lv_draw_ctx_t*draw_ctx; void(*draw_ctx_init)(struct_lv_disp_drv_t*disp_drv,lv_draw_ctx_t*draw_ctx); void(*draw_ctx_deinit)(struct_lv_disp_drv_t*disp_drv,lv_draw_ctx_t*draw_ctx); size_tdraw_ctx_size; #if LV_USE_USER_DATA void*user_data;/**< Custom display driver user ...
lv_disp_draw_buf_init(&draw_buf, buf, NULL, screenWidth *10);/*Initialize the display*//*初始化显示*/staticlv_disp_drv_t disp_drv; lv_disp_drv_init(&disp_drv );/*Change the following line to your display resolution*//*将以下行更改为您的显示分辨率*/disp_drv.hor_res=screenWidth; ...
lv_init(); lv_port_fs_init(); //初始化文件系统 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...
然后,我们将 draw_buf_dsc 设置为显示驱动程序的缓冲区。 优化显示驱动程序: 确保你的显示驱动程序尽可能高效。例如,使用DMA来加速数据传输,可以减少CPU的负载,从而提高刷新速度。 调整lv_tick_inc 的调用频率: lv_tick_inc 函数用于增加LVGL的内部计时器。通过调整其调用频率,你可以控制LVGL任务的执行速度。但是,...
/* Initialize the display */ lv_disp_drv_init(&disp_drv); /* Change the following line to your display resolution */ disp_drv.hor_res = screenWidth; disp_drv.ver_res = screenHeight; disp_drv.flush_cb = my_disp_flush; disp_drv.draw_buf = &draw_buf; lv_disp_drv_register(&disp...
//显示屏初始化WIDTH=width;HEIGHT=height;buf=newuint32_t[WIDTH*HEIGHT];lv_disp_draw_buf_init(&lv_disp_buf,lv_buf_1,lv_buf_2,DISP_BUF_SIZE);staticlv_disp_drv_t disp_drv;lv_disp_drv_init(&disp_drv);disp_drv.hor_res=WIDTH;disp_drv.ver_res=HEIGHT;disp_drv.draw_buf=&lv_disp_buf...
lv_color_t buf2[DISP_BUF_SIZE]; lv_disp_draw_buf_init(&disp_buf, buf, buf2, DISP_BUF...
disp_buf_t draw_buf_dsc_2; // static lv_color_t draw_buf_2_1[LV_HOR_RES_MAX * 10]; /*A buffer for 10 rows*/ // static lv_color_t draw_buf_2_1[LV_HOR_RES_MAX * 10]; /*An other buffer for 10 rows*/ // lv_disp_buf_init(&draw_buf_dsc_2, draw_buf_2_1, draw_...
Following can be done to simulate changing display driver after lv_disp_create lv_init();lv_disp_t*disp=lv_disp_create(DISP_HOR_RES,DISP_VER_RES);lv_disp_set_draw_ctx(disp,lv_draw_sw_init_ctx,lv_draw_sw_deinit_ctx,sizeof(lv_draw_sw_ctx_t)); ...
int main(void) { /*LittlevGL init*/ lv_init(); /*Linux frame buffer device init*/ fbdev_init(); /*A small buffer for LittlevGL to draw the screen's content*/ static lv_color_t buf[DISP_BUF_SIZE]; /*Initialize a descriptor for the buffer*/ static lv_disp_buf_t disp_buf; lv_...