Re: how can I configure 8255 chip?

>From: Ivan Martinez <imr_at_oersted.dtu.dk>
>To: "linutux loinux" <linutux_1_at_hotmail.com>, comedi_at_stm.lbl.gov
>Subject: Re: how can I configure 8255 chip?
>Date: Fri, 31 May 2002 14:10:47 +0200
>
>Ooops! Sorry, I misunderstood your question. 
>Documentation/comedi/drivers.txt
>says:
>
>"The 8255 appears in Comedi as a single digital I/O subdevice with 24
>channels.  The channel 0 corresponds to the 8255's port A, bit 0; channel 
>23
>corresponds to port C, bit 7.  Direction configuration is done in blocks,
>with channels 0-7, 8-15, 16-19, and 20-23 making up the 4 blocks.  The only
>8255 mode supported is mode 0."
>
>Then I guess you just have to see which comedi functions configure the
>direction of digital channels, which I don't know now...
>Ivan Martinez

yes, I have seen drivers.txt, but my problem is that when I write 
comedi_dio_config (/dev/comedi0,0,0,COMEDI_OUTPUT) to configure the board, I 
see the next error:

command not support








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Received on 2002-05-31Z15:54:24