quick_usb

quick_usb

A cross-platform (Android/Windows/macOS/Linux) USB plugin for Flutter

Usage

• List devices
• List devices with additional description
• Get device description
• Check permission
• Request permission
• Open/Close device
• Get/Set configuration
• Claim/Release interface
• Bulk transfer in/out
• Set auto detach kernel driver

List devices

await QuickUsb.init();
// ...
var deviceList = await QuickUsb.getDeviceList();
// ...
await QuickUsb.exit();

List devices with additional description

Returns devices list with manufacturer, product and serial number description.

Any of these attributes can be null.

var descriptions = await QuickUsb.getDevicesWithDescription();
var deviceList = descriptions.map((e) => e.device).toList();
print('descriptions $descriptions');

(Android Only) Android requires permission for each device in order to get the serial number. The user will be asked for permission for each device if needed. If you do not require the serial number, you can avoid requesting permission using:

var descriptions = await QuickUsb.getDevicesWithDescription(requestPermission: false);

Get device description

Returns manufacturer, product and serial number description for specified device.

Any of these attributes can be null.

 var description = await QuickUsb.getDeviceDescription(device);
 print('description ${description.toMap()}');

(Android Only) Android requires permission for each device in order to get the serial number. The user will be asked for permission for each device if needed. If you do not require the serial number, you can avoid requesting permission using:

var description = await QuickUsb.getDeviceDescription(requestPermission: false);

Check permission

Android Only

var hasPermission = await QuickUsb.hasPermission(device);
print('hasPermission $hasPermission');

Request permission

Android Only

Request permission for a device. The permission dialog is not shown if the app already has permission to access the device.

var hasPermission = await QuickUsb.requestPermission(device);
print('hasPermission $hasPermission');

Open/Close device

var openDevice = await QuickUsb.openDevice(device);
print('openDevice $openDevice');
// ...
await QuickUsb.closeDevice();

Get/Set configuration

var configuration = await QuickUsb.getConfiguration(index);
print('getConfiguration $configuration');
// ...
var setConfiguration = await QuickUsb.setConfiguration(configuration);
print('setConfiguration $getConfiguration');

Claim/Release interface

var claimInterface = await QuickUsb.claimInterface(interface);
print('claimInterface $claimInterface');
// ...
var releaseInterface = await QuickUsb.releaseInterface(interface);
print('releaseInterface $releaseInterface');

Bulk transfer in/out

var bulkTransferIn = await QuickUsb.bulkTransferIn(endpoint, 1024, timeout: 2000);
print('bulkTransferIn ${hex.encode(bulkTransferIn)}');
// ...
var bulkTransferOut = await QuickUsb.bulkTransferOut(endpoint, data, timeout: 2000);
print('bulkTransferOut $bulkTransferOut');

Set auto detach kernel driver

Enable/disable libusb's automatic kernel driver detachment on linux. When this is enabled libusb will automatically detach the kernel driver on an interface when claiming the interface, and attach it when releasing the interface.

Automatic kernel driver detachment is disabled on newly opened device handles by default.

This is supported only on linux, on other platforms this function does nothing.

await QuickUsb.setAutoDetachKernelDriver(true);