Mercurial > pihelp

annotate partition.c @ 27:ce5097eacf2f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
try at adc_random() use interrupts and noise reduction for other sleep 115200, faster crystal
author Matt Johnston <matt@ucc.asn.au>
date Wed, 26 Jun 2013 23:12:37 +0800
parents 5f9a40d6991b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
19
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
2 /*
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
3 * Copyright (c) 2006-2012 by Roland Riegel <[email protected]>
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
4 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
5 * This file is free software; you can redistribute it and/or modify
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
6 * it under the terms of either the GNU General Public License version 2
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
7 * or the GNU Lesser General Public License version 2.1, both as
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
8 * published by the Free Software Foundation.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
9 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
10
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
11 #include "byteordering.h"
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
12 #include "partition.h"
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
13 #include "partition_config.h"
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
14 #include "sd-reader_config.h"
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
15
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
16 #include <string.h>
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
17
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
18 #if USE_DYNAMIC_MEMORY
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
19 #include <stdlib.h>
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
20 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
21
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
22 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
23 * \addtogroup partition Partition table support
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
24 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
25 * Support for reading partition tables and access to partitions.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
26 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
27 * @{
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
28 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
29 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
30 * \file
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
31 * Partition table implementation (license: GPLv2 or LGPLv2.1)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
32 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
33 * \author Roland Riegel
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
34 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
35
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
36 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
37 * \addtogroup partition_config Configuration of partition table support
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
38 * Preprocessor defines to configure the partition support.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
39 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
40
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
41 #if !USE_DYNAMIC_MEMORY
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
42 static struct partition_struct partition_handles[PARTITION_COUNT];
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
43 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
44
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
45 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
46 * Opens a partition.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
47 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
48 * Opens a partition by its index number and returns a partition
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
49 * handle which describes the opened partition.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
50 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
51 * \note This function does not support extended partitions.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
52 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
53 * \param[in] device_read A function pointer which is used to read from the disk.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
54 * \param[in] device_read_interval A function pointer which is used to read in constant intervals from the disk.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
55 * \param[in] device_write A function pointer which is used to write to the disk.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
56 * \param[in] device_write_interval A function pointer which is used to write a data stream to disk.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
57 * \param[in] index The index of the partition which should be opened, range 0 to 3.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
58 * A negative value is allowed as well. In this case, the partition opened is
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
59 * not checked for existance, begins at offset zero, has a length of zero
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
60 * and is of an unknown type. Use this in case you want to open the whole device
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
61 * as a single partition (e.g. for "super floppy" use).
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
62 * \returns 0 on failure, a partition descriptor on success.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
63 * \see partition_close
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
64 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
65 struct partition_struct* partition_open(device_read_t device_read, device_read_interval_t device_read_interval, device_write_t device_write, device_write_interval_t device_write_interval, int8_t index)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
66 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
67 struct partition_struct* new_partition = 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
68 uint8_t buffer[0x10];
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
69
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
70 if(!device_read || !device_read_interval || index >= 4)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
71 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
72
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
73 if(index >= 0)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
74 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
75 /* read specified partition table index */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
76 if(!device_read(0x01be + index * 0x10, buffer, sizeof(buffer)))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
77 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
78
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
79 /* abort on empty partition entry */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
80 if(buffer[4] == 0x00)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
81 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
82 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
83
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
84 /* allocate partition descriptor */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
85 #if USE_DYNAMIC_MEMORY
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
86 new_partition = malloc(sizeof(*new_partition));
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
87 if(!new_partition)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
88 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
89 #else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
90 new_partition = partition_handles;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
91 uint8_t i;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
92 for(i = 0; i < PARTITION_COUNT; ++i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
93 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
94 if(new_partition->type == PARTITION_TYPE_FREE)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
95 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
96
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
97 ++new_partition;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
98 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
99 if(i >= PARTITION_COUNT)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
100 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
101 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
102
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
103 memset(new_partition, 0, sizeof(*new_partition));
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
104
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
105 /* fill partition descriptor */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
106 new_partition->device_read = device_read;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
107 new_partition->device_read_interval = device_read_interval;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
108 new_partition->device_write = device_write;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
109 new_partition->device_write_interval = device_write_interval;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
110
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
111 if(index >= 0)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
112 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
113 new_partition->type = buffer[4];
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
114 new_partition->offset = read32(&buffer[8]);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
115 new_partition->length = read32(&buffer[12]);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
116 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
117 else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
118 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
119 new_partition->type = 0xff;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
120 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
121
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
122 return new_partition;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
123 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
124
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
125 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
126 * Closes a partition.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
127 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
128 * This function destroys a partition descriptor which was
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
129 * previously obtained from a call to partition_open().
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
130 * When this function returns, the given descriptor will be
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
131 * invalid.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
132 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
133 * \param[in] partition The partition descriptor to destroy.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
134 * \returns 0 on failure, 1 on success.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
135 * \see partition_open
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
136 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
137 uint8_t partition_close(struct partition_struct* partition)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
138 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
139 if(!partition)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
140 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
141
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
142 /* destroy partition descriptor */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
143 #if USE_DYNAMIC_MEMORY
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
144 free(partition);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
145 #else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
146 partition->type = PARTITION_TYPE_FREE;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
147 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
148
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
149 return 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
150 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
151
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
152 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
153 * @}
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
154 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
155