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. > > -- > fedora-list mailing list > fedora-list@xxxxxxxxxx > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list > 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
