TMS320F280039C: TMS320F280039C: F280039C - About Flash write operation using Flash API

Tomotaroh Kohro

Part Number: TMS320F280039C

Hello Support team.

This question is about Flash erase using Flash API (FAPI_F28003x_COFF_v1.58.01.lib).

Could you please explain why the second argument (pu16DataBuffer) of Fapi_issueProgrammingCommand() needs to be placed in 128-bit align?

Also Could you please explain why the third argument (pu32CheckValueBuffer) of api_doVerify() needs to be placed in 128-bit align?

For example, customer is understanding that system cannot write such as the below.

Is it correct ?

Best Regards

KORO

over 1 year ago

0 Vamsi Gudivada over 1 year ago

TI__Guru* 84510 points

Hi Koro,

I will reply to you tomorrow.

Thanks and regards,

Vamsi

0 Vamsi Gudivada over 1 year ago in reply to Vamsi Gudivada

TI__Guru* 84510 points

Hi Koro,

Based on a few previous customer queries, we wanted to make it simple and hence mentioned that those data buffers have to be 128-bit aligned.

However, as long as the address of the data buffer starts on a even address, it should be fine.

The diagram that you copied from customer is good to implement - no issue with that.

Thanks and regards,

Vamsi

0 Tomotaroh Kohro over 1 year ago in reply to Vamsi Gudivada

TI__Genius 11665 points

Hello Vamsi-san

> Based on a few previous customer queries, we wanted to make it simple and hence mentioned that those data buffers have to be 128-bit aligned.

But your answer is that an even address can be used.

if customer asked TI if TI has plan to modify this document, how we can answer it ?

Best Regards

KORO

0 Vamsi Gudivada over 1 year ago in reply to Tomotaroh Kohro

TI__Guru* 84510 points

Hi Koro,

A clarification here in this forum should be enough I hope. If not, please let them know that I wrote that guide. 128-bit alignment does not hurt - however, if the user is not able to maintain that, then an even address using ALIGN(2) should do.

Thanks and regards,

Vamsi

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F280039C: TMS320F280039C: F280039C - About Flash write operation using Flash API