Beaglebone-Black: Cannot install the Adafruit-BBIO in Arch

[JJ]

 pip install Adafruit_BBIO

Downloading/unpacking Adafruit-BBIO

  Downloading Adafruit_BBIO-0.0.18.tar.gz

  Running setup.py egg_info for package Adafruit-BBIO

    Traceback (most recent call last):

      File "<string>", line 16, in <module>

      File "/tmp/pip_build_root/Adafruit-BBIO/setup.py", line 7

        print "py_compile module missing; installing to %spy_compile.py" %\

                                                                       ^

    SyntaxError: invalid syntax

    Complete output from command python setup.py egg_info:

    Traceback (most recent call last):

  File "<string>", line 16, in <module>

  File "/tmp/pip_build_root/Adafruit-BBIO/setup.py", line 7

    print "py_compile module missing; installing to %spy_compile.py" %\

                                                                   ^

SyntaxError: invalid syntax

----------------------------------------

Cleaning up...

Command python setup.py egg_info failed with error code 1 in /tmp/pip_build_root/Adafruit-BBIO

Storing complete log in /root/.pip/pip.log

That's the problem, py_compile module is missing.

OS is the latest Arch-Arm.

[Don deJuan]

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Well first off if you read the github change that make it clear it is possible for breakage to happen if you use it as development continues.
"
PLEASE NOTE: This library may have breaking changes as development continues. Please read the changelog anytime you update the library!

The PWM Duty Cycle range was reversed in 0.0.15 from 100(off)-0(on) to 0(off)-100(on). Please update your code accordingly.
"

Second did you install python-pip and python-setuptools or did you install python2-pip and python2-setuptools

I just got done compiling around 30 something python and python2 packages on Arch and have not had a single issues relating to a broken python or python2 install.

My guess is you need the python2 related packages. If it is a broken python install I would try reinstalling python and python2 test again. If still borked try creating a new image test again, if borked again report a bunch to archlinuxarm . My guess is there is nothing wrong with the python* packages.

[Don deJuan]

On 11/23/2013 06:31 AM, JJ wrote:

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I forgot to mention that you really should be creating a PKGBUILD for installing this as well.

[JJ]

I managed to compile BBIO and before that I installed python2 packages.

Now there's a new problem, let's see following code

import Adafruit_BBIO.ADC as ADC


ADC.setup()
value = ADC.read("P8_36")
voltage = value * 1.8 #1.8V
print voltage

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: 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
 

[Don deJuan]

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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/

[JJ]

Thank you! I used the latest 3.12 kernel and installed the legacy version. Now my program works fine!

By the way, why doesn't the newest kernel support the capes?

[Don deJuan]

3.12 does not have full cape support as of yet. 3.8 gives you all the cape stuff, 3.12 is better with USB and a few other things right now.

[William Hermans]

3.12 is just barely ( a month or so ) out of RC status. Just need someone to port the code and device tree files over from 3.8.  Which probably is harder than I made it sound. Not really sure I have not looked at the code on either kernel version.

[david germain]

this worked for me 

1. git clone git://github.com/adafruit/adafruit-beaglebone-io-python.git
2. #set the date and time
3. /usr/bin/ntpdate -b -s -u pool.ntp.org
4. #install dependency
5. opkg update && opkg install python-distutils python-smbus
6. cd adafruit-beaglebone-io-python
7. python setup.py install
8.