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Message
From: Mark McDougall<markm@v...>
Date: Wed Aug 17 03:15:49 CEST 2005
Subject: [pci] GPIO Core
jtrabal@e... wrote:> My questions are:
>
> 1) How can I program the corresponding bit in the control register to
> 'output mode' ('1')?
>
> 2) How can I program the GPIO pin's output level by writing to the
> corresponding bit in the Line Register?
(Verilog code snipped)
No! The idea is to program the I/O pin from the host software! Once
everything has been hooked up to the wishbone bus, you configure the
image in the FPGA and then you can write to the registers using software
on the host (PC?) to talk via the BAR memory / I/O space. This is how
you select the input or output mode of each pin.
Regards,
--
Mark McDougall, Software Engineer
Virtual Logic Pty Ltd, <http://www.vl.com.au>
21-25 King St, Rockdale, 2216
Ph: +612-9599-3255 Fax: +612-9599-3266
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