`sdwire switch` should wait to exit till switching is completed

[bradfa]

For scripting, it would be nice if there was a way for sdwire switch command to not exit until the switch has completed. It seems like the switch from target to host mode can take 2-3 seconds on my system but sdwire switch returns in well under 1 second.

In this case, I'm considering the switch from target to host mode complete when the SD card device shows up on my host.

Having the switch wait until the device shows up on the host (or disappears from the host completely) would help with scripting use-cases so that doing sleep X isn't needed nor external checking for device showing up / going away.

[talhaHavadar]

this might be a bit (just a little) challenging to implement. For linux I have some ideas already to achieve this but not sure about how I could do this in macos (dont have much experience with it)

I am not even mentioning windows (sorry :) )

But I will take a look to first implement this in linux at least, thank you very much for bringing this up

[bradfa]

I had definitely not considered how this might work on MacOS or Windows! Sorry!

For Linux I have a very rough attempt at solving this which I've tested an seems to work for me: bradfa@258458d