serial/parallel loopback testing

Serena · 08-27-2007, 09:18 PM

Is there any software I can run under Linux to allow testing serial and parallel ports with loopback plugs attached?

MS3FGX · 08-28-2007, 06:11 PM

You don't really need special software for that. You could just use minicom or a similar terminal emulator. You could even forgo that if you ran (in two separate terminals):

Quote:

cat /dev/ttyS0

and

Quote:

echo "Test" > /dev/ttyS0

The concept of the loopback tester is that anything sent over TX is wired directly into RX. So sending anything out should cause a duplicate of it to be received if the port is working correctly.

d2e2004 · 08-30-2007, 04:17 AM

you can also use the read and write function to test the ports by opening them using the file open command...