Error running "run.sh"

[ghost]

I'd like to built a screen displaying current or future meetings, i don't need the PiHole or Weather integration.
I followed your instructions, apart from installing python-imaging (which was not available), i installed "python-pil" (apt recommended that).

In Google, i enabled the Google Calendar API and instead for "Desktop App" i went for "TVs and limited input devices" (does that make a difference? Selecting desktop app did not work for me).
After using 'curl' for the localhost-URL, this is was the script outputs:

ickle is stale, calling the Calendar API
(calendar entry of the day)
(next calendar entry)
Traceback (most recent call last):
File "screen-calendar-get.py", line 80, in
output = codecs.open(template , 'r', encoding='utf-8').read()
File "/usr/lib/python3.7/codecs.py", line 898, in open
file = builtins.open(filename, mode, buffering)
FileNotFoundError: [Errno 2] No such file or directory: 'screen-output-weather.svg'

Did i miss something?
I have a raspberry pi zero WH, the Display you've mentioned and accessories.

[ghost]

Weid. I cannot run examples:

~/waveshare-epaper-sample/RaspberryPi_JetsonNano/python/examples $ sudo python3 epd_7in5_V2_test.py
INFO:root:epd7in5_V2 Demo
INFO:root:init and Clear

The wifi connection drops then (reboot i guess).. there is nothing displayed.

Running "run.sh":

pi@host:~/waveshare-epaper-display $ ./run.sh

---

/ | | | ___ _ __ __| | __ _ _ __ () __ / | ___
| | / | |/ _ \ '_ \ / _ |/ ` | '__| | | ' | | / _
| |__| (| | | / | | | (| | (| | | | | | | | | () |
__,||_|| ||_,|_,|| ||| ||_| _/

Found cached calendar response
(some calendar entry)
(some other calendar entry)
Traceback (most recent call last):
File "screen-calendar-get.py", line 80, in
output = codecs.open(template , 'r', encoding='utf-8').read()
File "/usr/lib/python3.7/codecs.py", line 898, in open
file = builtins.open(filename, mode, buffering)
FileNotFoundError: [Errno 2] No such file or directory: 'screen-output-weather.svg'

---

| | ___ __ ___ _ | |
| | \ / / ' \ / _ | '| |
| | > <| |) | () | | | |
|_/_/_\ ./ _/|| _|
|_|
Entity: line 1: parser error : Document is empty

^
** Message: 16:23:09.331: The preferences file /home/pi/.config/inkscape/preferences.xml is not a valid XML document.
** Message: 16:23:09.333: Inkscape will run with default settings, and new settings will not be saved.
Failed to get connection
** (inkscape:511): CRITICAL **: 16:23:09.472: dbus_g_proxy_new_for_name: assertion 'connection != NULL' failed

** (inkscape:511): CRITICAL **: 16:23:09.474: dbus_g_proxy_call: assertion 'DBUS_IS_G_PROXY (proxy)' failed

** (inkscape:511): CRITICAL **: 16:23:09.477: dbus_g_connection_register_g_object: assertion 'connection != NULL' failed

** (inkscape:511): WARNING **: 16:23:15.545: Can't open file: screen-output-weather.svg (doesn't exist)

** (inkscape:511): WARNING **: 16:23:15.558: Can't open file: screen-output-weather.svg (doesn't exist)

** (inkscape:511): WARNING **: 16:23:15.561: Specified document screen-output-weather.svg cannot be opened (does not exist >or not a valid SVG file)
convert-im6.q16: unable to open image screen-output.png': No such file or directory @ error/blob.c/OpenBlob/2874. convert-im6.q16: no images defined screen-output.bmp' @ error/convert.c/ConvertImageCommand/3258.

---

| _ ()__ _ __ | | __ _ _ _
| | | | / | ' | |/ ` | | | |
| || | _ \ |) | | (| | || |
|/||/ ./||_,|_, |
|| |_/
0

bcm2835 init success !!!

After his, the device reboots.

[mendhak]

The first problem is easy enough - it happens because the screen-weather-get script is taking screen-template.svg and renaming it to screen-output-weather.svg and some of the subsequent scripts are expecting that svg to exist. I assume you've commented that bit out so no such file gets produced.

You could try making a copy of the screen-template.svg and call it screen-output-weather.svg so that the calendar script can find the file.

[mendhak]

I think try to get the samples working first. If those don't work, this project won't.

You'll later run into another problem - which is this project was written for the v1 screens and you probably have the v2 screens. I'm just working on a script for that right now that might help.

But in the meantime try to get the demo working.

[ghost]

Thank you for your reply. Yes, i have the V2 screen. Trying to run the examples results in a device reboot. I'm running buster lite, does that make a difference?

[mendhak]

I really don't know why even the samples would result in a reboot, you'll have to troubleshoot this. It could be not enough power being supplied (try a higher Amp charger, power from mains instead of computer, something like that), it could be the OS (sure you can try Raspbian Stretch), just to eliminate variables.

[feh123]

Hi @pdavid-muc I used the Raspberry Pi Imager and downloaded the recommended version. I followed @mendhak's advice re using the demo. It worked almost straightaway - I never saw a reboot error.

[ghost]

I have really no idea what i am doing wrong. Tried different power source (2.4A). Did exactly what is described in the readme. When i try to run the demo:

~/e-Paper/RaspberryPi_JetsonNano/python $ sudo python3 examples/epd_7in5_V2_test.py
INFO:root:epd7in5_V2 Demo
INFO:root:init and Clear

The raspberry pi just restarts.

[mendhak]

@pdavid-muc I see an issue similar to yours on the waveshare repo, have a look : waveshareteam/e-Paper#92

It also looks like it's worth emailing Waveshare directly since what you're experiencing doesn't seem to be normal - their screen with their own sample code isn't working.

[ghost]

I'll have a look there - thank you very much!