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Piccolo B TMS320F28035 erasing CSM Password

Thomas Hattermann
Prodigy 250 points

Other Parts Discussed in Thread: TMS320F28035

Hi,

I tried to use the CSM on the TMS320F28035 with CCS4.

- I can lock the Device.

- I can unlock the Device.

- When I try to erase the Flash Sector A I don't get an error message.

- 0x3F7000 - 0x3F7FEF are erased

But: 0x3F7FF0 - 0x3F7FF5 are still 0x0000

        0x3F7FF6 - 0x3F7FF7 are 0x007F 0x7D64 ????

      at that address I get a Flash programming error whe I try to reprogram the Flash

       0x3F7FF8 - 0x3F7FFF here I can still read the Password.

Thanks for help

Thomas Hattermann

  • 0
    Prodigy 250 points

    Hi,

    I think the problem is the address range 0x3F7F80 - 0x3F7FF5.

    If it is programmed to 0x0000 with no password set, CSS4 cannot erase the flash.

    By the way: My own software placed to RAM by CSS4 calling the Flash-API can erase the Flash and solve the problem.

    Thomas Hattermann