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
|
/*-----------------------------------------------------------------------*/
/* Low level disk I/O module SKELETON for FatFs (C)ChaN, 2019 */
/*-----------------------------------------------------------------------*/
/* If a working storage control module is available, it should be */
/* attached to the FatFs via a glue function rather than modifying it. */
/* This is an example of glue functions to attach various exsisting */
/* storage control modules to the FatFs module with a defined API. */
/*-----------------------------------------------------------------------*/
#include "ff.h" /* Obtains integer types */
#include "diskio.h" /* Declarations of disk functions */
#include <eos/sdcard.h>
#define TIMEOUT 1000
#define TIMEOUT_TRIM 60000
/*-----------------------------------------------------------------------*/
/* Get Drive Status */
/*-----------------------------------------------------------------------*/
DSTATUS disk_status (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
if (pdrv || (eos_sdc_type() == 0)) return STA_NOINIT;
return 0;
}
/*-----------------------------------------------------------------------*/
/* Inidialize a Drive */
/*-----------------------------------------------------------------------*/
DSTATUS disk_initialize (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
if (pdrv || (eos_sdc_type() == 0)) return STA_NOINIT;
return 0;
}
/*-----------------------------------------------------------------------*/
/* Read Sector(s) */
/*-----------------------------------------------------------------------*/
DRESULT disk_read (
BYTE pdrv, /* Physical drive nmuber to identify the drive */
BYTE *buff, /* Data buffer to store read data */
LBA_t sector, /* Start sector in LBA */
UINT count /* Number of sectors to read */
)
{
int rv;
if (pdrv) return RES_PARERR;
if (eos_sdc_type() == 0) return RES_NOTRDY;
rv = eos_sdc_sect_read(sector, count, (uint8_t *)buff);
return rv ? RES_ERROR : RES_OK;
}
/*-----------------------------------------------------------------------*/
/* Write Sector(s) */
/*-----------------------------------------------------------------------*/
#if FF_FS_READONLY == 0
DRESULT disk_write (
BYTE pdrv, /* Physical drive nmuber to identify the drive */
const BYTE *buff, /* Data to be written */
LBA_t sector, /* Start sector in LBA */
UINT count /* Number of sectors to write */
)
{
int rv;
if (pdrv) return RES_PARERR;
if (eos_sdc_type() == 0) return RES_NOTRDY;
rv = eos_sdc_sect_write(sector, count, (uint8_t *)buff);
return rv ? RES_ERROR : RES_OK;
}
#endif
/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions */
/*-----------------------------------------------------------------------*/
DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
DRESULT res;
uint32_t ret;
int rv;
if (pdrv) return RES_PARERR;
if (eos_sdc_type() == 0) return RES_NOTRDY;
res = RES_ERROR;
switch (cmd) {
case CTRL_SYNC:
rv = eos_sdc_sync(TIMEOUT);
if (!rv) res = RES_OK;
break;
case GET_SECTOR_COUNT:
rv = eos_sdc_get_sect_count(TIMEOUT, &ret);
if (!rv) {
*(LBA_t*)buff = ret;
res = RES_OK;
}
break;
case GET_BLOCK_SIZE:
rv = eos_sdc_get_blk_size(TIMEOUT, &ret);
if (!rv) {
*(DWORD*)buff = ret;
res = RES_OK;
}
break;
case CTRL_TRIM:
rv = eos_sdc_erase(((LBA_t*)buff)[0], ((LBA_t*)buff)[1], TIMEOUT_TRIM);
if (!rv) res = RES_OK;
break;
}
return res;
}
|
