first commit

Software/NodeJS/libs/sensors/base/analogSensor.js

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+var util         = require('util')
+var Sensor       = require('./sensor')
+var commands     = require('../../commands')
+
+function AnalogSensor(pin) {
+  Sensor.apply(this, Array.prototype.slice.call(arguments))
+  this.pin = pin
+}
+util.inherits(AnalogSensor, Sensor)
+AnalogSensor.prototype = new AnalogSensor()
+
+AnalogSensor.prototype.read = function(length) {
+  if (typeof length == 'undefined')
+    length = this.board.BYTESLEN
+
+  var writeRet = this.board.writeBytes(commands.aRead.concat([this.pin, commands.unused, commands.unused]))
+  if (writeRet) {
+    this.board.readByte()
+    var bytes = this.board.readBytes(length)
+    if (bytes instanceof Buffer) {
+      return bytes[1] * 256 + bytes[2]
+    } else {
+      return false
+    }
+  } else {
+    return false
+  }
+}
+AnalogSensor.prototype.write = function(value) {
+  return this.board.writeBytes(commands.aWrite.concat([this.pin, value, commands.unused]))
+}
+
+module.exports = AnalogSensor