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The Flash API for F281x

Michi Yama
Guru 10030 points

Hi,


I have one question regarding the Flash API.

My customer uses F2810. I would like to know the order of the internal Flash programming.
According to my understanding, the programming order is the following.

1. Flash (Sector E -> D -> C -> B -> A)
   Programming is done from low address(0x3E8000) to high address(0x3F7FFF)
   But, except for 0x3F7F80-3F7FF5.
2. OTP(Programming start from 0x3D7800)
3. Finally, 0x3F7F80-0x3F7FF5 and 0x3F7FF8-0x3F7FFF area is programmed.

Is my understanding right?

At present, my customer has one programming failure device.
According to memory dump, the area 0x3F7F80-0x3F7FEA is written 0x0000 data. And the area 0x3F7FEB-0x3F7FFF can't be read the data( ???? is displayed on memory dump).

I think this list shows that lower address than 0x3F7F80 is already programmed. Is my understanding right?

Please advise me.

I appreciate your quick reply.

Best regards,

Michi

  • 0
    TI__Guru 74490 points

    Michi,

    In terms of order of programming the sectors, it really depends on which sectors are being used by you customer.  From your description the device is in a "locked" state where there is something non 0xFFFF in the password locations(agreeing with your description).  These are in Sector A in addition to regular flash memory. 


    If programming was interrupted while sector A was being programmed it is possible that the sector got corrupted and the CSM along with it locking the device.

    I would start here on the processor WIKI for documentation on this:

    http://processors.wiki.ti.com/index.php/Category:Flash_for_C2000

    Best,

    Matthew