Olli Vanhoja / Mbed 2 deprecated mFS_sample

Examples for mFS.

Dependencies:   mbed

main.cpp@3:fa4e0fea475b, 2011-02-24 (annotated)

Committer:
HBP
Date:
Thu Feb 24 00:02:58 2011 +0000
Revision:
3:fa4e0fea475b
Parent:
2:a608de004dcf 
-16bit block number version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
HBP 0:6b88a0d4bab8 1 #include "common.h"
HBP 0:6b88a0d4bab8 2
HBP 0:6b88a0d4bab8 3 void ls(mfs *fs);
HBP 1:1d0e27aaee62 4 void listReservedBlocks(mfs *fs);
HBP 2:a608de004dcf 5 void printStatus(char status);
HBP 0:6b88a0d4bab8 6
HBP 0:6b88a0d4bab8 7 int main() {
HBP 0:6b88a0d4bab8 8 char data[1];
HBP 1:1d0e27aaee62 9 char buf[44];
HBP 0:6b88a0d4bab8 10 unsigned int n;
HBP 0:6b88a0d4bab8 11
HBP 0:6b88a0d4bab8 12 mfs fs(0xA0);
HBP 2:a608de004dcf 13 pc.printf("\n\r\n\r[mFS] Formatting... %u bad block headers.\n\r", fs.mkfs(true)); // Quick format EEPROM
HBP 0:6b88a0d4bab8 14
HBP 0:6b88a0d4bab8 15 // Mark block 2 as bad
HBP 3:fa4e0fea475b 16 fs.write((char[]){'\x00','\x00','\x00', '\x00', '\x00'}, 2, 0, 3);
HBP 0:6b88a0d4bab8 17 pc.printf("Block 2 marked as a bad block.\n\r");
HBP 0:6b88a0d4bab8 18
HBP 0:6b88a0d4bab8 19 fs.read(data, 0, 0, 1);
HBP 0:6b88a0d4bab8 20 pc.printf("\n\rFirst byte: %X\n\r", data[0]);
HBP 0:6b88a0d4bab8 21
HBP 2:a608de004dcf 22 pc.printf("Create file testi.txt: "); printStatus(fs.createFile("testi.txt"));
HBP 2:a608de004dcf 23 pc.printf("Create file testi.txt: "); printStatus(fs.createFile("testi.txt"));
HBP 2:a608de004dcf 24 pc.printf("Create file koe.txt: "); printStatus(fs.createFile("koe.txt"));
HBP 2:a608de004dcf 25 pc.printf("Rm file testi.txt: "); printStatus(fs.removeFile("testi.txt"));
HBP 2:a608de004dcf 26 pc.printf("Create file new.txt: "); printStatus(fs.createFile("new.txt"));
HBP 1:1d0e27aaee62 27
HBP 1:1d0e27aaee62 28 // Try to write multi block file new.txt
HBP 3:fa4e0fea475b 29 file *fp3 = new file(&fs, "new.txt", AWRITE);
HBP 3:fa4e0fea475b 30 pc.printf("Trying to write multi-block file new.txt...\n\r");
HBP 3:fa4e0fea475b 31 for (n=0; n < BS; n++)
HBP 3:fa4e0fea475b 32 fp3->write("F", 1);
HBP 1:1d0e27aaee62 33
HBP 2:a608de004dcf 34 pc.printf("Create file testi.txt: "); printStatus(fs.createFile("testi.txt"));
HBP 3:fa4e0fea475b 35 file *fp = new file(&fs, "testi.txt", AWRITE);
HBP 1:1d0e27aaee62 36 pc.printf("File new.txt opened successfully\n\r");
HBP 0:6b88a0d4bab8 37 fp->write("The quick brown fox jumps over the lazy dog", 44);
HBP 0:6b88a0d4bab8 38 pc.printf("File write OK\n\r");
HBP 1:1d0e27aaee62 39 fp->flush();
HBP 1:1d0e27aaee62 40
HBP 2:a608de004dcf 41 pc.printf("Continue to write new.txt...");
HBP 3:fa4e0fea475b 42 for (n=0; n < 400; n++)
HBP 3:fa4e0fea475b 43 fp3->write("S", 1);
HBP 1:1d0e27aaee62 44 pc.printf(" End\n\r");
HBP 1:1d0e27aaee62 45
HBP 1:1d0e27aaee62 46 fp3->rewind();
HBP 3:fa4e0fea475b 47 fp3->read(buf, 20);
HBP 2:a608de004dcf 48 pc.printf("Rewind test (new.txt): %s\n\r", buf);
HBP 3:fa4e0fea475b 49 pc.printf("Forwarding new.txt: "); printStatus(fp3->forward(BS-25-22));
HBP 3:fa4e0fea475b 50 fp3->read(buf, 43);
HBP 2:a608de004dcf 51 pc.printf("Forward test (new.txt): %s\n\r", buf);
HBP 1:1d0e27aaee62 52 delete fp3;
HBP 0:6b88a0d4bab8 53
HBP 3:fa4e0fea475b 54 pc.printf("Create file yykaa.txt: "); printStatus(fs.createFile("yykaa.txt"));
HBP 0:6b88a0d4bab8 55
HBP 0:6b88a0d4bab8 56 fp->rewind();
HBP 0:6b88a0d4bab8 57 fp->read(buf, 44);
HBP 1:1d0e27aaee62 58 pc.printf("\n\rRead file testi.txt: %s\n\r", buf);
HBP 0:6b88a0d4bab8 59 delete fp;
HBP 0:6b88a0d4bab8 60
HBP 0:6b88a0d4bab8 61 // Open read-only file
HBP 3:fa4e0fea475b 62 file *fp2 = new file(&fs, "koe.txt", RO); /* Keep in mind that error will *
HBP 1:1d0e27aaee62 63 * be thrown if RO file is *
HBP 0:6b88a0d4bab8 64 * opened in RW mode. So it's *
HBP 0:6b88a0d4bab8 65 * better to check flags before *
HBP 0:6b88a0d4bab8 66 * creating a handle. */
HBP 0:6b88a0d4bab8 67 // This should fail
HBP 2:a608de004dcf 68 pc.printf("Trying to write RO file koe.txt: "); printStatus(fp2->write("aa", 3));
HBP 0:6b88a0d4bab8 69 delete fp2;
HBP 0:6b88a0d4bab8 70
HBP 1:1d0e27aaee62 71 pc.printf("Set file flags 0x07 for file new.txt\n\r");
HBP 1:1d0e27aaee62 72 fs.setFileFlags((char[]){'\x07'}, "new.txt");
HBP 1:1d0e27aaee62 73
HBP 2:a608de004dcf 74 pc.printf("Rename yykaa.xt => nameChanged.txt...\n\r");
HBP 2:a608de004dcf 75 fs.renameFile("yykaa.txt", "nameChanged.txt");
HBP 2:a608de004dcf 76
HBP 1:1d0e27aaee62 77 ls(&fs);
HBP 1:1d0e27aaee62 78 listReservedBlocks(&fs);
HBP 3:fa4e0fea475b 79
HBP 3:fa4e0fea475b 80 fs.setFileFlags(0, "new.txt");
HBP 3:fa4e0fea475b 81 file *fp4 = new file(&fs, "new.txt", DWRITE);
HBP 3:fa4e0fea475b 82 pc.printf("Trying destructive write with new.txt... ");
HBP 3:fa4e0fea475b 83 for (n=0; n < 3*(BS-25); n++)
HBP 3:fa4e0fea475b 84 fp3->write("*", 1);
HBP 3:fa4e0fea475b 85 pc.printf("End\n\r");
HBP 3:fa4e0fea475b 86 listReservedBlocks(&fs);
HBP 3:fa4e0fea475b 87
HBP 0:6b88a0d4bab8 88 }
HBP 0:6b88a0d4bab8 89
HBP 1:1d0e27aaee62 90 /** Lists files stored in file system
HBP 1:1d0e27aaee62 91 *
HBP 1:1d0e27aaee62 92 * @param *fs Gets handle to file system in use.
HBP 1:1d0e27aaee62 93 */
HBP 0:6b88a0d4bab8 94 void ls(mfs *fs) {
HBP 0:6b88a0d4bab8 95 unsigned int n, fileCount=0;
HBP 0:6b88a0d4bab8 96 char name[20];
HBP 1:1d0e27aaee62 97 char flags[1];
HBP 0:6b88a0d4bab8 98
HBP 2:a608de004dcf 99 pc.printf("\n\rls:\n\rName:\t\tBlock:\tFlags:\n\r");
HBP 0:6b88a0d4bab8 100 n=0;
HBP 0:6b88a0d4bab8 101 while (1)
HBP 0:6b88a0d4bab8 102 {
HBP 2:a608de004dcf 103 if (fs->findNextFile(n, name, &n) == 0 )
HBP 0:6b88a0d4bab8 104 {
HBP 1:1d0e27aaee62 105 fs->getFileFlags(flags, name);
HBP 1:1d0e27aaee62 106 if ((flags[0] & 0x2) != 0)
HBP 1:1d0e27aaee62 107 goto next; // Skip hidden file
HBP 1:1d0e27aaee62 108
HBP 0:6b88a0d4bab8 109 pc.printf("%s", name);
HBP 0:6b88a0d4bab8 110 char len = strlen(name);
HBP 2:a608de004dcf 111 for (char i=0; i < 20-len; i++)
HBP 2:a608de004dcf 112 pc.printf(" ");
HBP 0:6b88a0d4bab8 113 pc.printf("%X\t%X\n\r", n, flags[0]);
HBP 1:1d0e27aaee62 114 } else break; // Reach end of fs
HBP 3:fa4e0fea475b 115 fileCount++;
HBP 1:1d0e27aaee62 116 next:
HBP 0:6b88a0d4bab8 117 n++;
HBP 0:6b88a0d4bab8 118 }
HBP 0:6b88a0d4bab8 119
HBP 0:6b88a0d4bab8 120 // Get number of free blocks
HBP 0:6b88a0d4bab8 121 char iFreeBlocks = fs->free();
HBP 0:6b88a0d4bab8 122 // Calculate amount of space used
HBP 0:6b88a0d4bab8 123 unsigned int iSpaceUsed = VOL_SIZE - (iFreeBlocks*BS);
HBP 0:6b88a0d4bab8 124 // Summary
HBP 3:fa4e0fea475b 125 pc.printf("%u files total\n\r%u/%u kB space used, %u blocks free\n\r\n\r", fileCount, iSpaceUsed/1024, VOL_SIZE/1024, iFreeBlocks);
HBP 0:6b88a0d4bab8 126 }
HBP 0:6b88a0d4bab8 127
HBP 1:1d0e27aaee62 128 /** Lists blocks marked as used
HBP 1:1d0e27aaee62 129 *
HBP 1:1d0e27aaee62 130 * @param *fs Gets handle to file system in use.
HBP 1:1d0e27aaee62 131 */
HBP 1:1d0e27aaee62 132 void listReservedBlocks(mfs *fs)
HBP 0:6b88a0d4bab8 133 {
HBP 3:fa4e0fea475b 134 char data[5];
HBP 0:6b88a0d4bab8 135
HBP 3:fa4e0fea475b 136 pc.printf("\n\rReserved blocks and list of related links:\n\r");
HBP 0:6b88a0d4bab8 137 for (unsigned int n=0; n < BC; n++)
HBP 0:6b88a0d4bab8 138 {
HBP 3:fa4e0fea475b 139 fs->read(data, n, 0, 5);
HBP 0:6b88a0d4bab8 140 if (data[0] != 4)
HBP 3:fa4e0fea475b 141 pc.printf("b%XB0: %X, %X, %X\n\r", n, data[0], data[1]<<8|data[2], data[3]<<8|data[4]);
HBP 0:6b88a0d4bab8 142 }
HBP 2:a608de004dcf 143 }
HBP 2:a608de004dcf 144
HBP 2:a608de004dcf 145 void printStatus(char status)
HBP 2:a608de004dcf 146 {
HBP 2:a608de004dcf 147 if (status == 0)
HBP 2:a608de004dcf 148 pc.printf("OK\n\r");
HBP 2:a608de004dcf 149 else
HBP 2:a608de004dcf 150 pc.printf("Failed: %u\n\r", status);
HBP 0:6b88a0d4bab8 151 }