ECE 4180 Labs / Mbed 2 deprecated 4180_Lab2_SD

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Dependencies:   SDFileSystem mbed

Fork of 4180_Lab2_SD by Jeremy Cai

main.cpp@1:d2b9f2f42fe5, 2016-09-25 (annotated)

Committer:
jeremycai3721
Date:
Sun Sep 25 19:03:25 2016 +0000
Revision:
1:d2b9f2f42fe5
Parent:
0:bdbd3d6fc5d5 
CodeShare

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:bdbd3d6fc5d5 1 #include "mbed.h"
mbed_official 0:bdbd3d6fc5d5 2 #include "SDFileSystem.h"
mbed_official 0:bdbd3d6fc5d5 3
mbed_official 0:bdbd3d6fc5d5 4 SDFileSystem sd(p5, p6, p7, p8, "sd"); // the pinout on the mbed Cool Components workshop board
mbed_official 0:bdbd3d6fc5d5 5
mbed_official 0:bdbd3d6fc5d5 6 int main() {
mbed_official 0:bdbd3d6fc5d5 7 printf("Hello World!\n");
mbed_official 0:bdbd3d6fc5d5 8
mbed_official 0:bdbd3d6fc5d5 9 mkdir("/sd/mydir", 0777);
mbed_official 0:bdbd3d6fc5d5 10
mbed_official 0:bdbd3d6fc5d5 11 FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");
mbed_official 0:bdbd3d6fc5d5 12 if(fp == NULL) {
mbed_official 0:bdbd3d6fc5d5 13 error("Could not open file for write\n");
mbed_official 0:bdbd3d6fc5d5 14 }
mbed_official 0:bdbd3d6fc5d5 15 fprintf(fp, "Hello fun SD Card World!");
mbed_official 0:bdbd3d6fc5d5 16 fclose(fp);
mbed_official 0:bdbd3d6fc5d5 17
mbed_official 0:bdbd3d6fc5d5 18 printf("Goodbye World!\n");
jeremycai3721 1:d2b9f2f42fe5 19
jeremycai3721 1:d2b9f2f42fe5 20
jeremycai3721 1:d2b9f2f42fe5 21 // example of reading a file one byte at a time
jeremycai3721 1:d2b9f2f42fe5 22 // and display it in hex format on the terminal
jeremycai3721 1:d2b9f2f42fe5 23
jeremycai3721 1:d2b9f2f42fe5 24 unsigned char c; // a single byte buffer
jeremycai3721 1:d2b9f2f42fe5 25
jeremycai3721 1:d2b9f2f42fe5 26 fp = fopen("/sd/mydir/sdtest.txt", "r"); // open the file in 'read' mode
jeremycai3721 1:d2b9f2f42fe5 27
jeremycai3721 1:d2b9f2f42fe5 28 while (!feof(fp)){ // while not end of file
jeremycai3721 1:d2b9f2f42fe5 29 c=fgetc(fp); // get a character/byte from the file
jeremycai3721 1:d2b9f2f42fe5 30 printf("%c",c); //
jeremycai3721 1:d2b9f2f42fe5 31 }
jeremycai3721 1:d2b9f2f42fe5 32 printf("\n\r");
jeremycai3721 1:d2b9f2f42fe5 33 fclose(fp); // close the file
jeremycai3721 1:d2b9f2f42fe5 34
mbed_official 0:bdbd3d6fc5d5 35 }