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magnetometer-bearing-listener.js
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magnetometer-bearing-listener.js
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// subscribes to the magnetometer service and prints out bearing value
var BBCMicrobit = require('../index'); // or require('bbc-microbit')
var period = 160; // ms
console.log('Scanning for microbit');
BBCMicrobit.discover(function(microbit) {
console.log('\tdiscovered microbit: id = %s, address = %s', microbit.id, microbit.address);
microbit.on('disconnect', function() {
console.log('\tmicrobit disconnected!');
process.exit(0);
});
microbit.on('magnetometerBearingChange', function(bearing) {
console.log('\ton -> magnetometer bearing change: magnetometer bearing = %d', bearing);
});
console.log('connecting to microbit');
microbit.connectAndSetUp(function() {
console.log('\tconnected to microbit');
console.log('setting magnetometer period to %d ms', period);
microbit.writeMagnetometerPeriod(period, function() {
console.log('\tmagnetometer period set');
console.log('subscribing to magnetometer bearing');
microbit.subscribeMagnetometerBearing(function() {
console.log('\tsubscribed to magnetometer bearing');
});
});
});
});