java: Added java samples and applied coding style rules to all previous samples

Signed-off-by: Stefan Andritoiu <stefan.andritoiu@intel.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

examples/java/HMTRPSample.java

@@ -0,0 +1,131 @@
+/*
+ * Author: Stefan Andritoiu <stefan.andritoiu@intel.com>
+ * Copyright (c) 2015 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+//NOT TESTED!!!
+public class HMTRPSample {
+
+	static private final int bufferLength = 255;
+
+	static {
+		try {
+			System.loadLibrary("javaupm_hmtrp");
+		} catch (UnsatisfiedLinkError e) {
+			System.err.println("error in loading native library");
+			System.exit(-1);
+		}
+	}
+
+	private static void printUsage() {
+		System.out.println("Usage:");
+		System.out.println("Pass a commandline argument (any argument) to this program");
+		System.out.println("to query the radio configuration and output it.  NOTE: the");
+		System.out.println("radio must be in CONFIG mode for this to work.");
+		System.out.println("Running this program without arguments will simply transmit");
+		System.out.println("'Hello World!' every second, and output any data received from");
+		System.out.println("another radio.");
+	}
+
+	public static void main(String[] args) throws InterruptedException {
+		// ! [Interesting]
+		// Instantiate a HMTRP radio device on uart 0
+		upm_hmtrp.HMTRP radio = new upm_hmtrp.HMTRP(0);
+
+		// make sure port is initialized properly. 9600 baud is the default.
+		if (!radio.setupTty()) {
+			System.err.println("Failed to setup tty port parameters");
+			System.exit(-1);
+		}
+		printUsage();
+
+		// By default, this radio simply transmits data sent via writeData()
+		// and reads any available data via readData().
+
+		// It can be placed into a configuration mode by grounding the
+		// CONFIG pin on the module. When this is done, the various
+		// configuration query and config methods can be used. In this
+		// example, by default, we just read any data available fom the
+		// device, and periodically transmit "Hello World".
+
+		// If any argument was specified on the command line, do a simple
+		// configuration query and output the results. The radio must be in·
+		// CONFIG mode for this to work.
+
+		if (args.length > 0) {
+			// config mode
+			long[] freq = {0};
+			long[] dataRate = {0};
+			int[] rxBandwidth = {0};
+			short[] modulation = {0};
+			short[] txPower = {0};
+			long[] uartBaud = {0};
+
+			if (radio.getConfig(freq, dataRate, rxBandwidth, modulation, txPower, uartBaud)) {
+				System.out.println("Radio configuration:");
+				System.out.println("freq: " + freq[0] + " dataRate: " + dataRate[0]
+						+ " rxBandwidth: " + rxBandwidth[0] + "Khz");
+				System.out.println("modulation: " + modulation[0] + "Khz txPower: " + txPower[0]
+						+ " uartBaud: " + uartBaud[0]);
+			} else {
+				System.err.println("getConfig() failed.  Make sure the radio is in CONFIG mode.");
+			}
+		} else {
+			// normal read/write mode
+			byte[] radioBuffer = new byte[bufferLength];
+			byte[] hello = "Hello World".getBytes();
+			int counter = 0;
+
+			System.out.println("Running in normal read/write mode.");
+
+			while (true) {
+				// we don't want the read to block in this example, so always
+				// check to see if data is available first.
+				if (radio.dataAvailable()) {
+					int rv = radio.readData(radioBuffer);
+
+					if (rv > 0) {
+						System.out.print("Received: ");
+						for (int i = 0; i < radioBuffer.length; i++)
+							System.out.print((char) radioBuffer[i]);
+						System.out.println();
+					} else {
+						System.err.println("Port read error.");
+						break;
+					}
+					continue;
+				}
+
+				Thread.sleep(100);
+
+				counter++;
+				// every second, transmit "Hello World!"
+				if (counter > 10) {
+					System.out.println("Transmitting hello world...");
+					radio.writeData(hello);
+					counter = 0;
+				}
+			}
+		}
+		// ! [Interesting]
+	}
+}