I am trying to use the Adafruit BBIO library on a BBB with Ubuntu
13.10 installed. It's for reading ADC values and sending some digital
data.
A trivial program as follows shows the error:-
#!/usr/bin/python
import os
import sys
import Adafruit_BBIO.ADC as ADC
#
#
# Read A2D using Adafruit libraries
#
ADC.setup()
As soon as it executes the ADC.setup() call I get the following error:-
chris@beaglebone$ bt.py
Traceback (most recent call last):
File "/home/chris/bin/bt.py", line 9, in <module>
ADC.setup()
RuntimeError: Unable to setup ADC system. Possible causes are:
- A cape with a conflicting pin mapping is loaded
- A device tree object is loaded that uses the same name for a fragment:
helper
This worked OK on the Angstrom distribution but for lots of reasons I
want to use Ubuntu.
So, what's wrong, I'm not running anything at all before running the
above. There are no capes installed. I get the above error if I
simply power up the system and run the above code. Is it just some sort of
name conflict with more than one thing called 'helper' or am I
misunderstanding what it's telling me?
--
Chris Green
ยท
--
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