Mercurial > co2meter / file comparison

comparison: components/u8g2/csrc/u8x8_display.c

components/u8g2/csrc/u8x8_display.c

changeset 0
88d965579617
equal deleted inserted replaced
-1:000000000000 0:88d965579617
1 /*
2
3 u8x8_display.c
4
5 Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
6
7 Copyright (c) 2016, olikraus@gmail.com
8 All rights reserved.
9
10 Redistribution and use in source and binary forms, with or without modification,
11 are permitted provided that the following conditions are met:
12
13 * Redistributions of source code must retain the above copyright notice, this list
14 of conditions and the following disclaimer.
15
16 * Redistributions in binary form must reproduce the above copyright notice, this
17 list of conditions and the following disclaimer in the documentation and/or other
18 materials provided with the distribution.
19
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
21 CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
22 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
25 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
30 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33
34
35 Abstraction layer for the graphics controller.
36 Main goal is the placement of a 8x8 pixel block (tile) on the display.
37
38 */
39
40
41 #include "u8x8.h"
42
43
44 /*==========================================*/
45 /* internal library function */
46
47 /*
48 this is a helper function for the U8X8_MSG_DISPLAY_SETUP_MEMORY function.
49 It can be called within the display callback function to carry out the usual standard tasks.
50
51 */
52 void u8x8_d_helper_display_setup_memory(u8x8_t *u8x8, const u8x8_display_info_t *display_info)
53 {
54 /* 1) set display info struct */
55 u8x8->display_info = display_info;
56 u8x8->x_offset = u8x8->display_info->default_x_offset;
57 }
58
59 /*
60 this is a helper function for the U8X8_MSG_DISPLAY_INIT function.
61 It can be called within the display callback function to carry out the usual standard tasks.
62
63 */
64 void u8x8_d_helper_display_init(u8x8_t *u8x8)
65 {
66 /* 2) apply port directions to the GPIO lines and apply default values for the IO lines*/
67 u8x8_gpio_Init(u8x8);
68 u8x8_cad_Init(u8x8);
69
70 /* 3) do reset */
71 u8x8_gpio_SetReset(u8x8, 1);
72 u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_MILLI, u8x8->display_info->reset_pulse_width_ms);
73 u8x8_gpio_SetReset(u8x8, 0);
74 u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_MILLI, u8x8->display_info->reset_pulse_width_ms);
75 u8x8_gpio_SetReset(u8x8, 1);
76 u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_MILLI, u8x8->display_info->post_reset_wait_ms);
77 }
78
79 /*==========================================*/
80 /* official functions */
81
82 uint8_t u8x8_DrawTile(u8x8_t *u8x8, uint8_t x, uint8_t y, uint8_t cnt, uint8_t *tile_ptr)
83 {
84 u8x8_tile_t tile;
85 tile.x_pos = x;
86 tile.y_pos = y;
87 tile.cnt = cnt;
88 tile.tile_ptr = tile_ptr;
89 return u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_DRAW_TILE, 1, (void *)&tile);
90 }
91
92 /* should be implemented as macro */
93 void u8x8_SetupMemory(u8x8_t *u8x8)
94 {
95 u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_SETUP_MEMORY, 0, NULL);
96 }
97
98 void u8x8_InitDisplay(u8x8_t *u8x8)
99 {
100 u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_INIT, 0, NULL);
101 }
102
103 void u8x8_SetPowerSave(u8x8_t *u8x8, uint8_t is_enable)
104 {
105 u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_SET_POWER_SAVE, is_enable, NULL);
106 }
107
108 void u8x8_SetFlipMode(u8x8_t *u8x8, uint8_t mode)
109 {
110 u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_SET_FLIP_MODE, mode, NULL);
111 }
112
113 void u8x8_SetContrast(u8x8_t *u8x8, uint8_t value)
114 {
115 u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_SET_CONTRAST, value, NULL);
116 }
117
118 void u8x8_RefreshDisplay(u8x8_t *u8x8)
119 {
120 u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_REFRESH, 0, NULL);
121 }
122
123 void u8x8_ClearDisplayWithTile(u8x8_t *u8x8, const uint8_t *buf)
124 {
125 u8x8_tile_t tile;
126 uint8_t h;
127
128 tile.x_pos = 0;
129 tile.cnt = 1;
130 tile.tile_ptr = (uint8_t *)buf; /* tile_ptr should be const, but isn't */
131
132 h = u8x8->display_info->tile_height;
133 tile.y_pos = 0;
134 do
135 {
136 u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_DRAW_TILE, u8x8->display_info->tile_width, (void *)&tile);
137 tile.y_pos++;
138 } while( tile.y_pos < h );
139 }
140
141 void u8x8_ClearDisplay(u8x8_t *u8x8)
142 {
143 uint8_t buf[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
144 u8x8_ClearDisplayWithTile(u8x8, buf);
145 }
146
147 void u8x8_FillDisplay(u8x8_t *u8x8)
148 {
149 uint8_t buf[8] = { 255, 255, 255, 255, 255, 255, 255, 255 };
150 u8x8_ClearDisplayWithTile(u8x8, buf);
151 }
152
153 void u8x8_ClearLine(u8x8_t *u8x8, uint8_t line)
154 {
155 uint8_t buf[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
156 u8x8_tile_t tile;
157 if ( line < u8x8->display_info->tile_height )
158 {
159 tile.x_pos = 0;
160 tile.y_pos = line;
161 tile.cnt = 1;
162 tile.tile_ptr = (uint8_t *)buf; /* tile_ptr should be const, but isn't */
163 u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_DRAW_TILE, u8x8->display_info->tile_width, (void *)&tile);
164 }
165 }

Mercurial Repository: co2meter

mercurial