1 /*
2  * Author: Stefan Andritoiu <stefan.andritoiu@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 //NOT TESTED!!!
26 public class HM11Sample {
27 
28 	private static final int BUFSIZ = 1024;
29 
30 	static {
31 		try {
32 			System.loadLibrary("javaupm_hm11");
33 		} catch (UnsatisfiedLinkError e) {
34 			System.err.println("error in loading native library");
35 			System.exit(-1);
36 		}
37 	}
38 
printUsage()39 	private static void printUsage() {
40 		System.out.println("Usage: java HM11Sample [AT command]");
41 
42 		System.out.println("If an argument is supplied on the command line, that argument is");
43 		System.out.println("sent to the module and the response is printed out.");
44 		System.out.println("If no argument is used, then the address and PIN of the module");
45 		System.out.println("are queried and the results printed out.");
46 
47 	}
48 
sendCommand(upm_hm11.HM11 ble, byte[] cmd)49 	private static void sendCommand(upm_hm11.HM11 ble, byte[] cmd) {
50 		byte[] buffer = new byte[BUFSIZ];
51 		ble.writeData(cmd);
52 
53 		// wait up to 1 second
54 		if (ble.dataAvailable(1000)) {
55 			ble.readData(buffer);
56 		} else {
57 			System.err.println("Timed out waiting for response");
58 		}
59 
60 	}
61 
main(String[] args)62 	public static void main(String[] args) throws InterruptedException {
63 		// ! [Interesting]
64 		// Instantiate a HM11 BLE Module on UART 0
65 		upm_hm11.HM11 ble = new upm_hm11.HM11(0);
66 
67 		// make sure port is initialized properly. 9600 baud is the default.
68 		if (!ble.setupTty()) {
69 			System.err.println("Failed to setup tty port parameters");
70 			System.exit(-1);
71 		}
72 
73 		printUsage();
74 
75 		if (args.length > 0) {
76 			System.out.println("Sending command line argument (" + args[0] + ")...");
77 			sendCommand(ble, args[0].getBytes());
78 		} else {
79 			// query the module address
80 			String addr = "AT+ADDR?";
81 			System.out.println("Querying module address (" + addr + ")...");
82 			sendCommand(ble, addr.getBytes());
83 
84 			Thread.sleep(1000);
85 
86 			// query the module address
87 			String pin = "AT+PASS?";
88 			System.out.println("Querying module pin (" + pin + ")...");
89 			sendCommand(ble, pin.getBytes());
90 
91 			// Other potentially useful commands are:
92 			//
93 			// AT+VERS? - query module version
94 			// AT+ROLE0 - set as slave
95 			// AT+ROLE1 - set as master
96 			// AT+CLEAR - clear all previous settings
97 			// AT+RESET - restart the device
98 			//
99 			// A comprehensive list is available from the datasheet at:
100 			// http://www.seeedstudio.com/wiki/images/c/cd/Bluetooth4_en.pdf
101 
102 		}
103 		// ! [Interesting]
104 	}
105 }
106