AM62A3: NorFlash S28HS512T sector erase failed

ming li

Part Number: AM62A3

Tool/software:

hi TI experts

Now we use norflash memory S28HS512T which is accessed through AM62A3 OSPI interface in our customized board, if using " int32_t Flash_eraseBlk(Flash_Handle handle, uint32_t blockNum) " function( erase 256k) , the used flash block can be erased successfully and user data can be wrote to Nor flash device correctly;

but if use "int32_t Flash_eraseSector(Flash_Handle handle, uint32_t sectorNum) (erase 4K)" function, the erase and write operation will be failed.

in fact, most time we may just modify a few bytes data in one sector; before erasing flash, we can copy one sector data into global buffer , then modify some bytes data according to the data

position offset in the buffer , finally write data stored in buffer to the specified sector area, there is no necessary to erase block area every time ;

so why call the "Flash_eraseSector()" function can`t erase data as expected;

1 month ago

0 Vaibhav Kumar 1 month ago

TI__Mastermind 26743 points

Hello,

Allow me sometime to check the implementation of erase sector.

Regards,

Vaibhav

0 Vaibhav Kumar 1 month ago in reply to Vaibhav Kumar

TI__Mastermind 26743 points

Hello,

I would request you to loom through the file: flash_nor_ospi.c

Please see how Flash_norOspiEraseSector is used.

Please refer the latest AM62A MCU PLUS SDK.

FYI, I am pointing you to look through this:

Let me know if this helps.

Regards,

Vaibhav

0 ming li 1 month ago in reply to Vaibhav Kumar

Prodigy 40 points

hi Kumar

The MCU SDK is installed in windows operation system and its version is V9.2 ;

i aslo try to install the latest version 10.0.0.14 of MCU SDK ;

but i can`t find the function Flash_norOspiEraseSector(...) as you mentioned above;

i can only find " int32_t Flash_eraseBlk(Flash_Handle handle, uint32_t blockNum)" and "int32_t Flash_eraseSector(Flash_Handle handle, uint32_t sectorNum)"

0 Vaibhav Kumar 1 month ago in reply to ming li

TI__Mastermind 26743 points

Hello Ming,

Please look through the file flash_nor_ospi.c in latest SDK, to search for the API named as Flash_norOspiEraseSector()

Regards,

Vaibhav

0 ming li 1 month ago in reply to Vaibhav Kumar

Prodigy 40 points

hi Kumar

i have replace flash erase function with "Flash_norOspiEraseSector()" in my project, but the erase and write operation is also failed.

as the screenshot show below , the "gFlashConfig" parameter is generated by syscfg file in CCS IDE;

0 Vaibhav Kumar 1 month ago in reply to ming li

TI__Mastermind 26743 points

Hell Ming,

Can you please tell me about the values that is offset, sector_val and page in your case?

I can try this on the AM64x TI EVM as it has the NOR flash part which you are using along with AM62A.

Regards,

Vaibhav

0 ming li 1 month ago in reply to Vaibhav Kumar

Prodigy 40 points

hi Kumar

The flash offset is 0xf80000 , sector id is 3968, page id is 0;

0 Vaibhav Kumar 1 month ago in reply to ming li

TI__Mastermind 26743 points

Hello Ming,

Based on the above information, you want to just erase 4096 bytes and not a whole block right?

Regards,

Vaibhav

0 ming li 1 month ago in reply to Vaibhav Kumar

Prodigy 40 points

hi Kumar

we hope the best option is that block erase and sector erase command can both be useful, in most time , maybe the sector erase command can meet our requirement,

but in software upgrade scenario， the block erase can be more effective

0 Biao Li 1 month ago in reply to ming li

TI__Expert 4840 points

Hi Vaibhav,

Cusrtomer want to use both 4K erase, and block erase based on the SW usercase, so pls help support. Thanks for support.

BR,

Biao

0 Vaibhav Kumar 1 month ago in reply to Biao Li

TI__Mastermind 26743 points

Hello Ming and Bioa,

Thank you very much for the clarification I needed.

So as a part of next steps from my end:

1. I am going to try erasing a block and see if the operation is successful.

2. I am going to try erasing a sector and see if the operation is successful.

In either of the cases, if it fails, then I will debug on my TI EVM setup as to where the failure happens.

You can expect responses from my end in sometime.

Thanks,

Vaibhav

0 Vaibhav Kumar 1 month ago in reply to Biao Li

TI__Mastermind 26743 points

Hello Ming,

Can you calculate which offset will sector number 3968 fall into? This way I can see in the memory browser if the erase operation is happening properly or not.

Is this offset F80000 = 3968 * 4096?

FYI, erase block works just fine.

Regards,

Vaibhav

0 Vaibhav Kumar 1 month ago in reply to ming li

TI__Mastermind 26743 points

Hello Ming,

I have tested this on my end and it turns out that the Flash_eraseSector is broken and does not erase the required sector.

The workaround is to continue using block erase as of now and as a next action step I have raised a JIRA for this.

A JIRA has been created for erasing sector failure, as it is not successful.

I will update here on this thread, once a fix has been proposed.

Thanks for your patience.

Regards,

Vaibhav

0 ming li 12 days ago in reply to Vaibhav Kumar

Prodigy 40 points

hi Kumar

is there any method to fix the sector erase issue.

0 Vaibhav Kumar 11 days ago in reply to ming li

TI__Mastermind 26743 points

Hi Ming,

I have asked for an update from the software team on this, currently there has been no updates to the JIRA ticket soo far.

Once I hear back from them I will get back to you.

Regards,

Vaibhav

0 zhaoneng deng 9 days ago in reply to Vaibhav Kumar

Prodigy 30 points

At present, when we use the write function of flash, we can only use the 256k erase interface , and the erase time is about 2s, which will cause all tasks of MCU to be stuck, but the program will continue to run after the flash operation is completed.

I hope you can come up with a solution。We are in a hurry.