ESP32 TTGO QRCODE based access

QRCODE.C

#include <TFT_eSPI.h>

#include <SPI.h>

#include "qrcode.h"


TFT_eSPI tft = TFT_eSPI();       // Invoke custom library


void setup(void) {


 // Create the QR code

QRCode qrcode;

uint8_t qrcodeData[qrcode_getBufferSize(1)];

qrcode_initText(&qrcode, qrcodeData, 1, 0, "[192.168.1.12](https://192.168.1.12)");

  

  tft.init();

  tft.setRotation(1);

  int QRxBegin = 75;

  int QRyBegin = 23;

  int QRmoduleSize = 4;


  tft.fillScreen(TFT_WHITE);

  // Draw QR code

   for (uint8_t y = 0; y < qrcode.size; y++) {

// Each horizontal module

for (uint8_t x = 0; x < qrcode.size; x++) {

if(qrcode_getModule(&qrcode, x, y))tft.fillRect(QRxBegin+ x*QRmoduleSize, QRyBegin + y*QRmoduleSize, QRmoduleSize, QRmoduleSize, TFT_BLACK);

}   

}

}


void loop() {

Original source: https://www.reddit.com/r/esp32/comments/lvlhl1/qr_code_for_esp32_web_server/

Reddit