Example Code

[KenwoodFox]

Could i get some help putting some example code together? Ill add it to a PR maybe under /examples?

[brandonrc]

# This is a sample Python script.
import pyhid_usb_relay

def off(relay):
    # If relay state is on (1) then we can turn it off.
    if relay.state:
        relay.toggle_state(1)
    else:
        print("The relay is already off")

def on(relay):
    # If relay state is not on (1) then we can turn it on.
    if not relay.state:
        relay.toggle_state(1)
    else:
        print("The relay is already on")

if __name__ == '__main__':
    relay1 = pyhid_usb_relay.find()
    on(relay1)

Hope this is not too late.

Basically you want to make a relay control object using the pyhid_usb_relay.find(). Once you set that variable then you can start toggeling it or getting state information from it.

I made two functions ON/OFF. With the current library you can only toggle which is not good enough for me. I want to make sure it is on or off before flipping the switch.

[KenwoodFox]

# This is a sample Python script.
import pyhid_usb_relay

def off(relay):
    # If relay state is on (1) then we can turn it off.
    if relay.state:
        relay.toggle_state(1)
    else:
        print("The relay is already off")

def on(relay):
    # If relay state is not on (1) then we can turn it on.
    if not relay.state:
        relay.toggle_state(1)
    else:
        print("The relay is already on")

if __name__ == '__main__':
    relay1 = pyhid_usb_relay.find()
    on(relay1)

Hope this is not too late.

Basically you want to make a relay control object using the pyhid_usb_relay.find(). Once you set that variable then you can start toggeling it or getting state information from it.

I made two functions ON/OFF. With the current library you can only toggle which is not good enough for me. I want to make sure it is on or off before flipping the switch.

Awesome! you should put this under an /examples folder! :3

[brandonrc]

I can make a pull request :P

This is not my repo

[KenwoodFox]

I can make a pull request :P

This is not my repo

Oh, you can make a fork lol! just fork the repo and make a new PR!

[brandonrc]

#2

Done

[williamblair333]

os version,windows 21h2
py version,3.9

When running example code above, I get error usb.core.NoBackendError: No backend available

[JPEWdev]

os version,windows 21h2 py version,3.9

When running example code above, I get error usb.core.NoBackendError: No backend available

I don't have a Windows machine to test, but this is because of pyusb, not pyhid-usb-relay. If you can figure out if we are missing some dependency there, we can add it to the poetry file to make it work

[williamblair333]

I lost my comment. libusb-win32-devel-filter-1.2.6.0.exe located here https://sourceforge.net/projects/libusb-win32/files/libusb-win32-releases/1.2.6.0/, following instructions from https://stackoverflow.com/questions/13773132/pyusb-on-windows-no-backend-available made the error go away. Now to figure out how to do something useful. I can't make the relay do anything with the example code yet.

Thanks.

[JPEWdev]

I recently update the example code in the repository because the original example was confusing, so make sure you are looking at that one