WhyCan Forum(哇酷开发者社区)

basicdev 说：

内存指针为NULL,不能继续执行了

是的我忘记加这个了 lv_init();

/*Add a display the LittlevGL sing the frame buffer driver*/
    lv_disp_drv_t disp_drv;
    lv_disp_drv_init(&disp_drv);
   disp_drv.disp_flush = fbdev_flush;      /*It flushes the internal graphical buffer to the frame buffer*/
    lv_disp_drv_register(&disp_drv);

我这里是是没有用他的那个模拟器   直接就是放到屏幕上去显示 

所以我就直接从led里面的创建函数复制过来了lv_test_led_1，刚才测试还是一样的额  所以我没有用那个demo_create();

无情一刀 说：

刚才里面的这个lv_task_handler函数具体是干什么用的了

lv_task_handler() 一定要调用， 否则GUI 不能被驱动, 相当于单片鸡的晶振.

https://github.com/littlevgl/lvgl

Porting
In the simplest case you need 5 things:

Call lv_tick_inc(x) every x milliseconds in a Timer or Task (x should be between 1 and 10)
Register a function which can copy a pixel array to an area of the screen.
Register a function which can read an input device. (E.g. touch pad)
Copy lv_conf_templ.h as lv_conf.h and set at least LV_HOR_RES, LV_VER_RES and LV_COLOR_DEPTH.
Call lv_task_handler() periodically every few milliseconds. For a detailed description visit https://github.com/littlevgl/lvgl/wiki/Porting Or check the Porting tutorial