On 11/23/2013 08:24 AM, JJ wrote:
> I managed to compile BBIO and before that I installed python2 packages.
> Now there's a new problem, let's see following code
> |
>
>
> importAdafruit_BBIO.ADC asADC
>
>
> ADC.setup()
> value =ADC.read("P8_36")
> voltage =value *1.8#1.8V
> printvoltage
> |
>
> It should print the analog pin 5 value, but this error appears:
> |
> # python2 voltage.py
> Traceback(most recent call last):
> File"voltage.py",line 3,in<module>
> ADC.setup()
> RuntimeError:Unableto setup ADC system.Possiblecauses are:
> -A cape witha conflicting pin mapping isloaded
> -A device tree objectisloaded that uses the same name fora
> fragment:helper
>
> |
>
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which arch kernel are you running? You should be on the legacy one for
the beagle if you're working with capes also you should make sure you're
using dtc-overlay as opposed to dtc.
This post has some information in regards to the device tree and arch
linux arm.
http://www.adminempire.com/beaglebone-basics-for-arch-linux/
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