This repository has been archived by the owner on Aug 19, 2021. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 15
/
storage-selector.cpp
59 lines (51 loc) · 2.44 KB
/
storage-selector.cpp
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
/* mbed Microcontroller Library
* Copyright (c) 2017 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "storage-selector.h"
#include "options/sd_card.h"
#include "options/heap.h"
#include "options/spi_flash.h"
#include "options/data_flash.h"
#include "options/internal_flash.h"
#include "options/fat_filesystem.h"
#include "options/little_filesystem.h"
// These two macros are a bit of magic that concatinate the symbol and
// function prefix to create a valid function name
#define _STORAGE_SELECTOR_concat(dev) _storage_selector_##dev()
#define _STORAGE_SELECTOR(dev) _STORAGE_SELECTOR_concat(dev)
#define _FILESYSTEM_SELECTOR_concat(dev, ...) _filesystem_selector_##dev(__VA_ARGS__)
#define _FILESYSTEM_SELECTOR(dev, ...) _FILESYSTEM_SELECTOR_concat(dev, __VA_ARGS__)
BlockDevice* storage_selector() {
return _STORAGE_SELECTOR(MBED_CONF_STORAGE_SELECTOR_STORAGE);
}
#ifdef MBED_CONF_STORAGE_SELECTOR_FILESYSTEM
bool _filesystem_initialized[MBED_CONF_STORAGE_SELECTOR_FILESYSTEM_INSTANCES];
FileSystem* filesystem_selector(const char* mount, BlockDevice* bd, unsigned int instance_number) {
// Filesystem numbering starts at 1, not 0
// This is meant to mirror the partition numbering present in MBRBlockDevice
MBED_ASSERT(instance_number != 0);
// Move to zero index here for internal operations
instance_number--;
// Ensure the requested filesystem instance is inside the declared range
MBED_ASSERT(instance_number < MBED_CONF_STORAGE_SELECTOR_FILESYSTEM_INSTANCES);
// Ensure the filesystem instance hasn't already been initialized
MBED_ASSERT(!_filesystem_initialized[instance_number]);
_filesystem_initialized[instance_number] = true;
return _FILESYSTEM_SELECTOR(MBED_CONF_STORAGE_SELECTOR_FILESYSTEM, mount, bd, instance_number);
}
FileSystem* filesystem_selector(const char* mount) {
return filesystem_selector(mount, storage_selector(), 1);
}
#endif //MBED_CONF_STORAGE_SELECTOR_FILESYSTEM