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Dependencies: FatFileSystem mbed
Fork of 4180_Lab2_USB by
main.cpp@1:fca955be2a5b, 2016-09-25 (annotated)
- Committer:
- jeremycai3721
- Date:
- Sun Sep 25 19:04:39 2016 +0000
- Revision:
- 1:fca955be2a5b
- Parent:
- 0:4e756c4c88a7
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Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
chris | 0:4e756c4c88a7 | 1 | #include "mbed.h" |
chris | 0:4e756c4c88a7 | 2 | #include "MSCFileSystem.h" |
chris | 0:4e756c4c88a7 | 3 | |
chris | 0:4e756c4c88a7 | 4 | MSCFileSystem fs ("fs"); |
chris | 0:4e756c4c88a7 | 5 | |
chris | 0:4e756c4c88a7 | 6 | int main () { |
chris | 0:4e756c4c88a7 | 7 | |
chris | 0:4e756c4c88a7 | 8 | FILE *fp = fopen("/fs/hello.txt","w"); |
jeremycai3721 | 1:fca955be2a5b | 9 | if ( fp == NULL ) |
jeremycai3721 | 1:fca955be2a5b | 10 | { |
jeremycai3721 | 1:fca955be2a5b | 11 | error("Could not open file for write\n"); |
jeremycai3721 | 1:fca955be2a5b | 12 | } |
jeremycai3721 | 1:fca955be2a5b | 13 | fprintf(fp, "Hello mass storage!\n\r"); |
chris | 0:4e756c4c88a7 | 14 | fclose (fp); |
jeremycai3721 | 1:fca955be2a5b | 15 | printf("Goodbye World!\n\r"); |
jeremycai3721 | 1:fca955be2a5b | 16 | |
jeremycai3721 | 1:fca955be2a5b | 17 | |
jeremycai3721 | 1:fca955be2a5b | 18 | // example of reading a file one byte at a time |
jeremycai3721 | 1:fca955be2a5b | 19 | // // and display it in hex format on the terminal |
chris | 0:4e756c4c88a7 | 20 | |
jeremycai3721 | 1:fca955be2a5b | 21 | unsigned char c; // a single byte buffer |
jeremycai3721 | 1:fca955be2a5b | 22 | |
jeremycai3721 | 1:fca955be2a5b | 23 | fp = fopen("/fs/hello.txt", "r"); // open the file in 'read' mode |
jeremycai3721 | 1:fca955be2a5b | 24 | |
jeremycai3721 | 1:fca955be2a5b | 25 | while (!feof(fp)) { // while not end of file |
jeremycai3721 | 1:fca955be2a5b | 26 | c=fgetc(fp); // get a character/byte from the file |
jeremycai3721 | 1:fca955be2a5b | 27 | printf("%c\r",c); // |
jeremycai3721 | 1:fca955be2a5b | 28 | } |
jeremycai3721 | 1:fca955be2a5b | 29 | printf("\n\r"); |
jeremycai3721 | 1:fca955be2a5b | 30 | fclose(fp); // close the file |
chris | 0:4e756c4c88a7 | 31 | } |