Greetings,
I am running a last step of dht-humidity-sensing-on-raspberry-pi-with-gdocs-logging.pdf. The last step requires me to run python script of the Adafruit_DHT_googledocs.ex.py . After typing python Adafruit_DHT_googledocs.ex.py I received a following error message.
python Adafruit_DHT_googledocs.ex.py
bcm2835_init: Unable to open /dev/mem: Permission denied
Traceback (most recent call last):
File "Adafruit_DHT_googledocs.ex.py", line 44, in <module>
output = subprocess.check_output(["./Adafruit_DHT", "2302", "4"]);
File "/usr/lib/python2.7/subprocess.py", line 544, in check_output
raise CalledProcessError(retcode, cmd, output=output)
subprocess.CalledProcessError: Command '['./Adafruit_DHT', '2302', '4']' returned non-zero exit status 1
I am new to python. I know that my device is working and communicate with the rpi . The last step is to communicate dht22 with rpi and google spreadsheet.
I assume that python script has error or some other process is missing something to do with bc2835. Another issue could be directories?
Any ideas are appreciated.
DHT Humidity sensor tutorial
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Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/
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- adafruit_support_rick
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Re: DHT Humidity sensor tutorial
Did you run the script with sudo?
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- Joined: Sun Feb 17, 2013 2:32 pm
Re: DHT Humidity sensor tutorial
Nope, I'll check it.
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- Posts: 6
- Joined: Sun Feb 17, 2013 2:32 pm
Re: DHT Humidity sensor tutorial
Yes, it works....It funny that every command has to start with sudo....
Thank you for your support.
Thank you for your support.
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: DHT Humidity sensor tutorial
Don't know that it's every command, but in that step you're writing to the protected kernel area of the file system.
Forum rules
Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/
Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/