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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
|
/****************************************************************************
* config/kwikstik-k40/src/up_nsh.c
* arch/arm/src/board/up_nsh.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdbool.h>
#include <stdio.h>
#include <debug.h>
#include <errno.h>
#ifdef CONFIG_KINETIS_SDHC
# include <nuttx/sdio.h>
# include <nuttx/mmcsd.h>
#endif
#include "kinetis_internal.h"
#include "kwikstik-internal.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* PORT and SLOT number probably depend on the board configuration */
#ifdef CONFIG_ARCH_BOARD_KWIKSTIK_K40
# define NSH_HAVEUSBDEV 1
# define NSH_HAVEMMCSD 1
# if defined(CONFIG_NSH_MMCSDSLOTNO) && CONFIG_NSH_MMCSDSLOTNO != 0
# error "Only one MMC/SD slot, slot 0"
# undef CONFIG_NSH_MMCSDSLOTNO
# endif
# ifndef CONFIG_NSH_MMCSDSLOTNO
# define CONFIG_NSH_MMCSDSLOTNO 0
# endif
#else
/* Add configuration for new Kinetis boards here */
# error "Unrecognized Kinetis board"
# undef NSH_HAVEUSBDEV
# undef NSH_HAVEMMCSD
#endif
/* Can't support USB features if USB is not enabled */
#ifndef CONFIG_USBDEV
# undef NSH_HAVEUSBDEV
#endif
/* Can't support MMC/SD features if mountpoints are disabled or if SDHC support
* is not enabled.
*/
#if defined(CONFIG_DISABLE_MOUNTPOINT) || !defined(CONFIG_KINETIS_SDHC)
# undef NSH_HAVEMMCSD
#endif
#ifndef CONFIG_NSH_MMCSDMINOR
# define CONFIG_NSH_MMCSDMINOR 0
#endif
/* We expect to receive GPIO interrupts for card insertion events */
#ifndef CONFIG_GPIO_IRQ
# error "CONFIG_GPIO_IRQ required for card detect interrupt"
#endif
#ifndef CONFIG_KINETIS_PORTEINTS
# error "CONFIG_KINETIS_PORTEINTS required for card detect interrupt"
#endif
/* Debug ********************************************************************/
#ifdef CONFIG_CPP_HAVE_VARARGS
# ifdef CONFIG_DEBUG
# define message(...) lowsyslog(__VA_ARGS__)
# else
# define message(...) printf(__VA_ARGS__)
# endif
#else
# ifdef CONFIG_DEBUG
# define message lowsyslog
# else
# define message printf
# endif
#endif
/****************************************************************************
* Private Types
****************************************************************************/
/* This structure encapsulates the global variable used in this file and
* reduces the probability of name collistions.
*/
#ifdef NSH_HAVEMMCSD
struct kinetis_nsh_s
{
FAR struct sdio_dev_s *sdhc; /* SDIO driver handle */
bool inserted; /* True: card is inserted */
};
#endif
/****************************************************************************
* Private Data
****************************************************************************/
#ifdef NSH_HAVEMMCSD
static struct kinetis_nsh_s g_nsh;
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: kinetis_mediachange
****************************************************************************/
#ifdef NSH_HAVEMMCSD
static void kinetis_mediachange(void)
{
bool inserted;
/* Get the current value of the card detect pin. This pin is pulled up on
* board. So low means that a card is present.
*/
inserted = !kinetis_gpioread(GPIO_SD_CARDDETECT);
/* Has the pin changed state? */
if (inserted != g_nsh.inserted)
{
/* Yes.. perform the appropriate action (this might need some debounce). */
g_nsh.inserted = inserted;
sdhc_mediachange(g_nsh.sdhc, inserted);
}
}
#endif
/****************************************************************************
* Name: kinetis_cdinterrupt
****************************************************************************/
#ifdef NSH_HAVEMMCSD
static int kinetis_cdinterrupt(int irq, FAR void *context)
{
/* All of the work is done by kinetis_mediachange() */
kinetis_mediachange();
return OK;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nsh_archinitialize
*
* Description:
* Perform architecture specific initialization
*
****************************************************************************/
int nsh_archinitialize(void)
{
#ifdef NSH_HAVEMMCSD
int ret;
/* Configure GPIO pins.
*
* First CD power. The initial state will provide SD power.
*/
kinetis_pinconfig(GPIO_SD_CARDON); /* Applies power to the card */
/* Attached the card detect interrupt (but don't enable it yet) */
kinetis_pinconfig(GPIO_SD_CARDDETECT);
kinetis_pinirqattach(GPIO_SD_CARDDETECT, kinetis_cdinterrupt);
/* Mount the SDHC-based MMC/SD block driver */
/* First, get an instance of the SDHC interface */
message("nsh_archinitialize: Initializing SDHC slot %d\n",
CONFIG_NSH_MMCSDSLOTNO);
g_nsh.sdhc = sdhc_initialize(CONFIG_NSH_MMCSDSLOTNO);
if (!g_nsh.sdhc)
{
message("nsh_archinitialize: Failed to initialize SDHC slot %d\n",
CONFIG_NSH_MMCSDSLOTNO);
return -ENODEV;
}
/* Now bind the SDHC interface to the MMC/SD driver */
message("nsh_archinitialize: Bind SDHC to the MMC/SD driver, minor=%d\n",
CONFIG_NSH_MMCSDMINOR);
ret = mmcsd_slotinitialize(CONFIG_NSH_MMCSDMINOR, g_nsh.sdhc);
if (ret != OK)
{
message("nsh_archinitialize: Failed to bind SDHC to the MMC/SD driver: %d\n", ret);
return ret;
}
message("nsh_archinitialize: Successfully bound SDHC to the MMC/SD driver\n");
/* Handle the initial card state */
kinetis_mediachange();
/* Enable CD interrupts to handle subsequent media changes */
kinetis_pinirqenable(GPIO_SD_CARDDETECT);
#endif
return OK;
}
|
