18b20.c

linux-2.6.12下的温度传感器18b20驱动程序代码

#include "stdio.h"
#include "sys/types.h"
#include "sys/ioctl.h"
#include "stdlib.h"
#include "termios.h"
#include "sys/stat.h"
#include "fcntl.h"
#include "sys/time.h"
main()
{
        int fd;
        char buf,ret;
        fd=open("/dev/18b20",O_RDWR | O_NDELAY | O_NOCTTY);
        if(fd<0)
        {
                printf("open 18b20 error\n");
                exit(1);
        }
        else
        {
                printf("success\n");
               while(1)    {
                        read(fd,&buf,1);
                        ret=buf;
                        printf("%d \n",ret);
                        sleep(1);
                }
        }
        close(fd);
}