Standalone Arduino Test

arduinoTest/arduinoEcho/arduinoEcho.ino

@@ -1,18 +1,13 @@
-const int ledPin = 11;
-
 void setup() {
-  pinMode(ledPin, OUTPUT);
+  pinMode(LED_BUILTIN, OUTPUT);
   Serial.begin(9600);
   Serial.write("READY");
 }
 
 void loop() {
-
   while (Serial.available()) {
-    digitalWrite(ledPin, HIGH);
+    digitalWrite(LED_BUILTIN, HIGH);
     Serial.write(Serial.read());
   }
-
-  delay(100);
-  digitalWrite(ledPin, LOW);
+  digitalWrite(LED_BUILTIN, LOW);
 }

arduinoTest/serialDuplexTest.js

@@ -0,0 +1,51 @@
+/*
+serialDuplexTest.js
+
+Tests the functtionality of the serial port library.
+To be used in conjunction with the Arduino sketch called ArduinoEcho.ino
+*/
+'use strict';
+
+// serial port initialization:
+var serialport = require('../serialport');     // include the serialport library
+var SerialPort = serialport.SerialPort;         // make a local instance of serial
+var portName = process.argv[2];                 // get the port name from the command line
+var myPort = new SerialPort(portName);          // open the serial port:
+var output = 32;                                // ASCII space; lowest printable character
+var byteCount = 0;                              // number of bytes read
+
+function openPort() {
+  console.log('port open');
+  console.log('baud rate: ' + myPort.options.baudRate);
+  var outString = String.fromCharCode(output);
+  console.log('String is: ' + outString);
+  myPort.write(outString);
+}
+
+function receiveData(data) {
+  if (output <= 126) {        // highest printable character: ASCII ~
+    output++;
+  } else {
+    output = 32;              // lowest printable character: space
+  }
+  console.log('received: ' + data);
+  console.log('Byte count: ' + byteCount);
+  byteCount++;
+  var outString = String.fromCharCode(output);
+  myPort.write(outString);
+  console.log('Sent: ' + outString);
+}
+
+function closePort() {
+  console.log('port closed');
+}
+
+function serialError(error) {
+  console.log('there was an error with the serial port: ' + error);
+  myPort.close();
+}
+
+myPort.on('open', openPort);      // called when the serial port opens
+myPort.on('data', receiveData);    // called when data comes in
+myPort.on('close', closePort);    // called when the serial port closes
+myPort.on('error', serialError);  // called when there's an error with the serial port