We are developing a prototype. We use an Atmel 8-bit AVR microcontroler Atmega2560.
Goal is to generate a QR Code of an arbitrary alphanumeric text of about 500-1000 characters. And this QR Code should be provided as an image in ESC/POS printing sequence (Printing command ESC * m nL nH d1...dk).
So the result would be a byte array which holds that ESC/POS command.