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mendhak / waveshare-epaper-display

At-a-glance dashboard for Raspberry Pi with a Waveshare ePaper 7.5 Inch HAT. Date/Time, Weather, Alerts, Google/Outlook Calendar
https://code.mendhak.com/raspberrypi-epaper-dashboard/
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If I got follow Traceback, what should I do? #72

Open ufo20102020 opened 11 months ago

ufo20102020 commented 11 months ago

File "/home/pi/waveshare-epaper-display/.venv/bin/cairosvg", line 5, in from cairosvg.main import main File "/home/pi/waveshare-epaper-display/.venv/lib/python3.9/site-packages/cairosvg/init.py", line 26, in from . import surface # noqa isort:skip File "/home/pi/waveshare-epaper-display/.venv/lib/python3.9/site-packages/cairosvg/surface.py", line 9, in import cairocffi as cairo File "/home/pi/waveshare-epaper-display/.venv/lib/python3.9/site-packages/cairocffi/init.py", line 48, in cairo = dlopen( File "/home/pi/waveshare-epaper-display/.venv/lib/python3.9/site-packages/cairocffi/init.py", line 45, in dlopen raise OSError(error_message) # pragma: no cover OSError: no library called "cairo-2" was found no library called "cairo" was found no library called "libcairo-2" was found cannot load library 'libcairo.so.2': libcairo.so.2: cannot open shared object file: No such file or directory cannot load library 'libcairo.2.dylib': libcairo.2.dylib: cannot open shared object file: No such file or directory cannot load library 'libcairo-2.dll': libcairo-2.dll: cannot open shared object file: No such file or directory

mendhak commented 11 months ago

During the .venv/bin/pip3 install -r requirements.txt step, see if there were any errors related to installing CairoSVG. Basically that requirements.txt step should have installed Cairo. If you see that error it's indicating that the install did not happen successfully. You could try running the step again.

Is this on Raspberry Pi OS latest version?

ufo20102020 commented 11 months ago

When I rerun and I saw "Requirement already satisfied: CairoSVG==2.5.2 in ./.venv/lib/python3.9/site-packages (from -r requirements.txt (line 5)) (2.5.2)"

The OS is latest Lite version.

Thx

mendhak commented 11 months ago

Does it work if you apt install these

libcairo2 libcairo2-dev

ufo20102020 commented 11 months ago

No previous error when installed.

However, it stop process (May be) after "EXPORT To PNG". I added Debug mode and last sentence is:

2023-12-11:16:55:02 DEBUG [display.py:28] Initialize screen 2023-12-11:16:55:03 DEBUG [epd7in5b_V2.py:69] e-Paper busy

Is it a e-paper hardware problem itself or driver problem? I can run waveshare sample without problem.

mendhak commented 11 months ago

When I set LOG_LEVEL=DEBUG I get this towards the end:

---------------------------------------
EXPORT TO PNG
---------------------------------------
2023-12-11:19:05:22 DEBUG    [display.py:28] Initialize screen
2023-12-11:19:05:22 DEBUG    [epd7in5.py:77] e-Paper busy
2023-12-11:19:05:22 DEBUG    [epd7in5.py:80] e-Paper busy release
2023-12-11:19:05:22 DEBUG    [display.py:38] Read image file: screen-output.png
2023-12-11:19:05:22 DEBUG    [PngImagePlugin.py:201] STREAM b'IHDR' 16 13
2023-12-11:19:05:22 DEBUG    [PngImagePlugin.py:201] STREAM b'bKGD' 41 6
2023-12-11:19:05:22 DEBUG    [PngImagePlugin.py:738] b'bKGD' 41 6 (unknown)
2023-12-11:19:05:22 DEBUG    [PngImagePlugin.py:201] STREAM b'IDAT' 59 8192
2023-12-11:19:05:22 INFO     [display.py:40] Display image file on screen
2023-12-11:19:05:24 DEBUG    [epd7in5.py:77] e-Paper busy
2023-12-11:19:05:28 DEBUG    [epd7in5.py:80] e-Paper busy release
2023-12-11:19:05:28 DEBUG    [epd7in5.py:77] e-Paper busy
2023-12-11:19:05:28 DEBUG    [epd7in5.py:80] e-Paper busy release
2023-12-11:19:05:30 DEBUG    [epdconfig.py:111] spi end
2023-12-11:19:05:30 DEBUG    [epdconfig.py:125] close 5V, Module enters 0 power consumption ...

You'll want to make sure you've set the right epaper version in the env.sh, eg is it version 1 or 2, or is it the red one, 2B.

ufo20102020 commented 11 months ago

My e-paper is 7.5in white black red and I set 2B in env.sh already. Below is the debug message after 10 minutes run.

EXPORT TO PNG

2023-12-12:11:44:05 DEBUG [display.py:28] Initialize screen 2023-12-12:11:44:06 DEBUG [epd7in5b_V2.py:69] e-Paper busy ^C2023-12-12:11:52:06 DEBUG [display.py:53] Keyboard Interrupt - Exit 2023-12-12:11:52:06 DEBUG [epdconfig.py:79] spi end 2023-12-12:11:52:06 DEBUG [epdconfig.py:82] close 5V, Module enters 0 power consumption ...

mendhak commented 11 months ago

Hmm I'm not sure now. I don't have a red Waveshare so I can't test anything. But if you're saying the sample works, then the problem is in this repo's code.

Although it doesn't look the same, I'm wondering if there's some similarity with this issue: https://github.com/mendhak/waveshare-epaper-display/issues/70

Unlikely though, in your case it's just hanging and you had to interrupt it. Hmm

jasompi commented 10 months ago

You might want to reboot the raspberry pi. If you interrupt the the spi driver state might not clean up correctly.