Hardware Reference
In-Depth Information
do
echo Temperature and humidity is : >> $LOG
./Adafruit_DHT 11 17 | grep Temp | tr "," "\n" >> $LOG
sleep $SLEEP
done
}
case $1 in
dht11_mon)
dht11_mon
;;
ds1820_mon)
ds1820_mon
;;
dht11_log)
dht11_log
;;
ds1820_log)
ds1820_log
;;
*)
echo ------------------------------------------------------------------------------------------
--
echo
echo DHT11/DS1820 tool syntax.
echo The tool has two modes, monitor and log.
echo Monitor will print to screen and log will log to a file.
echo Script assumes the Adafruit_DHT tool is in the same directory.
echo ------------------------------------------------------------------------------------------
--
echo -- Monitor Mode --
echo Monitor mode accepts two variables the name of the sensor and the polling time in seconds.
echo To poll the ds1820 every 5 seconds the syntax would be :
echo "./sensor.sh ds1820_mon 5"
echo
echo To poll the DHT11 every 5 seconds the syntax would be :
echo "./sensor.sh dht11_mon 5"
echo ------------------------------------------------------------------------------------------
--
echo -- Log Mode --
echo Log mode accepts three variables the name of the sensor, polling time and the log file
name.
echo To log the ds1820 every 5 seconds to the syntax would be :
echo "./sensor.sh ds1820_log 5 /var/log/ds1820_temp &"
echo
echo To log the DHT11 every 5 seconds the syntax would be :
echo "./sensor.sh dht11_log 5 /var/log/dht11_log &"
echo ------------------------------------------------------------------------------------------
--
;;
esac
# END
