Mailinglist Archive: opensuse (4570 mails)

[Michael W Cocke <cocke@xxxxxxxxxxxxxx>]

On Mon, 14 Nov 2005 12:18:23 +0000, you wrote:

>hi,
>
>> typing setserial -g /dev/ttyS? gives:
>>
>> /dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4
>> /dev/ttyS1, UART: unknown, Port: 0x02f8, IRQ: 3
>> /dev/ttyS2, UART: unknown, Port: 0x03e8, IRQ: 4
>> /dev/ttyS3, UART: unknown, Port: 0x02e8, IRQ: 3
>>
>> Which seems okay?
>
>Yes, they look ok, except no UART is specified for 1, 2, 3.  Although
>it could be connected to 0 and the UART is correct.  Check the UPS
>specifications to find out its UART.  You can correct this with
>setserial.  You can also use setserial to automatically configure the
>serial ports ("man setserial" for further information).
>
>> However, cat /dev/ttyS0 gives absolutely nothing, no chatter, nothing.
>
>It would give nothing.  Assuming the UPS understands some commands in
>the same way as a modem, you could just echo commands to it and this
>will be displayed on the screen with cat /dev/ttyS0.
>
>For example, for a modem:
>
>On console 1 ([CTRL] [ALT] [F1]), login as root and then execute:
>
>  cat /dev/ttyS0
>
>On console 2 ([CTRL] [ALT] [F2]), login as root and then execute:
>
>  echo "AT" > /dev/ttyS0
>
>and assuming the modem knows AT commands then it will reply and show
>the reply on console 1.
>
>So, assuming a UPS has some standard commands (refer to the
>manufacturer's manual) then it will respond to commands sent by echo
>and display the output on console 1
>
>--
>/Paul
>
>"It's not about the ending, it's about the journey." - Lex Luthor

What type of ups is it, and are you sure that that's a com port?  The
older APCs had a DB9 connector, but it wasn't a serial port, it was a
relay connection.  I didn't really try interactive monitoring with
upss until the current batch of usb units came out.  Wish I could help
more.

Mike-

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