node-escpos

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I have the following code

const escpos = require('escpos');
escpos.USB = require('escpos-usb');
const device  = new escpos.USB(2727, 772);
const options = { encoding: "ISO8859-15" /* default */ }
const printer = new escpos.Printer(device, options);
device.open(function(error){
  console.log("internal call")
  printer
  .text("Test123 This is a happy printer doing it's job twice. Too happy?")
  .close()
});

when I run the code with $node index.js

the thermal printer will print the text twice. I have also tried to add the cut() flush() method within the open callback method. I can see that this callback method is called two times, as in the console it prints "internal call" twice.

Expected: the printer only prints the text once.

Thanks for the help

Hey there, found a solution for the problem? Noticing the same behavior on a TH230.

Kind of. Within the function that is define I the device.open() I checked for a flag which toggles each time the function is executed. So I it's some ugly workaround but at least until now it works just fine.

So in m previous example, after the line console.log("internal call") I added the following:

if(toggleSwitch){ printer .text(... } toggleSwitch = !toggleSwitch