在最简单的情况下,仅需要设置 lv_disp_drv_t 的以下两个字段: buffer 指向已初始化的 lv_disp_buf_t 变量的指针。 flush_cb 回调函数,用于将缓冲区的内容复制到显示的特定区域。刷新准备就绪后,需要调用lv_disp_flush_ready()。LVGL可能会以多个块呈现屏幕,因此多次调用flush_cb。使用 lv_disp_flush_is_las...
/* Change to your screen resolution */ static uint32_t screenWidth; static uint32_t screenHeight; static lv_disp_draw_buf_t draw_buf; static lv_color_t *disp_draw_buf; static lv_disp_drv_t disp_drv; /* Initialize the display */ lv_disp_drv_init(&disp_drv); /* Change the fo...
初始化lv_disp_draw_buf_t && lv_disp_drv_t这两个结构体然后对应初始化绘制缓冲区的内部图形缓冲区,显示驱动程序。 初始化缓存区 对于lv_disp_draw_buf_t: 复制 /*一个静态或全局变量来存储缓冲区*/staticlv_disp_draw_buf_tdisp_buf;/*静态或全局缓冲区(s)。第二个缓冲区是可选的*/staticlv_color_...
1. 2. 3. 将lv_color_t的类型从lv_color_t修改为与新的位深度匹配的类型,例如lv_color16_t: staticlv_disp_buf_tdisp_buf;staticlv_color16_tbuf[LV_HOR_RES_MAX*10];/*Declare a buffer for 10 lines*/lv_disp_buf_init(&disp_buf,buf,NULL,LV_HOR_RES_MAX*10);/*Initialize the display bu...
// rt_memset(buffer, 0x00, LV_HOR_RES_MAX * LV_VER_RES_MAX*sizeof(lv_color_t)); /* Example for 1) */ static lv_disp_buf_t disp_buf; //这个地方需要重新用一个缓存,但为什么呢??? lv_disp_buf_init(&disp_buf, buffer, NULL, LV_HOR_RES_MAX * LV_VER_RES_MAX); /*Initialize...
*/#include<lv_demo.h>//这一行只有安装了lv_examples库才能直接用/*Change to your screen resolution*//*改变你的屏幕分辨率*/staticconstuint16_t screenWidth =480;staticconstuint16_t screenHeight =320;staticlv_disp_draw_buf_t draw_buf;staticlv_color_t buf[ screenWidth *10];...
static lv_disp_buf_t disp_buf; static lv_color_t buf[LV_HOR_RES_MAX * 10]; /*Declare a buffer for 10 lines*/ lv_disp_buf_init(&disp_buf buf NULL LV_HOR_RES_MAX * 10); /*Initialize the display buffer*/ /*Linux frame buffer device init*/ fbdev_init(); /*Add a display th...
lv_disp_t * disp = lv_disp_create(WIDTH, HEIGHT); /*Basic initialization with horizontal and vertical resolution in pixels*/ lv_disp_set_flush_cb(disp, my_flush_cb); /*Set a flush callback to draw to the display*/ lv_disp_set_draw_buffers(disp, buf_1, buf_2, sizeof(buf_1),...
lv_disp_draw_buf_t*draw_buf; uint32_tdirect_mode:1;/**< 1: Use screen-sized buffers and draw to absolute coordinates*/ uint32_tfull_refresh:1;/**< 1: Always make the whole screen redrawn*/ uint32_tsw_rotate:1;/**< 1: use software rotation (slower)*/ ...
typedef struct_disp_tlv_disp_t Functions voidlv_disp_drv_init(lv_disp_drv_t*driver) voidlv_disp_buf_init(lv_disp_buf_t*disp_buf, void *buf1, void *buf2, uint32_t size_in_px_cnt) lv_disp_t*lv_disp_drv_register(lv_disp_drv_t*driver) ...