LVGL — Light and Versatile Graphics Library

#include <stdio.h>
#include "pico/stdlib.h"
#include "hardware/spi.h"
#include "hardware/i2c.h"
#include "hardware/dma.h"
#include "hardware/pio.h"
#include "hardware/gpio.h"
#include "ili9341.h"
#include "xpt2046.h"
#include "lvgl.h"


static lv_draw_buf_t *buf1;
static lv_draw_buf_t *buf2;
static lv_obj_t *screen;

void lv_example_event_click(void);
static void event_cb(lv_event_t * e);

// stav LED diody GP25
bool led_stav = false;

int main()
{
    stdio_init_all();
    gpio_init(25);
    gpio_set_dir(25, GPIO_OUT);
    gpio_put(25,led_stav);

    ili9341_Init(LCD_INV_PORTRAIT);
    xpt2046_Init(TP_INV_PORTRAIT);

    lv_init();
    // nastavení displeje
    lv_display_t *disp = lv_display_create(240, 320);
    lv_display_set_flush_cb(disp, lcd_Flash_CB);
    buf1 = lv_draw_buf_create(240, 32, LV_COLOR_FORMAT_RGB565, LV_STRIDE_AUTO);
    buf2 = lv_draw_buf_create(240, 32, LV_COLOR_FORMAT_RGB565, LV_STRIDE_AUTO);
    lv_display_set_draw_buffers(disp, buf1, buf2);
    // lv_display_set_buffers(disp, buf1, buf2, sizeof(buf1), LV_DISPLAY_RENDER_MODE_PARTIAL);
    lv_display_set_render_mode(disp, LV_DISPLAY_RENDER_MODE_PARTIAL);
    screen = lv_obj_create(NULL);

    // vstupní zařízení - dotyková obrazovka
    lv_indev_t *indev = lv_indev_create();
    lv_indev_set_type(indev, LV_INDEV_TYPE_POINTER);
    lv_indev_set_read_cb(indev, xpt2046_read_cb);
    lv_screen_load(screen);
    lv_example_event_click();

    while (1)
    {
        sleep_ms(5);
        lv_timer_handler();
        lv_tick_inc(5);
    }
}


// obsluha událostí na tlačítku
static void event_cb(lv_event_t * e)
{
    LV_LOG_USER("Clicked");

    static uint32_t cnt = 1;
    lv_obj_t * btn = lv_event_get_target_obj(e);
    lv_obj_t * label = lv_obj_get_child(btn, 0);
    if(led_stav == false) {
        gpio_put(25,true);
        led_stav = true;
        lv_label_set_text_fmt(label, "Vypnout %" LV_PRIu32, cnt);
    } else {
        gpio_put(25,false);
        led_stav = false;
        lv_label_set_text_fmt(label, "Zapnout %" LV_PRIu32, cnt);
    }

    cnt++;
}

/**
 * Tlačítko s reakcí na stisknutí
 */
void lv_example_event_click(void)
{
    // Změna pozadí obrazovky
    lv_obj_set_style_bg_color(lv_screen_active(), lv_color_hex(0x003a57), LV_PART_MAIN);

    // vytvoření tlačítka
    lv_obj_t * btn = lv_button_create(lv_screen_active());
    lv_obj_set_size(btn, 100, 50);
    lv_obj_center(btn);
    // události na tlačítku bude obsluhovat funkce `event_cb`
    lv_obj_add_event_cb(btn, event_cb, LV_EVENT_CLICKED, NULL);

    // nastavení popisky tlačítka
    lv_obj_t * label = lv_label_create(btn);
    lv_label_set_text(label, "Ovladani LED");
    lv_obj_center(label);
}

cmake_minimum_required(VERSION 3.13)

set(CMAKE_C_STANDARD 11)
set(CMAKE_CXX_STANDARD 17)

set(PICO_DEOPTIMIZED_DEBUG=1)

# Initialise pico_sdk from installed location
# (note this can come from environment, CMake cache etc)
set(PICO_SDK_PATH $ENV{PICO_SDK_PATH})

set(PICO_BOARD pico CACHE STRING "Board type")

# Pull in Raspberry Pi Pico SDK (must be before project)
include($ENV{PICO_SDK_PATH}/external/pico_sdk_import.cmake)

if (PICO_SDK_VERSION_STRING VERSION_LESS "1.4.0")
  message(FATAL_ERROR "Raspberry Pi Pico SDK version 1.4.0 (or later) required. Your version is ${PICO_SDK_VERSION_STRING}")
endif()

project(lcdTest C CXX ASM)

# Initialise the Raspberry Pi Pico SDK
pico_sdk_init()

# Add executable. Default name is the project name, version 0.1

add_executable(
  lcdTest
  lcdTest.cpp
  ili9341.h
  ili9341.c
  xpt2046.h
  xpt2046.c
  pio_spi.c
)


pico_set_program_name(lcdTest "lcdTest")
pico_set_program_version(lcdTest "0.1")

pico_enable_stdio_uart(lcdTest 0)
pico_enable_stdio_usb(lcdTest 1)

pico_generate_pio_header(lcdTest ${CMAKE_CURRENT_LIST_DIR}/spi.pio)

# Add the standard library to the build
target_link_libraries(lcdTest
        pico_stdlib)

# Add the standard include files to the build
target_include_directories(lcdTest PRIVATE
  ${CMAKE_CURRENT_LIST_DIR}
  ${CMAKE_CURRENT_LIST_DIR}/.. # for our common lwipopts or any other standard includes, if required
)

# Add any user requested libraries
target_link_libraries(
        lcdTest
        hardware_gpio
        hardware_spi
        hardware_i2c
        hardware_dma
        hardware_pio
        hardware_pwm
	    lvgl
        )

pico_add_extra_outputs(lcdTest)

set(LV_CONF_BUILD_DISABLE_THORVG_INTERNAL 1)
set(LV_CONF_BUILD_DISABLE_EXAMPLES 1)
set(LV_CONF_BUILD_DISABLE_DEMOS 1)
add_subdirectory(lvgl)

#define LCD_MISO 12
#define LCD_CS 9
#define LCD_SCK 10
#define LCD_MOSI 11
#define LCD_RESET 15
#define LCD_DC 8
#define LCD_LED 13

#define XPT2046_CS 16
#define XPT2046_CLK 17
#define XPT2046_MOSI 18
#define XPT2046_MISO 19

ffmpeg -i VID_20250707_070005.mp4 -vf "transpose=2" -acodec copy ili9341_grafika1.mp4