DIAG Pin assignment

[asparagustuss]

Really great stuff here. Just curious why the diag pin isn't part of the driver initialization. I'm tempted to change the library, but I was curious to your thoughts as to why its left outside of the scope.

[Chr157i4n]

Thanks for the feedback.

I honestly haven't given it much thought...

The only real use for the diag pin is StallGuard, isnt it?

Currently you have to setup StallGuard with your callback function like this

tmc.set_stallguard_callback(pin_stallguard, threshold, callback)

But yes, with keyword arguments in the constructor, you could also setup StallGuard there. If you want, you are welcome to make a pull request.