ESC/POS Printer driver for nodejs with code128 support
npm install hgn-escposOriginal repo: https://github.com/song940/node-escpos
Added support for CODE128 and it's different types A,B and C.
ESC/POS Printer driver for node
```
$ npm i escpos
if you use usb as an adapter :
+ On Linux, you'll need libudev to build libusb.sudo apt-get install build-essential libudev-dev
+ On Ubuntu/Debian: .
+ On Windows, Use Zadig to install the WinUSB driver for your USB device.
Otherwise you will get LIBUSB_ERROR_NOT_SUPPORTED when attempting to open devices.
``javascript
const escpos = require('escpos');
// Select the adapter based on your printer type
const device = new escpos.USB();
// const device = new escpos.Network('localhost');
// const device = new escpos.Serial('/dev/usb/lp0');
const printer = new escpos.Printer(device);
device.open(function(){
printer
.font('a')
.align('ct')
.style('bu')
.size(1, 1)
.text('The quick brown fox jumps over the lazy dog')
.text('敏捷的棕色狐狸跳过懒狗')
.barcode('12345678', 'EAN8')
.qrimage('https://github.com/song940/node-escpos', function(err){
this.cut();
this.close();
});
});
``
----USB Adapter methods
$3
Claims the current device USB, if the printer is already in use by other process this will fail.
By default, the USB adapter will set the first printer found, if you have multiple printers use setDevice and getDevices to switch between printers.
Triggers the callback function when done.
The ID of the printer will be the number you want to set from 0 to N-1.
.This must be called before printing if you want to swtich between multiple printers connected to the same device.
$3
Closes the current device and releases its USB interface.$3
Similar to close() but loops through all the devices connected and closes them all.----
Printer methods
Escpos inherits its methods to the printers. the following methods are defined:
$3
Prints raw text. Raises TextError exception.
$3
Carrier feed and tabs.
align is a string which takes any of the following values:
+ LF for Line Feed
+ FF for Form Feed
+ CR for Carriage Return
+ HT for Horizontal Tab
+ VT for Vertical Tab
$3
Set text properties.
align set horizontal position for text, the possible values are:
+ CENTER
+ LEFT
+ RIGHT
Default: left
font type could be A or B. Default: A
width is a numeric value, 1 is for regular size, and 2 is twice the standard size. Default: 1
height is a numeric value, 1 is for regular size and 2 is twice the standard size. Default: 1
$3
*type is only used for CODE128
Prints a barcode.code is an alphanumeric code to be printed as bar code
barcode_type must be one of the following type of codes:
+ UPC-A
+ UPC-E
+ EAN13
+ EAN8
+ CODE39
+ ITF
+ NW7
$3
Prints CODE128 Barcode, you have to specify the type as 'A', 'B' or 'C'.
C type only accepts numbers and an even length
+ CODE128
width is a numeric value in the range between (1,255) Default: 64
height is a numeric value in the range between (2,6) Default: 3
position is where to place the code around the bars, could be one of the following values:
+ ABOVE
+ BELOW
+ BOTH
+ OFF
Default: BELOW
font is one of the 2 type of fonts, values could be:
+ A
+ B
Default: A
Raises BarcodeTypeError, BarcodeSizeError, BarcodeCodeError exceptions.
$3
Cut paper.
mode set a full or partial cut. Default: full
Partial cut is not implemented in all printers.
$3
Sends a pulse to the cash drawer in the specified pin.
pin is a numeric value which defines the pin to be used to send the pulse, it could be 2 or 5.
Raises
CashDrawerError()``----
+ Part of code from @taoyuan
----
----
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---