Olli Vanhoja / Mbed 2 deprecated mFS_sample

Examples for mFS.

Dependencies:   mbed

main.cpp@1:1d0e27aaee62, 2011-02-21 (annotated)

Committer:
HBP
Date:
Mon Feb 21 18:27:51 2011 +0000
Revision:
1:1d0e27aaee62
Parent:
0:6b88a0d4bab8
Child:
2:a608de004dcf
Rewriten sample code.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
HBP 0:6b88a0d4bab8 1 /* TODO: *Test forward function
HBP 0:6b88a0d4bab8 2 *Test multi block files (read/write & remove)
HBP 0:6b88a0d4bab8 3 */
HBP 0:6b88a0d4bab8 4
HBP 0:6b88a0d4bab8 5 #include "common.h"
HBP 0:6b88a0d4bab8 6
HBP 0:6b88a0d4bab8 7 void ls(mfs *fs);
HBP 1:1d0e27aaee62 8 void listReservedBlocks(mfs *fs);
HBP 0:6b88a0d4bab8 9
HBP 0:6b88a0d4bab8 10 int main() {
HBP 0:6b88a0d4bab8 11 char data[1];
HBP 1:1d0e27aaee62 12 char buf[44];
HBP 0:6b88a0d4bab8 13 unsigned int n;
HBP 0:6b88a0d4bab8 14
HBP 0:6b88a0d4bab8 15 mfs fs(0xA0);
HBP 0:6b88a0d4bab8 16 pc.printf("\n\r\n\r[mFS] Formatting... %u bad block headers.\n\r", fs.mkfs(1)); // Quick format EEPROM
HBP 0:6b88a0d4bab8 17
HBP 0:6b88a0d4bab8 18 // Mark block 2 as bad
HBP 0:6b88a0d4bab8 19 fs.write((char[]){'\x00','\x01','\x01'}, 2, 0, 3);
HBP 0:6b88a0d4bab8 20 pc.printf("Block 2 marked as a bad block.\n\r");
HBP 0:6b88a0d4bab8 21
HBP 0:6b88a0d4bab8 22 fs.read(data, 0, 0, 1);
HBP 0:6b88a0d4bab8 23 pc.printf("\n\rFirst byte: %X\n\r", data[0]);
HBP 0:6b88a0d4bab8 24
HBP 1:1d0e27aaee62 25 pc.printf("Create file testi.txt: %u\n\r", fs.createFile("testi.txt"));
HBP 1:1d0e27aaee62 26 pc.printf("Create file koe.txt: %u\n\r", fs.createFile("koe.txt"));
HBP 1:1d0e27aaee62 27 pc.printf("Rm file testi.txt: %u\n\r", fs.removeFile("testi.txt"));
HBP 1:1d0e27aaee62 28 pc.printf("Create file new.txt: %u\n\r", fs.createFile("new.txt"));
HBP 1:1d0e27aaee62 29
HBP 1:1d0e27aaee62 30 // Try to write multi block file new.txt
HBP 1:1d0e27aaee62 31 file *fp3 = new file(&fs, "new.txt", 1);
HBP 1:1d0e27aaee62 32 pc.printf("Trying to write multi block file new.txt...\n\r");
HBP 1:1d0e27aaee62 33 for (n=0; n < (BS-4)-20-1; n++)
HBP 1:1d0e27aaee62 34 fp3->write("b", 1);
HBP 1:1d0e27aaee62 35
HBP 0:6b88a0d4bab8 36 pc.printf("Create file a: %u\n\r", fs.createFile("testi.txt"));
HBP 0:6b88a0d4bab8 37 file *fp = new file(&fs, "testi.txt", 1);
HBP 1:1d0e27aaee62 38 pc.printf("File new.txt opened successfully\n\r");
HBP 0:6b88a0d4bab8 39 fp->write("The quick brown fox jumps over the lazy dog", 44);
HBP 0:6b88a0d4bab8 40 pc.printf("File write OK\n\r");
HBP 1:1d0e27aaee62 41 fp->flush();
HBP 1:1d0e27aaee62 42
HBP 1:1d0e27aaee62 43 pc.printf("Continue to write koe.txt...");
HBP 1:1d0e27aaee62 44 for (n=0; n < 40; n++)
HBP 1:1d0e27aaee62 45 fp3->write("u", 1);
HBP 1:1d0e27aaee62 46 pc.printf(" End\n\r");
HBP 1:1d0e27aaee62 47
HBP 1:1d0e27aaee62 48 fp3->rewind();
HBP 1:1d0e27aaee62 49 fp3->read(buf, 1);
HBP 1:1d0e27aaee62 50 pc.printf("Rewind test (koe.txt): %s\n\r", buf);
HBP 1:1d0e27aaee62 51 fp3->forward(BS-20);
HBP 1:1d0e27aaee62 52 fp3->read(buf, 1);
HBP 1:1d0e27aaee62 53 pc.printf("Forward test (koe.txt): %s\n\r", buf);
HBP 1:1d0e27aaee62 54 delete fp3;
HBP 0:6b88a0d4bab8 55
HBP 0:6b88a0d4bab8 56 pc.printf("Create file d: %u\n\r", fs.createFile("yykaa.txt"));
HBP 0:6b88a0d4bab8 57
HBP 0:6b88a0d4bab8 58 fp->rewind();
HBP 0:6b88a0d4bab8 59 fp->read(buf, 44);
HBP 1:1d0e27aaee62 60 pc.printf("\n\rRead file testi.txt: %s\n\r", buf);
HBP 0:6b88a0d4bab8 61 delete fp;
HBP 0:6b88a0d4bab8 62
HBP 0:6b88a0d4bab8 63 // Open read-only file
HBP 0:6b88a0d4bab8 64 file *fp2 = new file(&fs, "new.txt", 0); /* Keep in mind that error will *
HBP 1:1d0e27aaee62 65 * be thrown if RO file is *
HBP 0:6b88a0d4bab8 66 * opened in RW mode. So it's *
HBP 0:6b88a0d4bab8 67 * better to check flags before *
HBP 0:6b88a0d4bab8 68 * creating a handle. */
HBP 0:6b88a0d4bab8 69 // This should fail
HBP 0:6b88a0d4bab8 70 pc.printf("Trying to write RO file new.txt: %X\n\r", fp2->write("aa", 3));
HBP 0:6b88a0d4bab8 71 delete fp2;
HBP 0:6b88a0d4bab8 72
HBP 1:1d0e27aaee62 73 pc.printf("Set file flags 0x07 for file new.txt\n\r");
HBP 1:1d0e27aaee62 74 fs.setFileFlags((char[]){'\x07'}, "new.txt");
HBP 1:1d0e27aaee62 75
HBP 1:1d0e27aaee62 76 ls(&fs);
HBP 1:1d0e27aaee62 77 listReservedBlocks(&fs);
HBP 0:6b88a0d4bab8 78 }
HBP 0:6b88a0d4bab8 79
HBP 1:1d0e27aaee62 80 /** Lists files stored in file system
HBP 1:1d0e27aaee62 81 *
HBP 1:1d0e27aaee62 82 * @param *fs Gets handle to file system in use.
HBP 1:1d0e27aaee62 83 */
HBP 0:6b88a0d4bab8 84 void ls(mfs *fs) {
HBP 0:6b88a0d4bab8 85 unsigned int n, fileCount=0;
HBP 0:6b88a0d4bab8 86 char name[20];
HBP 1:1d0e27aaee62 87 char flags[1];
HBP 0:6b88a0d4bab8 88
HBP 0:6b88a0d4bab8 89 pc.printf("\n\rls:\n\rName:\t\t\tBlock:\tFlags:\n\r");
HBP 0:6b88a0d4bab8 90 n=0;
HBP 0:6b88a0d4bab8 91 while (1)
HBP 0:6b88a0d4bab8 92 {
HBP 0:6b88a0d4bab8 93 n = fs->findNextFile(n, name);
HBP 0:6b88a0d4bab8 94 if (n < 0xFFFF)
HBP 0:6b88a0d4bab8 95 {
HBP 1:1d0e27aaee62 96 fs->getFileFlags(flags, name);
HBP 1:1d0e27aaee62 97 if ((flags[0] & 0x2) != 0)
HBP 1:1d0e27aaee62 98 goto next; // Skip hidden file
HBP 1:1d0e27aaee62 99
HBP 0:6b88a0d4bab8 100 pc.printf("%s", name);
HBP 0:6b88a0d4bab8 101 char len = strlen(name);
HBP 0:6b88a0d4bab8 102 for (char i=0; i < 7-ceil((float)len/2); i++)
HBP 0:6b88a0d4bab8 103 pc.printf("\t");
HBP 0:6b88a0d4bab8 104 pc.printf("%X\t%X\n\r", n, flags[0]);
HBP 1:1d0e27aaee62 105 } else break; // Reach end of fs
HBP 1:1d0e27aaee62 106 next:
HBP 0:6b88a0d4bab8 107 n++;
HBP 0:6b88a0d4bab8 108 fileCount++;
HBP 0:6b88a0d4bab8 109 }
HBP 0:6b88a0d4bab8 110
HBP 0:6b88a0d4bab8 111 // Get number of free blocks
HBP 0:6b88a0d4bab8 112 char iFreeBlocks = fs->free();
HBP 0:6b88a0d4bab8 113 // Calculate amount of space used
HBP 0:6b88a0d4bab8 114 unsigned int iSpaceUsed = VOL_SIZE - (iFreeBlocks*BS);
HBP 0:6b88a0d4bab8 115 // Summary
HBP 1:1d0e27aaee62 116 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 117 }
HBP 0:6b88a0d4bab8 118
HBP 1:1d0e27aaee62 119 /** Lists blocks marked as used
HBP 1:1d0e27aaee62 120 *
HBP 1:1d0e27aaee62 121 * @param *fs Gets handle to file system in use.
HBP 1:1d0e27aaee62 122 */
HBP 1:1d0e27aaee62 123 void listReservedBlocks(mfs *fs)
HBP 0:6b88a0d4bab8 124 {
HBP 0:6b88a0d4bab8 125 char data[3];
HBP 0:6b88a0d4bab8 126
HBP 1:1d0e27aaee62 127 pc.printf("\n\rReserved blocks:\n\r");
HBP 0:6b88a0d4bab8 128 for (unsigned int n=0; n < BC; n++)
HBP 0:6b88a0d4bab8 129 {
HBP 0:6b88a0d4bab8 130 fs->read(data, n, 0, 3);
HBP 0:6b88a0d4bab8 131 if (data[0] != 4)
HBP 0:6b88a0d4bab8 132 pc.printf("b%XB0: %X, %X, %X\n\r", n, data[0], data[1], data[2]);
HBP 0:6b88a0d4bab8 133 }
HBP 0:6b88a0d4bab8 134 }