Controlling an Older Lutron Homeworks system

I have an older Lutron Homeworks lighting controller. It won’t support the recently announced Lutron Connect Bridge. It would be $1400 for a new processor that would let alone the bridge and the installation so I’m looking for an alternative. My controller has a fixed IP address on my LAN and I can control it from an iOS app that Lutron put out. Assuming the controller has an API and it’s available to me, would it be possible to write a SmartApp to talk to it? I’ve coded just about everything at one time or another.

Update

My Lutron system has telnet access. I believe I read a thread here from a couple of years ago that SmartThings was working on adding telnet support. Did that ever happen?

This works for me: