I have actually been wondering about the same/similar thing, on how to
feed information into hall.
On 6/4/20 2:33 PM, Chris Albertson wrote:
I'd like to build a handheld pendant controller. I have some ideas about
how it should work. One thing I want is an LCD screen. This could evolve
into a "smart pendant" that can do things like move along an arc, rather
than just one axis at a time.
I think the best physical interface from a handheld device to the computer
is USB. Is there a way to get data from USB to HAL? I could use a USB
virtual serial port but then the question is getting serial port data to
HAL.
Maybe the best interface is wireless, so how to get data from a UNIX socket
to HAL?
Note that we don't need "hard" real-time to the computer. Latency of a few
tens of milliseconds is acceptable for a human interface so this could be
done in userspace. If so, then maybe all I need is a way to get data from
an arbitrary Linux application to HAL.
It just occurred to me that this "arbitrary Linux application" could be the
Apache webserver. Then you run a browser on the tablet.
Summary: How to move data from USB or serial or socket to HAL?
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