blob: 914138c75f2bafca46eeb783f93680c95cd4dc6e (
plain)
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
|
/* Target dependent code for ARC processor family, for GDB, the GNU debugger.
Copyright 2008, 2009 Free Software Foundation, Inc.
Contributed by ARC International (www.arc.com)
Authors:
Richard Stuckey <richard.stuckey@arc.com>
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/******************************************************************************/
/* */
/* Outline: */
/* This header file defines operations for reading data from / writing */
/* data to a parallel port using a GPIO (General Purpose Input/Output) */
/* driver. */
/* */
/******************************************************************************/
#ifndef ARC_GPIO_H
#define ARC_GPIO_H
/* ARC header files */
#include "arc-support.h"
#define GPIO_DEVICE "/dev/gpio"
typedef enum
{
DATA_PORT = 0,
STATUS_PORT = 1,
CONTROL_PORT = 2
} ParallelPort;
typedef unsigned char Byte;
typedef struct
{
ParallelPort port;
Byte data;
} GPIO_Pair;
Boolean gpio_open (void);
void gpio_close (void);
void gpio_write (ParallelPort port, Byte data);
Byte gpio_read (ParallelPort port);
void gpio_write_array (GPIO_Pair array[], unsigned int num_elements);
extern Boolean gpio_port_error;
#endif /* ARC_GPIO_H */
/******************************************************************************/
|
