1 /*
2 * Copyright (c) 2006-2022, RT-Thread Development Team
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 *
6 * Change Logs:
7 * Date Author Notes
8 * 2021-12-17 Wayne The first version
9 */
10 #include <lvgl.h>
11
12 #define LOG_TAG "lvgl.disp"
13 #define DBG_ENABLE
14 #define DBG_SECTION_NAME LOG_TAG
15 #define DBG_LEVEL DBG_ERROR
16 #define DBG_COLOR
17 #include <rtdbg.h>
18
19 #if !defined(NU_PKG_LVGL_RENDERING_LAYER)
20 #define NU_PKG_LVGL_RENDERING_LAYER "lcd"
21 #endif
22
23 /*A static or global variable to store the buffers*/
24 static lv_disp_draw_buf_t disp_buf;
25 static lv_disp_drv_t disp_drv; /*Descriptor of a display driver*/
26
27 static rt_device_t lcd_device = 0;
28 static struct rt_device_graphic_info info;
29
lcd_fb_flush(lv_disp_drv_t * disp_drv,const lv_area_t * area,lv_color_t * color_p)30 static void lcd_fb_flush(lv_disp_drv_t *disp_drv, const lv_area_t *area, lv_color_t *color_p)
31 {
32 /* Rendering */
33 struct rt_device_rect_info rect;
34
35 rect.x = area->x1;
36 rect.y = area->y1;
37 rect.width = area->x2 - area->x1 + 1;
38 rect.height = area->y2 - area->y1 + 1;
39
40 rt_device_control(lcd_device, RTGRAPHIC_CTRL_RECT_UPDATE, &rect);
41 lv_disp_flush_ready(disp_drv);
42 }
43
lcd_perf_monitor(struct _lv_disp_drv_t * disp_drv,uint32_t time,uint32_t px)44 void lcd_perf_monitor(struct _lv_disp_drv_t *disp_drv, uint32_t time, uint32_t px)
45 {
46 rt_kprintf("Elapsed: %dms, Pixel: %d, Bytes:%d\n", time, px, px * sizeof(lv_color_t));
47 }
48
lv_port_disp_init(void)49 void lv_port_disp_init(void)
50 {
51 rt_err_t result;
52 void *buf1 = RT_NULL;
53
54 lcd_device = rt_device_find(NU_PKG_LVGL_RENDERING_LAYER);
55 if (lcd_device == 0)
56 {
57 LOG_E("error!");
58 return;
59 }
60
61 /* get framebuffer address */
62 result = rt_device_control(lcd_device, RTGRAPHIC_CTRL_GET_INFO, &info);
63 if (result != RT_EOK && info.framebuffer == RT_NULL)
64 {
65 LOG_E("error!");
66 /* get device information failed */
67 return;
68 }
69
70 RT_ASSERT(info.bits_per_pixel == 8 || info.bits_per_pixel == 16 ||
71 info.bits_per_pixel == 24 || info.bits_per_pixel == 32);
72
73 buf1 = (void *)info.framebuffer;
74 rt_kprintf("LVGL: Use one buffers - buf1@%08x, size: %d bytes\n", buf1, info.smem_len);
75
76 /*Initialize `disp_buf` with the buffer(s).*/
77 lv_disp_draw_buf_init(&disp_buf, buf1, RT_NULL, info.smem_len / (info.bits_per_pixel / 8));
78
79 result = rt_device_open(lcd_device, 0);
80 if (result != RT_EOK)
81 {
82 LOG_E("error!");
83 return;
84 }
85
86 lv_disp_drv_init(&disp_drv); /*Basic initialization*/
87
88 /*Set the resolution of the display*/
89 disp_drv.hor_res = info.width;
90 disp_drv.ver_res = info.height;
91
92 /*Set a display buffer*/
93 disp_drv.draw_buf = &disp_buf;
94
95 /*Write the internal buffer (draw_buf) to the display*/
96 disp_drv.flush_cb = lcd_fb_flush;
97
98 /* Called after every refresh cycle to tell the rendering and flushing time + the number of flushed pixels */
99 //disp_drv.monitor_cb = lcd_perf_monitor;
100
101 /*Finally register the driver*/
102 lv_disp_drv_register(&disp_drv);
103 }
104