ionic-ledger-hw-transport-ble

Ledger Hardware Wallet Bluetooth BLE transport for Ionic.

yarn add @oasisprotocol/ionic-ledger-hw-transport-ble

Pre-requisite

• Install and link library @capacitor-community/bluetooth-le + configure your app for Bluetooth permissions (Open the link for documentation)
• global.Buffer available. Typically global.Buffer = require("buffer").Buffer; that can be placed in a polyfill.js and imported with import "./polyfill"; at first line of the main JavaScript entry file.

Minimal getting started

@oasisprotocol/ionic-ledger-hw-transport-ble works like any of @ledgerhq/hw-transport libraries.

The difference here is that the list() is costy and you likely don't want to always scan for devices, you would better save a selected device as "known" to suggest it to user later.

Important: you will also have to deal with specifics of Bluetooth BLE, for instance, you need to request the LOCATION permission on Android!

Here is a gist of the most important parts required.

Check for Bluetooth state

import BleTransport from "@oasisprotocol/ionic-ledger-hw-transport-ble";

// Check if @capacitor-community/bluetooth-le is setup
BleTransport.isSupported()

// Check for bluetooth status
BleTransport.isEnabled()

Scan for devices

const scannedDevices = BleTransport.list()

Connect to device

const [scannedDevice] = scannedDevices
const transport = await BleTransport.open(scannedDevice)

and now we can just use the transport like any other Ledger transport!