aboutsummaryrefslogtreecommitdiffstats
path: root/src/wiring/io.h
blob: 9f6aa4ac4d5b32843d72708f9ec05782884bc880 (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
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
/* *****************************************************************************
 *  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/>.
 *
 *  Created: 12/18/09 02:40:56
 *  Copyright (c) 2009 Perry L. Hung. All rights reserved.
 *
 * ****************************************************************************/

/**
 *  @file io.h
 *
 *  @brief 
 */

#ifndef _IO_H
#define _IO_H

#include <inttypes.h>
#include "gpio.h"
#include "adc.h"

#ifdef __cplusplus
extern "C"{
#endif

/* stash these here for now  */
#define D0    0
#define D1    1
#define D2    2
#define D3    3
#define D4    4
#define D5    5
#define D6    6
#define D7    7
#define D8    8
#define D9    9
#define D10  10
#define D11  11
#define D12  12
#define D13  13
#define D14  14
#define D15  15
#define D16  16
#define D16  16
#define D17  17
#define D18  18
#define D19  19
#define D20  20
#define D21  21
#define D22  22
#define D23  23
#define D24  24
#define D25  25
#define D26  26
#define D27  27
#define D28  28
#define D29  29
#define D30  30
#define D31  31
#define D32  32
#define D33  33
#define D34  34
#define D35  35
#define D36  36
#define D37  37
#define D38  38
#define D39  39

typedef enum WiringPinMode {
    OUTPUT,
    OUTPUT_OPEN_DRAIN,
    INPUT,
    INPUT_ANALOG,
    INPUT_PULLUP,
    INPUT_PULLDOWN,
    INPUT_FLOATING,
    PWM
} WiringPinMode;

typedef struct PinMapping {
    GPIO_Port *port;
    uint32 pin;
    uint32 adc;
    TimerCCR timer_channel;
} PinMapping;

#define ADC_INVALID       0xFFFFFFFF
#define TIMER_INVALID     (TimerCCR)0xFFFFFFFF

/* Set pin to mode
 * pinMode(pin, mode):
 *     pin -> {0-38, D0-D39, A0-16}
 *     mode -> {
 *         INPUT/INPUT_DIGITAL
 *         INPUT_PULLUP
 *         INPUT_PULLDOWN
 *         INPUT_ANALOG
 *         OUTPUT/OUTPUT_PP
 *         OUTPUT_OPEN_DRAIN
 *     }
 */
void pinMode(uint8_t, uint8_t);

/*
 * Writes VALUE to digital pin[0-38]
 * digitalWrite(pin, value):
 *     pin -> {0-38, D0-D39, A0-16}
 *     value -> LOW, HIGH;
*/
void digitalWrite(uint8_t, uint8_t);

/* Read a digital value from pin, the pin mode must be set to
 * {INPUT, INPUT_PULLUP, INPUT_PULLDOWN}
 * digitalRead(pin)
 *     pin -> {0-38, D0-D39, A0-16}
 */
uint32_t digitalRead(uint8_t);

/* Read an analog value from pin, the pin mode must be set
 * to INPUT_ANALOG
 * analogRead(pin)
 *     pin -> {A0-A16}
 *     */
uint32_t analogRead(uint8_t);

#ifdef __cplusplus
} // extern "C"
#endif
#endif