Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package jcan2; import java.util.Arrays; import java.util.concurrent.Callable; import java.util.concurrent.ExecutionException; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.Future; import java.util.concurrent.TimeUnit; import java.util.concurrent.TimeoutException; import java.util.logging.Level; import java.util.logging.Logger; import javax.swing.JProgressBar; import javax.swing.JTextArea; import jssc.SerialPort; import jssc.SerialPortException; import jssc.SerialPortList; import org.json.JSONException; import org.json.JSONObject; /** * * @author Micha */ public class SimpleSerial { private String serialPortName = "Error - no Port found"; private static final boolean SERIAL_DEBUG = false; private static final int MAX_DATA_PER_IMPORT = 20; private static final int WAIT_MS = 50; //time to wait for the device to respond private static final int WAIT_MS_POINTS = WAIT_MS + 10 * MAX_DATA_PER_IMPORT; //time to wait for the device to respond //Test: 100ms = 15 points //security factor 200% --> time_ms = 15 ms per point private boolean deviceConnected = false; private String currentPortName; public SimpleSerial() { super(); } public String getPortName() { return serialPortName; } public int searchDevicePort() throws InterruptedException { String[] portNames = SerialPortList.getPortNames(); if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("\nFound ports: " + Arrays.toString(portNames)); int portNumber = -1; for (int i = 0; i < portNames.length; i++) { currentPortName = portNames[i]; ExecutorService executor = Executors.newSingleThreadExecutor(); Future<String> future = executor.submit(new PortSearchTask()); try { String returnPort = future.get(3, TimeUnit.SECONDS); if (!"NULL".equals(returnPort)) { portNumber = i; i = portNames.length; //quit loop } } catch (ExecutionException ex) { Logger.getLogger(SimpleSerial.class.getName()).log(Level.SEVERE, null, ex); } catch (TimeoutException ex) { Logger.getLogger(SimpleSerial.class.getName()).log(Level.SEVERE, null, ex); if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("\nOpening port " + currentPortName + " has timed out"); } executor.shutdownNow(); } if (portNumber < 0) { deviceConnected = false; return 0; } else { serialPortName = portNames[portNumber]; deviceConnected = true; if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("\nDevice detected on port " + serialPortName); return 1; //success } } public boolean deviceConnected() { return deviceConnected; } public JSONObject getRealTimeData() throws InterruptedException, JSONException { if (!"Error - no Port found".equals(serialPortName)) { try { SerialPort serialPort = new SerialPort(serialPortName); serialPort.openPort();//Open serial port serialPort.setParams(SerialPort.BAUDRATE_9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);//Set params. Also you can set params by this string: serialPort.setParams(9600, 8, 1, 0); serialPort.writeBytes("$ORRTV*11\n".getBytes());//Write data to port Thread.sleep(WAIT_MS * 5); String realTime = serialPort.readString(); serialPort.closePort(); int temp = 0; JSONObject output = new JSONObject(); if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("\n" + realTime); //decompose the received data String[] lines = realTime.split("\n"); for (int i = 0; i < lines.length; i++) { String[] seperated = lines[i].split(","); if (SERIAL_DEBUG) BeMapEditor.mainWindow.append(seperated[0]); if ("$BMRTV".equals(seperated[0])) { output.put("err", 0); output.put("temp", Integer.parseInt(seperated[8]) / 100.0); //temp data output.put("hum", Integer.parseInt(seperated[7]) / 100.0); output.put("gaz1", Integer.parseInt(seperated[5])); output.put("gaz2", Integer.parseInt(seperated[6])); output.put("ax", Double.parseDouble(seperated[9])); output.put("ay", Double.parseDouble(seperated[10])); output.put("az", Double.parseDouble(seperated[11])); return output; } } //error handling output.put("err", 1); return output; } catch (SerialPortException ex) { Logger.getLogger(SimpleSerial.class.getName()).log(Level.SEVERE, null, ex); } } return null; } //returns the number of points stored or -1 if error public int importDataFromDevice(JProgressBar progressBar, JTextArea status) throws InterruptedException, JSONException { if ("Error - no Port found".equals(serialPortName)) return -1; else { SerialPort serialPort = new SerialPort(serialPortName); try { serialPort.openPort();//Open serial port serialPort.setParams(SerialPort.BAUDRATE_115200, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);//Set params. Also you can set params by this string: serialPort.setParams(9600, 8, 1, 0); serialPort.writeBytes("$ORUSR*11\n".getBytes());//Write data to port Thread.sleep(WAIT_MS); String userString = serialPort.readString(); int usr = decodeUserID(userString); if (usr > 0) { BeMapEditor.mainWindow.setUsr(usr); status.append("\nUser ID: " + usr); } else if (usr == -1) { //code for getting usr id from server //$ORUSR,25*11\n status.append("\nError: Getting user ID from server not yet supported!"); BeMapEditor.mainWindow.setUsr(-1); } else { status.append("\nError: No User ID found! Import aborted."); return -1; } serialPort.writeBytes("$ORNUM*11\n".getBytes()); Thread.sleep(WAIT_MS); String numberString = serialPort.readString(); int totalNumber = decodeNbPoints(numberString); if (totalNumber > 0) status.append("\nNumber of points to import: " + totalNumber); else if (totalNumber == 0) { status.append("\nNo points stored to import! "); return 0; } else { status.append("\nError: Number of Points"); return -1; } //prepare track to import BeMapEditor.trackOrganiser.createNewTrack("Import"); int nbRequests = (totalNumber / (MAX_DATA_PER_IMPORT)) + 1; int rest = totalNumber - (nbRequests - 1) * MAX_DATA_PER_IMPORT; //nb of points for the last request if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("\nNumber of requests necessary: " + nbRequests); if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("\nPoints resting for last request: " + rest); //init progress bar progressBar.setMaximum(nbRequests); for (int i = 0; i < (nbRequests - 1); i++) { //import serie of points int offset = i * MAX_DATA_PER_IMPORT; if (importSerieOfPoints(serialPort, MAX_DATA_PER_IMPORT, offset) < 0) return 0; //actualize progress bar progressBar.setValue(i + 1); } int final_offset = (nbRequests - 1) * MAX_DATA_PER_IMPORT; if (importSerieOfPoints(serialPort, rest, final_offset) < 0) return 0; //import the rest of the points progressBar.setValue(nbRequests); status.append("\n" + totalNumber + " Points successfully imported"); serialPort.writeString("$ORMEM*11\n"); Thread.sleep(WAIT_MS); decodeMemoryState(serialPort.readString()); serialPort.closePort();//Close serial port BeMapEditor.trackOrganiser.postImportTreatment(progressBar); return 1; } catch (SerialPortException ex) { return 0;//do not print error } } } public int sendDeleteRequest() { if ("Error - no Port found".equals(serialPortName)) return -1; else { SerialPort serialPort = new SerialPort(serialPortName); try { serialPort.openPort();//Open serial port serialPort.setParams(SerialPort.BAUDRATE_9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);//Set params. Also you can set params by this string: serialPort.setParams(9600, 8, 1, 0); serialPort.writeString("$ORCLR*11\n"); serialPort.closePort(); return 1; } catch (SerialPortException ex) { return 0;//do not print error } } } public int updateMemoryState() throws InterruptedException { if ("Error - no Port found".equals(serialPortName)) return -1; else { SerialPort serialPort = new SerialPort(serialPortName); try { serialPort.openPort();//Open serial port serialPort.setParams(SerialPort.BAUDRATE_9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);//Set params. Also you can set params by this string: serialPort.setParams(9600, 8, 1, 0); serialPort.writeString("$ORMEM*11\n"); Thread.sleep(WAIT_MS); decodeMemoryState(serialPort.readString()); serialPort.closePort(); return 1; } catch (SerialPortException ex) { return 0;//do not print error } } } /** * BMCFG - config * @param memoryState */ private void decodeMemoryState(String memoryState) { //decompose the received data String[] lines = memoryState.split("\n"); for (int i = 0; i < lines.length; i++) { if (SERIAL_DEBUG) BeMapEditor.mainWindow.append(lines[i] + "\n"); String[] seperated = lines[i].split(","); if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("Received: " + lines[i] + "\n"); if ("$BMMEM".equals(seperated[0])) { int a = Integer.parseInt(seperated[1]); int b = Integer.parseInt(seperated[2]); int state = a / b; if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("Memory state: " + state + "\n"); BeMapEditor.mainWindow.setBar(state); } else if ("$BMERR".equals(seperated[0])) { if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("Memory state error\n"); } else if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("Memory state error\n"); } } private int importSerieOfPoints(SerialPort serialPort, int nb, int offset) throws InterruptedException { try { String send = "$ORGET," + offset + "," + nb + "*11\n"; if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("\nSent request: " + send); serialPort.writeBytes(send.getBytes()); Thread.sleep(WAIT_MS_POINTS); String answer = serialPort.readString(); if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("\nAnswer: " + answer); if (BeMapEditor.trackOrganiser.getData().treatData(answer) == nb) return 1; else return 0; } catch (SerialPortException ex) { Logger.getLogger(SimpleSerial.class.getName()).log(Level.SEVERE, null, ex); return 0; } } private int decodeNbPoints(String numberString) { //decompose the received data String[] lines = numberString.split("\n"); int nbPoints = -1; for (int i = 0; i < lines.length; i++) { String[] seperated = lines[i].split(","); if ("$BMNUM".equals(seperated[0])) { nbPoints = Integer.parseInt(seperated[1]); return nbPoints; } } return nbPoints; } //returns usr id from string or -1 if error private int decodeUserID(String userString) { //decompose the received data String[] lines = userString.split("\n"); for (int i = 0; i < lines.length; i++) { if (SERIAL_DEBUG) BeMapEditor.mainWindow.append(lines[i] + "\n"); String[] seperated = lines[i].split(","); if ("$BMUSR".equals(seperated[0])) { return Integer.parseInt(seperated[1]); } else if ("$BMERR".equals(seperated[0])) { return -1; } } return -1; } class PortSearchTask implements Callable<String> { @Override public String call() throws Exception { String port = "NULL"; SerialPort serialPort = new SerialPort(currentPortName); if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("\nOpening port " + currentPortName); try { serialPort.openPort();//Open serial port serialPort.setParams(SerialPort.BAUDRATE_9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);//Set params. Also you can set params by this string: serialPort.setParams(9600, 8, 1, 0); serialPort.writeBytes("$ORUSR*11\n".getBytes());//Write data to port Thread.sleep(WAIT_MS); byte[] buffer = serialPort.readBytes(1);//Read 1 bytes from serial port if (buffer[0] == 36) port = currentPortName; //success on this port when device answers with $ else if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("\nError: Port found but device doesn't answer with $"); serialPort.closePort();//Close serial port } catch (SerialPortException ex) { //do not print error if (SERIAL_DEBUG) BeMapEditor.mainWindow.append("\nOpening port " + currentPortName + " failed"); } return port; } } }