i need a developer that can read/write for a special project that is controlled by a sh7052f cpu...anyone know of anyone who can help..or may be interested??

 

Can you tell us a little more about the project, or would you prefer to have it off the public forum?

I doubt I have time to help in detail as I have some big projects coming up, but if you want to run any ideas past me I'd be happy to give an opinion as I've spent about 3 years dissasembling and writing SH2 code for the Evo, particularly in serial comms/DMA/interrupts/signal processing/memory allocation.

tephra & mrfred may or may not be able to help, and both have some large SH2 projects under their belts on here.

l2r99gst has consolidated and improved a lot of SH2 work, is far too modest about his abilities and has done a lot of original work on signal calibration.

logic has done some ace work too.

mattjin has done some superb logic analysis to find maps that none of us imagined were there and tied it to disassembly.

Bez Bashni was last going diamond mining when I heard from him about a year ago.

Hope I've not forgotten any of the SH2 people.

 

it is for a 600 hp suzuki.the ecu uses the sh7052f cpu,i already have a dissembled .bin and some incomplete .ini files and a automatic .xml generator that works excellent.I want to add some functionally like boost control and 3-bar map sensor capibility.I have ida and just about everyother tool available. i also have the contants in .s19 and .mot as well.does that help???

 

Are you a contributor to http://www.activeboard.com/forum.spa...mID=401478&p=2 ?

Do you have unused analog inputs? You may well be able to piggyback off a standard ADC routine to get your MAP sensor into a variable for your use.

I've used a TIP127 darlington transistor with a base resistor to drive a boost control solenoid from a microcontroller's logic output before. You could either use an output and make it PWM driven, or if you have a fast main engine control loop you could use that to control the PWM. If you wanted to run the solenoid at say 10Hz, you'd need a 500Hz loop to run it off to give any accuracy doing it in software. However, setting up PWM is not something I've done on SH2, but the hardware manual doesn't make it look hard. On the 8 bit AVR I used a BASIC compiler to control PWM and that was no problem to get going. Once you calculated your next wastegate duty cycle (a PID loop and a few tables are easy to write) you just wrote it to a buffered output address. Trouble is to tune boost you could really do with live mapping.

Since you have quite a high specific output, your turbo may not be terribly easy to control, never mind the direction of your bike LOL, compared to a car where you can just watch a gauge from your armchair and lift the throttle if it gets too exciting.

Hope these ideas are useful and I'm not telling you how to "suck eggs", not sure if that phrase is used in America

 

i am a senior member and beta tester for the older stuff.....thanks for your input,you seem well versed in the code........