gistfile1.txt

/*
 * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: CC0-1.0
 */

#include "waveshare_rgb_lcd_port.h"

void test_screen();

void app_main()
{
    waveshare_esp32_s3_rgb_lcd_init(); // Initialize the Waveshare ESP32-S3 RGB LCD 
    // wavesahre_rgb_lcd_bl_on();  //Turn on the screen backlight 
    // wavesahre_rgb_lcd_bl_off(); //Turn off the screen backlight 
    
    ESP_LOGI(TAG, "Display LVGL demos");
    // Lock the mutex due to the LVGL APIs are not thread-safe
    if (lvgl_port_lock(-1)) {
        // lv_demo_stress();
        // lv_demo_benchmark();
        // lv_demo_music();
        // lv_demo_widgets();
        // example_lvgl_demo_ui();
        test_screen();
        // Release the mutex
        lvgl_port_unlock();
    }
}

static lv_obj_t * meter;

static void set_value(void * indic, int32_t v)
{
    lv_meter_set_indicator_end_value(meter, indic, v);
}

void test_screen()
{
    static lv_style_t style;
    lv_style_init(&style);
    lv_style_set_flex_flow(&style, LV_FLEX_FLOW_ROW);
    lv_style_set_flex_main_place(&style, LV_FLEX_ALIGN_START);
    lv_style_set_layout(&style, LV_LAYOUT_FLEX);

    lv_obj_t * cont = lv_obj_create(lv_scr_act());
    lv_obj_set_size(cont, 800, 480);
    lv_obj_align(cont, LV_ALIGN_TOP_LEFT, 0, 0);
    lv_obj_add_style(cont, &style, 0);
    lv_obj_set_style_pad_all(cont, 40, 0);



    meter = lv_meter_create(cont);
    lv_obj_set_size(meter, 300, 300);

    /*Remove the circle from the middle*/
    lv_obj_remove_style(meter, NULL, LV_PART_INDICATOR);

    /*Add a scale first*/
    lv_meter_scale_t * scale = lv_meter_add_scale(meter);
    lv_meter_set_scale_ticks(meter, scale, 11, 2, 10, lv_palette_main(LV_PALETTE_GREY));
    lv_meter_set_scale_major_ticks(meter, scale, 1, 2, 30, lv_color_hex3(0xeee), 10);
    lv_meter_set_scale_range(meter, scale, 0, 100, 270, 90);

    /*Add a three arc indicator*/
    lv_meter_indicator_t * indic1 = lv_meter_add_arc(meter, scale, 10, lv_palette_main(LV_PALETTE_RED), 0);
    lv_meter_indicator_t * indic2 = lv_meter_add_arc(meter, scale, 10, lv_palette_main(LV_PALETTE_GREEN), -10);
    lv_meter_indicator_t * indic3 = lv_meter_add_arc(meter, scale, 10, lv_palette_main(LV_PALETTE_BLUE), -20);

    /*Create an animation to set the value*/
    lv_anim_t a;
    lv_anim_init(&a);
    lv_anim_set_exec_cb(&a, set_value);
    lv_anim_set_values(&a, 0, 100);
    lv_anim_set_repeat_delay(&a, 100);
    lv_anim_set_playback_delay(&a, 100);
    lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);

    lv_anim_set_time(&a, 2000);
    lv_anim_set_playback_time(&a, 500);
    lv_anim_set_var(&a, indic1);
    lv_anim_start(&a);

    lv_anim_set_time(&a, 1000);
    lv_anim_set_playback_time(&a, 1000);
    lv_anim_set_var(&a, indic2);
    lv_anim_start(&a);

    lv_anim_set_time(&a, 1000);
    lv_anim_set_playback_time(&a, 2000);
    lv_anim_set_var(&a, indic3);
    lv_anim_start(&a);
}