koi_printer_connection

The connection layer for the koi_printer ecosystem.

Features

This package acts as an abstraction layer for various printer hardware connections. It shields the upper business layers from the complexities of managing physical connections, MTU chunking, and auto-reconnection logic.

Supported Adapters:

• KoiBleAdapter: Bluetooth Low Energy (BLE) using flutter_blue_plus.
• KoiClassicBtAdapter: Classic Bluetooth (SPP) using flutter_bluetooth_serial.
• KoiNetworkAdapter: TCP/IP Network printing via raw Dart Sockets.

Supported Scanners:

• KoiKeyboardScanner: Global hardware keyboard interceptor for physical POS Barcode/QR scanners.
• KoiBleScanner / KoiClassicBtScanner / KoiNetworkScanner: Discover nearby printers.

Usage

This package is intended to be used with koi_printer. You do not need to construct adapters manually unless you are building a custom implementation.

final adapter = KoiBleAdapter();
await adapter.connect(KoiConnectionConfig(deviceId: '00:11:22:33:44:55'));
await adapter.sendChunks([[0x1B, 0x40]]); // ESC @ (Initialize printer)