[Gllug] set serial port irq

[Jack Richards]

This is where a faker box really comes in handy.

Sounds like you may have a DTR related issue

Best thinng to do is to turn off your iniitab getty for this serial port and 
test the serial connectivity at a lower level.

Try running cat > /dev/ttySX on the reciever machine and echo "hello" 
>> /dev/ttySY on the sending machine

( Substitue X and Y for your own port ids ) 

Check to see if your getting stuff.  Use stty -F /dev/ttySX and set ospeed, 
ispeed to the correct values first and use setserial and the uart flag to set 
the UART to 16550A.

if you are not getting data after this, then consider that your cable is not 
xover ( pin 2 to 3 3 to 2 7 to 7 etc ) or that your flow control is not right.

Jack 


Quoting Doug Winter <doug at pigeonhold.com>:

> On Mon 19 Apr Ben Fitzgerald wrote:
> > I'm connecting using minicom from box 1 to mgetty on box 2.
> > I don't get a login: prompt!
> 
> I doubt that you want mgetty as is, that's for modems.  use getty (or
> run mgetty as getty, or use the -r switch to mgetty).
> 
> check that your getty is really being spawned from the inittab.  it
> often isn't by default.
> 
> check that you have the following set correctly at both ends:
> 
>     baud rate
>     stop bits
>     parity
>     flow control
> 
> are you sure you have the right cable?
> 
> > Typing AT<cr> doesn't get a response either.
> 
> unless you have a getty that talks the Hayes command set (which you
> don't :) that's not going to help.
> 
> hitting return a few times can help wake up getty though.
> 
> doug.
> 
> -- 
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Jack Richards

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