S32K3xx DEMO bootloader CRC issue during flashing

David_Zhou — Wed, 06 Nov 2024 08:48:20 GMT

Hello NXP,

I am facing a CRC check routine failure during the flashing when I am learning the DEMO bootloader, more detail are the following:

1. Hardware: S32K3X4EVB-T172

2. Software:

a). Demo FBL: unified_bootloader_demo_v2.1 -> Download from NXP website.

b). Demo App: S32K344_CAN_App_RTD200 -> Download from NXP website.

c). My App -> Just a simple app with 1 CAN message periodic sending which works well without a FBL.

d). Flashing tool: ECUBus -> Download from NXP website.

3. Issue description:

a). When I was using the combination of DEMO FBL + DEMO app + ECUBus, everything is fine: flashing ok, demo app running fine, I can also flashing muti-times.

b). But when I try to flash my app -> of course adaption was correctly done according the DEMO app: Link file changed. The app CRC check routine failed.

4. What I did

a). I checked the FlashDriver CRC check which is successfully passed, try to find what is the difference. So the Start Address(0x440200) and Length(0x9074) my app for CRC calculation are fine as I expected, which means it match my app target files they have same mapping. check below screenshot.

b). I also export the dump file of memory. They are also fully matched which means my app was successfully flashed.

c). I saw the "MAX_ONCE_CHECKSUM_SIZE" is 100000, the Demo app is bigger than 100000 which means CRC will calculate twice, my app is less than 100000 so I guess this is the only difference.

d). ECUBus side, I didn't do any change, I guess it will automatically calculate CRC according to size of bin file.

Re: S32K3xx DEMO bootloader CRC issue during flashing

lukaszadrapa — Fri, 08 Nov 2024 07:30:05 GMT

Hi @David_Zhou

I'm sorry but Unified bootloader is unofficial demo only shared by individual on the community. It's provided AS IS with no guarantees and no support (there's also a disclaimer). It's not production code. Currently we do not have resources to support this.

Regards,

Lukas

Re: S32K3xx DEMO bootloader CRC issue during flashing

David_Zhou — Mon, 11 Nov 2024 01:45:10 GMT

Understood, thanks!

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S32K3xx DEMO bootloader CRC issue during flashing

Re: S32K3xx DEMO bootloader CRC issue during flashing

Re: S32K3xx DEMO bootloader CRC issue during flashing