lv_init(); fbdev_init(); static lv_color_t buf[DISP_BUF_SIZE]; /*Initialize a descriptorforthe buffer*/ static lv_disp_draw_buf_t disp_buf; lv_disp_draw_buf_init(&disp_buf, buf, NULL, DISP_BUF_SIZE); static lv_
在这其中调用了fbdev_init或lcddev_init(当fb初始化失败时调用lcd初始化),打开底层实现注册好的fb驱动,并通过ioctl系统调用的方法得到底层fb驱动的信息(主要为显示屏信息vinfo,与图层信息pinfo),并放在一个关键变量state中(见fbdev.c),再对disp_drv中的分辨率与刷新回调函数进行赋值,这些都是在fbdev_init中做的事...
lv_img_decoder_built_in_close lv_extra_init lv_flex_init lv_grid_init ->fbdev_init--打开FBDEV_PATH设备,获取FBIOGET_FSCREENINFO/FBIOGET_VSCREENINFO信息,进行内存mmap映射。 ->lv_disp_draw_buf_init--初始化一个lv_disp_draw_buf_t。 ->lv_disp_drv_register-- lv_timer_create--每隔LV_DISP_DE...
lv_init(); //lvgl gui初始化 fbdev_init(); //fb初始化 此函数在 lv_drivers/display/fbdev.c 中,就是打开fb设备映射显存出来使用 static lv_color_t buf[DISP_BUF_SIZE]; static lv_disp_buf_t disp_buf; lv_disp_buf_init(&disp_buf, buf, NULL, DISP_BUF_SIZE); lv_disp_drv_t disp_drv...
lv_init(); /*Linux frame buffer device init*/ fbdev_init(); /*A small buffer for LittlevGL to draw the screen's content*/ staticlv_color_t buf[DISP_BUF_SIZE]; /*Initialize a descriptor for the buffer*/ staticlv_disp_draw_buf_t disp_buf; ...
/*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_draw_buf_t disp_buf; ...
fbdev_init(); static lv_color_t buf[DISP_BUF_SIZE]; /*Initialize a descriptor for the buffer*/ static lv_disp_draw_buf_t disp_buf; lv_disp_draw_buf_init(&disp_buf, buf, NULL, DISP_BUF_SIZE); static lv_disp_drv_t disp_drv; ...
lv_init(); //lvgl gui初始化 fbdev_init(); //fb初始化 此函数在 lv_drivers/display/fbdev.c 中,就是打开fb设备映射显存出来使用 static lv_color_t buf[DISP_BUF_SIZE]; static lv_disp_buf_t disp_buf; lv_disp_buf_init(&disp_buf, buf, NULL, DISP_BUF_SIZE); lv_disp_drv_t disp_drv...
fbdev_init();lv_disp_draw_buf_init(&disp_buf, buf, NULL, DISP_BUF_SIZE);lv_disp_drv_init...
void fbdev_init(void) { // Open the file for reading and writing fbfd = open(FBDEV_PATH, O_RDWR); if (fbfd == -1) { perror("Error: cannot open framebuffer device"); return; } printf("The framebuffer device was opened successfully.\n"); ...