arduino_barcode128

Generates a String representation of a Barcode (code 128)

Example of use

#include <Barcode.h>
Barcode barcode;
// (...)
void drawBarcode(String text)
{
//Call barcode.make with desired string to codify
  String bars = barcode.make(text);
  // Input -> 11648
  // Output -> "211412123221123221223112221231311222132212233111"
  // Each number is a bar length, alternating Black / White
  //Goes through retrieved string, drawing the bars
  for (int i = 0; i < bars.length(); i++){
      int barLen = bars[i] - '0';
      int startBar = posBar;
      posBar+= barLen;
      if (i%2 == 0) {
        display.fillRect(0, startBar, 45, posBar, GxEPD_BLACK);      
      } else {
        display.fillRect(0, startBar, 45, posBar, GxEPD_WHITE);
      }          
  }
  display.updateWindow(0, 0, 45, display.height(), false)
}