Serial Port Bug?

[Joe Grace]

I wonder if using a USB to serial adapter would work well in linux. It
worked well when I was a mac user. I wanted to experiment with using
fldigi, but my laptop only has USB which is common for new machines.
It seems like serial ports are going bye bye.


Joe Grace, AKA W1SK

On 11/27/07, Karl Larsen <k5di at zianet.com> wrote:
>     I have a software I like to use called gmfsk which uses the serial
> port to turn on and off the transmitter in my radio. It worked fine on
> my old computer. Now when I try to run gmfsk it puts up an error panel
> that says "Not a serial or parallel port". This made me think the new
> computer which has a serial port that is not working.
>
>     With a volt meter I find some pins have a constant -10.7 volts on
> them which is the standard RS-232 for a no-data signal. In this static
> measure the voltmeter sees no positive volts near +12 volts.
>
>     Wanting a way to test the serial port I recalled minicom and after
> getting it set up on /dev/ttyS0 it seems happy with Com 1. The old
> /dev/modem is gone on F7. But now what is a way to drive the serial port
> pins to a constant plus voltage with minicom?
>
>     I have a scope that I can use if there are no way to make a constant
> positive voltage. My fear is that the serial port is broken and can't
> make a positive voltage.
>
>
>
> --
>
>         Karl F. Larsen, AKA K5DI
>         Linux User
>         #450462   http://counter.li.org.
>
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