I am learning to make QRCode in esp32-2432s028 - c++

Question

I am learning to make QRCode in esp32-2432s028 (this pictura) from https://www.youtube.com/watch?v=Ss3zBO-V9kI I have problem.
From code
/*
QR Code Maker (ESP32+LVGL8)
For More Information: https://youtu.be/Ss3zBO-V9kI
Created by Eric N. (ThatProject)
*/
/////////////////////////////////////////////////////////////////
#include <lvgl.h>
#include "MyDisplay.h"
static const uint32_t screenWidth = 320;
static const uint32_t screenHeight = 480;
static lv_disp_draw_buf_t draw_buf;
static lv_color_t buf[ screenWidth * 10 ];
lv_obj_t * mainScreen;
lv_obj_t * titleImage;
lv_obj_t * qrCode;
LV_IMG_DECLARE(ui_logo_img_obj);
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
{
uint32_t w = ( area->x2 - area->x1 + 1 );
uint32_t h = ( area->y2 - area->y1 + 1 );
tft.startWrite();
tft.setAddrWindow( area->x1, area->y1, w, h );
tft.writePixels((lgfx::rgb565_t *)&color_p->full, w * h);
tft.endWrite();
lv_disp_flush_ready( disp );
}
void my_touchpad_read( lv_indev_drv_t * indev_driver, lv_indev_data_t * data )
{
if (ts.touched()) {
data->state = LV_INDEV_STATE_PR;
TS_Point p = ts.getPoint();
data->point.x = p.x;
data->point.y = p.y;
} else {
data->state = LV_INDEV_STATE_REL;
}
}
void setup()
{
Serial.begin(115200);
tft.begin();
tft.setRotation(0);
tft.setBrightness(255);
if (!ts.begin(40, SDA_FT6236, SCL_FT6236)) {
Serial.println("Unable to start the capacitive touch Screen.");
}
lv_init();
lv_disp_draw_buf_init( &draw_buf, buf, NULL, screenWidth * 10 );
static lv_disp_drv_t disp_drv;
lv_disp_drv_init(&disp_drv);
disp_drv.hor_res = screenWidth;
disp_drv.ver_res = screenHeight;
disp_drv.flush_cb = my_disp_flush;
disp_drv.draw_buf = &draw_buf;
lv_disp_drv_register(&disp_drv);
static lv_indev_drv_t indev_drv;
lv_indev_drv_init(&indev_drv);
indev_drv.type = LV_INDEV_TYPE_POINTER;
indev_drv.read_cb = my_touchpad_read;
lv_indev_drv_register(&indev_drv);
ui_init();
}
void loop() {
lv_timer_handler();
delay( 5 );
}
void ui_init() {
ui_background();
ui_dynamic_obj();
lv_disp_load_scr(mainScreen);
}
void ui_background() {
mainScreen = lv_obj_create(NULL);
lv_obj_clear_flag(mainScreen, LV_OBJ_FLAG_SCROLLABLE);
titleImage = lv_img_create(mainScreen);
lv_img_set_src(titleImage, &ui_logo_img_obj);
lv_obj_set_size(titleImage, 320, 117);
lv_obj_set_pos(titleImage, 0, 0);
lv_obj_set_align(titleImage, LV_ALIGN_TOP_MID);
lv_obj_add_flag(titleImage, LV_OBJ_FLAG_ADV_HITTEST);
lv_obj_clear_flag(titleImage, LV_OBJ_FLAG_SCROLLABLE);
lv_obj_t * titleLabel = lv_label_create(mainScreen);
lv_obj_set_pos(titleLabel, 0, 120);
lv_obj_set_align(titleLabel, LV_ALIGN_TOP_MID);
lv_label_set_text(titleLabel, "QR Code Maker");
lv_obj_clear_flag(titleLabel, LV_OBJ_FLAG_CLICKABLE);
lv_obj_set_style_text_font(titleLabel, &lv_font_montserrat_34, LV_PART_MAIN | LV_STATE_DEFAULT);
}
static void ta_event_cb(lv_event_t * e) {
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t * ta = lv_event_get_target(e);
lv_obj_t * kb = (lv_obj_t*)lv_event_get_user_data(e);
if (code == LV_EVENT_READY) {
lv_obj_add_flag(kb, LV_OBJ_FLAG_HIDDEN);
const char * text = lv_textarea_get_text(ta);
if (strlen(text) == 0) return;
lv_qrcode_update(qrCode, text, strlen(text));
lv_obj_clear_flag(qrCode, LV_OBJ_FLAG_HIDDEN);
}
if (code == LV_EVENT_CLICKED || code == LV_EVENT_FOCUSED) {
lv_keyboard_set_textarea(kb, ta);
lv_obj_clear_flag(kb, LV_OBJ_FLAG_HIDDEN);
lv_obj_add_flag(qrCode, LV_OBJ_FLAG_HIDDEN);
}
if (code == LV_EVENT_DEFOCUSED) {
lv_keyboard_set_textarea(kb, NULL);
lv_obj_add_flag(kb, LV_OBJ_FLAG_HIDDEN);
}
}
void ui_dynamic_obj(void) {
lv_obj_t * kb = lv_keyboard_create(mainScreen);
lv_obj_t * ta = lv_textarea_create(mainScreen);
lv_obj_align(ta, LV_ALIGN_CENTER, 0, -40);
lv_obj_add_event_cb(ta, ta_event_cb, LV_EVENT_ALL, kb);
lv_obj_set_size(ta, screenWidth - 40, 60);
lv_keyboard_set_textarea(kb, ta);
qrCode = lv_qrcode_create(mainScreen, 200, lv_color_hex3(0x000), lv_color_hex3(0xeef));
lv_obj_set_pos(qrCode, 0, -20);
lv_obj_set_align(qrCode, LV_ALIGN_BOTTOM_MID);
lv_obj_add_flag(qrCode, LV_OBJ_FLAG_HIDDEN);
}
I run in arduino ide 2.0.1
It shown error is:
C:\Users\Supakee\Documents\Arduino\QRCODE\QRCODE.ino: In function 'void ui_dynamic_obj()':
C:\Users\Supakee\Documents\Arduino\QRCODE\QRCODE.ino:141:88: error: too many arguments to function 'lv_obj_t* lv_qrcode_create(lv_obj_t*)'
qrCode = lv_qrcode_create(mainScreen, 200, lv_color_hex3(0x000), lv_color_hex3(0xeef));
^
In file included from c:\users\supakee\documents\arduino\libraries\lvgl-d17450a55fbd8603e57b64d23feb36a63832b195\lvgl.h:91,
from c:\Users\Supakee\Documents\Arduino\libraries\lvgl-d17450a55fbd8603e57b64d23feb36a63832b195\src/lvgl.h:17,
from C:\Users\Supakee\Documents\Arduino\QRCODE\QRCODE.ino:7:
c:\users\supakee\documents\arduino\libraries\lvgl-d17450a55fbd8603e57b64d23feb36a63832b195\src/libs/qrcode/lv_qrcode.h:45:12: note: declared here
lv_obj_t * lv_qrcode_create(lv_obj_t * parent);
^~~~~~~~~~~~~~~~
Multiple libraries were found for "lvgl.h"
Used: C:\Users\Supakee\Documents\Arduino\libraries\lvgl-d17450a55fbd8603e57b64d23feb36a63832b195
Not used: C:\Users\Supakee\Documents\Arduino\libraries\src
exit status 1
Compilation error: too many arguments to function 'lv_obj_t* lv_qrcode_create(lv_obj_t*)'
I tried to follow instruction in LVGL Document.
I want to make this esp32-2432s028 to display QR code so how can i do it?
I use library from https://github.com/lvgl/lvgl/tree/6948eee9b12e13ea7db9287b96385b05a8a6cc9a
I use code from https://github.com/0015/ThatProject/tree/master/ESP32_LVGL/LVGL8/4_QR_Code_Maker

Answer 1

The compilation error:
Compilation error: too many arguments to function 'lv_obj_t* lv_qrcode_create(lv_obj_t*)'
Suggests that you should only send a single argument to the function
qrCode = lv_qrcode_create(mainScreen, 200, lv_color_hex3(0x000), lv_color_hex3(0xeef));
Does the documentation you have read differ from the implementation you are using?