topic How to Preserve Non-Volatile Memory with SPT in MCUXpresso Secure Provisioning Tool

How to Preserve Non-Volatile Memory with SPT

Vagni — Mon, 09 May 2022 08:30:02 GMT

My application saves some configuration data in the last sectors of the internal flash memory of i.MXRT1064 cpu.

With MCUXpresso PEmicro debugger 11.4.1 I preserve that memory range during flash programming.

In production I would like to use SPT to program my custom board.

How can I preserve memory ranges during writing bootable images with SPT ?

marek-trmac — Mon, 09 May 2022 11:40:03 GMT

Hi Alessandro,

write script in SEC Tool erases only memory needed for the application.

See in the write script:

@echo ### Erase memory before writing image ###
call "%blhost%" %blhost_connect% -j -- flash-erase-region 0x60000000 23868 9
if errorlevel 2 exit 2

The rest of the FLASH should be kept untouched.