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Error with demos #62

Closed dragongears closed 7 years ago

dragongears commented 7 years ago

I am trying to use the PaPiRus with a Raspberry Pi 2 and get the following error with any demo that writes to the screen. I am relatively certain I followed the setup instructions correctly.

pi@gear ~ $ sudo papirus-write "Test" Writing to Papirus....... Traceback (most recent call last): File "/usr/local/bin/papirus-write", line 73, in main() File "/usr/local/bin/papirus-write", line 33, in main write_text(papirus, args.content, args.fsize) File "/usr/local/bin/papirus-write", line 69, in write_text papirus.display(image) File "/usr/local/lib/python2.7/dist-packages/papirus/epd.py", line 139, in display f.write(image.tobytes()) File "/usr/lib/python2.7/dist-packages/PIL/Image.py", line 512, in getattr raise AttributeError(name) AttributeError: tobytes

YoungAtHome commented 7 years ago

tobytes() is a Python3 function so either use that, which is the best thing to do, or find the future statements to add to your 2.7 code.

Nick

YoungInSurrey@gmail.com On 29 Nov 2016 1:57 am, "Art Dahm" notifications@github.com wrote:

I am trying to use the PaPiRus with a Raspberry Pi 2 and get the following error with any demo that writes to the screen. I am relatively certain I followed the setup instructions correctly.

pi@gear ~ $ sudo papirus-write "Test" Writing to Papirus....... Traceback (most recent call last): File "/usr/local/bin/papirus-write", line 73, in main() File "/usr/local/bin/papirus-write", line 33, in main write_text(papirus, args.content, args.fsize) File "/usr/local/bin/papirus-write", line 69, in write_text papirus.display(image) File "/usr/local/lib/python2.7/dist-packages/papirus/epd.py", line 139, in display f.write(image.tobytes()) File "/usr/lib/python2.7/dist-packages/PIL/Image.py", line 512, in getattr raise AttributeError(name) AttributeError: tobytes

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francesco-vannini commented 7 years ago

Hello, did you enable SPI?

On 29 November 2016 at 01:57, Art Dahm notifications@github.com wrote:

I am trying to use the PaPiRus with a Raspberry Pi 2 and get the following error with any demo that writes to the screen. I am relatively certain I followed the setup instructions correctly.

pi@gear ~ $ sudo papirus-write "Test" Writing to Papirus....... Traceback (most recent call last): File "/usr/local/bin/papirus-write", line 73, in main() File "/usr/local/bin/papirus-write", line 33, in main write_text(papirus, args.content, args.fsize) File "/usr/local/bin/papirus-write", line 69, in write_text papirus.display(image) File "/usr/local/lib/python2.7/dist-packages/papirus/epd.py", line 139, in display f.write(image.tobytes()) File "/usr/lib/python2.7/dist-packages/PIL/Image.py", line 512, in getattr raise AttributeError(name) AttributeError: tobytes

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub https://github.com/PiSupply/PaPiRus/issues/62, or mute the thread https://github.com/notifications/unsubscribe-auth/APUu16DQ9ARSM6_6cqZaijL4ZGX3E_UVks5rC4aHgaJpZM4K-erm .

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dragongears commented 7 years ago

@francesco-vannini Yes, I enabled SPI.

dragongears commented 7 years ago

@YoungAtHome I tried running the demo under Python3 and ended up getting even more errors.

It looks to me like the papirus-write demo is written in Python 2 but /usr/local/lib/python2.7/dist-packages/papirus/epd.py is Python 3. But I could be wrong since I don't know much about Python (yet).

I haven't written any actual code yet. I got as far as setting up and installing the PaPiRus on a Raspberry Pi 2 running Raspbian and hit this roadblock while trying out the demos to make sure the PaPiRus works correctly.

francesco-vannini commented 7 years ago

You could change the code to use tostring() instead of tobytes() or update your OS with sudo apt-get update and then sudo apt-get dist-upgrade to get the latest firmware.

dragongears commented 7 years ago

@francesco-vannini Changing the code to use tostring() did the trick! Thank you!