Package Exports

simble

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Readme

simble

A node.js module for simple access to ble (Bluetooth Low Energy = Bluetooth 4.x) devices.

simble tries to provide a Web Bluetooth API-like interface to sandeepmistry's great noble package. Additionally, simble introduces a few useful helper functions for common tasks, meant to further simplify and shorten the code required to access Bluetooth 4.x-devices.

Usage

Here's a short example of using simble. The following code will try to connect to any nearby Bluetooth LE device offering the GATT service with assigned number 0x180D ("Heart Rate"), and then request access to the GATT characteristic with assigned number 0x2A37 ("Heart Rate Measurement"). This GATT characteristic will then be subscribed to, by passing a callback function that will be called whenever there is new heart rate measurement data available. That callback function simply prints the current heart rate (stored in the second byte of the characteristic's data) to the console.

bluetooth = require('simble');

bluetooth.requestCharacteristic(0x2A37, 0x180D)
.then(characteristic => {
    characteristic.subscribe(event => {
        console.log('Heart Rate: ' + event.target.value[1]);
    });
});