TMS570LS3137: Checksum of the flash content

Szymon Markiewicz

Part Number: TMS570LS3137

Hi,

I implemented bootloader example code provided here. I just want to check with checksum if the flash content flashed successfully. From spnu501h reference guide i have read that Flash API provides checksum calculation. When I try to use it gives me numbers different than calculated with algorithm provided here.

So my question is, what variant of Fletchers checksum does Flash API use? Maybe some initial value is used?

Regards,

Szymon

over 5 years ago

0 QJ Wang over 5 years ago

TI__Guru**** 197336 points

Hello Szymon,

If you want to check the CRC of the application image in Bootloader, I suggest to use the HW CRC module to calculate the CRC. Fletchers checksum takes much longer than HW method.

Fletcher checksum is used in FEE driver to calculate the checksum after writing data to EEPROM. It is not a good way to calculate the CRC for your application.

0 Szymon Markiewicz over 5 years ago in reply to QJ Wang

Prodigy 30 points

Thanks! I have implemented CRC64 successfully.

Have a nice day

Szymon

Arm-based microcontrollers

Arm-based microcontrollers forum

TMS570LS3137: Checksum of the flash content