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    esp_lcd_rgb_panel_config_t panel_config = {
        .sram_trans_align = 32,
        .psram_trans_align = 32,
        .
        .
        .

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     #define EXAMPLE_LCD_PIXEL_CLOCK_HZ     (18 * 1000 * 1000)
#define EXAMPLE_LCD_H_RES              800
#define EXAMPLE_LCD_V_RES              480
#define EXAMPLE_LCD_HSYNC              1
#define EXAMPLE_LCD_HBP                40
#define EXAMPLE_LCD_HFP                20
#define EXAMPLE_LCD_VSYNC              1
#define EXAMPLE_LCD_VBP                10
#define EXAMPLE_LCD_VFP                5

#define EXAMPLE_LCD_BK_LIGHT_ON_LEVEL  1
#define EXAMPLE_LCD_BK_LIGHT_OFF_LEVEL !EXAMPLE_LCD_BK_LIGHT_ON_LEVEL
#define EXAMPLE_PIN_NUM_BK_LIGHT       -1
#define EXAMPLE_PIN_NUM_DISP_EN        -1

#define EXAMPLE_PIN_NUM_HSYNC          CONFIG_EXAMPLE_LCD_HSYNC_GPIO
#define EXAMPLE_PIN_NUM_VSYNC          CONFIG_EXAMPLE_LCD_VSYNC_GPIO
#define EXAMPLE_PIN_NUM_DE             CONFIG_EXAMPLE_LCD_DE_GPIO
#define EXAMPLE_PIN_NUM_PCLK           CONFIG_EXAMPLE_LCD_PCLK_GPIO

#define EXAMPLE_PIN_NUM_DATA0          CONFIG_EXAMPLE_LCD_DATA0_GPIO
#define EXAMPLE_PIN_NUM_DATA1          CONFIG_EXAMPLE_LCD_DATA1_GPIO
#define EXAMPLE_PIN_NUM_DATA2          CONFIG_EXAMPLE_LCD_DATA2_GPIO
#define EXAMPLE_PIN_NUM_DATA3          CONFIG_EXAMPLE_LCD_DATA3_GPIO
#define EXAMPLE_PIN_NUM_DATA4          CONFIG_EXAMPLE_LCD_DATA4_GPIO
#define EXAMPLE_PIN_NUM_DATA5          CONFIG_EXAMPLE_LCD_DATA5_GPIO
#define EXAMPLE_PIN_NUM_DATA6          CONFIG_EXAMPLE_LCD_DATA6_GPIO
#define EXAMPLE_PIN_NUM_DATA7          CONFIG_EXAMPLE_LCD_DATA7_GPIO
#define EXAMPLE_PIN_NUM_DATA8          CONFIG_EXAMPLE_LCD_DATA8_GPIO
#define EXAMPLE_PIN_NUM_DATA9          CONFIG_EXAMPLE_LCD_DATA9_GPIO
#define EXAMPLE_PIN_NUM_DATA10         CONFIG_EXAMPLE_LCD_DATA10_GPIO
#define EXAMPLE_PIN_NUM_DATA11         CONFIG_EXAMPLE_LCD_DATA11_GPIO
#define EXAMPLE_PIN_NUM_DATA12         CONFIG_EXAMPLE_LCD_DATA12_GPIO
#define EXAMPLE_PIN_NUM_DATA13         CONFIG_EXAMPLE_LCD_DATA13_GPIO
#define EXAMPLE_PIN_NUM_DATA14         CONFIG_EXAMPLE_LCD_DATA14_GPIO
#define EXAMPLE_PIN_NUM_DATA15         CONFIG_EXAMPLE_LCD_DATA15_GPIO


#if CONFIG_EXAMPLE_USE_DOUBLE_FB
#define EXAMPLE_LCD_NUM_FB             2
#else
#define EXAMPLE_LCD_NUM_FB             1
#endif // CONFIG_EXAMPLE_USE_DOUBLE_FB

#if CONFIG_EXAMPLE_LCD_DATA_LINES_16
#define EXAMPLE_DATA_BUS_WIDTH         16
#define EXAMPLE_PIXEL_SIZE             2
#define EXAMPLE_LV_COLOR_FORMAT        LV_COLOR_FORMAT_RGB565
#elif CONFIG_EXAMPLE_LCD_DATA_LINES_24
#define EXAMPLE_DATA_BUS_WIDTH         24
#define EXAMPLE_PIXEL_SIZE             3
#define EXAMPLE_LV_COLOR_FORMAT        LV_COLOR_FORMAT_RGB888
#endif

#define EXAMPLE_LVGL_DRAW_BUF_LINES    5 // number of display lines in each draw buffer
#define EXAMPLE_LVGL_TICK_PERIOD_MS    2
#define EXAMPLE_LVGL_TASK_STACK_SIZE   (3 * 1024)
#define EXAMPLE_LVGL_TASK_PRIORITY     2
    
    
 
 
 esp_lcd_rgb_panel_config_t panel_config = {
        .sram_trans_align = 32, //added by myself
        .psram_trans_align = 32, // added by myself
        .data_width = EXAMPLE_DATA_BUS_WIDTH,
        .dma_burst_size = 16,
        .num_fbs = EXAMPLE_LCD_NUM_FB,
#if CONFIG_EXAMPLE_USE_BOUNCE_BUFFER
        .bounce_buffer_size_px = 1 * EXAMPLE_LCD_H_RES,
#endif
        .clk_src = LCD_CLK_SRC_DEFAULT,
        .disp_gpio_num = EXAMPLE_PIN_NUM_DISP_EN,
        .pclk_gpio_num = EXAMPLE_PIN_NUM_PCLK,
        .vsync_gpio_num = EXAMPLE_PIN_NUM_VSYNC,
        .hsync_gpio_num = EXAMPLE_PIN_NUM_HSYNC,
        .de_gpio_num = EXAMPLE_PIN_NUM_DE,
        .data_gpio_nums = {
            EXAMPLE_PIN_NUM_DATA0,
            EXAMPLE_PIN_NUM_DATA1,
            EXAMPLE_PIN_NUM_DATA2,
            EXAMPLE_PIN_NUM_DATA3,
            EXAMPLE_PIN_NUM_DATA4,
            EXAMPLE_PIN_NUM_DATA5,
            EXAMPLE_PIN_NUM_DATA6,
            EXAMPLE_PIN_NUM_DATA7,
            EXAMPLE_PIN_NUM_DATA8,
            EXAMPLE_PIN_NUM_DATA9,
            EXAMPLE_PIN_NUM_DATA10,
            EXAMPLE_PIN_NUM_DATA11,
            EXAMPLE_PIN_NUM_DATA12,
            EXAMPLE_PIN_NUM_DATA13,
            EXAMPLE_PIN_NUM_DATA14,
            EXAMPLE_PIN_NUM_DATA15,
        },
        .timings = {
            .pclk_hz = EXAMPLE_LCD_PIXEL_CLOCK_HZ,
            .h_res = EXAMPLE_LCD_H_RES,
            .v_res = EXAMPLE_LCD_V_RES,
            .hsync_back_porch = EXAMPLE_LCD_HBP,
            .hsync_front_porch = EXAMPLE_LCD_HFP,
            .hsync_pulse_width = EXAMPLE_LCD_HSYNC,
            .vsync_back_porch = EXAMPLE_LCD_VBP,
            .vsync_front_porch = EXAMPLE_LCD_VFP,
            .vsync_pulse_width = EXAMPLE_LCD_VSYNC,
            .flags = {
                .pclk_active_neg = true,
            },
        },
        .flags.fb_in_psram = true, // allocate frame buffer in PSRAM
    };
    ESP_ERROR_CHECK(esp_lcd_new_rgb_panel(&panel_config, &panel_handle));
    
    (...)
    
        ESP_LOGI(TAG, "Allocate LVGL draw buffers");
    // it's recommended to allocate the draw buffer from internal memory, for better performance
    size_t draw_buffer_sz = EXAMPLE_LCD_H_RES * EXAMPLE_LVGL_DRAW_BUF_LINES * EXAMPLE_PIXEL_SIZE;
    buf1 = heap_caps_malloc(draw_buffer_sz, MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT);
    assert(buf1);
    

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bus->format_buffer = heap_caps_calloc(1, LCD_I80_IO_FORMAT_BUF_SIZE, MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL | MALLOC_CAP_DMA);

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bus->format_buffer = heap_caps_aligned_calloc(16, 1, LCD_I80_IO_FORMAT_BUF_SIZE, MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL | MALLOC_CAP_DMA);