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I have configured temperature sensor with intel edison. I am trying to read temperature sensor values using following python code

import mraa
import time
import sys
import math

tmp = mraa.Gpio(2)
tmp.dir(mraa.DIR_IN)
i=0
while i<100:
    print "Let's talk about Temperature  %s." % tmp.read()
    time. sleep(3)
    i+=1
exit()

But this code is return always 0 as reading value.

I am new to intel edison and python. So any help will be appreciating. Thanks

user3313379
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1 Answers1

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mraa is a low level skeleton library for I/O communication. In case of a basic analog sensor it will do the job, but I would recommend you to use upm instead.

import time
import pyupm_grove as grove

# Create the temperature sensor object using AIO pin 0
temp = grove.GroveTemp(0)

for i in range(0, 10):
    celsius = temp.value()
    fahrenheit = celsius * 9.0/5.0 + 32.0;
    print "%d degrees Celsius, or %d degrees Fahrenheit" \
        % (celsius, fahrenheit)
    time.sleep(1)

# Delete the temperature sensor object
del temp

If it does n't work, you may need to update the libraries 

echo "src mraa-upm http://iotdk.intel.com/repos/3.0/intelgalactic/opkg/i586" > /etc/opkg/mraa-upm.conf
opkg update
opkg upgrade libmraa0
opkg upgrade upm
nraghuk
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