comunication problems (still!)

[danncus]

Hi Quick resume,

friend built board
I fitted edis4 VR and TPS to car and tested fine without ECU
I fitted ECU which went bang (no comms!)
found 10v on boad
turned round diode now 5v on board
fitted new KX8 from RS ( this i understand is like a blank hard drive) still no comms
I was then told my 9 pin lead was incorect (NULL type)
tried new lead still no comms
Fitted new MAX 232 chip still no comms.

i am now running out of things to check / change

any advice would be appreciated.

[Oliver Sedlacek]

If you've fitted a blank chip then you need to program it with the Megajolt firmware before you can talk to it. The programming program is a Freescale utility called hc08sprg.exe.

[danncus]

Hi oliver,

i have tried using this utility, but it comes up with somthing like "waiting for re set"

any ideas?

[brentp]

This is not quite correct.

hc08sprg.exe requires a 'boot loader' to be installed on the chip. Your blank chip does not have this bootloader installed on it.

If you want to order another chip I can get one out to you in a day or two.

Thanks,
Brent

[danncus]

thanks for the reply brent,

i have my last event this weekend so i fear that it wouldn't give me time to setup. how do i put boot loader on my chip?

Thanks

danny

[brentp]

There's a hardware programmer that's used to get the bootloader installed. it's a seperate piece of hardware than the MJLJ board.

Once the bootloader is installed, the MJLJ board can handle uploading of new MJLJ firmware. Hence the moniker 'boot loader'.

[danncus]

Thanks - new processor on order!

[danncus]

is there any way i can check the comms to board with a clean chip? one of those ping things i hear about spoken in hushed voices by it techies?