how to develop bootloader using LIN protocal based on AN4723-S12Z_BootLoader software

[NoahXu]

Dear support , 

 now i am developing bootloader for S12ZVML128 MCU.

 ia read through the AN4723 and find the SCI1 is used, if sci1 is not available but LIN is available, how can i modify the AN4723SW?

[danielmartynek]

Hello @NoahXu,

I'm not sure what you mean.

The LINPHY can be routed to SCI0 only.

There is such a bootlaoder already:

AN5389 S12Z MagniV LIN Bootloader

https://www.nxp.com/docs/en/application-note/AN5389.pdf

https://www.nxp.com/docs/en/application-note-software/AN5389SW.zip

Best regards,

Daniel

[NoahXu]

Hi,Daniel

another problem during compile of this AN5328SW ,seems the stack size is set wrong for this demo.

how would you suggest to change?

BR

Noah

[danielmartynek]

Hi Noah,

Indeed the compiled code is too big.

Have you tried increasing the size SHADOW_ROM_S and SHADOW_RAM_S sections:

You could also use a higher optimization level:

Regards,

Daniel

[NoahXu]

Hi, Danielmartynek

  thanks for reminder, this AN5389SW is what I need.

  when i try to use this SW, i found the PC application program is difficult to understand.

  how to use this S12Z_MagniV_Serial_Bootloader_Interface.jar ?

  should i develop some windows java application?

BR

Noah

[danielmartynek]

Hi @NoahXu,

The S12Z_MagniV_Serial_Bootloader_Interface.jar interface is for the SCI bootloader.

For the LIN bootloader, you need a LIN master that would send the data

The master should send the S-record file data in frames of 8 bytes with the ID reserved for reception of data, as explained in AN5389.

Regards,

Daniel