[PARPORT] Read data using ppdev

From: Stefan Holzheu (Stefan.Holzheu@uni-bayreuth.de)
Date: Wed May 17 2000 - 06:44:23 EDT

  • Next message: Tim Waugh: "Re: [PARPORT] Read data using ppdev"

    Hello,

    as my old amiga computer broke down recently, I am focussing the
    problem, that I have to read out data from a transient recorder with an
    other computer system. The transient recorder interface offers 8 data
    lines, some control and status lines. So I thought about using a
    pc-parport and linux to solve the problem.
    In the web I read about the new development of the ppdev in the new
    linux kernel. The access of the parport through ioctl seemed quite
    straightforward.
    However my small test program has problems with ioctl requests
    PPRCONTROL, PPDATADIR, PPWDATA.
    PPFCONTROL in contrast worked.

    I'm using the 2.3.99-pre8 Kernel. PPDEV is compiled as module. Actual
    BIOS Setting is EPP.

    My experience in linux-C/C++ programming is rather small. Could anyone
    tell me, whether the way I want to solve the problem could run in
    principle or whether I'm totally running in a wrong direction?

    Stefan 

    --
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Stefan Holzheu           Tel.: 0921/55-2765        Fax.: 0921/55-2780
Physikalische Chemie I   Universitaet Bayreuth     D-95440 Bayreuth
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