boot loader

[chenq]

how to use freemaster software to download the firmware into the S12 mcu? Is there any document?

[ZhangJennie]

Hi David,

Freemaster is debug monitor and data visualization tool. It is for displaying variables changing on an oscillooscope-like display. We don't use it as bootloader.

If you want to use bootloader program flash via SCI, you can refer

https://www.nxp.com/docs/en/application-note/AN2548.pdf 

or

https://www.nxp.com/docs/en/application-note/AN3275.pdf 

or

https://www.nxp.com/docs/en/application-note/AN4258.pdf 

You can also search out related bootloader project from nxp web site

Have a great day,
Jennie Zhang

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[chenq]

hi,lady Zhang

Thanks for your reply.

Recently I need write a bootloader program to upgrade the firmware via CAN not SCI.

acoording to the document AN4860 ， MC56F827XX family is supported to write flash via FreeMaster，but not S12 family.

Have a nice day,

David Chan

[ZhangJennie · Accepted solution]

Hi David,

There is no CAN bootloader for HCS12, only I know is CAN bootloader for S12Z

https://www.nxp.com/docs/en/application-note/AN4723.pdf
https://www.nxp.com/docs/en/application-note-software/AN4723_SW.zip

I would suggest your combine AN4258 with it.

More information, refer this article:
https://community.nxp.com/docs/DOC-102620

Have a great day,
Jennie Zhang

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