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Flash Erase Failure on 28035 sector EFGH

lai jiucai
Prodigy 50 points
Other Parts Discussed in Thread: TMS320F28022

I use a sector H to store parameters.

I erase sector H every time:

Flash_Erase((SECTORH),&FlashStatus);

then program data:

Flash_ptr = (Uint16 *) 0x3F8000;

Length = 30;

Status = Flash_Program(Flash_ptr,MB_Data,Length,&FlashStatus);

I use this method in TMS320F28022,023,026,027and 28032. it work correctly(the" Flash_ptr" and "SECTORH" is modfiy correctly)。

But it fail in 28035:

Program data is success first time (because sector H is all 0xFFFF).

But can't erase H again by:Flash_Erase((SECTORH),&FlashStatus);

I test many times,get the result:

Sector E,F,G,H can erase only by:Flash_Erase((SECTORD),&FlashStatus);

that is erase D will erase D\E\F\G\H.

Please suggest!

jiucai.lai

  • 0
    Prodigy 50 points

    Flash_Erase((SECTORE),&FlashStatus);

    Flash_Erase((SECTORF),&FlashStatus);

    Flash_Erase((SECTORG),&FlashStatus);

    Flash_Erase((SECTORG),&FlashStatus);

    return STATUS_SUCCESS。

    but don't erase sector actually。

  • 0
    Prodigy 50 points

    It is a error when i set Flash_ptr = (Uint16 *) 0x3E8000;

    I use partID to decide what address should used.

    if((chiptype==PARTNO_28032PN)||(chiptype == PARTNO_28032PAG)
    ||(chiptype==PARTNO_28033PAG)||(chiptype==PARTNO_28033PN)){
    Flash_ptr_base=(Uint16 *)0x3F0000;
    }
    else{
    Flash_ptr_base =(Uint16 *) 0x3E8000;
    }

    I loss a "chiptype " in (chiptype == PARTNO_28032PAG),so I always read form (Uint16 *)0x3F0000.

    But I erase (Uint16 *)0x3E8000~0x3EA000; That is,i write sectorD,but erase H.

    so i can't write flash D again before erase D.