main.cpp

00001 #include "mbed.h"
00002 #include "SDFileSystem.h"
00003  
00004 
00005 //SDFileSystem sd(mosi, miso, sclk, cs, "sd");
00006 
00007 SDFileSystem sd(D11, D12, D13, D10, "sd"); // the pinout on the mbed Cool Components workshop board
00008 
00009 /* on the Break out Module
00010     G   = GND           goes to         GND 0V
00011     DO  = Digital Out   goes to MISO    D12
00012     CLK = Clock         goes to SCLK    D13
00013     DI  = Digital In    goes to MOSI    D11
00014     CS  = Chip Select   goes to CS      D10
00015     +   = +ve supply    goes to         3V3 Check! Slider switch on SD side is set to 3V3
00016 */
00017 //    FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");//Open device "sd" with a folder "mdir" of root on the SD card
00018 
00019 
00020 char myStr[128];
00021 
00022 int main() {
00023     printf("Start to write!\n");   
00024  
00025     mkdir("/sd/mydir", 0777);
00026     
00027     FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");
00028     if(fp == NULL) {
00029         error("Could not open file for write\n");
00030     }
00031     fprintf(fp, "Hello World!");
00032     fprintf(fp, "This is a second line");
00033     fprintf(fp, "and now a third line");
00034     fclose(fp); 
00035  
00036     printf("Finished writing and closed file\n");
00037     
00038     FILE *fp1 = fopen("/sd/mydir/sdtest.txt", "r");
00039     //fscanf(fp1, "%s", myStr);
00040     fgets(myStr, 12, fp1);
00041     printf("\t%s\n\r",myStr);
00042     fclose(fp1); 
00043 }