update mqttd, test SHT2X support ok

Guo Wenxue

2019-07-31 bb08fc172f25c751902b9a849fc5188f91d362f7

 modules/c/ds18b20.c

@@ -32,7 +32,7 @@
                return 1;
        }

        printf("DS19B20 get temperature: %f ℃\n", temp);
        printf("DS18B20 get temperature: %f ℃\n", temp);
        return 0;
}