RE: TMS320F28375D: Not able to program 0x96550B5A value to boot control bit in DCSMOTP region

Trung Dao

Hello Vamsi

My name is Trung Dao.

I wrote boot code to program OTP this device.

The other location in OTP work fine. However we have issue to program 0x7801E(1-BOOTCTRL). After programmed still have 0xFF.

The function for program :oReturnCheck = Fapi_issueProgrammingCommand((uint32 *)u32Index, au16DataBuffer, 8, 0, 0, Fapi_AutoEccGeneration);

Please help to check the function :Fapi_AutoEccGeneration . Is this valid to program 0x7801E(1-BOOTCTRL) OTP.

May be have issue ECC relate to this issue :

e2e.ti.com/.../cannot-read-bootctrl-register-to-verify-contents

Best Regards,

Trung Dao

over 3 years ago

0 Charles Roberson over 3 years ago

TI__Genius 15080 points

Hi Trung,

It seems the ECC is not forced to program for the F2837x, as per Vamsi's last post on the related thread. I see that 0x80000 is used in the example to start the programming, yet with the address given as OTP. The user guide (https://www.ti.com/lit/ug/spruhm8i/spruhm8i.pdf) shows that Zone 1 OTP Flash 0x7801E(1-BOOTCTRL) should be able to be programmed. For FAPI linkpointer location (ex. 0x78000) should not be programmed as ECC (per flash API guide for F2837, https://www.ti.com/lit/ug/spnu629a/spnu629a.pdf).

Is it possible all 1's were programmed there previously? Were you able to follow the possible solutions listed in the thread posted?

Thanks,

Charles

0 Trung Dao over 3 years ago in reply to Charles Roberson

Prodigy 30 points

Charles,

Thanks for reply.

I found this function work OTP . We must have address aligned 64-bit and Fapi_DataOnly

oReturnCheck = Fapi_issueProgrammingCommand((uint32 *)u32Index, au16DataBuffer, 4, 0, 0, Fapi_DataOnly);

Best Regards

Trung

0 Charles Roberson over 3 years ago in reply to Trung Dao

TI__Genius 15080 points

Hi Trung,

That's great, let me know if you need any further assistance.

Regards,

Charles

C2000™︎ microcontrollers

C2000 microcontrollers forum

RE: TMS320F28375D: Not able to program 0x96550B5A value to boot control bit in DCSMOTP region