├── .gitignore
├── README.md
├── index.js
├── mp_nrf52.gif
└── package.json


/.gitignore:
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1 | node_modules


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/README.md:
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 1 | ## NUS console
 2 | 
 3 | This will scan and connect to the first BLE peripheral advertising the nordic UART service (`6e400001b5a3f393e0a9e50e24dcca9e`).
 4 | 
 5 | ![nrf52 console image](mp_nrf52.gif)
 6 | 
 7 | 
 8 | ### noble issue with Node 10
 9 | 
10 | Noble depends on `bluetooth-hci-socket` which (as of today) will [not build on node 10](https://github.com/noble/node-bluetooth-hci-socket/pull/91). The quick fix is to `npm link` the patched version.
11 | 
12 |     git clone -b fix-builds-for-node-10 https://github.com/jrobeson/node-bluetooth-hci-socket.git
13 |     cd node-bluetooth-hci-socket
14 |     npm link
15 | 
16 | go into nus_console folder
17 | 
18 |     npm link bluetooth-hci-socket
19 |     npm install
20 | 


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/index.js:
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 1 | 'use strict';
 2 | const noble = require('noble');
 3 | 
 4 | const NUS_SERVICE_ID = '6e400001b5a3f393e0a9e50e24dcca9e';
 5 | const NUS_RX_CHAR = '6e400003b5a3f393e0a9e50e24dcca9e';
 6 | const NUS_TX_CHAR = '6e400002b5a3f393e0a9e50e24dcca9e';
 7 | 
 8 | var tx_char = null;
 9 | 
10 | noble.on('discover', (peripheral) => {
11 |     noble.stopScanning();
12 |     console.log('Found device with local name: ' + peripheral.advertisement.localName);
13 |     console.log('advertising the following service uuid\'s: ' + peripheral.advertisement.serviceUuids);
14 |     console.log();
15 | 
16 |     peripheral.connect((error) => {
17 | 		if (error) {
18 | 			console.log("connect", error);
19 | 			process.exit(0);
20 | 		}
21 | 
22 | 		peripheral.on('disconnect', () => {
23 | 			process.exit(0);
24 | 		});
25 | 
26 | 		peripheral.discoverServices([], (error, services) => {
27 | 			for (let i = 0; i < services.length; i++) {
28 | 				if (services[i].uuid != NUS_SERVICE_ID)
29 | 					continue;
30 | 				services[i].discoverCharacteristics([], (error, characteristics) => {
31 | 					for (let i = 0; i < characteristics.length; i++) {
32 | 						let char = characteristics[i];
33 | 						if (char.uuid == NUS_RX_CHAR) {
34 | 							char.on('data', (data, isNotification) => {
35 | 								process.stdout.write(data.toString('utf8'));
36 | 							});
37 | 							char.subscribe();
38 | 						} else if (char.uuid == NUS_TX_CHAR) {
39 | 							tx_char = char;
40 | 						}
41 | 					}
42 | 				});
43 | 			}
44 | 		});
45 | 	});
46 | });
47 | 
48 | noble.on('stateChange', (state) => {
49 | 	if (state == "poweredOn")
50 | 		noble.startScanning(NUS_SERVICE_ID);
51 | 	else
52 | 		noble.stopScanning();
53 | });
54 | 
55 | process.stdin.setRawMode(true);
56 | 
57 | process.stdin.on('readable', () => {
58 | 	var chunk = process.stdin.read();
59 | 	if ((chunk !== null) && (tx_char !== null)) {
60 | 		tx_char.write(Buffer.from(chunk), true);
61 | 	}
62 | });
63 | 


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/mp_nrf52.gif:
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https://raw.githubusercontent.com/tralamazza/nus_console/59bc967be259cd81592ef05bd377cfbfe73168da/mp_nrf52.gif


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/package.json:
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 1 | {
 2 |   "name": "nus_console",
 3 |   "version": "1.0.0",
 4 |   "description": "Nordic UART Service console",
 5 |   "main": "index.js",
 6 |   "dependencies": {
 7 |     "noble": "^1.6.0"
 8 |   },
 9 |   "devDependencies": {},
10 |   "scripts": {
11 |     "test": "echo \"Error: no test specified\" && exit 1"
12 |   },
13 |   "author": "Daniel Tralamazza",
14 |   "license": "MIT"
15 | }
16 | 


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