Just let me know when it goes into production I would love that. Your a genius man

 

Ty sir, except this device would only work for the S2's (2009+). The LCD on the S1 doesn't reside on the MSCAN, however, there is a guy on these forums who developed a product for your generation called the GOODBOX.

 

Yep I know about the GB. Hopefully by the time it goes on the market ill have an 09 .....not

 

Boomshakalaka

http://www.youtube.com/watch?v=OcNuwxjhFbg

 

damn Paimon, Great Progress. I'm sure the S2 owners will be drooling.

 

So Paimon your taking certain addresses available on the HSCAN bus and then putting it on the MSCAN bus and then prompting the information display to show those addresses? Is this how all this works?

 

Essentially. Basically what is happening is that I read from the HSCAN, save the data. I convert the data to a human readable string. Then I open connection to the MSCAN, shoot the string to two addresses, x290 for the first 5 chars, and x291 for the second 5.

The chip acts as the traffic controller, switching between 500kbps and 125kbps operations depending on what task it is trying to perform (HS vs MS)

 

Nice, I understand the basics, but that's about it!

I see a whole Mazda market for you, CX-7, CX-9, Mazda3, Mazda6, Mazda5, MX-5, Mazda2!

 

Heres another update folks

http://www.youtube.com/watch?v=Y_U5leWZq_A

 

I want one!
But I don't have an SII ....

I know how to fix that!

Wait is it wrong to buy the accessories first before the dress? lol

 

Lol!

Well if anyone can provide me the OBD2 pages and Information Display pages from the series 1 wiring diagram I can tell you if it will work. After talking with the creator of the GB we came to the decision that it probably wouldn't, but both ASH and jrx mentioned that they are the same.

The key here is we are leveraging off both the HS and MS cans

edit: Next step while I wait for the bluetooth chip to come in is to make the left and right clicks of the joystick cycle through different functions. Right now RIGHT goes to text mode, LEFT goes to clock mode. Clicking the direction twice puts it back to ECU mode. I will probably have it cycle through different modes probably [ecu, text, mil codes, clock]. I will have to investigate what else we can do.

 

Actually the information displays are different between S1 & S2. See the posts here:
https://www.rx8club.com/series-ii-technical-trouble-shooting-160/any-canbus-gurus-house-217628/

They are wired differently & ASH confirmed different part numbers.

 

Gotcha, thanks for that, yea I feel like I read somewhere that the info display used some spi controls and whatnot as opposed to canbus addressing on the older gen. I actually think the canbus information displays became available with the 2005ish mazda3's.

 

very nice

 

99% sure these are some DTCs in a series I ROM. I believe Cobb just FF's them out.



Does anyone know what CPU the SII ECU uses? If it is still a SH7055 with some new code, I can probably help some. None of this is my forté really, but I've reversed most of the table locations out of my AP. To the degree to which they are similar, that info may be useful to you, at least after I transfer it off of scraps of paper covering my desk.

However if you want to flash roms, then you need a J2534 device.

 

Seems the SII has switched from the SH7055 to the SH7058. Similar, but doubled ROM/RAM to 1024kb/48kb.

 

http://www.youtube.com/watch?v=K_fNOtIEblE

another update

 

this is s2 only? I suppose I should get cracking for s1. lol

goodbox is nice, but isn't there a limitation that it needs the stock HU?

 

Yes the Goodbox requires the stock HU

 

which makes it sort of a no-go for me. (i plan to upgrade my HU so i can have all the goodies i want)

 

Very Cool! Would one be able to implement something like this with different hardware? I have a Gumstix COM w/ Robostix expansion board sitting around. Bought them hoping to have the time to play around with them, but hasn't happened yet.

 

I am sure you could. The concept is virtually universal, the challenge comes into developing drivers for each of the peripherals that are used to read, send, and handle CANBUS messages.

 

So that dump that you have, was that obtained from the OBD2 via the AP?

 

No, found it online. The AP dumps are encrypted with AES, and though they thoughtfully include the keys in all of their software, I didn't realize that until I started work on that rom.
I really need to acquire a cable from tactrix.com so I can dump/flash without the AP, but my hobby budget is at 0.

 

the cable from tactrix is a j2534, aren't rx8's j1979? Or is that just series one?