[hpsdr] Parallel port replacement - help needed

[Philip Covington]

Hi Phil,

There is no need to transfer the parallel port data through the two
spare endpoints.  This will keep us from being able to quad buffer the
endpoints which may be needed when we finally get rid of the BAD Xylo
influence on the OZY.  We can use EP0 to control the parallel port
through control transfers using vendor commands.  This is a much
cleaner way of doing it since we do not need to transfer 512 byte
packets just to control an 8 bit parallel port.

As a matter of fact, doing it through control transfers will allow us
to pretty much treat it like a real parallel port from the PC side of
things. The parallel port code in PowerSDR can be basically used AS
IS.. instead of writing to the PortIO dll we will just send a vendor
command to EP0.

73 de Phil N8VB



On 8/1/06, Phil Harman <pvharman at arach.net.au> wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi Sami,
>
> Thanks for your reply. At the moment we have two spare pipes to the Ozy FX2
> that we may be able to use to carry the parallel port data rather than imbed
> it in the audio data frames.
>
> That way we may be able to use your existing Sdr1kUsb.dll.
>
> I guess this depends on how much processing is done in the FX2 in your
> implementation and if we can reproduce it in the FPGA.
>
> Have a good trip and I look forward to receiving the information.
>
> 73's Phil....VK6APH
>
>
>
>
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.10.5/404 - Release Date: 31/07/2006
>
> _______________________________________________
> HPSDR Discussion List
> To post msg: hpsdr at hpsdr.org
> Subscription help: http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org
> HPSDR web page: http://hpsdr.org
> Archives: http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/
>

 1154441313.0