Comments (5)
mmh, so you are a bit sparse with the information you provide.
- Which version of the Spixels board are you using ? (typically 2016-05-07 I guess). All should work, but I had speciality versions handed out as well, so knowing the reference is good.
- I suppose, clock also works ? Otherwise you would not see any LED strip update on P2/P13.
- Do you see the same problem with the DMA or direct-multi SPI ?
- Are you using FlaschenTaschen or the Spixel library directly ?
- What kind of LED strips are you using ? WS2801, APA102 or LDP6803
- If you have a newer Pi make sure to use the spixels version newer than May or so as there was a workaround needed (version >= hzeller/spixels@900127a )
- did you disable other things that might interfere with the GPIOs ? 1 wire connection, no pigpio etc. might mess with the system (generally it is a good idea to use a minimal raspbian lite version if you have not already).
from flaschen-taschen.
Sorry about that, I'll fill you in.
- I am using the 05-07-2016 board.
- I'm not sure how to check if clock works (check dc voltage on the SCLK pin?) but I figured that the ports that are working would indicate that.
- I haven't tried using CreateDirectMultiSPI, only CreateDMAMultiSPI, due to the advice of spixels/examples/simple.cc, where it says:
// If you are using WS2801, then you need CreateDMAMultiSPI() instead, // as these strips are finicky with timings.
- I am using FlaschenTaschen with the Spixels library.
- The LED strip type I am using is WS2801.
- Affirmative, I definitely made sure I am using the latest version of both Spixels and FlaschenTaschen.
And I will go ahead and check that nothing else is messing with the gpio..
from flaschen-taschen.
Update:
I disabled i2c and "remote gpio" with the raspi-config utility, so I guess I did indeed have pigpio running.
I also installed wiringPi (which I probably need to uninstall now). Before turning off remote gpio (and with ft_server running) , wiringPi's readall command gave me the following, if it's helpful:
(edit: removed, markdown doesn't keep original formatting, making it kind of gibberish)
from flaschen-taschen.
So did it work after you simplified the installation ?
from flaschen-taschen.
Yes! Sorry for the lack of response, it's been crunch time on this project, so I've been putting lots of work in.
It may have been my installation, but I think it was actually my soldering and testing skills that were the problem, because after resoldering and testing each leg of the level shifters, I was able to get them working. Sorry to pester you with it, this project has been a comedy of errors for me.
Unrelated, but I have an Ansible project for Flaschen Taschen, to standardize pi setup and simplify code pushing. Maybe someone else browsing the issues could use it.
https://github.com/dwright213/ft-deploy
from flaschen-taschen.
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