#pragma once #include "lvgl.h" typedef struct _lv_speedmeter_t lv_speedmeter_t; lv_obj_t* lv_speedmeter_create(lv_obj_t* parent,int max_speed,const char* unit); void lv_speedmeter_set_speed(lv_obj_t* obj, float speed); float lv_speedmeter_get_speed(lv_obj_t* obj); void lv_speedmeter_set_unit_label(lv_obj_t* obj, char* label);