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Microsquirt firmware and bootloader on MS2 daughterboard

Posted: Sun Jun 08, 2014 9:05 am
by ak77
Hi,

I'm using a microsquirt module in my current project and it's working nicely. Today I saw this new optional code message in the MS2 firmware page:
Optional Code (with mods*):
For those with crankshaft toothed wheels with a cam input or more than one ignition coil, version 3.830a MicroSquirt® code can potentially be used (it is intended for a MicroSquirt® controller, but can be used on a MS-II™ controller with significant hardware and firmware modifications*):
I still have my old MS2 + V3.0 PCB around and I need to squirt another engine pretty soon so I would like to test this out. I already did modifications to be able to use it, but it seems to need the microsquirt bootloader:
Once you have modified your MS-II™ controller to be compatible with the MicroSquirt® dual spark inputs and outputs, you will need to change the bootloader on your processor to be able to load this 3.830a code. Burning the MicroSquirt® bootloader to an MS-II™'s processor can be done, but requires specialized and expensive equipment. Your vendor may be able to do this for you, or a developer might be able to help you from one of the forums.
So, here I am ;). How do I get the latest microsquirt bootloader? I have a BDM ready, so no problems there...

The mods that I made are pretty simple. I removed the 74HC chip from the MS2 board which removes the connection from the inverted injector outputs. I will be using the alt injector outputs with a non-inv mosfet driver on the v3.0 pcb. The pwm2 (ign2) signal is jumpered to the inv inj 2 output.

Thanks in advance!