topic Re: how to develop bootloader using LIN protocal based on AN4723-S12Z_BootLoader software in S12 / MagniV Microcontrollers

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

NoahXu — Tue, 30 Jan 2024 16:54:05 GMT

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 — Wed, 31 Jan 2024 12:32:10 GMT

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

Best regards,

Daniel

NoahXu — Sat, 03 Feb 2024 07:26:20 GMT

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?

Noah

NoahXu — Sat, 03 Feb 2024 10:34:25 GMT

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?

Noah

danielmartynek — Mon, 05 Feb 2024 09:23:58 GMT

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

danielmartynek — Mon, 05 Feb 2024 12:37:37 GMT

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