File content as of revision 2:51d1db448212:

#include "mbed.h"
#include "SDFileSystem.h"

Ticker timer; 
SDFileSystem sd(p5, p6, p7, p8, "sd"); // the pinout on the mbed Cool Components workshop board
Serial gps_line(p28, p27);       // tx, rx
Serial pc(USBTX, USBRX);    // tx, rx
DigitalOut myled1(LED1);
DigitalOut myled2(LED2);
DigitalOut myled3(LED3);
DigitalOut myled4(LED4);
char gpsc2[200];

int a,b;
int ido;
int old_ido,old_kei;
FILE *gpsc;

void kakiko()
{
    
    b=0;
    mkdir("/sd/gps1", 0777);//*************************************************************************
    myled1 = myled2 = myled3 = myled4 = 1;
    FILE *gps_date = fopen("/sd/gps1/gps1.txt", "a");
    
    if(gps_date == NULL) {
        error("Could not open file for write\n");
        }
    while(b!=50){
      fputc(gps_line.getc(),gps_date);
       b++; }
    fclose(gps_date);//****************************************************************************************
    
    myled1 = myled2 = myled3 = myled4 = 0;
    printf("Goodbye World!\n");
}
 
int main() {
   
    gps_line.baud(9600);
    timer.attach(&kakiko,2.0);
    int i=0;
    printf("Hello World!\n");
    
       for(a=30;a<200;a++)
       {gpsc2[a]= gps_line.getc();
        pc.printf("%c",gpsc2[a]);
        
        if(gpsc2[a-21]=='P')
         {if(gpsc2[a-20]=='G')
          {if(gpsc2[a-19]=='G')
           {ido=gpsc2[a-4]*1000+gpsc2[a-3]*100+gpsc2[a-1]*10+gpsc2[a]*1;
            pc.printf("cc%dcc",ido);
            
            mkdir("/sd/ido1", 0777);//*************************************************************************
            myled1 = myled2 = myled3 = myled4 = 1;
            FILE *idof = fopen("/sd/ido1/ido1.txt", "a");
    
            if(idof == NULL) {
              error("Could not open file for write\n");
             }
    
            fprintf(idof,"%d\n",ido);
      
            fclose(idof);//****************************************************************************************
            myled1 = myled2 = myled3 = myled4 = 0;
             }}} 
        if(a>=50)
         {a=25;}
        old_ido=ido;
        
        
       }//for
       
}