Introduction

@cutos/device-receipt-printer is a JavaScript library that provides a unified interface for accessing and controlling printers that support the Receipt command set. Developers can use this interface to send and receive data, configure printer parameters, and handle printer events.

Installation

npm install @cutos/core

npm install @cutos/device-receipt-printer

Import dependencies

import {CoreAPI} from '@cutos/core';
import {DeviceReceiptPrinter} from '@cutos/device-Receipt-printer';

DeviceReceiptPrinter

Constructor, create receipt printer device instance

let devReceiptPrinter = new DeviceReceiptPrinter(name);

• name: Receipt printer device name

Example:

devReceiptPrinter = new DeviceReceiptPrinter('device-receipt-printer');

DeviceReceiptPrinter.init

Receipt Printer device initialization

devReceiptPrinter.init(callback);

• callback: Callback function

Example:

devReceiptPrinter.init((result, error) => {
	if (!error) {
		console.log('onDeviceCreate', result)
	} else {
		console.log(error)
	}
});

• Return response example:

"Driver device-receipt-printer loaded"

DeviceReceiptPrinter.connect

Connect Receipt Printer

devReceiptPrinter.connect(path, callback);

• path: Device port
• callback: Callback function

Example:

 devReceiptPrinter.connect('/ttyS1', (response) => {
	console.log(response)
})

• Return response example:

{
  "status": true,
  "msg": "already connected"
}

DeviceReceiptPrinter.print

Print Text

devReceiptPrinter.print(text, callback);

• text: Print text
• callback: Callback function

Example：

 devReceiptPrinter.print('test result', (response) => {
	console.log(response)
})

• Return response example:

{
  "status": true,
  "msg": "print success"
}

DeviceReceiptPrinter.printQrcode

Print Qrcode

devReceiptPrinter.printQrcode(text, callback);

• text: Text for Qrcode
• callback: Callback function

Example：

 devReceiptPrinter.printQrcode('hello cutos', (response) => {
	console.log(response)
})

• Return response example:

{
  "status": true,
  "msg": "print qrcode success"
}

DeviceReceiptPrinter.setAlign

Alignment setting.

 setAlign(align, callback)

• align: Alignment setting，Valid values: 'left', 'center', 'right'
• callback: Callback function

Example：

devReceiptPrinter.setAlign('left', (response) => {
	console.log(response)
})

• Return response example:

{
  "status": true,
  "msg":"set align success"
}

DeviceReceiptPrinter.setFontSize

Print font size setting

devReceiptPrinter.setFontSize(width, height, callback)

• width:Font width（1-7）
• height:Font height（1-7）
• callback:Callback function

Example：

devReceiptPrinter.setFontSize(2, 2, (response) => {
	console.log(response)
})

• Return response example:

{
  "status": true,
  "msg":"set fontSize success"
}

DeviceReceiptPrinter.feed

Print blank line

devReceiptPrinter.feed(lines, callback)

• lines:Blank line count，Blank lines have the same height as text lines（1-255）.
• callback:Callback function

Example:

devReceiptPrinter.feed(1, (response) => {
	console.log(response)
})

• Return response example:

{
  "status": true,
  "msg":"feed success"
}