s12zvm bootloader

[sohyunjang]

Hi, I use s12zvm MCU.

And I want to make bootloader.

So, I refer to AN4723 and S12ZVM_Bootloader of AN4723SW.

I need to add the code of AN4723SW.

and compile Erros is occured.

Out of allocation space in segment ROM at address 0xFFFAD8

The original bootloader code's ROM aera is

      ROM           = READ_ONLY   0xFFF800 TO 0xFFFBFF;   // 1K for the bootloader FLASH-ONLY functions. Each 0x200 is 512
      SHADOW_ROM_S  = READ_ONLY   0xFFFC00 TO 0xFFFDFF;   // 512 for funtions that will be copied to RAM

So, I want to increase the area of ROM.

Is it correct to make the following changes?

   ROM           = READ_ONLY   0xFFF600 TO 0xFFFBFF

and I change the code, in main.h

#define FLASH_SECTORS_TO_ERASE 251  /* 256 total - 1 interrupt vector - 4 (2k) for Bootloader = 251. Each sector is 512 bytes */

Do I need to change other code too?

thank you.

[dianabatrlova]

Hi,

Let me apologize for the delay.

I have no error when I used your modifications.

This error may mean the space of the ROM is not big enough for your code. 

I would like to recommend the newer application note AN12086 - Bootloader for the S12Z devices,

see Simple Serial Bootloader for S12Z - AN draft 

I hope it helps you.

Best regards,

Diana