Is there any way to send data through a USB connection with Processing?

anthony20

Hello, good afternoon:

I have a problem with a thermal printer drivers, samsung BIXOLON SPR 350 II.

The main problem is that the printer is recognized as usb port. I would turn that USB port to COM to use the processing.serial library. But I've tried to change and is not possible.

Is there a way to send a string of data through the USB port using processing?

Other solutions I have tried without success and who may be possible: -Mandar From app to windows, a print order, a .txt document. Maybe send a sequence of commands with MS-2 file path.

Print document from java, I tried several stackoverflow codes but give me error.

thanks

anthony20

Bueno, finalmente he conseguido hacer funcionar un código de java en processing y con unos retoques tengo funcionando la impresora, dejo el código retocado por si puede servirle a alguien:

import javax.print.*;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
PrintWriter output;

 void setup(){
for(int i = 0; i < 6; i++){ datos_imprimir(ENTER +Integer.toString(i)+"IMPRIMIENDO"+OK+"?"+ENTER+"VAMOS!"+ENTER);}
 }

void datos_imprimir(String datos)
{
  output = createWriter("C:/SIACER/D.txt");
  output.println(datos);
  output.flush();
   try{imprimir_documento("C:/SIACER/D.txt");}catch(Exception e){}
}



void imprimir_documento(String direccion) throws IOException {

        FileInputStream inputStream = null;
        try {
            inputStream = new FileInputStream(direccion);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        if (inputStream == null) {
            return;
        }

        DocFlavor docFormat = DocFlavor.INPUT_STREAM.AUTOSENSE;
        Doc document = new SimpleDoc(inputStream, docFormat, null);

        PrintRequestAttributeSet attributeSet = new HashPrintRequestAttributeSet();

        PrintService defaultPrintService = PrintServiceLookup.lookupDefaultPrintService();


        if (defaultPrintService != null) {
            DocPrintJob printJob = defaultPrintService.createPrintJob();
            try {
                printJob.print(document, attributeSet);

            } catch (Exception e) {
                e.printStackTrace();
            }
        } else {
            System.err.println("No existen impresoras instaladas");
        }

        inputStream.close();
    }

_vk

Thanks for sharing @anthony20 (Gracias por compartir)

Free translation from above post:

Well, finally I got a Java code, that, with some tweaks, is working to print trough Processing. Below the tweaked code in case someone needs it.