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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Display driver for HCMS29xx
*
* This file declares the SPI based driver for a HCMS29xx 4 digit
* alphanumeric LED display
*/
/*
* Copyright (c) 2008 embedded brains GmbH & Co. KG
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _DISP_HCMS29XX_H
#define _DISP_HCMS29XX_H
#include <rtems.h>
#include <time.h>
#ifdef __cplusplus
extern "C" {
#endif
#define DISP_HCMS29XX_TEXT_CNT (128)
typedef struct {
rtems_device_minor_number minor; /* minor device number */
/*
* in the disp_buffer, the string to be displayed is placed
*/
char disp_buffer[DISP_HCMS29XX_TEXT_CNT];
int disp_buf_cnt; /* number of valid chars in disp_buffer */
/*
* in the trns buffer the string is transfered to display task
*/
char trns_buffer[DISP_HCMS29XX_TEXT_CNT];
/*
* in the dev_buffer, characters will be accumulated before display...
*/
char dev_buffer[DISP_HCMS29XX_TEXT_CNT];
int dev_buf_cnt; /* number of valid chars in dev_buffer */
rtems_id trns_sema_id; /* ID of disp trns buffer sema */
rtems_id task_id; /* ID of disp task */
bool rotate; /* FLAG: display is upside down */
} spi_disp_hcms29xx_param_t;
typedef struct {
rtems_libi2c_drv_t libi2c_drv_entry;
spi_disp_hcms29xx_param_t disp_param;
} disp_hcms29xx_drv_t;
/*
* pass this descriptor pointer to rtems_libi2c_register_drv
*/
extern rtems_libi2c_drv_t *disp_hcms29xx_driver_descriptor;
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
rtems_device_driver disp_hcms29xx_dev_initialize
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| prepare the display device driver to accept write calls |
| register device with its name |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
);
/*-------------------------------------------------------------------------*\
| Return Value: |
| rtems_status_code |
\*=========================================================================*/
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
rtems_device_driver disp_hcms29xx_dev_open
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| open the display device |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
);
/*-------------------------------------------------------------------------*\
| Return Value: |
| rtems_status_code |
\*=========================================================================*/
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
rtems_device_driver disp_hcms29xx_dev_write
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| write to display device |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
);
/*-------------------------------------------------------------------------*\
| Return Value: |
| rtems_status_code |
\*=========================================================================*/
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
rtems_device_driver disp_hcms29xx_dev_close
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| close the display device |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
);
/*-------------------------------------------------------------------------*\
| Return Value: |
| rtems_status_code |
\*=========================================================================*/
#define DISP_HCMS29XX_DRIVER { \
disp_hcms29xx_dev_initialize, \
disp_hcms29xx_dev_open, \
NULL, \
disp_hcms29xx_dev_write, \
NULL, \
disp_hcms29xx_dev_close}
#ifdef __cplusplus
}
#endif
#endif /* _DISP_HCMS29XX_H */
|
