ADEEPT Ultimate Sensor Kit for Raspberry Pi - Page 80

The result is as follows:
root@rasberrypi:/sys/bus/w1/devices# ls
28-00000355d573 w1_bus_master1
28-00000355d573 is an external temperature sensor device, but it may vary with every
client. It is the serial number of your DS18b20.
Step 4: Check the current temperature
$ cd 28-00000355d573
$ ls
The result is as follows:
root@rasberrypi:/sys/bus/w1/devices/28-00000355d573# ls
driver id name power subsystem uevent w1_slave
$ cat w1_slave
The result is as follows:
root@raspberrypi:/sys/bus/w1_slave/28-00000495db35# cat w1_slave
a3 01 4b 46 7f ff 0d 10 ce : crc=ce YES
a3 01 4b 46 7f ff 0d 10 ce t=28154
The second line t=28154 is current temperature value. If you want to convert it to degree
Celsius, you can divide by 1000, that is, the current temperature is 28154/1000=28.154 ℃.
For C language users:
Step 5: Edit and save the code with vim or nano.
(code path: /home/Adeept_Sensor_Kit_for_RPi_C_Code/19_ds18b20/ds18b20_2.c.c)
Step 6: Compile
$ sudo gcc ds18b20_2.c -o ds18b20 -lwiringPi
Step 7: Run
$ sudo ./ds18b20
For Python users:
Step 5: Edit and save the code with vim or nano.
(code path: /home/Adeept_Sensor_Kit_for_RPi_Python_Code/19_ds18b20.py)
Step 6: Run
$ sudo python 19_ds18b20.py