(stored[0], OUTPUT);
      } else {
        digitalWrite(stored[0], stored[1]);
      }
      bytesRead = 0;
    }
    // Serial.write(Serial.read());
  }
}

blink.js

var serial, raddress, pin;

serial = require("../serialport.js");
raddress = /usb|acm|com/i;
pin = 13;

serial.list(function(err, result) {
  var address, port, byte;
  var read = new Buffer(0);

  if (result.length) {
    address = result.filter(function(val) {
      // Match only addresss that Arduino cares about
      // ttyUSB#, cu.usbmodem#, COM#
      if ( raddress.test(val.comName) ) {
        return val;
      }
    }).map(function(val) {
      return val.comName;
    })[0];


    port = new serial.SerialPort(address, {
      baudrate: 57600,
      buffersize: 1
    });

    port.on("open", function() {
      var byte;

      function loop() {
        port.write([pin, (byte ^= 0x01)]);
      }

      setInterval(loop, 500);
    });
  } else {
    console.log("No valid port found");
  }
});