Re: Ultra1, printing via serial port? (Solved)
"F. Kappen" wrote:
> Jan-Benedict Glaw wrote:
>
> > On Fri, 2005-07-29 15:13:45 +0200, F. Kappen <kappen@tfh-berlin.de> wrote:
> > > The serial port of my Ultra1 is configured like this:
> > >
> > > myUltra1: # eeprom ttyb-mode
> > > ttyb-mode=9600,8,n,1,-
> >
> > That's how the OBP will use the serial port. This is totally different
> > to the options that may be set by the Linux kernel. You can query (and
> > set) these with the stty program:
> >
> > $ stty -F /dev/ttyS0 -a
> > speed 9600 baud; rows 0; columns 0; line = 0;
> > intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>;
> > eol2 = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W;
> > lnext = ^V; flush = ^O; min = 1; time = 0;
> > -parenb -parodd cs8 hupcl -cstopb cread clocal -crtscts
> > -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff
> > -iuclc -ixany -imaxbel
> > opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
> > isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt
> > echoctl echoke
> >
> > If your printer uses 9k6 8N1, you can try this (disables handshake):
> >
> > $ stty -F /dev/ttyS1 raw speed 9600 -crtscts cs8 -parenb -cstopb
> >
> > However, I admit that stty isn't easy to use if you don't know a lot
> > about how serial transmissions work...
> >
> > > ----------------------------------
> > > The tty-section of my "/etc/inittab" looks like this:
> > >
> > > #1:2345:respawn:/sbin/getty 38400 tty1
> > > #2:23:respawn:/sbin/getty 38400 tty2
> > > #3:23:respawn:/sbin/getty 38400 tty3
> > > #4:23:respawn:/sbin/getty 38400 tty4
> > > #5:23:respawn:/sbin/getty 38400 tty5
> > > #6:23:respawn:/sbin/getty 38400 tty6
> >
> > Irrelevant, as long as there's not a console configured to the same port
> > (and for sure, you won't directly connect your console to a printer, do
> > you?)
> >
> > > myUltra1: # cat ~/.bashrc > /dev/ttyS1
> >
> > First of all, you need to correctly configure the serial port with stty.
> > For the next step, are you sure your printer accepts plain text for
> > printing? (Actually, you never ever told us about your exact printer
> > model.)
> >
>
> Jan-Benedikt,
>
> thank you for suggestions. I tried your proposal
>
> $ stty -F /dev/ttyS1 raw speed 9600 -crtscts cs8 -parenb -cstopb
>
> but, unfortunately, without success. But now I know where to dig deeper into the
> material. I shall read the stty info and I shall fiddle around with the stty
> settings.
>
> Btw. my printer is an old HP-laserjet4P. I don't know, if it accepts plain ASCII,
> but trying to print a file piped through GHOSTSCRIPT doesn't work either.
>
After trying several stty settings I noticed that the printer's serial port was not
correctly setup ( I had to change DTR/DSR ---> XON/XOFF). With these configuration
all worked fine. Nothing needs to be changed in the original setting of the Ultra1's
serial port.
Cheers
Friedhelm
Reply to: