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<== Date ==> <== Thread ==>
Subject: Handling Ethernet-to-Serial Connection when vendor SDK expects tty device
From: "Wlodek, Jakub via Tech-talk" <tech-talk at aps.anl.gov>
To: "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date: Tue, 6 Apr 2021 13:34:28 +0000
Good morning EPICS community,

I had the following question regarding one of the devices that I am currently working on supporting. Essentially, I am using an asynPortDriver
based driver integrated with the device vendor SDK. The vendor SDK has a connection function that expects a string representing either identification
for the USB device to communicate over the USB bus (this I have working fine), or a TTY serial device for communicating over serial (ex. /dev/ttyS0, COM1 on Windows).
When connected directly to the serial port of the target machine, the device connects and this works OK.

However, ideally, we would prefer to use a MOXA ethernet-to-serial adapter to talk to the device, and I am not sure what the best approach for this is. Traditionally,
for say a StreamDevice IOC I would use drvAsynIPPortConfigure(), and then configure the MOXA to communicate via serial on the other end, but given that
the device needs a serial device to connect, I wasn't sure how to handle that. I know there is external software I could use to create a virtual serial device from
an ethernet connection, but is there a way to do this from within EPICS?

Thanks,
Jakub
Replies:
Re: Handling Ethernet-to-Serial Connection when vendor SDK expects tty device Mark Rivers via Tech-talk
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