save.c

s3c2410串口发送接收代码

#include <stdio.h>
#include <string.h>
#include <time.h>

struct t
{
  char *a; 
  char b;
  char c;
  char d;
}t1;

 main ()
{
 char str[50];
 char *k;
 char tp[14];
 time_t timep;
 struct tm *p;
 FILE *fp;
 float i=68.12;
 char order[50];
 
 sprintf(str,"%.2f",i);
 printf("str= %s\n",str);
 t1.a=str;
 printf("t1.a=%s\n",t1.a);
 t1.b=65;
 t1.c=66;
 t1.d=67;

 time(&timep);
 p= localtime(&timep);
// *tp={1900+p->tm_year};
 
 sprintf(tp,"%d%d%d%d%d%d",(1900+p->tm_year),(1+p->tm_mon),p->tm_mday,
        p->tm_hour,p->tm_min,p->tm_sec); 
 printf("tp = %s\n",tp);
 printf("%d%d%d\n",(1900+p->tm_year),(1+p->tm_mon),p->tm_mday); 
 printf("%d%d%d\n",p->tm_hour,p->tm_min,p->tm_sec); 

 fp =fopen(tp,"a+");
 fprintf(fp,"%s %d %d %d\n",t1.a,t1.b,t1.c,t1.d);
 fclose(fp);

 mount("/dev/sda1","/mnt/U","vfat",0xc0ed0000,NULL);
 sprintf(order,"cp %s /mnt/U",tp);
 system(order);
// umount("/tmp");
 return;
}