[hpsdr] FW: hpsdr] [FPGA_USB] Review/Comments FPGA_USBBoard -April 5, 2006

[Eric Ellison]

Steve

Thanks for jumping in.

Basically what Phil - VK6APH and our '2 other person team' were trying to do
was to use the 4550's built in USB to do what we are trying to do with the
the Lionheart or Phil's 'heart' AND the Janus boards are projected to do.
That is 'feed' audio and control signals from USB directly into PowerSDR
software.

We were going to use the Wolfson A/D and the 4550 as a stand alone 'station
accessory' for the SDR-1000 via USB. 


Frustrations with the buggy FED C compiler was a MAJOR impediment, however,
Phil also had some issues with speed of feeding audio over the USB through
the PIC.

I need to have Phil_H comment further. 

Since the Atlas buss gives us the capability of experimenting with 'building
blocks' I felt that it would be valid to go back and investigate a PIC as a
'heart' to this or other projects scheduled as part of HPSDR. 

Additionally if the Atlas buss proves out it's capability, as I think it
will, there is certainly a universal platform to develop and 'build on'
other projects planned for this project. Even other totally different
projects.

Thanks
Eric









I've been lurking for several months now, only because I have more projects
than time.  I've been trying to catch up.
 
What is it you want to do with the PIC18F2550/4550?
 
- Steve N7HPR
 (n7hpr at tapr.org)



-----Original Message----- 
From: Eric Ellison 
Sent: Apr 12, 2006 3:59 PM 
To: "'Christopher T. Day'" , 'High Performance Software Defined Radio
Discussion List' 
Subject: Re: [hpsdr] FW: hpsdr] [FPGA_USB] Review/Comments FPGA_USB Board
-April 5, 2006 


Chris

 

Sorry for the late reply. I have all the software for the Picdem board and
will have to get it for you, I forgot to ship the disk. I don't think it is
available on the website.

 

Hmmm..

 

Anything can "Ride the Atlas Rails!"

 

Methinks there are MANY more PIC programmers than FPGA programmers, although
hardware is in a different category entirely. The PIC 4550 has USB
'built-in'. If one considers what Beppe and Wood Box Radio, as well as Peter
- G3XJP designing the Pic-A-Star did with a PIC what about the HPSDR project
add-in's! 

 

Just 'food for thought' with someone much more capable than me driving the
program. The project boards, and compiler were a no-strings offer. You have
no obligation to do anything with it! 

 

One of Phil_H's (and me and Steve - K5FR's) complaints was that we couldn't
compile for the 4550 with the FED complier, without errors, generated by
bugs in the compiler. Enough to make a grown man cry! Especially when the
weight Phil was carrying kept falling on his toes!

 

I still learned a lot over Phil's frustration, and at my age 'learning
something new' translates to FUN! I have a stack of 'spec sheets' in the
'reading room' (As well as QST's and now RadCom!)

 

Have fun!

 

Eric

 


-----Original Message-----
From: hpsdr-bounces at hpsdr.org [mailto:hpsdr-bounces at hpsdr.org] On Behalf Of
Steven Bible
Sent: Wednesday, April 12, 2006 7:30 PM
To: hpsdr at hpsdr.org
Subject: Re: [hpsdr] FW: hpsdr] [FPGA_USB] Review/Comments FPGA_USBBoard
-April 5, 2006

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