QRcode_eSPI

qrcode_espi.cpp

#include <Arduino.h>
#include "qrencode.h"
#include "qrcode_espi.h"


QRcode_eSPI::QRcode_eSPI(TFT_eSPI *display) {
    this->display = display;
}


void QRcode_eSPI::init() {
    //display->init();
    this->screenwidth = display->width();
    this->screenheight = display->height();
    display->fillScreen(TFT_WHITE);
    int min = screenwidth;
    if (screenheight<screenwidth)
        min = screenheight;
    multiply = min/WD;
    offsetsX = (screenwidth-(WD*multiply))/2;
    offsetsY = (screenheight-(WD*multiply))/2;
}

void QRcode_eSPI::screenwhite() {
    display->fillScreen(TFT_WHITE);
}

void QRcode_eSPI::screenupdate() {
    // No hay que hacer nada
}

void QRcode_eSPI::drawPixel(int x, int y, int color) {
    if(color==1) {
        color = TFT_BLACK;
    } else {
        color = TFT_WHITE;
    }
    display->drawPixel(x,y,color);
    if (this->multiply>1) {
        display->drawPixel(x+1,y,color);
        display->drawPixel(x+1,y+1,color);
        display->drawPixel(x,y+1,color);
    }
}

qrcode_espi.h

#ifndef ESPQRST7735_H
#define ESPQRST7735_H
/* ESP_QRcode. tft version for ST7735
 * include this .h if you have a TFT display
 */

#define TFTDISPLAY

#include <TFT_eSPI.h>
#include <SPI.h>
#include "qrcode.h"

class QRcode_eSPI : public QRcodeDisplay
{
	private:
		TFT_eSPI *display;
        void drawPixel(int x, int y, int color);
	public:
		
		QRcode_eSPI(TFT_eSPI *display);

		void init();
		void screenwhite();
		void screenupdate();
};
#endif