#include "lv_port_disp.h"
#include "lvgl.h"
#include "bsp_lcd_ili9341.h"

static lv_color_t lvgl_draw_buff1[LVGL_PORT_BUFF_SIZE];
static lv_color_t lvgl_draw_buff2[LVGL_PORT_BUFF_SIZE];

static void disp_flush(lv_disp_drv_t *disp_drv, const lv_area_t *area, lv_color_t *color_p)
{
  while (bsp_lcd_get_trans_stat() == 0); //等待上次传输完成
  lv_disp_flush_ready(disp_drv); //通知lvgl传输已完成
  bsp_lcd_draw_rect(area->x1, area->y1, area->x2, area->y2, color_p); //启动新的传输
}

void lv_port_disp_init()
{
  /* 向lvgl注册缓冲区 */
  static lv_disp_draw_buf_t draw_buf_dsc; //需要全程生命周期，设置为静态变量
  lv_disp_draw_buf_init(&draw_buf_dsc, lvgl_draw_buff1, lvgl_draw_buff2, LVGL_PORT_BUFF_SIZE);
  /* 创建并初始化用于在lvgl中注册显示设备的结构 */
  static lv_disp_drv_t disp_drv;
  lv_disp_drv_init(&disp_drv); //使用默认值初始化该结构
  /* 设置屏幕分辨率 */
  disp_drv.hor_res = BSP_LCD_X_PIXELS;
  disp_drv.ver_res = BSP_LCD_Y_PIXELS;
  /* 设置显示矩形函数，用于将矩形缓冲区刷新到屏幕上 */
  disp_drv.flush_cb = disp_flush;
  /* 设置缓冲区 */
  disp_drv.draw_buf = &draw_buf_dsc;
  /* 注册显示设备 */
  lv_disp_drv_register(&disp_drv);
}