Re: [Fx2lib-devel] [All My Brain] Comment: "Cypress GPIF waveform behavioral model"

[Dennis M. <de...@ub...>]

Jon Elson wrote:
> Dennis Muhlestein wrote:
>>
>>
>> The lights are hard coded to the addresses on the fx2 ez-usb devel 
>> board (CY3684/3674). There are 4 lights at the top of the board d2-d5 
>> that toggle on and off if I recall correctly.  If you're not using 
>> the fx2 devel board, and you have a serial port, you could try the 
>> serial program as an example.
>>
> Ah HA!  that's the problem, I have a SerMod-56.  The 56-pin version of 
> the chip doesn't have the memory bus brought out, so no wonder I don't 
> see any activity.  Is there a simple change to the lights.c code that 
> can allow the 8051 to wiggle some output pins?
Are you talking about the P[A-E]x pins?  Those are modified just by 
writing to the appropriate special function register ( depending on how 
you configure them anyway)
>>
>> Good luck!  Do post your progress and issues along the way.  Did you 
>> happen to see the fx2lib framework post?  It's a quick way to get up 
>> and running with your firmware and is quite close to the Keil based 
>> framework provided by Cypress.
> I tried joining the SourceForge group fx2lib-devel, but the mailing 
> list still shows up as "read only" to me on the SourceForge web page.
Did you get to this page:
https://lists.sourceforge.net/lists/listinfo/fx2lib-devel
>
> Are there any published codes that use the GPIF?  I haven't been able 
> to find anything that shows how to do this.  I just need some REALLY 
> basic GPIF functions to slow the transmission down and generate a 
> strobe pulse for each word transferred.  My attempts to kluge some 
> GPIF configuration into Wolfgang Wieser's  fx2pipe code just locked 
> things up.  Most likely too large a program or putting the block of 
> GPIF bytes in the wrong location.
I haven't added any gpif examples to fx2lib because to use the GPIF, you 
have to attach a device.  The default fx2 devel board doesn't have 
anything to talk to.  The documentation for the gpif functions is here 
though:
http://fx2lib.sourceforge.net/docs/gpif_8h.html
Or you can look at the gpif header if you're using git with the repository.

-Dennis