Tod Merley wrote:
On Nov 27, 2007 7:48 AM, Karl Larsen <k5di@xxxxxxxxxx> 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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Hi Karl F. Larsen!
What I like to do with dmesg is #dmesg > dmesg.txt and then call - say
Abiword to actually paw through the file. Searching in Abiword for
"serial" I found these three lines together:
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
pnp: Device 00:0c activated.
00:0c: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
Looking a bit at the SW you like to use I see that it uses hamlib to
control the rig. The error message may well indicate that the hamlib
you have compiled talks to a port whose SW interface (e.g. - at I/O
0x3f8 (irq = 4)) ls located elseware..
That is my guess.
Good Hunting!
Tod
Hi Tod all I get is this:
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
Nothing about being set up in dmesg. It appears the kernel correctly
sees the driver. But for some reason it is not turned on.
--
Karl F. Larsen, AKA K5DI
Linux User
#450462 http://counter.li.org.
