AJ Keller
89 linhas
2.3 KiB
JavaScript
89 linhas
2.3 KiB
JavaScript
/**
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* This is an example from the readme.md
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* On windows you should run with PowerShell not git bash.
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* Install
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* [nodejs](https://nodejs.org/en/)
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*
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* To run:
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* change directory to this file `cd examples/debug`
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* do `npm install`
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* then `npm start`
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*/
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var debug = false; // Pretty print any bytes in and out... it's amazing...
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var verbose = true; // Adds verbosity to functions
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var OpenBCIBoard = require('openbci').OpenBCIBoard;
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var ourBoard = new OpenBCIBoard({
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debug: debug,
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verbose: verbose
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});
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ourBoard.autoFindOpenBCIBoard().then(portName => {
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if (portName) {
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/**
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* Connect to the board with portName
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* Only works if one board is plugged in
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* i.e. ourBoard.connect(portName).....
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*/
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ourBoard.connect(portName) // Port name is a serial port name, see `.listPorts()`
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.then(() => {
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ourBoard.on('ready', () => {
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ourBoard.streamStart();
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ourBoard.on('sample', (sample) => {
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/** Work with sample */
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for (let i = 0; i < ourBoard.numberOfChannels(); i++) {
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console.log(`Channel ${(i + 1)}: ${sample.channelData[i].toFixed(8)} Volts.`);
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// prints to the console
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// "Channel 1: 0.00001987 Volts."
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// "Channel 2: 0.00002255 Volts."
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// ...
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// "Channel 8: -0.00001875 Volts."
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}
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});
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});
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});
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} else {
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/** Unable to auto find OpenBCI board */
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console.log('Unable to auto find OpenBCI board');
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}
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});
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function exitHandler (options, err) {
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if (options.cleanup) {
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if (verbose) console.log('clean');
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ourBoard.removeAllListeners();
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/** Do additional clean up here */
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}
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if (err) console.log(err.stack);
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if (options.exit) {
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if (verbose) console.log('exit');
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ourBoard.disconnect().catch(console.log);
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}
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}
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if (process.platform === 'win32') {
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const rl = require('readline').createInterface({
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input: process.stdin,
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output: process.stdout
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});
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rl.on('SIGINT', function () {
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process.emit('SIGINT');
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});
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}
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// do something when app is closing
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process.on('exit', exitHandler.bind(null, {
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cleanup: true
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}));
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// catches ctrl+c event
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process.on('SIGINT', exitHandler.bind(null, {
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exit: true
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}));
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// catches uncaught exceptions
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process.on('uncaughtException', exitHandler.bind(null, {
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exit: true
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}));
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