Error occurs trying to erase Flash sector N using TI's example project on concerto F28M35

Sheldon he

Hi everyone,

I am trying to erase flash and rewrite it to do program field upgrade. I start with TI's example code named "flash_programming_m3" on my custom board of F28M35 and the IDE is CCS6.1.3.

In the example, It erase sector L and sector K with no problem. But I need to start with sector N which lie in the front of flash memory to get my code running there.

I modified the example project to erase sector N and got the error below.

"Cortex_M3_0: Can't Run Target CPU: (Error -1268 @ 0x1090001) Device is locked up in Hard Fault or in NMI. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 6.0.222.0) "

It also stopped in some file as shown in the picture below

Could you give me some advise about how to fix the problem? Should I copy some code in sector N to run in RAM? I turn around here for many days.

Regards

/*here is the project I used to test*/

M3_online_upgrade.zip

over 9 years ago

0 Vamsi Gudivada over 9 years ago

TI__Guru* 87145 points

Hi,

You have your .text, resetvectors etc are mapped to Flash N (and other sectors as well). Before you erase the sectors, make sure you copy all the required code/data to RAM to execute. Check your cmd file/map file to see what all are mapped to the sectors that you are planning to erase and move them to RAM before erase.

Thanks and regards,
Vamsi

0 Vamsi Gudivada over 9 years ago in reply to Vamsi Gudivada

TI__Guru* 87145 points

Hi,

Any update on your debug?

Thanks and regards,

Vamsi

0 Sheldon he over 9 years ago in reply to Vamsi Gudivada

Intellectual 420 points

Hi Vamsi
Sorry for late replay, I solved this problem by putting three functions into RAM, they are in the Fapi_UserDefinedFunctions.c of TI's example code , and that example code did not do that for they are not erasing the sector with code flashed in.
Regards
hhelib

0 Vamsi Gudivada over 9 years ago in reply to Sheldon he

TI__Guru* 87145 points

Hi,

Good to know that you moved the necessary functions to RAM. All the code/data/ISRs that exists in the sectors that you are about to erase should be moved to RAM if the application needs it after the corresponding sector erase.

Example did not move those functions since that sector is untouched.

Thanks and regards,

Vamsi

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Error occurs trying to erase Flash sector N using TI's example project on concerto F28M35