TMS320F28033: Flash API in BootROM

AlanChen

Part Number: TMS320F28033
Other Parts Discussed in Thread: C2000WARE

I'm using Flash API within the boot ROM, it'll erase and program the Flash in the Bootloader. But Flash is protected by security password, and the Bootloader can't operate Flash using API functions. One solution is to copy Flash API from boot ROM to secure zone SARAM, I don't know how to copy them?

over 5 years ago

0 Kevin Allen18 over 5 years ago

TI__Mastermind 45606 points

Hi Alan,

Please see the prior post, and subsequent linked posts, in the below.

https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/402181

The ROM Flash API cannot be copied to RAM. You can copy the Flash API to RAM from Flash however. See the C2000ware example in the below directory and activate the "Use_SW_API" build configuration in CCS:

C:\ti\c2000\C2000Ware_3_01_00_00\libraries\flash_api\f2803x\example_ccsv5

Best,

Kevin

0 AlanChen over 5 years ago in reply to Kevin Allen18

Prodigy 70 points

Hi Kevin,

Thanks for your answer!

I seems I meet the same issue, as there is only 4K flash assigned to the Bootloader, which has code with CAN, RS485, SPI driver, the Flash API is too big to fit in the bootloader. The OTP is not big enough to fit the Flash API functions.

Regards

Alan Chen

0 Kevin Allen18 over 5 years ago in reply to AlanChen

TI__Mastermind 45606 points

Hi Alan,

Are you needing to use both the flash program and erase functions of the API?

You can find the documented code size of the Flash API in section 21 "Codesize Information" of the Flash API guide within C2000ware:

C:\ti\c2000\C2000Ware_3_01_00_00\libraries\flash_api\f2803x\docs

Best,

Kevin

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TMS320F28033: Flash API in BootROM