Serial Port Bug?

[Karl Larsen]

Fernando Apesteguía wrote:
> On 11/27/07, Joe Grace <joe at w1sk.com> wrote:
>   
>> 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.
>>     
>
> I've used some of them and they worked for me and my FC6 without any
> special driver.
>
> Cheers
>
>   
>> 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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>>>
>>>       
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>>
>>     
>
>   
    I do have a usb to serial device but it didn't seem to work with F7. 
It works fine with windows XP. On this computer I have a REAL serial 
port that does not seem to work.



-- 

	Karl F. Larsen, AKA K5DI
	Linux User
	#450462   http://counter.li.org.