Re: [PARPORT] Red Hat 6.5 and Mandrake 8.0 ECP problem

From: Ing. Giorgio Alboni (alboni@biometrika.it)
Date: Mon Sep 03 2001 - 11:06:44 EDT

  • Next message: Jeff Murphy: "[PARPORT] ppdev and select() woes"

    >Do you have some example code that doesn't work as expected, to show
    >to the list?

            else if (FIFO_FULL)
                { // read fifo
                    for (i=0;i<extension->ecp_fifo;i++)
                    {
                        string[BytesRead]=ecp_GetReg(extension,ECPDataFIFO);
                        if (string[BytesRead]==0x00) printf ("Something wrong!
    Read 0x00\n");
                        BytesRead++;
                    }
                    time_start=FxParGetTickCount(); // timeout reset
                }

    As you can see the if istruction isn't exactly "if (0) ..". I user this
    because during image
    transfer never occurs a 0x00 byte. Normally an erorr on transfer image is
    read as 0xFF.
    Infact without the if instruction there are about 10 bad pixel, with it
    there are about 60% of
    bad image (the strange is the periodical error..... the black pixel are
    periodical! If you want
    i can send the image, about 100K).
    T.I.A.

    Ing. Giorgio Alboni
    alboni@biometrika.it

    Biometrika s.r.l.
    Via Bertini, 75
    47100 Forlė
    www.biometrika.it
    Tel. 0543-798604
    Fax. 0543-792064

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