Getting Started

Copy a setup prompt with the install steps and the full markdown guide for this plugin.

        Set up this Capacitor plugin in the project.

Use the package manager already used by the project.
Install these package(s): `@capgo/capacitor-bluetooth-low-energy`
Run the required Capacitor sync/update step after installation.
Read this markdown guide for the full setup steps: https://raw.githubusercontent.com/Cap-go/website/refs/heads/main/apps/docs/src/content/docs/docs/plugins/bluetooth-low-energy/getting-started.mdx
Use that guide for platform-specific steps, native file edits, permissions, config changes, imports, and usage setup.
If that guide references other docs pages, read them too.

Install

bun add @capgo/capacitor-bluetooth-low-energy
bunx cap sync

Import

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

API Overview

`initialize`

Initialize the BLE plugin. Must be called before any other method.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.initialize({ mode: 'central' });

`shimWebBluetooth`

Install the Capacitor Web Bluetooth shim on navigator.bluetooth. Call this manually before using the Web Bluetooth API from a Capacitor native app.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

BluetoothLowEnergy.shimWebBluetooth();

`isAvailable`

Check if Bluetooth is available on the device.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

const { available } = await BluetoothLowEnergy.isAvailable();

`isEnabled`

Check if Bluetooth is enabled on the device.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

const { enabled } = await BluetoothLowEnergy.isEnabled();

`isLocationEnabled`

Check if location services are enabled (Android only).

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

const { enabled } = await BluetoothLowEnergy.isLocationEnabled();

`openAppSettings`

Open the app settings page.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.openAppSettings();

`openBluetoothSettings`

Open the Bluetooth settings page (Android only).

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.openBluetoothSettings();

`openLocationSettings`

Open the location settings page (Android only).

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.openLocationSettings();

`checkPermissions`

Check the current permission status.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

const { bluetooth, location } = await BluetoothLowEnergy.checkPermissions();

`requestPermissions`

Request Bluetooth permissions.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

const { bluetooth, location } = await BluetoothLowEnergy.requestPermissions();

`startScan`

Start scanning for BLE devices.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.startScan({
  services: ['180D'], // Heart Rate Service
  timeout: 10000
});

`stopScan`

Stop scanning for BLE devices.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.stopScan();

`connect`

Connect to a BLE device.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.connect({ deviceId: 'AA:BB:CC:DD:EE:FF' });

`disconnect`

Disconnect from a BLE device.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.disconnect({ deviceId: 'AA:BB:CC:DD:EE:FF' });

`createBond`

Create a bond with a BLE device (Android only).

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.createBond({ deviceId: 'AA:BB:CC:DD:EE:FF' });

`isBonded`

Check if a device is bonded (Android only).

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

const { bonded } = await BluetoothLowEnergy.isBonded({ deviceId: 'AA:BB:CC:DD:EE:FF' });

`discoverServices`

Discover services on a connected device.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.discoverServices({ deviceId: 'AA:BB:CC:DD:EE:FF' });

`getServices`

Get discovered services for a device.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

const { services } = await BluetoothLowEnergy.getServices({ deviceId: 'AA:BB:CC:DD:EE:FF' });

`getConnectedDevices`

Get a list of connected devices.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

const { devices } = await BluetoothLowEnergy.getConnectedDevices();

`readCharacteristic`

Read a characteristic value.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

const { value } = await BluetoothLowEnergy.readCharacteristic({
  deviceId: 'AA:BB:CC:DD:EE:FF',
  service: '180D',
  characteristic: '2A37'
});

`writeCharacteristic`

Write a value to a characteristic.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.writeCharacteristic({
  deviceId: 'AA:BB:CC:DD:EE:FF',
  service: '180D',
  characteristic: '2A39',
  value: [0x01]
});

`startCharacteristicNotifications`

Start notifications for a characteristic.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.startCharacteristicNotifications({
  deviceId: 'AA:BB:CC:DD:EE:FF',
  service: '180D',
  characteristic: '2A37'
});

`stopCharacteristicNotifications`

Stop notifications for a characteristic.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.stopCharacteristicNotifications({
  deviceId: 'AA:BB:CC:DD:EE:FF',
  service: '180D',
  characteristic: '2A37'
});

`readDescriptor`

Read a descriptor value.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

const { value } = await BluetoothLowEnergy.readDescriptor({
  deviceId: 'AA:BB:CC:DD:EE:FF',
  service: '180D',
  characteristic: '2A37',
  descriptor: '2902'
});

`writeDescriptor`

Write a value to a descriptor.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.writeDescriptor({
  deviceId: 'AA:BB:CC:DD:EE:FF',
  service: '180D',
  characteristic: '2A37',
  descriptor: '2902',
  value: [0x01, 0x00]
});

`readRssi`

Read the RSSI (signal strength) of a connected device.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

const { rssi } = await BluetoothLowEnergy.readRssi({ deviceId: 'AA:BB:CC:DD:EE:FF' });

`requestMtu`

Request MTU size change (Android only).

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

const { mtu } = await BluetoothLowEnergy.requestMtu({
  deviceId: 'AA:BB:CC:DD:EE:FF',
  mtu: 512
});

`requestConnectionPriority`

Request connection priority (Android only).

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.requestConnectionPriority({
  deviceId: 'AA:BB:CC:DD:EE:FF',
  priority: 'high'
});

`startAdvertising`

Start advertising as a peripheral (BLE server).

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.startAdvertising({
  name: 'MyDevice',
  services: ['180D']
});

`stopAdvertising`

Stop advertising.

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.stopAdvertising();

`startForegroundService`

Start a foreground service to maintain BLE connections in background (Android only).

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.startForegroundService({
  title: 'BLE Connection',
  body: 'Maintaining connection...'
});

`stopForegroundService`

Stop the foreground service (Android only).

import { BluetoothLowEnergy } from '@capgo/capacitor-bluetooth-low-energy';

await BluetoothLowEnergy.stopForegroundService();

Type Reference

`InitializeOptions`

Initialization options for the plugin.

export interface InitializeOptions {
  /**
   * The mode to initialize the plugin in.
   * - 'central': Act as a BLE central (client)
   * - 'peripheral': Act as a BLE peripheral (server)
   *
   * @default 'central'
   * @since 1.0.0
   */
  mode?: 'central' | 'peripheral';
}

`IsAvailableResult`

Result of the isAvailable method.

export interface IsAvailableResult {
  /**
   * Whether Bluetooth is available on the device.
   *
   * @since 1.0.0
   */
  available: boolean;
}

`IsEnabledResult`

Result of the isEnabled method.

export interface IsEnabledResult {
  /**
   * Whether Bluetooth is enabled on the device.
   *
   * @since 1.0.0
   */
  enabled: boolean;
}

`IsLocationEnabledResult`

Result of the isLocationEnabled method.

export interface IsLocationEnabledResult {
  /**
   * Whether location services are enabled on the device.
   *
   * @since 1.0.0
   */
  enabled: boolean;
}

`PermissionStatus`

Permission status for Bluetooth and location.

export interface PermissionStatus {
  /**
   * Bluetooth permission status.
   *
   * @since 1.0.0
   */
  bluetooth: PermissionState;

  /**
   * Location permission status (Android only).
   *
   * @since 1.0.0
   */
  location: PermissionState;
}

`StartScanOptions`

Options for starting a scan.

export interface StartScanOptions {
  /**
   * List of service UUIDs to filter by.
   * Only devices advertising these services will be returned.
   *
   * @since 1.0.0
   */
  services?: string[];

  /**
   * Scan timeout in milliseconds.
   * Set to 0 for no timeout.
   *
   * @default 0
   * @since 1.0.0
   */
  timeout?: number;

  /**
   * Whether to allow duplicate scan results.
   *
   * @default false
   * @since 1.0.0
   */
  allowDuplicates?: boolean;
}

`ConnectOptions`

Options for connecting to a device.

export interface ConnectOptions {
  /**
   * The device ID (MAC address on Android, UUID on iOS).
   *
   * @since 1.0.0
   */
  deviceId: string;

  /**
   * Whether to automatically connect when the device becomes available.
   *
   * @default false
   * @since 1.0.0
   */
  autoConnect?: boolean;
}

`DisconnectOptions`

Options for disconnecting from a device.

export interface DisconnectOptions {
  /**
   * The device ID to disconnect from.
   *
   * @since 1.0.0
   */
  deviceId: string;
}

`CreateBondOptions`

Options for creating a bond.

export interface CreateBondOptions {
  /**
   * The device ID to bond with.
   *
   * @since 1.0.0
   */
  deviceId: string;
}

`IsBondedOptions`

Options for checking bond status.

export interface IsBondedOptions {
  /**
   * The device ID to check.
   *
   * @since 1.0.0
   */
  deviceId: string;
}

`IsBondedResult`

Result of the isBonded method.

export interface IsBondedResult {
  /**
   * Whether the device is bonded.
   *
   * @since 1.0.0
   */
  bonded: boolean;
}

`DiscoverServicesOptions`

Options for discovering services.

export interface DiscoverServicesOptions {
  /**
   * The device ID to discover services on.
   *
   * @since 1.0.0
   */
  deviceId: string;
}

Source Of Truth

This page is generated from the plugin’s src/definitions.ts. Re-run the sync when the public API changes upstream.

Keep going from Getting Started

If you are using Getting Started to plan dashboard and API operations, connect it with Using @capgo/capacitor-bluetooth-low-energy for the native capability in Using @capgo/capacitor-bluetooth-low-energy, API Overview for the implementation detail in API Overview, Introduction for the implementation detail in Introduction, API Keys for the implementation detail in API Keys, and Devices for the implementation detail in Devices.