Abrevva Capacitor Plugin

The EVVA Capacitor Plugin is a collection of tools to work with electronical EVVA access components. It allows for scanning and connecting via BLE.

• Features
• Requirements
• Installation
• Examples

Features

• BLE Scanner for EVVA components in range
• Localize EVVA components encountered by a scan
• Disengage EVVA components encountered by a scan
• Read / Write data via BLE

Requirements

• Capacitor >= 5.0.0
• Java 17+ (Android)
• Android SDK (Android)
• Android 10+ (API level 29) (Android)
• Xcode 15.4 (iOS)
• iOS 15.0+ (iOS)

Installation

Capacitor 6

npm install @evva/abrevva-capacitor
npx cap sync

Capacitor 5

npm install @evva/abrevva-capacitor@1.0.1
npx cap sync

Examples

Initialize and scan for EVVA components

import { AbrevvaBLEClient, ScanResult } from "@evva/abrevva-capacitor";

class ExampleClass {
  private results: ScanResult[];
  
  async startScan(event: any) {
    this.results = [];
    
    await AbrevvaBLEClient.requestLEScan({ timeout: 5_000 }, (result: ScanResult) => {
      this.results.push(result);
    });
  }
}

Localize EVVA component

With the signalize method you can localize EVVA components. On a successful signalization the component will emit a melody indicating its location.

const success = await AbrevvaBLEClient.signalize('deviceId');

Perform disengage on EVVA components

For the component disengage you have to provide access credentials to the EVVA component. Those are generally acquired in the form of access media metadata from the Xesar software.

const status = await AbrevvaBLEClient.disengage(
  'mobileId',
  'mobileDeviceKey',
  'mobileGroupId',
  'mobileAccessData',
  false,
);

API

• Interfaces
• Enums

Interfaces

AbrevvaBLEInterface

Method	Signature
initialize	(options?: InitializeOptions | undefined) => Promise<void>
isEnabled	() => Promise<BooleanResult>
isLocationEnabled	() => Promise<BooleanResult>
startEnabledNotifications	() => Promise<void>
stopEnabledNotifications	() => Promise<void>
openLocationSettings	() => Promise<void>
openBluetoothSettings	() => Promise<void>
openAppSettings	() => Promise<void>
requestLEScan	(options?: RequestBleDeviceOptions | undefined) => Promise<void>
stopLEScan	() => Promise<void>
addListener	(eventName: "onEnabledChanged", listenerFunc: (result: BooleanResult) => void) => PluginListenerHandle
addListener	(eventName: string, listenerFunc: (event: ReadResult) => void) => PluginListenerHandle
addListener	(eventName: "onScanResult", listenerFunc: (result: ScanResultInternal) => void) => PluginListenerHandle
connect	(options: DeviceIdOptions & TimeoutOptions) => Promise<void>
disconnect	(options: DeviceIdOptions) => Promise<void>
read	(options: ReadOptions & TimeoutOptions) => Promise<ReadResult>
write	(options: WriteOptions & TimeoutOptions) => Promise<void>
signalize	(options: SignalizeOptions) => Promise<void>
disengage	(options: DisengageOptions) => Promise<StringResult>
startNotifications	(options: ReadOptions) => Promise<void>
stopNotifications	(options: ReadOptions) => Promise<void>

InitializeOptions

Prop	Type
androidNeverForLocation	boolean

BooleanResult

Prop	Type
value	boolean

RequestBleDeviceOptions

Prop	Type
services	string[]
name	string
namePrefix	string
optionalServices	string[]
allowDuplicates	boolean
scanMode	ScanMode
timeout	number

PluginListenerHandle

Prop	Type
remove	() => Promise<void>

ReadResult

Prop	Type
value	string

ScanResultInternal

Prop	Type
device	BleDevice
localName	string
rssi	number
txPower	number
manufacturerData	{ [key: string]: T; }
serviceData	{ [key: string]: T; }
uuids	string[]
rawAdvertisement	T

BleDevice

Prop	Type
deviceId	string
name	string
uuids	string[]

DeviceIdOptions

Prop	Type
deviceId	string

TimeoutOptions

Prop	Type
timeout	number

ReadOptions

Prop	Type
deviceId	string
service	string
characteristic	string

WriteOptions

Prop	Type
deviceId	string
service	string
characteristic	string
value	string

SignalizeOptions

Prop	Type
deviceId	string

StringResult

Prop	Type
value	string

DisengageOptions

Prop	Type
deviceId	string
mobileId	string
mobileDeviceKey	string
mobileGroupId	string
mobileAccessData	string
isPermanentRelease	boolean

AbrevvaCryptoInterface

Method	Signature
encrypt	(options: { key: string; iv: string; adata: string; pt: string; tagLength: number; }) => Promise<{ cipherText: string; authTag: string; }>
encryptFile	(options: { sharedSecret: string; ptPath: string; ctPath: string; }) => Promise<void>
decrypt	(options: { key: string; iv: string; adata: string; ct: string; tagLength: number; }) => Promise<{ plainText: string; authOk: boolean; }>
decryptFile	(options: { sharedSecret: string; ctPath: string; ptPath: string; }) => Promise<void>
decryptFileFromURL	(options: { sharedSecret: string; url: string; ptPath: string; }) => Promise<void>
generateKeyPair	() => Promise<{ privateKey: string; publicKey: string; }>
computeSharedSecret	(options: { privateKey: string; peerPublicKey: string; }) => Promise<{ sharedSecret: string; }>
computeED25519PublicKey	(options: { privateKey: string; }) => Promise<{ publicKey: string; }>
sign	(options: { privateKey: string; data: string; }) => Promise<{ signature: string; }>
verify	(options: { publicKey: string; data: string; signature: string; }) => Promise<void>
random	(options: { numBytes: number; }) => Promise<{ value: string; }>
derive	(options: { key: string; salt: string; info: string; length: number; }) => Promise<{ value: string; }>

Enums

ScanMode

Members	Value
SCAN_MODE_LOW_POWER	0
SCAN_MODE_BALANCED	1
SCAN_MODE_LOW_LATENCY	2