MegaSquirt, help!

mike95125 · 12-30-2003, 01:19 AM

Ok,
I got the Willette programmer done (for some time now) and I can't seem to find the software and instructions (clear ones) to load up my chip. This will be step one. Does anyone have the 411 on this stuff. Please save me some time...pleeeaase!
Sound desperate enough?

3D914 · 3D914's Garage

Mike,

Here is the link for the programmer page. It has the links for the software: http://members.shaw.ca/megasquirt/WillProg.htm

Also, here is the link for the General FAQ page. It has links to all related topics. Without this I would not have been able to find most of what I needed - the one weakness in building the MS.
http://members.shaw.ca/megasquirt/MS%20FAQ.htm

Enjoy!

mike95125 · 12-30-2003, 11:42 AM

Thanks Gerard,
there is so much info it is overwhelming. I was reading the sites last night till about 3am. I have a problem in that I can not seem to find the following instructions.
"assemble both the boot_r12.asm and megasquirt.asm into their respective '.s19' files. See how to do this in the 'CODE' section of this FAQ"

Do you know where the "'CODE' section of this FAQ" is?

3D914 · 3D914's Garage

Mike,

I don't have the specific link, but I do know where you can find it & someone who may know. On Dave Hunts web site for his megasquirt conversion, he has references to the files needed to compile the .asm & .s19 files. Here is the link to his files page.

He reisdes mostly on the 914Club BBS His login name is DNHunt. You should be able to find him on the Pelican BBS as well under same name. He has gone thru the complete compiling process, and was very helpful to me.

Good luck,

mike95125 · 12-30-2003, 01:53 PM

Great, Thanks again!

mike95125 · 12-30-2003, 04:08 PM

Still can't find a clear explanation of how I am supposed to program my MS chip.My intention is to use my MS to controll my EDIS system instead of my injection primarily. That should be another BIG can of worms.
I dont know where to start....I seem to be going in circles.
Is there any hope for this hardware guy in this software hell?

jkeyzer · jkeyzer's Garage

you'll need a compiler to compile the assembly code into .s19 files - but i think you figured that part out already.

mike95125 · 12-30-2003, 09:57 PM

Stop ****** with me Jeff! What the hell is a compiler? I am an assembly guy. Make hot, then stick together. I may have figured it out already, but don't know what I have figured out. Hows about an english definition?

Alfred1 · 10:38 PM

This is why I'm leaning towards Dave Carlson's system - computer science is not my thing and I don't even remember my first-year-physics electricity stuff.

mike95125 · 12-30-2003, 11:08 PM

"Although Alfred pulled and pulled Mikes head continued to sink deeper into his own @ss"

WTF!? OK. I guess that along with my pre-med classes, and my psych classes I can find time to teach myself what ever the hell this stuff is.....sheesh

jkeyzer · jkeyzer's Garage

A compiler turns human readable code into a instructions that the microprocessor can understand.

You write a program in assembly language, then you run the compiler on that file and it spits out an .s19 file, which you then upload into the processor's memory.

The reason we use compilers is because if you had to write your code in 0's and 1's it would be very confusing and take forever! Assembly language is pretty low level but it's easier than writing to the processor directly.

A high level language like 'C' or Java makes it a lot easier to write programs because it has a lot of routines built in so you don't have to reinvent the wheel. But if you are trying to make a program run very quickly and efficiently (and access the hardware directly like hardware guys like to do) sometimes you are forced to write in a low level language like assembly.

mike95125 · 12-31-2003, 01:14 AM

oooohhhh. I have some files that I have down loaded. I have them and dont know what to do. So I am guessing that I am to use a compiler program (which I think that I have in my down loads) on these files. I dont exactly know how to do that, but I will consult the folks at the 908 site so as not to stray too far from this sites purpose.
Thanks for the long explanations Alfred and Jeff.

Jeff, I think that you may be a link to direct enlightenment with this. I will be PMing you. You have been warned.

end communication

no substitute · 12-31-2003, 07:46 AM

How come the table that guy's sitting at doesn't fall over? It doesn't have any legs.

Alfred1 · 12-31-2003, 08:41 AM

You can't see it but he's not wearing any pants either. Lol! Actually, he looks like he's writing a midterm and is stumped ...

DNHunt · 12-31-2003, 08:54 AM

Mike I hope this helps.

The compiler is a program that combines .asm, .h, and .inc files into language the Motorola chip can use. It's a real pain in the butt unless you have lots of experience.

Here's the good news you don't need to mess with that unless you want to make changes to the code specific to your application. So, I would suggest you run the standard code at least to get started. If you want to change later you can.

You mentioned you want to do ignition with EDIS, so you will need the appropriate .s19 file. (this is the end product of the compiler program.). If you open this in note pad it's just a bunch of numbers and makes no sense. Download the MegasquirtnEDIS
from HERE. Use the program prog08sz to program the chip with the new MegasquirtnEDIS.s19 file. Prog08sz can be downloaded
HERE . You will have to erase your chip prior to burning the new program so be sure this is what you want to do. I don't mean to scare you but think it through. Once you've done it it is really easy and doesn't take much time.

Read about the connection problems with the Willette programmer. Kind of a pain but maybe you'll be lucky and have it go first time.

Hope this helps, Good Luck

Dave

mike95125 · 12-31-2003, 01:37 PM

POP!! Ahh, I can see! OK Dave, that is the plain english I was looking for. I have read manny of the forums and posts, but there was still ambiguity that the lay person (me) could not seem to breach. I am intending to program a blank chip to use for a carbed corvair power plant using EDIS. I will later hook up the FI class and MCAT schedual permitting.
Most of the links that I was going to were dead and didnt have what I "thought" that I needed. I need to "assemble the .s19 files" which I am still not sure about. Supposedly there is a CODE Faq that I am not able to find that discusses this. I think for the most part that I am possibly looking too deep and that this is more user friendly that I am making it.
I will be hooing up my Willette prgmr up trough a serial bus adaptor, but I am privy to the power/programming issue. Ill keep a 9v handy.
Thanks again for all of your help gents its good to walk somewhat upright again.
-Mike (011100110101011100)