How do I know if a serial device is plugged in?

paul.nel · 10-20-2005, 01:24 AM

I am struggling to get my UPS software up. It does not see the UPS on /dev/ttyS1. How do I check if teh serial connection is OK? dmesg does not give me any info if I insert or remove the serial connection.

Regards
p.n

maroonbaboon · 10-20-2005, 06:38 AM

The UPS HOWTO says

Quote:

Back in the days of dumb serial-line UPses, there used to be about half a dozen different open-source UPS monitor daemons: apcd, dumbupsd, genpowerd. powerd, smupsd, usvd and more. These were fairly stupid programs for a simple job. Many required you to hand-wire a custom RS232C cable to get around various evil things that UPS manufacturers did to their ports in order to lock in customers.

but if you know how it is supposed to work you could try a serial port monitor like

http://serlook.sunsite.dk/

michaelk · 10-20-2005, 06:46 AM

A serial device isn't plug and play.
Can you provide some details. What is the make / model of UPS and the application you are running?

paul.nel · 10-20-2005, 08:54 AM

It is a QP1000 600VA UPS. I do not think this will help much though as I am sure this one of those generic branded UPS's that sellunder a wide variety of names. The software that ships with it is called Winpower and contrary to the name is availblr for most versions of Unix and Linux. (www.ups-software-download.com).

Regards
p.n