/* * Draws a set of thermometers for incoming XBee Sensor data * by Rob Faludi http://faludi.com */ // used for communication via xbee api import processing.serial.*; // xbee api libraries available at http://code.google.com/p/xbee-api/ // Download the zip file, extract it, and copy the xbee-api jar file // and the log4j.jar file (located in the lib folder) inside a "code" // folder under this Processing sketch's folder (save this sketch, then // click the Sketch menu and choose Show Sketch Folder). import com.rapplogic.xbee.api.ApiId; import com.rapplogic.xbee.api.PacketListener; import com.rapplogic.xbee.api.XBee; import com.rapplogic.xbee.api.XBeeResponse; import com.rapplogic.xbee.api.zigbee.ZNetRxIoSampleResponse; String version = "1.01"; // *** REPLACE WITH THE SERIAL PORT (COM PORT) FOR YOUR LOCAL XBEE *** String mySerialPort = "COM13"; // create and initialize a new xbee object XBee xbee = new XBee(); // make an array list of thermometer objects for display ArrayList thermometers = new ArrayList(); // create a font for display PFont font; void setup() { size(800, 600); // screen size smooth(); // anti-aliasing for graphic display // You'll need to generate a font before you can run this sketch. // Click the Tools menu and choose Create Font. Click Sans Serif, // choose a size of 10, and click OK. font = loadFont("SansSerif-10.vlw"); textFont(font); // use the font for text // The log4j.properties file is required by the xbee api library, and // needs to be in your data folder. You can find this file in the xbee // api library you downloaded earlier //PropertyConfigurator.configure(dataPath("")+"log4j.properties"); println(dataPath("")); PropertyConfigurator.configure("D:\\processing2.0.1\\faludi\\sketch_130801a\\data\\log4j.properties"); // Print a list in case the selected one doesn't work out println("Available serial ports:"); println(Serial.list()); try { // opens your serial port defined above, at 9600 baud xbee.open(mySerialPort, 9600); } catch (XBeeException e) { println("** Error opening XBee port: " + e + " **"); println("Is your XBee plugged in to your computer?"); println("Did you set your COM port in the code near line 20?"); } } // draw loop executes continuously void draw() { background(224); // draw a light gray background SensorData data = new SensorData(); // create a data object data = getData(); // put data into the data object data = getSimulatedData(); // uncomment this to use random data for testing // check that actual data came in: if (data.value >=0 && data.address != null) { // check to see if a thermometer object already exists for this sensor int i; boolean foundIt = false; for (i=0; i <thermometers.size(); i++) { if ( ((Thermometer) thermometers.get(i)).address.equals(data.address) ) { foundIt = true; break; } } // process the data value into a Celsius temperature reading for // LM335 with a 1/3 voltage divider // (value as a ratio of 1023 times max ADC voltage times // 3 (voltage divider value) divided by 10mV per degree // minus zero Celsius in Kelvin) float temperatureCelsius = (data.value/1023.0*1.2*3.0*100)-273.15; println(" temp: " + round(temperatureCelsius) + "°C"); // update the thermometer if it exists, otherwise create a new one if (foundIt) { ((Thermometer) thermometers.get(i)).temp = temperatureCelsius; } else if (thermometers.size() < 10) { thermometers.add(new Thermometer(data.address,35,450, (thermometers.size()) * 75 + 40, 20)); ((Thermometer) thermometers.get(i)).temp = temperatureCelsius; } // draw the thermometers on the screen for (int j =0; j<thermometers.size(); j++) { ((Thermometer) thermometers.get(j)).render(); } } } // end of draw loop // defines the data object class SensorData { int value; String address; } // defines the thermometer objects class Thermometer { int sizeX, sizeY, posX, posY; int maxTemp = 40; // max of scale in degrees Celsius int minTemp = -10; // min of scale in degrees Celsius float temp; // stores the temperature locally String address; // stores the address locally Thermometer(String _address, int _sizeX, int _sizeY, int _posX, int _posY) { // initialize thermometer object address = _address; sizeX = _sizeX; sizeY = _sizeY; posX = _posX; posY = _posY; } void render() { // draw thermometer on screen noStroke(); // remove shape edges ellipseMode(CENTER); // center bulb float bulbSize = sizeX + (sizeX * 0.5); // determine bulb size int stemSize = 30; // stem augments fixed red bulb // to help separate it from moving mercury // limit display to range float displayTemp = round( temp); if (temp > maxTemp) { displayTemp = maxTemp + 1; } if ((int)temp < minTemp) { displayTemp = minTemp; } // size for variable red area: float mercury = ( 1 - ( (displayTemp-minTemp) / (maxTemp-minTemp) )); // draw edges of objects in black fill(0); rect(posX-3,posY-3,sizeX+5,sizeY+5); ellipse(posX+sizeX/2,posY+sizeY+stemSize, bulbSize+4,bulbSize+4); rect(posX-3, posY+sizeY, sizeX+5,stemSize+5); // draw gray mercury background fill(64); rect(posX,posY,sizeX,sizeY); // draw red areas fill(255,16,16); // draw mercury area: rect(posX,posY+(sizeY * mercury), sizeX, sizeY-(sizeY * mercury)); // draw stem area: rect(posX, posY+sizeY, sizeX,stemSize); // draw red bulb: ellipse(posX+sizeX/2,posY+sizeY + stemSize, bulbSize,bulbSize); // show text textAlign(LEFT); fill(0); textSize(10); // show sensor address: text(address, posX-10, posY + sizeY + bulbSize + stemSize + 4, 65, 40); // show maximum temperature: text(maxTemp + "°C", posX+sizeX + 5, posY); // show minimum temperature: text(minTemp + "°C", posX+sizeX + 5, posY + sizeY); // show temperature: text(round(temp) + " °C", posX+2 ,posY+(sizeY * mercury+ 14)); } } // used only if getSimulatedData is uncommented in draw loop // SensorData getSimulatedData() { SensorData data = new SensorData(); int value = int(random(750,890)); String address = "00:13:A2:00:12:34:AB:C" + str( round(random(0,9)) ); data.value = value; data.address = address; delay(200); return data; } // queries the XBee for incoming I/O data frames // and parses them into a data object SensorData getData() { SensorData data = new SensorData(); int value = -1; // returns an impossible value if there's an error String address = ""; // returns a null value if there's an error try { // we wait here until a packet is received. XBeeResponse response = xbee.getResponse(); // uncomment next line for additional debugging information //println("Received response " + response.toString()); // check that this frame is a valid I/O sample, then parse it as such if (response.getApiId() == ApiId.ZNET_IO_SAMPLE_RESPONSE && !response.isError()) { ZNetRxIoSampleResponse ioSample = (ZNetRxIoSampleResponse)(XBeeResponse) response; // get the sender's 64-bit address int[] addressArray = ioSample.getRemoteAddress64().getAddress(); // parse the address int array into a formatted string String[] hexAddress = new String[addressArray.length]; for (int i=0; i<addressArray.length;i++) { // format each address byte with leading zeros: hexAddress[i] = String.format("%02x", addressArray[i]); } // join the array together with colons for readability: String senderAddress = join(hexAddress, ":"); print("Sender address: " + senderAddress); data.address = senderAddress; // get the value of the first input pin value = ioSample.getAnalog0(); print(" analog value: " + value ); data.value = value; } else if (!response.isError()) { println("Got error in data frame"); } else { println("Got non-i/o data frame"); } } catch (XBeeException e) { println("Error receiving response: " + e); } return data; // sends the data back to the calling function }
