Spreads/HIDAPI

[eriwm]

Hello, I dont think this is specifically a HIDAPI problem but I am trying to use HIDTRIGGER in spreads which needs HIDAPI to function as follows. Trigger plugin that waits for a key press on any USB HID device. """ from future import unicode_literals import hidapi import logging import threading import time from spreads.plugin import HookPlugin, TriggerHooksMixin from spreads.util import DeviceException However when I try to configure Spreads and choose the HIDTRIGGER plugin I get the error - ExtensionException: Missing Python dependency for extension 'hidtrigger':hidapi. I have tried several ways of installing HIDAPI including downloading and building from the git repository. Doing a file search shows that HIDAPI is installed but it seems to me that HIDTRIGGER cannot find HIDAPI so I don't think I am installing it in the right place. Can someone please point me in the right direction. Thanks Eric.

[todbot]

This sounds like a Python library question, not this hidapi (a C library). I think instead you should be looking at: https://pypi.org/project/hidapi/ This is the Python hidapi wrapper that I often use. You can install it with pip install hidapi.

[eriwm]

Hello Tod, Thank you for getting back to me so quickly. I have tried installing as you described but still get the same error message. I am using ubuntu 16.04 and I think maybe the problem lies somewhere in the symlinks, guess I will just have to keep digging. I am not an expert so going to take some time. Once again thanks. Eric

On 10/07/2018 17:18, Tod E. Kurt wrote:

This sounds like a Python library question, not hidapi (a C library). I think instead you should be looking at: https://pypi.org/project/hidapi/ This is the Python hidapi wrapper that I often use. You can install it with |pip install hidapi|.

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[todbot]

Looking at the setup file for spreads, I think you should instead be installing hidapi-cffi. But this should have gotten installed for you if you installed spreads via the normal means, as described here: https://pypi.org/project/spreads/

[eriwm]

Thank you so much - installing hidapi-cffi seems to have fixed the problem. The version of Spreads I am using was downloaded from

https://github.com/DIYBookScanner/spreads.git I was never able to get the version from https://pypi.org/project/spreads/ to work properly. You have saved me hours of work- thanks again. Eric

On 10/07/2018 18:31, Tod E. Kurt wrote:

Looking at the setup file for |spreads|, I think you should instead be installing hidapi-cffi https://pypi.org/project/hidapi-cffi/. But this should have gotten installed for you if you installed |spreads| via the normal means, as described here: https://pypi.org/project/spreads/

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