File content as of revision 1:94c648931f84:

#include "mbed.h"
#include "stdint.h"
#include "DirHandle.h"
#include "SDCard.h"

SDCard Logger(p5, p6, p7, p8, "SDCard");

DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);
DigitalOut led4(LED4);
Serial Computer(USBTX, USBRX);

Timer Clock;
int main()
{
Computer.baud(9600);
Clock.start();
/*/////////////////////////////
    unsigned char wdata[5120];
    unsigned char rdata[5120];
*//////////////////////////////
float workspace[16];

    /*for (int i = 0; i < 300; i++)
    { wdata[i] = 0x03; }
    for (int i = 300; i < 550; i++)
    { wdata[i] = 0xD5; }
    for (int i = 550; i < 5120; i++)
    { wdata[i] = 0x0A; }*/

    Logger.SelectCRCMode(1);
    
    //mkdir("/SDCard/testdir", 1023);
    workspace[0] = Clock.read();
    FILE *fp = fopen("/SDCard/Log.txt", "a");
    workspace[1] = Clock.read();
    fprintf(fp, "Start");
    workspace[2] = Clock.read();
    for (int i = 0; i < 1000; i++)
    { fprintf(fp, "A"); }
    workspace[3] = Clock.read();
    fclose(fp);
    
    Computer.printf("Time 1 = %f \n", workspace[0]);
    Computer.printf("Time 2 = %f \n", workspace[1]);
    Computer.printf("Time 3 = %f \n", workspace[2]);
    Computer.printf("Time 4 = %f \n", workspace[3]);
    
    /*DIR *d = opendir("/SDCard/testdir");
    struct dirent *p;
    while ((p = readdir(d)) != NULL)
    {
          Computer.printf("%s\n", p->d_name);
    }
    closedir(d);
    remove("/SDCard/testdir/TEST.txt");*/
    //rename("/SDCard/testdir/TEST.txt", "/SDCard/testdir/TEST2.txt");
    
    /*for (int i = 0; i < 700; i++)
    { Computer.putc(rdata[i]); }
    Computer.putc(0xCC);
    Logger.Write(7, wdata);
    Logger.Read(7, rdata);
    for (int i = 0; i < 512; i++)
    {
        Computer.putc(rdata[i]);
    }*/

/////////////////////
    if (1)
    {
        while(1)
        {
            led1 = !led1;
            wait_ms(250);
            led2 = !led2;
            wait_ms(250);
            led3 = !led3;
            wait_ms(250);
            led4 = !led4;
            wait_ms(250);
        }
    }//victory dance
    else
    {
        while(1)
        {
            
            led1 = !led1;
            led2 = !led2;
            led3 = !led3;
            led4 = !led4;
            wait_ms(250);
        }
    }//failure
        //for testing
/////////////////////
}