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
|
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012,2013 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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.
ChibiOS/RT 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/>.
*/
/**
* @file AVR/pal_lld.c
* @brief AVR GPIO low level driver code.
*
* @addtogroup PAL
* @{
*/
#include "ch.h"
#include "hal.h"
#if HAL_USE_PAL || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief AVR GPIO ports configuration.
* @details GPIO registers initialization.
*
* @param[in] config the AVR ports configuration
*
* @notapi
*/
void _pal_lld_init(const PALConfig *config) {
#if defined(PORTA) || defined(__DOXYGEN__)
PORTA = config->porta.out;
DDRA = config->porta.dir;
#endif
#if defined(PORTB) || defined(__DOXYGEN__)
PORTB = config->portb.out;
DDRB = config->portb.dir;
#endif
#if defined(PORTC) || defined(__DOXYGEN__)
PORTC = config->portc.out;
DDRC = config->portc.dir;
#endif
#if defined(PORTD) || defined(__DOXYGEN__)
PORTD = config->portd.out;
DDRD = config->portd.dir;
#endif
#if defined(PORTE) || defined(__DOXYGEN__)
PORTE = config->porte.out;
DDRE = config->porte.dir;
#endif
#if defined(PORTF) || defined(__DOXYGEN__)
PORTF = config->portf.out;
DDRF = config->portf.dir;
#endif
#if defined(PORTG) || defined(__DOXYGEN__)
PORTG = config->portg.out;
DDRG = config->portg.dir;
#endif
#if defined(PORTH) || defined(__DOXYGEN__)
PORTH = config->porth.out;
DDRH = config->porth.dir;
#endif
#if defined(PORTJ) || defined(__DOXYGEN__)
PORTJ = config->portj.out;
DDRJ = config->portj.dir;
#endif
#if defined(PORTK) || defined(__DOXYGEN__)
PORTK = config->portk.out;
DDRK = config->portk.dir;
#endif
#if defined(PORTL) || defined(__DOXYGEN__)
PORTL = config->portl.out;
DDRL = config->portl.dir;
#endif
}
/**
* @brief Pads mode setup.
* @details This function programs a pads group belonging to the same port
* with the specified mode.
*
* @param[in] port the port identifier
* @param[in] mask the group mask
* @param[in] mode the mode
*
* @note This function is not meant to be invoked directly by the application
* code.
* @note @p PAL_MODE_UNCONNECTED is implemented as output as recommended by
* the AVR Family User's Guide. Unconnected pads are set to input
* with pull-up by default.
*
* @notapi
*/
void _pal_lld_setgroupmode(ioportid_t port,
ioportmask_t mask,
iomode_t mode) {
switch (mode) {
case PAL_MODE_RESET:
case PAL_MODE_INPUT:
case PAL_MODE_INPUT_ANALOG:
port->dir &= ~mask;
port->out &= ~mask;
break;
case PAL_MODE_UNCONNECTED:
case PAL_MODE_INPUT_PULLUP:
port->dir &= ~mask;
port->out |= mask;
break;
case PAL_MODE_OUTPUT_PUSHPULL:
port->dir |= mask;
break;
}
}
#endif /* HAL_USE_PAL */
/** @} */
|
