Serial port i/o, how?

Serial port i/o, how?

[Andreas]

philw@plan9.att.com writes:

> >how do I access a serial port?
> con -r /dev/eia0

When I do this, it just hangs. I'm using a hardware setup (null modem
cable to another machine) which works in DOS.

In another window, 'cat /dev/eia0ctl' returns:
cts dsr ring dcd dtr rts

Is there anything else I need to send to the control port?

Andy

Serial port i/o, how?

[presotto]

Read:

http://helix/magic/man2html/3/scc
http://helix/magic/man2html/1/con

You can set baud rates, etc., by echoing the right goo into
the ctl file.  For example:

	echo -n b19200 > /dev/eai0ctl

sets eia0 to 19200 baud.  Not all the controls are sticky in
the Unix sense so you should do this while you have the /dev/eia0
open.

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Subject: Re: Serial port i/o, how?
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philw@plan9.att.com writes:

> >how do I access a serial port?
> con -r /dev/eia0

When I do this, it just hangs. I'm using a hardware setup (null modem
cable to another machine) which works in DOS.

In another window, 'cat /dev/eia0ctl' returns:
cts dsr ring dcd dtr rts

Is there anything else I need to send to the control port?

Andy

Serial port i/o, how?

[philw]

it is entirely possible we number the ports
in the opposite fashion to DOS. try eia1.

philw

Serial port i/o, how?

[philw]

>This might be a rudimentary question, but 
>how do I access a serial port?
>(for example, to use a window as a terminal)

con -r /dev/eia0

Serial port i/o, how?

[Andreas]

This might be a rudimentary question, but 
how do I access a serial port?
(for example, to use a window as a terminal)

Thanks,
Andy