Hello,

I am writing an embedded Linux application that interacts with a serial device (a /dev/ttyS[0-9] ). However, that device exists as part of a much slower machine than my desktop, which lacks decent development tools. I'd like to debug the application while it is actually writing to the device.

I can't just plug in the serial device to my desktop serial port, because it uses a non-standard voltage.

How can I use that remote ttyS as if it was local to my machine? I've tried some cleverness with netcat, but with limited results - basically, it's a hassle to write to a local file, detect that it has been changed dynamically, send that over netcat and write that to the remote serial device (I gave up after a while - I couldn't get py-inotify to work). Could someone suggest a better, more robust way of approaching this problem?

Regards,
Sternocera

Don't know of a way, since I'd have suggested the netcat route. However, given your knowledge of things, it might be easier to put the non-standard serial device into a breadboard at your desk, and tweak the voltages there, to make it 'standard', so your workstation can handle it.

what is the non-standard voltage? As implied there are converters for TTL, RS-422 or RS-485 which are typical for non-standard voltage/protocols. If it is true RS-232 then most modern computers can handle less then the +/- 12VDC standard.