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lkassolkasso
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update examples
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‎examples/setup_connect.js

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var MetaWear = require('../index')//require('metawear');
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var ref = require('ref');
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MetaWear.discoverByAddress('c8:4b:aa:97:50:05', function(device) {
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//MetaWear.discover(function (device) {
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console.log('got em');
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// you can be notified of disconnects
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device.on('disconnect', function () {
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console.log('we got disconnected! :( ');
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});
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// Call connect and set up - this calls mbl_mw_metawearboard_initialize()
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device.connectAndSetUp(function (error) {
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console.log('were connected!');
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// Adjust link speed - set the min conn interval to 7.5ms and the max conn interval to 7.5ms
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// Adjust link speed - set the latency to 0ms and the timeout to 4000ms
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// Connection interval = how often devices talk - min is 7.5ms, it increases in steps of 1.25ms
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// Slave latency = metawear can choose not to answer when central asks for an update (i.e metawear can sleep longer - doesn't affect transfer speeds)
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// Connection supervision timeout = determines timeout from last data exchange (tells central how long to wait to attempt to reconnect to a lost conn - if your metawear goes in and out of range often, it is better to have a short timeout)
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// This is not guaranteed to work, central can reject peripheral and vice-versa. Apple only accepts 15ms for example.
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MetaWear.mbl_mw_settings_set_connection_parameters(device.board, 7.5, 7.5, 0, 4000);
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console.log('link speed updated');
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// Everything we know about the device:
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console.log(device);
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// Calls using CDK CPP:
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model = MetaWear.mbl_mw_metawearboard_get_model(device.board);
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console.log('Model: ' + model);
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device.modelDescription = MetaWear.mbl_mw_metawearboard_get_model_name(device.board);
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console.log('Model Name: ' + device.modelDescription);
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var present = MetaWear.mbl_mw_metawearboard_lookup_module(device.board, 'GYRO');
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console.log('Gyroscope: ' + (present == -1 ? 'Not Present' : 'Present'));
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present = MetaWear.mbl_mw_metawearboard_lookup_module(device.board, 'ACCELEROMETER');
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console.log('Accelerometer: ' + (present == -1 ? 'Not Present' : 'Present'));
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present = MetaWear.mbl_mw_metawearboard_lookup_module(device.board, 'MAGNETOMETER');
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console.log('Magnetometer: ' + (present == -1 ? 'Not Present' : 'Present'));
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present = MetaWear.mbl_mw_metawearboard_lookup_module(device.board, 'SENSOR_FUSION');
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console.log('Sensor Fusion: ' + (present == -1 ? 'Not Present' : 'Present'));
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// Calls Noble APIs:
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device.readManufacturerName(function (error, manufacturerName) {
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console.log('Manufacturer Name: ' + manufacturerName);
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});
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device.readSerialNumber(function (error, serialNumber) {
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console.log('Serial #: ' + serialNumber);
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});
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device.readHardwareRevision(function (error, hardwareRevision) {
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console.log('Hardware Revision: ' + hardwareRevision);
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});
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device.readFirmwareRevision(function (error, firmwareRevision) {
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console.log('Firmware Revision: ' + firmwareRevision);
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});
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device.readModelNumber(function (error, modelNumber) {
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device.modelNumber = modelNumber;
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console.log('Model #: ' + modelNumber);
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});
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setTimeout(function () {
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device.disconnect(function (error) {
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console.log('disconnect call finished');
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process.exit(0);
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});
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}, 1000);
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});
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});

‎examples/stream_acc.js

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var MetaWear = require('../index');
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var MetaWear = require('metawear');
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var ref = require('ref')
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async function mainAsync(mac) {

‎examples/stream_acc_accounter.js

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var MetaWear = require('metawear');
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var ref = require('ref');
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async function mainAsync(mac) {
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// Find device with MAC address
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var device = await new Promise((resolve, reject) => MetaWear.discoverByAddress(mac.toLowerCase(), d => resolve(d)))
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// Connect to device with MAC address
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await new Promise((resolve, reject) => {
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console.log('Connecting...')
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device.connectAndSetUp(error => {
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console.log('Connected.')
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if(error == null) resolve(null)
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else reject(error)
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})
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})
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// Get the accelerometer signal
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let acc = MetaWear.mbl_mw_acc_get_acceleration_data_signal(device.board);
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// Add a counter to the accelerometer signal
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let accounter = await new Promise((resolve, reject) => {
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MetaWear.mbl_mw_dataprocessor_accounter_create(acc, ref.NULL, MetaWear.FnVoid_VoidP_DataProcessorP.toPointer((ctx, pointer) => {
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console.log('Accounter Created');
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resolve(pointer);
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}))
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});
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console.log(accounter);
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console.log('Set up stream.')
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MetaWear.mbl_mw_datasignal_subscribe(accounter, ref.NULL, MetaWear.FnVoid_VoidP_DataP.toPointer((ctx, pointer) => {
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var data = pointer.deref();
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var value = data.parseValue();
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console.log('epoch: ' + data.epoch + ' acc: ' + value.x + ' ' + value.y + ' ' + value.z)
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}))
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console.log('Start accelerometer.')
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MetaWear.mbl_mw_acc_enable_acceleration_sampling(device.board)
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MetaWear.mbl_mw_acc_start(device.board)
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process.openStdin().addListener("data", data => {
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console.log('Reset.')
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MetaWear.mbl_mw_debug_reset(device.board)
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})
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}
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mainAsync(process.argv[2])
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‎examples/stream_acc_accumulator.js

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var MetaWear = require('metawear');
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var cbindings = require('./MetaWear-SDK-Cpp/bindings/javascript/cbindings.js');
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var ref = require('ref');
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async function mainAsync(mac) {
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// Find device with MAC address
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var device = await new Promise((resolve, reject) => MetaWear.discoverByAddress(mac.toLowerCase(), d => resolve(d)))
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// Connect to device with MAC address
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await new Promise((resolve, reject) => {
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console.log('Connecting...')
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device.connectAndSetUp(error => {
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console.log('Connected.')
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if(error == null) resolve(null)
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else reject(error)
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})
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})
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// Get the accelerometer signal
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let baro = MetaWear.mbl_mw_baro_bosch_get_pressure_data_signal(device.board);
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// Create an averager of the
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let accumulator = await new Promise((resolve, reject) => {
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MetaWear.mbl_mw_dataprocessor_accumulator_create(baro, ref.NULL, MetaWear.FnVoid_VoidP_DataProcessorP.toPointer((ctx, pointer) => {
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console.log('Accumulator Created');
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resolve(pointer);
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}))
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});
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console.log(accumulator);
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MetaWear.mbl_mw_dataprocessor_set_accumulator_state(accumulator, 0);
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console.log('Set up stream.')
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MetaWear.mbl_mw_datasignal_subscribe(accumulator, ref.NULL, MetaWear.FnVoid_VoidP_DataP.toPointer((ctx, pointer) => {
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var data = pointer.deref();
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var value = data.parseValue();
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console.log('epoch: ' + data.epoch + ' pressure: ' + value)
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}))
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console.log('Start barometer.')
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MetaWear.mbl_mw_baro_bosch_start(device.board);
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process.openStdin().addListener("data", data => {
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console.log('Reset.')
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MetaWear.mbl_mw_debug_reset(device.board)
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})
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}
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mainAsync(process.argv[2])
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‎examples/stream_acc_averager.js

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var MetaWear = require('metawear');
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var cbindings = require('./MetaWear-SDK-Cpp/bindings/javascript/cbindings.js');
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var ref = require('ref');
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async function mainAsync(mac) {
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// Find device with MAC address
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var device = await new Promise((resolve, reject) => MetaWear.discoverByAddress(mac.toLowerCase(), d => resolve(d)))
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// Connect to device with MAC address
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await new Promise((resolve, reject) => {
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console.log('Connecting...')
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device.connectAndSetUp(error => {
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console.log('Connected.')
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if(error == null) resolve(null)
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else reject(error)
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})
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})
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// Get the accelerometer signal
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let acc = MetaWear.mbl_mw_acc_get_acceleration_data_signal(device.board);
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let acc_x = MetaWear.mbl_mw_datasignal_get_component(acc, cbindings.Const.ACC_ACCEL_X_AXIS_INDEX);
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// Create an averager of the
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let averager = await new Promise((resolve, reject) => {
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MetaWear.mbl_mw_dataprocessor_average_create(acc_x, 8, ref.NULL, MetaWear.FnVoid_VoidP_DataProcessorP.toPointer((ctx, pointer) => {
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console.log('Averager Created');
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resolve(pointer);
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}))
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});
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console.log(averager);
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console.log('Set up stream.')
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MetaWear.mbl_mw_datasignal_subscribe(averager, ref.NULL, MetaWear.FnVoid_VoidP_DataP.toPointer((ctx, pointer) => {
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var data = pointer.deref();
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var value = data.parseValue();
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console.log('epoch: ' + data.epoch + ' acc_x averaged: ' + value)
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}))
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console.log('Start accelerometer.')
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MetaWear.mbl_mw_acc_enable_acceleration_sampling(device.board)
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MetaWear.mbl_mw_acc_start(device.board)
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process.openStdin().addListener("data", data => {
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console.log('Reset.')
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MetaWear.mbl_mw_debug_reset(device.board)
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})
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}
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mainAsync(process.argv[2])
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‎examples/stream_acc_buffer.js

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var MetaWear = require('metawear');
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var cbindings = require('./MetaWear-SDK-Cpp/bindings/javascript/cbindings.js');
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var ref = require('ref');
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async function setupStream(device) {
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// Get the accelerometer signal
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console.log('Get Accelerometer Signal');
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let acc = MetaWear.mbl_mw_acc_get_acceleration_data_signal(device.board);
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// Create an averager of the
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let buffer = await new Promise((resolve, reject) => {
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MetaWear.mbl_mw_dataprocessor_buffer_create(acc, ref.NULL, MetaWear.FnVoid_VoidP_DataProcessorP.toPointer((ctx, pointer) => {
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console.log('Buffer Created');
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resolve(pointer);
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}))
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});
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console.log(buffer);
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console.log('Set up stream.')
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MetaWear.mbl_mw_datasignal_subscribe(buffer, ref.NULL, MetaWear.FnVoid_VoidP_DataP.toPointer((ctx, pointer) => {
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var data = pointer.deref();
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var value = data.parseValue();
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console.log(value);
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}))
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console.log('Start accelerometer.');
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MetaWear.mbl_mw_acc_enable_acceleration_sampling(device.board);
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MetaWear.mbl_mw_acc_start(device.board);
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}
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async function mainAsync(mac) {
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// Find device with MAC address
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console.log('Find device');
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var device = await new Promise((resolve, reject) => MetaWear.discoverByAddress(mac.toLowerCase(), d => resolve(d)))
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console.log('Found device');
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console.log('Connecting...')
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await new Promise((resolve, reject) => {
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device.connectAndSetUp(error => {
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if(error == null) resolve(null)
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else reject(error)
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})
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});
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console.log('Connected.');
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setupStream(device);
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process.openStdin().addListener("data", data => {
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console.log('Reset.')
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MetaWear.mbl_mw_debug_reset(device.board)
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})
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}
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mainAsync(process.argv[2])
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‎examples/stream_baro_comp.js

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var MetaWear = require('./index.js');
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var cbindings = require('./MetaWear-SDK-Cpp/bindings/javascript/cbindings.js');
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var ref = require('ref');
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MetaWear.discoverByAddress('c8:4b:aa:97:50:05', function(device) {
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console.log('Discovered');
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device.connectAndSetUp(async function (error) {
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console.log('Connected');
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// Get pressure signal
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console.log('Get pressure');
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var baro = MetaWear.mbl_mw_baro_bosch_get_pressure_data_signal(device.board);
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// Create a comparator to only allow temps >= 15 to passthrough
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var promise = new Promise((resolve, reject) => {
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var comparator = MetaWear.mbl_mw_dataprocessor_comparator_create(baro, 5, 102190.0, ref.NULL, MetaWear.FnVoid_VoidP_DataProcessorP.toPointer(function onSignal(context, comparator) {1
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console.log('comparator created');
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resolve(comparator);
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}));
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});
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let comparator = await promise;
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// Subscribe to it
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console.log('Subscribe');
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MetaWear.mbl_mw_datasignal_subscribe(comparator, ref.NULL, MetaWear.FnVoid_VoidP_DataP.toPointer((context, pointer) => {
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console.log('got data');
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var data = pointer.deref();
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var value = data.parseValue();
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console.log('epoch: ' + data.epoch + ' pressure: ' + value);
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}));
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// Start timer
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console.log('Start');
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MetaWear.mbl_mw_baro_bosch_start(device.board);
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console.log('Press any key to exit');
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process.stdin.setRawMode(true);
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process.stdin.resume();
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process.stdin.on('data', () => {
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console.log('Disconnect');
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MetaWear.mbl_mw_debug_reset(device.board);
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process.exit(0);
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});
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});
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});
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‎examples/stream_switch_count.js

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var MetaWear = require('./index.js');
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var cbindings = require('./MetaWear-SDK-Cpp/bindings/javascript/cbindings.js');
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var ref = require('ref');
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MetaWear.discoverByAddress('c8:4b:aa:97:50:05', function(device) {
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console.log('Discovered');
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device.connectAndSetUp(async function (error) {
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console.log('Connected');
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// Get swithc signal
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console.log('Get switch');
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var switchs = MetaWear.mbl_mw_switch_get_state_data_signal(device.board);
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// Create a counter
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console.log('Create counter');
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let counter = await new Promise((resolve, reject) => {
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MetaWear.mbl_mw_dataprocessor_counter_create(switchs, ref.NULL, MetaWear.FnVoid_VoidP_DataProcessorP.toPointer((ctx, pointer) => {
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console.log('Counter Created');
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resolve(pointer);
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}))
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});
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console.log(counter);
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// Subscribe to it
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console.log('Subscribe');
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MetaWear.mbl_mw_datasignal_subscribe(counter, ref.NULL, MetaWear.FnVoid_VoidP_DataP.toPointer((ctx, pointer) => {
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console.log('got data');
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var data = pointer.deref();
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var value = data.parseValue();
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console.log('epoch: ' + data.epoch + ' counter: ' + value);
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}));
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// Create a timer
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console.log('Create timer');
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var promise = new Promise((resolve, reject) => {
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var timer = MetaWear.mbl_mw_timer_create_indefinite(device.board, 1000, 0, ref.NULL, MetaWear.FnVoid_VoidP_TimerP.toPointer(function onSignall(context, timer) {
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console.log('Timer created');
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resolve(timer);
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}));
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});
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let timer = await promise;
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// Create event based on timer and record as a command
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console.log('Record command');
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MetaWear.mbl_mw_event_record_commands(timer);
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console.log('Command to read temp signal');
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MetaWear.mbl_mw_datasignal_read(counter);
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console.log('End record command');
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promise = new Promise((resolve, reject) => {
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var rec = MetaWear.mbl_mw_event_end_record(timer, ref.NULL, MetaWear.FnVoid_VoidP_EventP_Int.toPointer(function onSignal(context, dataPtr, lstatus) {
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console.log('Command created');
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resolve(lstatus);
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}));
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});
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let rec = await promise;
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// Start timer
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console.log('Start');
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MetaWear.mbl_mw_timer_start(timer);
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console.log('Press any key to exit');
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process.stdin.setRawMode(true);
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process.stdin.resume();
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process.stdin.on('data', () => {
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console.log('Disconnect');
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MetaWear.mbl_mw_debug_reset(device.board);
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process.exit(0);
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});
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});
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});

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