Merge branch 'master' of ssh://master.iot-yun.club:2280/raspberrypi

guowenxue

2019-08-08 d399ece9a16d2c9fe053a07912037a770f9fe1e5

 apue/2.Socket/ds18b20.c

@@ -98,5 +98,7 @@
    /* convert string value to float value */
    *temp = atof(ptr)/1000;
   
    close(fd);

    return 0;
}