[Efi332] (from a Newbe) Just want to know...

[Doug Brunner]

I'm also working on a new Phytec-555 based computer, for the University 
of Delaware's Formula SAE car. I had a system based on the old EFI332 
4-layer board working, but it suffered a series of glitches after 
sitting for a few months that I was unable to fix, or even trace down. 
We decided to go with a new system that could avoid the shortcomings of 
the original 332 board (large, high component count, glitch-prone). I'm 
presently designing the carrier board that will hold input buffers, 
signal conditioning, injector drivers, and open-collector outputs to 
connect to the ignition box.

I expect a lot of my code to carry over, and the remainder is mostly 
configuration, which should be simple (no need to interface with 
external ADC's, etc., like on the 332 board). I developed a 
serial-port-based tuner program of my own that can be configured for 
multiple arrangements and sizes of tables (e.g. you can change table 
resolution without any programming changes), which I'll be updating to 
support floating-point data types. You can take a look at my codebase on 
the DIY-EFI ftp site, in /incoming; the code for the 332 is 
efi332-code-udsae-2005.tar.gz and the tuner program is zut-1.0.tar.gz.

       --Doug Brunner

Paul Helmuth wrote:

> ...if there is any current activity on the original EFI332 project, or 
> of course, an updated version of the project.
>  
> I have been working on developing an ECU based on the 
> Motorola/Freescale MPC555 for some time. I am working with the Phytec 
> development board, the GCC tool chain, a Macraigor Wiggler, and a 
> Flash Programmer from Macraigor.
>  
> I am working with a 60-2 crank trigger wheel from Electromotive (with 
> one of there sensors). I am using the TPU micro code from the EFI332 
> FTP archive that is set up for a 60-2 input train.
>  
> I have quite a bit of stuff working, though not a complete system yet. 
> I will be testing the ignition triggering this month, then work on 
> adding the fuel injection.
>  
> I have a pretty nice lap-top monitor/tuner application that 
> communicates with the MPC555 through one of it's on-chip serial ports.
>  
> In the past, I have had some questions about the TPU microcode, but I 
> have the major functions (PMMX, PSP12, LPWM2) working just fine now.
>  
> Just wanted to see if there were some other nuts like me, that I could 
> share being nuts with.
>  
> -Paul.
>
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