BDM Protocol Documentation

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BDM Protocol Documentation

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BarrowWight
Contributor I

I have recently got my hands on an old board that uses an HCS12 processor that has a BDM interface. Unfortunately, I do not have any of the boards that are supported by the excellent USBDM tool ( https://github.com/podonoghue/usbdm), but I do have plenty of other development boards lying around that I could implement into a bare-bones BDM tool.

 

Is there any documentation about how the BDM Protocol actually works? Something with logic diagrams and a list of the byte for different commands that BDM supports?

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Mindblaster
Contributor III

Yes, it's mostly part of the chips documentation package. Here attached one for S12 family.

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pedrooliveirajr
Contributor II
Do you have for MPC5xx? I'm trying to find it but I still couldn't find any documentation like this one you mentioned before
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