Hi everyone,
obviously it is a little newbie-problem, but after hours of searching and
trying I didnt get it to work.
root@beaglebone:~# uname -a
Linux beaglebone 3.8.13-bone70 #1 SMP Fri Jan 23 02:15:42 UTC 2015 armv7l
GNU/Linux
I have a little project, and I would like to run a dogm-204a-display with
the BBB over SPI and python. When I run the following line...
root@beaglebone:~# config-pin -f owncape2.bbio
overlaycape-universaln
Invalid mode: default
root@beaglebone:~# cat /sys/devices/bone_capemgr.*/slots
0: 54:PF---
1: 55:PF---
2: 56:PF---
3: 57:PF---
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN
7: ff:P-O-L Override Board Name,00A0,Override Manuf,cape-universaln
everything runs without an error. Then I'm trying to run spidev in python,
and get the following error:
root@beaglebone:~# python
Python 2.7.3 (default, Jun 21 2016, 21:00:47)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from bbio import*
PyBBIO initialized
>>> SPI1.begin()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File
"/usr/local/lib/python2.7/dist-packages/bbio/platform/beaglebone/spi.py",
line 38, in begin
self.open()
File
"/usr/local/lib/python2.7/dist-packages/bbio/platform/beaglebone/spi.py",
line 18, in open
cape_manager.load(overlay, auto_unload=False)
File
"/usr/local/lib/python2.7/dist-packages/bbio/platform/beaglebone/cape_manager.py",
line 27, in load
f.write(overlay)
IOError: [Errno 17] File exists
>>>
----------------------------------------------------------------------------------------------------------------------------------------------------------
When I try the other way:
debian@beaglebone:~$ sudo -i
root@beaglebone:~# cat /sys/devices/bone_capemgr.*/slots
0: 54:PF---
1: 55:PF---
2: 56:PF---
3: 57:PF---
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN
root@beaglebone:~# python
Python 2.7.3 (default, Jun 21 2016, 21:00:47)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from bbio import*
PyBBIO initialized
>>> SPI1.begin()
>>>
Finished PyBBIO cleanup
root@beaglebone:~# cat /sys/devices/bone_capemgr.*/slots
0: 54:PF---
1: 55:PF---
2: 56:PF---
3: 57:PF---
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN
7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-SPIDEV1
root@beaglebone:~# config-pin -f owncape2.bbio
overlaycape-universaln
bash: line 0: echo: write error: File exists
Error loading device tree overlay file: cape-universaln
root@beaglebone:~#
I get an error by loading cape-universaln. Obviously the two capes are in a
conflict with each other, but I cant find a way how to configure them.
Thank you very much for your help
--
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