1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
// Set this to your frame buffer pixel format and size. You can also override these in your makefile.
#ifndef GDISP_LLD_PIXELFORMAT
#define GDISP_LLD_PIXELFORMAT GDISP_PIXELFORMAT_RGB565
#endif
#ifndef GDISP_SCREEN_WIDTH
#define GDISP_SCREEN_WIDTH 800
#endif
#ifndef GDISP_SCREEN_HEIGHT
#define GDISP_SCREEN_HEIGHT 600
#endif
#ifdef GDISP_DRIVER_VMT
#if GDISP_SCREEN_WIDTH > 4096 || GDISP_SCREEN_HEIGHT > 4096
#error "Raspberry Pi Framebuffer: Screen size is defined too large. Max is 4096x4096"
#endif
#include "rpi_mailbox.h"
typedef struct FrameBufferDescription {
uint32_t width;
uint32_t height;
uint32_t vWidth;
uint32_t vHeight;
uint32_t pitch;
uint32_t bitDepth;
uint32_t x;
uint32_t y;
void * pointer;
uint32_t size;
} FrameBufferDescription;
static FrameBufferDescription FrameBufferInfo __attribute__((aligned (16))) = { 1024, 768, 1024, 768, 0, 24, 0, 0, 0, 0 };
static void board_init(GDisplay *g, fbInfo *fbi) {
// Initialize the Raspberry Pi frame buffer
FrameBufferInfo.width = GDISP_SCREEN_WIDTH;
FrameBufferInfo.height = GDISP_SCREEN_HEIGHT;
FrameBufferInfo.vWidth = GDISP_SCREEN_WIDTH;
FrameBufferInfo.vHeight = GDISP_SCREEN_HEIGHT;
FrameBufferInfo.bitDepth = LLDCOLOR_BITS;
rpi_writemailbox(1, 0x40000000 + (uint32_t) &FrameBufferInfo);
if (rpi_readmailbox(1) != 0)
gfxHalt("Could not set display parameters")
// Set the details of the frame buffer
g->g.Width = GDISP_SCREEN_WIDTH;
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Backlight = 100;
g->g.Contrast = 50;
fbi->linelen = g->g.Width * sizeof(LLDCOLOR_TYPE); // bytes per row
fbi->pixels = FrameBufferInfo.pointer; // pointer to the memory frame buffer
}
#if GDISP_HARDWARE_FLUSH
static void board_flush(GDisplay *g) {
(void) g;
}
#endif
#if GDISP_NEED_CONTROL
static void board_backlight(GDisplay *g, uint8_t percent) {
(void) g;
(void) percent;
}
static void board_contrast(GDisplay *g, uint8_t percent) {
(void) g;
(void) percent;
}
static void board_power(GDisplay *g, gPowermode pwr) {
(void) g;
(void) pwr;
}
#endif
#endif /* GDISP_DRIVER_VMT */
|
