read.c

来自「rtlinux下实时部分和非实时部分通讯的程序fifo」· C语言 代码 · 共 23 行

#include <stdio.h>
#include <fcntl.h>

#define BUFSIZE 1024

char buf[BUFSIZE];

int main()
{
   int fd0;
   int n;
   
   if ((fd0 = open("/dev/rtf0", O_RDONLY)) < 0) {
      fprintf(stderr, "Error opening /dev/rtf0\n");
      exit(1);
   }
   printf( "Succes opening /dev/rtf0\n");
 
   n = read(fd0, buf, BUFSIZE);
   printf("read from fifo is %s!\n",buf);
}