8051 EFI

[mike mager]

[see my reply about halfway down]

>From: Paul Corner <Paul.Corner at tesco.net>
>Reply-To: diy_efi at diy-efi.org
>To: diy_efi at diy-efi.org
>Subject: Re: 8051 EFI
>Date: Mon, 27 Mar 2000 19:30:44 +0100

>Hi Mike

>The flavour of 8051 is the Siemens 80C515 - 8 channels of 8 bit AD Serial 
>interface & baud rate clock, 3 16 bit counter/timers one with 4 
>capture/compare inputs. Plus the usual IO ports. It may not be everyones 
>cup of tea - It seemed to be the best choice at the time. At least being an 
>8051 core, the programming tools are cheap or even free.

>I never had plans to 'go into production' too many others chasing after a 
>niche market. I just wanted a couple of boards for myself and someone else 
>who had said they wanted one. The local PCB house made some up, plus a 
>couple to cover possible rejects. When I collected them, a zero defect gave 
>me six boards, and as this 'someone' didn't collect, I still have them all.

>With two coil drivers and six injector or relay drivers on board, plus a 
>small scratch pad area - I would like to think it will do for engine 
>management.
Just got to get the software running right.

>Interested ?

-------------> begin my reply <------------
Very intersting!  Yes, I am always interested in what somebody can think of, 
and get to function; and, no (probably) not interested in getting one (yet), 
but I'm not even sure . . .

[Those aren't puns - I _hate_ puns!]

When I subscribed to the '332 list, I was just a bit too late into the '332 
project, and by the time I had thought it over, the group buy was closed.  
Is yours oriented to a four-cylinder engine?  I really need to do some 
planning on the whole EFI matter!  I drive a carb'd vehicle - with an 
integral intake manifold! - so hacking an ECM on my 'daily driver' is out.  
My 'big project' engine is not even in hardware yet (design only).  Maybe I 
do want to scratch-build my own;  wouldn't be 'better' than any other, but 
it would be optimised for my application (yeah, right, buddy), and I would 
know the 'why' of every little detail.  Some of us have a drive to do that! 
(you know)

On the software, no major snag, I hope?

Thanks,
Mike
-------------> end my reply <-------------------

>Regards, Paul.
>
>
>On Mon, 27 Mar 2000, you wrote:
> > Paul Corner mentioned a home built EFI project: (complete quotation 
>below)
> >
> > >I've been playing around with . . .
> > . . . ending up with a 12MHz 8051 based design.
> > WWhat state of play are others at ?
> >
> >
> > Hi, Paul,
> > I have an application in mind for a custom ECU, myself.  I'm curious 
>just
> > _which_ '8051' you have chosen.  I have a so-far unused Dallas
> > "Speed It uP" (Dallas' own pun) DS80C320, which is, as it sounds, a 
>fancy 8032, but with a high clock speed and reduced clock-cycles per 
>instruction. After a bit of (attempted!) rational thought, I have 
>considered strongly using a Motorola processor (designed for the 
>application), if not the (totally irrational?) Infineon AUDO TC1775 
>TriCore, which is also aimed at engine management (just plain 'heavy sand' 
>- fun).

> > A "batch of boards", you wrote;  is this an idea for production?

> > What's your application?
> > Mike

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