http://www.megasquirt.info/

 MegaSquirt & Rotary Engines

This is an overview for using MegaSquirt on a Mazda rotary engine. It is not intended to be a primer on Wankel rotary engines themselves, only how to use MegaSquirt with them. To find out more about Wankel rotary engines, go to Blake Qualley's excellent Rotary Engine Illustrated web site. ....

Although this is ALL very good info, most of the MS-EFI 'offical'
information on how to setup a rotary is from the original 1.0 board and
MS SW.. things have changed and advanced significantly since it was
written..

Ian
BAS

I am not so fond of the new one as the code is written in C.
I got 20 years experience writing 6502/6800 asm.
I would rather enhance the code in asm myself.

BTW if people want to know what an EFI computer does and when
it does it this is a flow chart. They are all pretty much the
same. They all do only one instruction at a time.
A few abbreviations are called for:

RTC is request to send.
VE is Volumetric Efficiency.
EGO ????
PWM Pulse Width Modulation.
ADC analog to digital converter.
ASE ?????

IRQ is interrupt request. The computer monitors a pin
and when it changes the computer stops what it is doing
and does something related to the signal on that pin.
When it finishes the IRQ task it goes back and resumes
what it was doing before and where it left off.

SCI is a serial interface for communicating
with other hard ware over just a few wires.

What I really like about this is the openness of it.
You have the source code so you know when the computer
does something and how it does it. If it does something
you don't like you can change it.

Paul Lamar

The guy that writes the latest code for MSnS-E is a rotor head and has
it running with the CAS ( which has been the hold up for awhile with the
MS system.. the V3.0 board incorporates an lm1815 signal conditioner for
running one set of crank triggers and has a development area for putting
a second lm1815 in fr the 2nd set of  triggers. ( trailing & leading now
)..

Ian
BAS

I don't suppose he has it working with the RX8 single sensor
system does he? Kind of easy to put a pic in there dedicated
to the RX8 system that puts out pseudo 2nd gen dual pulses :)
Throw a little hardware at the problem :)

Paul Lamar