TMS320F280049: Question about the flashapi_ex2_sci_kernal example code

Green Deng

Dear team:

Can the routine we provide only write 8 bytes at a time? If my data has 77 bytes in total, how should I modify the program?

Does F28025 have the same Flash_Program() function as F28335 that can directly write a piece of data? At present, F280049 and F280025 can only start writing from multiples of 8 or 4. For example, to erase a flash sector from 0x81000 to 0x82000, writing can only start from 0x81000, but not from 0x81002

Best Regards

over 5 years ago

0 Vamsi Gudivada over 5 years ago

TI__Guru* 87155 points

Hi Green,

F280049 and F280025 Flash APIs can program a max of 8 words at-a-time. All of your questions will be answered by below FAQs.

Please search for

(i) How many bits can be programmed at a time using Fapi_issueProgrammingCommand()?

(ii) When using Fapi_AutoEccGeneration mode, what is the minimum number of 16-bit words that can be programmed?

(iii) When using Fapi_AutoEccGeneration mode, for a given 128-bit aligned memory, can I program lower 64-bits at one time and upper 64-bits at another time?

in the Flash API usage FAQ at https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/951668?-FAQ-FAQ-on-Flash-API-usage-for-C2000-devices

Also, please search for "Why do you use align directive (ALIGN(x)) in the linker cmd files provided in the C2000Ware examples?" in Flash ECC FAQ at e2e.ti.com/.../951658

If you align all the flash mapped sections in the linker cmd file on 128-bit boundary (using ALIGN(8) directive), then kernels should be able to program the 77 words without any problem.

Thanks and regards,

Vamsi

0 Vamsi Gudivada over 5 years ago in reply to Vamsi Gudivada

TI__Guru* 87155 points

Hi Green,

Do you have any further questions?

Can I close this post?

Thanks and regards,

Vamsi

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F280049: Question about the flashapi_ex2_sci_kernal example code