diskio.c 9.35 KB
Newer Older
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
/*
 * This file is part of the Micro Python project, http://micropython.org/
 *
 * Original template for this file comes from:
 * Low level disk I/O module skeleton for FatFs, (C)ChaN, 2013
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2013, 2014 Damien P. George
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
29
30
31

#include <stdint.h>
#include <stdio.h>
32

33
#include STM32_HAL_H
34

35
#include "py/runtime.h"
36
37
#include "lib/fatfs/ff.h"        /* FatFs lower layer API */
#include "lib/fatfs/diskio.h"        /* FatFs lower layer API */
38
#include "rtc.h"
39
40
#include "storage.h"
#include "sdcard.h"
41
#include "fsusermount.h"
42

43
const PARTITION VolToPart[] = {
44
45
    {0, 1},     // Logical drive 0 ==> Physical drive 0, 1st partition
    {1, 0},     // Logical drive 1 ==> Physical drive 1 (auto detection)
46
    {2, 0},     // Logical drive 2 ==> Physical drive 2 (auto detection)
47
48
49
50
51
52
53
54
55
    /*
    {0, 2},     // Logical drive 2 ==> Physical drive 0, 2nd partition
    {0, 3},     // Logical drive 3 ==> Physical drive 0, 3rd partition
    */
};

/* Definitions of physical drive number for each media */
#define PD_FLASH (0)
#define PD_SDCARD (1)
56
#define PD_USER (2)
57
58
59
60
61
62
63
64
65
66
67
68
69
70

/*-----------------------------------------------------------------------*/
/* Initialize a Drive                                                    */
/*-----------------------------------------------------------------------*/

DSTATUS disk_initialize (
    BYTE pdrv                /* Physical drive nmuber (0..) */
)
{
    switch (pdrv) {
        case PD_FLASH:
            storage_init();
            return 0;

71
#if MICROPY_HW_HAS_SDCARD
72
73
74
75
76
77
        case PD_SDCARD:
            if (!sdcard_power_on()) {
                return STA_NODISK;
            }
            // TODO return STA_PROTECT if SD card is read only
            return 0;
78
#endif
79
80

        case PD_USER:
81
            if (MP_STATE_PORT(fs_user_mount) == NULL) {
82
83
                return STA_NODISK;
            }
84
            if (MP_STATE_PORT(fs_user_mount)->writeblocks[0] == MP_OBJ_NULL) {
85
86
87
                return STA_PROTECT;
            }
            return 0;
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
    }

    return STA_NOINIT;
}

/*-----------------------------------------------------------------------*/
/* Get Disk Status                                                       */
/*-----------------------------------------------------------------------*/

DSTATUS disk_status (
    BYTE pdrv        /* Physical drive nmuber (0..) */
)
{
    switch (pdrv) {
        case PD_FLASH :
            // flash is ready
            return 0;

106
#if MICROPY_HW_HAS_SDCARD
107
108
109
        case PD_SDCARD:
            // TODO return STA_PROTECT if SD card is read only
            return 0;
110
#endif
111
112

        case PD_USER:
113
            if (MP_STATE_PORT(fs_user_mount) == NULL) {
114
115
                return STA_NODISK;
            }
116
            if (MP_STATE_PORT(fs_user_mount)->writeblocks[0] == MP_OBJ_NULL) {
117
118
119
                return STA_PROTECT;
            }
            return 0;
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
    }

    return STA_NOINIT;
}

/*-----------------------------------------------------------------------*/
/* Read Sector(s)                                                        */
/*-----------------------------------------------------------------------*/

DRESULT disk_read (
    BYTE pdrv,        /* Physical drive nmuber (0..) */
    BYTE *buff,        /* Data buffer to store read data */
    DWORD sector,    /* Sector address (LBA) */
    UINT count        /* Number of sectors to read (1..128) */
)
{
    switch (pdrv) {
        case PD_FLASH:
            for (int i = 0; i < count; i++) {
                if (!storage_read_block(buff + i * FLASH_BLOCK_SIZE, sector + i)) {
                    return RES_ERROR;
                }
            }
            return RES_OK;

145
#if MICROPY_HW_HAS_SDCARD
146
        case PD_SDCARD:
147
            if (sdcard_read_blocks(buff, sector, count) != 0) {
148
149
150
                return RES_ERROR;
            }
            return RES_OK;
151
#endif
152
153

        case PD_USER:
154
            if (MP_STATE_PORT(fs_user_mount) == NULL) {
155
156
157
                // nothing mounted
                return RES_ERROR;
            }
158
159
160
            MP_STATE_PORT(fs_user_mount)->readblocks[2] = MP_OBJ_NEW_SMALL_INT(sector);
            MP_STATE_PORT(fs_user_mount)->readblocks[3] = mp_obj_new_bytearray_by_ref(count * 512, buff);
            mp_call_method_n_kw(2, 0, MP_STATE_PORT(fs_user_mount)->readblocks);
161
            return RES_OK;
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
    }

    return RES_PARERR;
}

/*-----------------------------------------------------------------------*/
/* Write Sector(s)                                                       */
/*-----------------------------------------------------------------------*/

#if _USE_WRITE
DRESULT disk_write (
    BYTE pdrv,            /* Physical drive nmuber (0..) */
    const BYTE *buff,    /* Data to be written */
    DWORD sector,        /* Sector address (LBA) */
    UINT count            /* Number of sectors to write (1..128) */
)
{
    switch (pdrv) {
        case PD_FLASH:
            for (int i = 0; i < count; i++) {
                if (!storage_write_block(buff + i * FLASH_BLOCK_SIZE, sector + i)) {
                    return RES_ERROR;
                }
            }
            return RES_OK;

188
#if MICROPY_HW_HAS_SDCARD
189
        case PD_SDCARD:
190
            if (sdcard_write_blocks(buff, sector, count) != 0) {
191
192
193
                return RES_ERROR;
            }
            return RES_OK;
194
#endif
195
196

        case PD_USER:
197
            if (MP_STATE_PORT(fs_user_mount) == NULL) {
198
199
200
                // nothing mounted
                return RES_ERROR;
            }
201
            if (MP_STATE_PORT(fs_user_mount)->writeblocks[0] == MP_OBJ_NULL) {
202
203
204
                // read-only block device
                return RES_ERROR;
            }
205
206
207
            MP_STATE_PORT(fs_user_mount)->writeblocks[2] = MP_OBJ_NEW_SMALL_INT(sector);
            MP_STATE_PORT(fs_user_mount)->writeblocks[3] = mp_obj_new_bytearray_by_ref(count * 512, (void*)buff);
            mp_call_method_n_kw(2, 0, MP_STATE_PORT(fs_user_mount)->writeblocks);
208
            return RES_OK;
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
    }

    return RES_PARERR;
}
#endif


/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions                                               */
/*-----------------------------------------------------------------------*/

#if _USE_IOCTL
DRESULT disk_ioctl (
    BYTE pdrv,        /* Physical drive nmuber (0..) */
    BYTE cmd,        /* Control code */
    void *buff        /* Buffer to send/receive control data */
)
{
    switch (pdrv) {
        case PD_FLASH:
            switch (cmd) {
                case CTRL_SYNC:
                    storage_flush();
                    return RES_OK;

                case GET_BLOCK_SIZE:
                    *((DWORD*)buff) = 1; // high-level sector erase size in units of the small (512) block size
                    return RES_OK;
            }
            break;

240
#if MICROPY_HW_HAS_SDCARD
241
242
243
244
245
246
247
248
249
250
        case PD_SDCARD:
            switch (cmd) {
                case CTRL_SYNC:
                    return RES_OK;

                case GET_BLOCK_SIZE:
                    *((DWORD*)buff) = 1; // high-level sector erase size in units of the small (512) block size
                    return RES_OK;
            }
            break;
251
#endif
252
253

        case PD_USER:
254
            if (MP_STATE_PORT(fs_user_mount) == NULL) {
255
256
257
                // nothing mounted
                return RES_ERROR;
            }
258
259
            switch (cmd) {
                case CTRL_SYNC:
260
261
                    if (MP_STATE_PORT(fs_user_mount)->sync[0] != MP_OBJ_NULL) {
                        mp_call_method_n_kw(0, 0, MP_STATE_PORT(fs_user_mount)->sync);
262
263
264
265
266
267
268
269
                    }
                    return RES_OK;

                case GET_BLOCK_SIZE:
                    *((DWORD*)buff) = 1; // high-level sector erase size in units of the small (512) bl
                    return RES_OK;

                case GET_SECTOR_COUNT: {
270
                    mp_obj_t ret = mp_call_method_n_kw(0, 0, MP_STATE_PORT(fs_user_mount)->count);
271
272
273
274
275
                    *((DWORD*)buff) = mp_obj_get_int(ret);
                    return RES_OK;
                }
            }
            break;
276
277
278
279
280
281
282
283
284
285
    }

    return RES_PARERR;
}
#endif

DWORD get_fattime (
    void
)
{
286
287
288
289
290
    RTC_TimeTypeDef time;
    RTC_DateTypeDef date;
    HAL_RTC_GetTime(&RTCHandle, &time, FORMAT_BIN);
    HAL_RTC_GetDate(&RTCHandle, &date, FORMAT_BIN);
    return ((2000 + date.Year - 1980) << 25) | ((date.Month) << 21) | ((date.Date) << 16) | ((time.Hours) << 11) | ((time.Minutes) << 5) | (time.Seconds / 2);
291
}