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      1 /*
      2  * Author: Stefan Andritoiu <stefan.andritoiu (at) intel.com>
      3  * Copyright (c) 2015 Intel Corporation.
      4  *
      5  * Permission is hereby granted, free of charge, to any person obtaining
      6  * a copy of this software and associated documentation files (the
      7  * "Software"), to deal in the Software without restriction, including
      8  * without limitation the rights to use, copy, modify, merge, publish,
      9  * distribute, sublicense, and/or sell copies of the Software, and to
     10  * permit persons to whom the Software is furnished to do so, subject to
     11  * the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be
     14  * included in all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     21  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 
     25 import upm_nrf24l01.Callback;
     26 
     27 //NOT TESTED!!!
     28 public class NRF24L01_receiverSample {
     29 
     30 	static private final byte[] local_address = {0x01, 0x01, 0x01, 0x01, 0x01};
     31 	static private final byte[] broadcast_address = {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
     32 			(byte) 0xFF, (byte) 0xFF};
     33 
     34 	static {
     35 		try {
     36 			System.loadLibrary("javaupm_nrf24l01");
     37 		} catch (UnsatisfiedLinkError e) {
     38 			System.err.println("error in loading native library");
     39 			System.exit(-1);
     40 		}
     41 	}
     42 
     43 	public static void main(String[] args) throws InterruptedException {
     44 		// ! [Interesting]
     45 		upm_nrf24l01.NRF24L01 comm = new upm_nrf24l01.NRF24L01((short) 7, (short) 8);
     46 
     47 		Callback callback = new ReceiverCallback(comm);
     48 
     49 		comm.setSourceAddress(local_address);
     50 		comm.setDestinationAddress(broadcast_address);
     51 		comm.setPayload((short) upm_nrf24l01.javaupm_nrf24l01Constants.MAX_BUFFER);
     52 		comm.configure();
     53 		comm.setSpeedRate(upm_nrf24l01.speed_rate_t.NRF_250KBPS);
     54 		comm.setChannel((short) 99);
     55 		comm.setDataReceivedHandler(callback);
     56 
     57 		while (true) {
     58 			comm.pollListener();
     59 		}
     60 
     61 		// ! [Interesting]
     62 	}
     63 }
     64 
     65 class ReceiverCallback extends Callback {
     66 
     67 	private upm_nrf24l01.NRF24L01 comm = null;
     68 
     69 	public ReceiverCallback(upm_nrf24l01.NRF24L01 comm) {
     70 		super();
     71 		this.comm = comm;
     72 	}
     73 	public void run() {
     74 		if (comm != null) {
     75 			short[] rx_buffer = comm.getM_rxBuffer();
     76 			System.out.print("Received: ");
     77 			for (int i = 0; i < rx_buffer.length; i++)
     78 				System.out.print(rx_buffer[i]);
     79 			System.out.println();
     80 		} else {
     81 			System.out.println("No NRF24L01 instance given to callback");
     82 		}
     83 	}
     84 }