blob: 0a9b266573fc775c91c5a8b30becda01dfbbc59f (
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
|
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011 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 STM8S/pal_lld.c
* @brief STM8S 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. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief Pads mode setup.
* @details This function programs a pads group belonging to the same port
* with the specified mode.
* @note This function is not meant to be invoked directly by the
* application code.
* @note @p PAL_MODE_UNCONNECTED is implemented as push pull output at 2MHz.
*
* @param[in] port the port identifier
* @param[in] mask the group mask
* @param[in] mode the mode
*
* @notapi
*/
void _pal_lld_setgroupmode(ioportid_t port,
ioportmask_t mask,
uint_fast8_t mode) {
switch (mode & PAL_MODE_MASK) {
case PAL_MODE_RESET:
case PAL_MODE_INPUT_PULLUP:
port->DDR &= ~mask;
port->CR1 |= mask;
port->CR2 &= ~mask;
break;
case PAL_MODE_INPUT:
case PAL_MODE_INPUT_ANALOG:
port->DDR &= ~mask;
port->CR1 &= ~mask;
port->CR2 &= ~mask;
break;
case PAL_MODE_UNCONNECTED:
case PAL_MODE_OUTPUT_PUSHPULL_SLOW:
port->DDR |= mask;
port->CR1 |= mask;
port->CR2 &= ~mask;
break;
case PAL_MODE_OUTPUT_PUSHPULL:
port->DDR |= mask;
port->CR1 |= mask;
port->CR2 |= mask;
break;
case PAL_MODE_OUTPUT_OPENDRAIN_SLOW:
port->DDR |= mask;
port->CR1 &= ~mask;
port->CR2 &= ~mask;
break;
case PAL_MODE_OUTPUT_OPENDRAIN:
port->DDR |= mask;
port->CR1 &= ~mask;
port->CR2 |= mask;
break;
}
}
#endif /* HAL_USE_PAL */
/** @} */
|
