T-Dongle-S3开发笔记—

T-Dongle-S3开发笔记——移植LVGL

添加lvgl组件

idf.py add-dependency lvgl/lvgl>=8.*

新建终端执行命令后出现了新的文件：

清除再编译后才会出现lvgl库

优化为本地组件

以上方式修改了组件文件内容重新编译后文件又会变回去。

所以我们要把lvgl变成本地组件

1、要把 idf_component.yml 文件删除

2、把managed_components\lvgl__lvgl命名更改为components/lvgl

3、项目路径下的CMakeLists.txt添加components\lvgl路径

4、进入menuconfig配置lvgl ,取消选中“Uncheck this to use custom lv_conf.h”。以lv_conf.h进行配置

添加lvgl_esp32_drivers

 git clone https://github.com/lvgl/lvgl_esp32_drivers.git

根目录CMakeLists.txt添加：

set(EXTRA_COMPONENT_DIRS 
"components/lvgl" 
"components/lvgl_esp32_drivers"
)

报错1：

IDF 5.0 及以上版本中 driver 已经不再作为 IDF 项目的基础组件，要使用这些非基础组件必须在 IDF 项目组件的 CMakeLists.txt 文件内明确指出。

解决方法：lvgl_esp32_drivers组件下的CMakeLists.txt添加driver

idf_component_register(SRCS ${SOURCES}
                       INCLUDE_DIRS ${LVGL_INCLUDE_DIRS}
                       REQUIRES lvgl driver)

报错2

bit_num 改为 duty_resolution

报错3

myproject/components/lvgl_esp32_drivers/lvgl_tft/esp_lcd_backlight.c:67:43: error: 'SIG_GPIO_OUT_IDX' undeclared (first use in this function)

添加头文件

#include <soc/gpio_sig_map.h>

报错4

implicit declaration of function 'gpio_matrix_out'; did you mean 'gpio_iomux_out'? [-Werror=implicit-function-declaration]

添加头文件（vscode上的提示功能还不行，报错3可以提示）

#include <rom/gpio.h>

报错5

error: 'LV_HOR_RES_MAX' undeclared (first use in this function);
did you mean 'LV_HOR_RES'?

lvgl_helpers.h添加定义

#define LV_HOR_RES_MAX  160
#define LV_HOR_RES_MAX  80

报错6

/myproject/components/lvgl_esp32_drivers/lvgl_tft/st7735s.c:101:9: error: implicit declaration of function 'gpio_pad_select_gpi
'; did you mean 'esp_rom_gpio_pad_select_gpio'? [-Werror=implicit-function-declaration]

disp_spi.h 添加头文件

#include <rom/gpio.h>

报错7

myproject/components/lvgl_esp32_drivers/lvgl_tft/st7735s.c:110:26: error: 'portTICK_RATE_MS' undeclared (first use in this function); did you mean 'portTICK_PERIOD_MS'?

portTICK_RATE_MS 全部换成 portTICK_PERIOD_MS

运行测试

测试代码

main.c

#include <stdio.h>
#include "esp_log.h"
#include "esp_system.h"
#include "freertos/FreeRTOS.h"
#include "freertos/event_groups.h"
#include "lvgl.h"
#include "lvgl_helpers.h"
 
#include "demos/lv_demos.h"
#include <esp_timer.h>
 
 
#define TAG "main"
 
 
void lv_tick_task(void *arg)
{
    lv_tick_inc(1);
}
 
void app_main(void)
{
    
    /* Initialize SPI or I2C bus used by the drivers */
    lvgl_driver_init();
 
    lv_init();
    /*Create a LED and switch it OFF*/
    //lv_obj_t * led1  = lv_led_create(lv_scr_act());
    //lv_obj_align(led1, NULL, LV_ALIGN_CENTER, -80);
    // lv_led_off(led1);

    lv_color_t *buf1 = heap_caps_malloc(DISP_BUF_SIZE * sizeof(lv_color_t), MALLOC_CAP_DMA);
    assert(buf1 != NULL);
    static lv_color_t *buf2 = NULL;
 
    static lv_disp_draw_buf_t disp_buf;
 
    uint32_t size_in_px = DISP_BUF_SIZE;
    lv_disp_draw_buf_init(&disp_buf, buf1, buf2, size_in_px);
    lv_disp_drv_t disp_drv;
    lv_disp_drv_init(&disp_drv);
    disp_drv.hor_res = LV_HOR_RES_MAX;
    disp_drv.ver_res = LV_VER_RES_MAX;
    disp_drv.flush_cb = disp_driver_flush;
    disp_drv.draw_buf = &disp_buf;
    lv_disp_drv_register(&disp_drv);
 
    const esp_timer_create_args_t periodic_timer_args = {
        .callback = &lv_tick_task,
        .name = "periodic_gui"};
    esp_timer_handle_t periodic_timer;
    ESP_ERROR_CHECK(esp_timer_create(&periodic_timer_args, &periodic_timer));
    ESP_ERROR_CHECK(esp_timer_start_periodic(periodic_timer, 1 * 1000));
 
    // lvgl demo演示
    lv_demo_widgets();
    // lv_demo_stress();
   
    while (1)
    {
        /* Delay 1 tick (assumes FreeRTOS tick is 10ms */
        vTaskDelay(pdMS_TO_TICKS(10));
        lv_task_handler();
    }
 
 
}