Hijacking OEM hardware - '51 EFI project

[alex nicu]

$89 for a single board computer with 552 it's not bad ( your uC is 552 
or 562 ?).
 What kind of C you are using ?
Better try to use assembler than C , you will be faster .
You have any debugger for your board ?
>From my experience , without a debuger with trace option , you are lost 
. 
If anyone is thinking to start a common project with '51 uC I'll be glad 
to be on the list . For the beginning , I can make public my development 
system for '51 uC ( which can be expanded to '552 ) 
I have schematics , gerber files and all the software for this system . 
The software have 2 components , one on the dev system and one on PC , 
and , yes , you have trace and you can monitor your registers and your 
memory from PC via serial link .
For the analog interface ( sensor signal conditioning ) any input will 
be apreciate . 
On my projects I'm using already ignition signal , MAP sensor signal , 
throttle position sensor signal , and O2 sensor signal .
It's nothing special to fire the injector . Now , I'm using a normal 
darlington transistor without any problems . Of course this can be 
improved by using an LM1949 ( if I'm not wrong ) , but till now I can't 
get one .
Alex
http://home.onestop.net/nalex


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