然后遍历inv_areas[i],看该区域是否已经被添加过,如果没有事先添加过,则将该区域保存在inv_areas[disp->inv_p],这里,inv_p最大为LV_INV_BUF_SIZE,即32. 当该inv_areas[]存满时,则将inv_置0,相当于将该无效区域清空,并将整个屏幕区域保存在inv_areas[0],刷新整个屏幕。 而_lv_inv_area接口被调用流...
static lv_color_t buf[DISP_BUF_SIZE]; /*Initialize a descriptor for the buffer*/ static lv_disp_draw_buf_t disp_buf; NULL, DISP_BUF_SIZE); /*Initialize and register a display driver*/ static lv_disp_drv_t disp_drv; lv_disp_drv_init(&disp_drv); disp_drv.draw_buf = &disp_buf...
staticlv_color_t buf[DISP_BUF_SIZE]; /*Initialize a descriptor for the buffer*/ staticlv_disp_draw_buf_t disp_buf; lv_disp_draw_buf_init(&disp_buf, buf,NULL, DISP_BUF_SIZE); /*Initialize and register a display driver*/ staticlv_disp_drv_t disp_drv; lv_disp_drv_init(&disp_drv...
staticlv_color_tbuf_1[DISP_BUF_SIZE];// 缓冲区为屏幕大小的1/10 /* 初始化显示缓冲区 */ lv_disp_draw_buf_init(&draw_buf, buf_1,NULL, DISP_BUF_SIZE); /*--- 通过堆空间创建缓冲区 ---*/ #defineDISP_BUF_SIZE ((240*320)/10) staticlv_disp_draw_buf_tdraw_buf;// 绘制缓冲区的...
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_disp_drv_t disp_drv; lv_disp_drv_init(...
--- */#defineAITA_DISP_BUF_SIZE (128 * 1024)#defineAITA_SCREEN_WIDTH 480#defineAITA_SCREEN_HEIGHT 480#defineAITA_TITLE_STRING"AITA Weather for LicheeRV with LVGL"#defineSEND_PERIOD 1000#defineerrlog(errmsg) do{ perror(errmsg);\ printf("---%s---%s---%d---\n", __FILE__, __func...
static lv_disp_draw_buf_t disp_buf; uint32_t size_in_px = DISP_BUF_SIZE; /* Initialize the working buffer depending on the selected display. */ lv_disp_draw_buf_init(&disp_buf, buf1, buf2, size_in_px); lv_disp_drv_t disp_drv; ...
lvgl.dropdown_get_selected_str(dropdown, buf, buf_size) 将所选选项的名称复制到 buf。 方向# 该列表可以在任何一侧创建。默认值 lvgl.DROPDOWN_DOWN 可以通过功能进行修改。 lvgl.dropdown_set_dir(dropdown, lvgl.DROPDOWN_DIR_LEFT/RIGHT/UP/DOWN) 如果列表垂直于屏幕之外,它将与边缘对齐。 符号# ...
static lv_disp_draw_buf_t disp_buf; uint32_t size_in_px = DISP_BUF_SIZE; /* 就是这里传入了显示BUFF的大小 480 x 40 */ /* Initialize the working buffer depending on the selected display. * NOTE: buf2 == NULL when using monochrome displays. */ lv_disp_draw_buf_init(&disp_buf,...
lv_disp_draw_buf_init(&draw_buf_dsc_1,lcd_get_lcd_buffer1() ,NULL, LCD_BUF_SIZE);staticlv_disp_drv_t disp_drv;/*Descriptor of a display driver*/lv_disp_drv_init(&disp_drv);/*Basic initialization*//*Set the resolution of the display*/disp_drv.hor_res = LCD_HEIGHT;//LCD_WIDTH...