rt-thread-official/bsp/nuvoton/numaker-m467hj/applications/lvgl/lv_port_disp.c

100 lines
2.7 KiB
C

/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-12-17 Wayne The first version
*/
#include <lvgl.h>
#define LOG_TAG "lvgl.disp"
#define DBG_ENABLE
#define DBG_SECTION_NAME LOG_TAG
#define DBG_LEVEL DBG_ERROR
#define DBG_COLOR
#include <rtdbg.h>
/*A static or global variable to store the buffers*/
static lv_disp_draw_buf_t disp_buf;
static lv_disp_drv_t disp_drv; /*Descriptor of a display driver*/
static rt_device_t lcd_device = 0;
static struct rt_device_graphic_info info;
static void lcd_fb_flush(lv_disp_drv_t *disp_drv, const lv_area_t *area, lv_color_t *color_p)
{
/* Rendering */
struct rt_device_rect_info rect;
rect.x = area->x1;
rect.y = area->y1;
rect.width = area->x2 - area->x1 + 1;
rect.height = area->y2 - area->y1 + 1;
rt_device_control(lcd_device, RTGRAPHIC_CTRL_RECT_UPDATE, &rect);
lv_disp_flush_ready(disp_drv);
}
void lcd_perf_monitor(struct _lv_disp_drv_t *disp_drv, uint32_t time, uint32_t px)
{
rt_kprintf("Elapsed: %dms, Pixel: %d, Bytes:%d\n", time, px, px * sizeof(lv_color_t));
}
void lv_port_disp_init(void)
{
rt_err_t result;
void *buf1 = RT_NULL;
lcd_device = rt_device_find("lcd");
if (lcd_device == 0)
{
LOG_E("error!");
return;
}
/* get framebuffer address */
result = rt_device_control(lcd_device, RTGRAPHIC_CTRL_GET_INFO, &info);
if (result != RT_EOK && info.framebuffer == RT_NULL)
{
LOG_E("error!");
/* get device information failed */
return;
}
RT_ASSERT(info.bits_per_pixel == 8 || info.bits_per_pixel == 16 ||
info.bits_per_pixel == 24 || info.bits_per_pixel == 32);
buf1 = (void *)info.framebuffer;
rt_kprintf("LVGL: Use one buffers - buf1@%08x, size: %d bytes\n", buf1, info.smem_len);
/*Initialize `disp_buf` with the buffer(s).*/
lv_disp_draw_buf_init(&disp_buf, buf1, RT_NULL, info.smem_len / (info.bits_per_pixel / 8));
result = rt_device_open(lcd_device, 0);
if (result != RT_EOK)
{
LOG_E("error!");
return;
}
lv_disp_drv_init(&disp_drv); /*Basic initialization*/
/*Set the resolution of the display*/
disp_drv.hor_res = info.width;
disp_drv.ver_res = info.height;
/*Set a display buffer*/
disp_drv.draw_buf = &disp_buf;
/*Write the internal buffer (draw_buf) to the display*/
disp_drv.flush_cb = lcd_fb_flush;
/* Called after every refresh cycle to tell the rendering and flushing time + the number of flushed pixels */
//disp_drv.monitor_cb = lcd_perf_monitor;
/*Finally register the driver*/
lv_disp_drv_register(&disp_drv);
}