I have had success with using ppdev with a LapLink cable between two PCs but
not with the negotiation code you referenced. I ended up having to control
it myself on the pin by pin basis.
So are you trying to talk "to a PC from a PC" or "to Peripheral from PC"? I
thought your email said both. Maybe just practicing with PC for now?
Nate
----- Original Message -----
From: "Bob Tanner" <tanner@real-time.com>
To: <linux-parport@torque.net>
Sent: Monday, February 10, 2003 11:41 AM
Subject: [PARPORT] Simple EPP PPNEGOT?
> I'm trying a simple EPP PPNEGOT between to PCs using a Laptop Link cable.
>
> open ("/dev/parport0", O_RDWR|O_NOCTTY);
> ioctl (fd, PPCLAIM)
>
> int mode = IEEE1284_MODE_EPP;
> if (ioctl(fd, PPNEGOT, &mode) != 0) {
> perror("PPNEGOT");
> close(fd);
> return 1;
> }
>
> PPNEGOT: Input/output error
>
> I double checked, both PCs have EPP 1.9 enabled in the BIOS.
>
> I'm using
>
> http://people.redhat.com/twaugh/parport/html/x916.html
>
> To mimic the printer's side of printer protocol.
>
> I am trying to use the parallel port as a control-interface to a piece of
> hardware and have no luck access the port on a pin by pin bases.
>
> --
> Bob Tanner <tanner@real-time.com> | Phone : (952)943-8700
> http://www.mn-linux.org, Minnesota, Linux | Fax : (952)943-8500
> http://www.tcwug.org, Minnesota, Wireless | Coding isn't a crime.
> Fingerprint: 02E0 2734 A1A1 DBA1 0E15 623D 0036 7327 93D9 7DA3
>
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>
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This archive was generated by hypermail 2b29 : Mon Feb 10 2003 - 16:22:17 EST