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BF506F FLASH unlock cause crash!

Question asked by popzhuo on May 28, 2014
Latest reply on Jul 14, 2014 by popzhuo

I use following code to unlock the flash sector, these code is OK when I load program from JTAG.

But the program is load from FLASH, the 1st line of unlock code [WriteFlash( 0x20000000, 0x60 )] cause crash.

I don't know why this happened.


// unlock this block

WriteFlash( 0x20000000, 0x60 );

WriteFlash( 0x20000000, 0xD0 );


Hope to get your help! Thank you!



ERROR_CODE WriteFlash( unsigned long ulAddr, unsigned short usValue )



    // disable interrupts before performing the load or store operation

    // [refer warning: page 6-71 BF533 HRM]

    unsigned int uiSaveInts = cli();


    // set the address

    unsigned short *pFlashAddr = (unsigned short *)(ulAddr);


    *pFlashAddr = usValue;


    // Enable Interrupts



    // ok

    return NO_ERR;