topic Bootloader Problem in MCU Bootloader

Bootloader Problem

andreasruetten — Tue, 06 Apr 2021 20:47:56 GMT

Hello i have a strange problem with my secondary bootloader.

The user app resides from 0x0 - 0x1ffff

The Bootloader from 0x20000 - 0x30000

The user app starts from reset.

The bootloader is called by the user app.

The bootloader erases 0x0 - 0x1ffff and program the sectors with the new data via uart data.

After all data transfered, it makes an reset via wdog.

But the new user app won't start.

To check the data, i read out over swd with an segger j-link.

The data looks okay, and when i erase memory with j-link and program the same

data, that i readout before, it works !!!

So the data programmed through my bootloader are Okay.

Any hints?

Why does a complete chip erase do the job?

Andreas

Re: Bootloader Problem

nxf56274 — Wed, 07 Apr 2021 01:58:06 GMT

Hi,

Which mcu do you use? Do you try to set MSP and PSP to jump?

Have a great day,
TIC

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Re: Bootloader Problem

andreasruetten — Wed, 07 Apr 2021 08:29:25 GMT

we use LPC1769.

The Problem is not the jump, because the bootloader begins at 0x20000 and is called from the
user app.

The Problem is,that after IAP the user App, from 0x00 to 0x1ffff the user app won't start after Reset or Powerup.

The user data after IAP seems to be OK.

Readout via swd -> erase chip -> write back same data -> after reset the user app runs ....

Andreas

Re: Bootloader Problem

nxf56274 — Wed, 07 Apr 2021 09:03:31 GMT

Hi,

Please repost your questions in this link -- https://community.nxp.com/t5/LPC-Microcontrollers/bd-p/lpc

Your case is assigned to kinetis tse. But your product is LPC. So you have to repost.

Have a great day,
TIC

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Re: Bootloader Problem

andreasruetten — Wed, 07 Apr 2021 09:06:19 GMT

Ok,

my mistake ...