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Old 06-19-2011, 06:34 AM   #1
alex4evr
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Registered: Jun 2011
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serial port linux


Hello,

I have communication problems with my serial port. I made a loop-back cable (shunting pins 2-3) that I connected to my serial port, while using gtkterm (which opens ttyS0 successfully) I do not have characters echoed back to the terminal window. Here is my laptop configuration:

Laptop:
IBM t42, with serial port enabled (bios) on port replicator, port adress 0x3f8, irq 4

Code:
dmseg | grep tty
console [tty0] enabled
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a NS16550A
serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a NS16550A
00:0a: ttyS0 at I/O 0x3f8 (irq = 4) is a NS16550A
ttyS1: LSR safety check engaged!
ttyS1: LSR safety check engaged!
ttyS1: LSR safety check engaged!
Code:
setserial -g /dev/ttyS0
/dev/ttyS0, UART: undefined, Port: 0x03f8, IRQ: 4
Code:
setserial -g /dev/ttyS1
/dev/ttyS1: No such device
Could anyone help please?

Regards;
Alex.
 
Old 06-19-2011, 03:55 PM   #2
alex4evr
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Registered: Jun 2011
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hi again,

I found the problem, it was the damn db9 connector which is messy. I know this is stupid but huhhh...
thanks for your help pfffff!!!!

Alex.
 
Old 07-10-2011, 02:05 PM   #3
archtoad6
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Congratulations on solving your own problem & thank you for posting the solution.
 
  


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