CC2530 Writing to CODE memory from CPU

stephen cline

I am attempting to write to the CODE memory amidst my program, and the writes seem to be having no effect on the data stored in the flash, here is my code for writing:

uint8 writePairID(uint16 pairID)
{
   uint8 datas[2];

   //Break input down into bytes for fast transfer to FWDATA
   datas[0] = (uint8)(pairID & 0xFF);
   datas[1] = (uint8)((pairID >> 8) & 0xFF);

   //Disable interrupts
   EA = 0;

   //Erase Block 14 (starts @ 0x7000)
   FADDRH = (uint8)(14 << 1);
   FCTL |= ERASE;
   while(FCTL & BUSY);

   //Load address to write first byte of word to (0x7000)
   FADDRH = 0x70;
   FADDRL = 0x00;

   //Perform write of pair ID
   FCTL |= WRITE;
   FWDATA = datas[0];
   FWDATA = datas[1];
   FWDATA = 0x00;
   FWDATA = 0x00;

   //Wait for operation to finish
   while(FCTL & FULL);
   while(FCTL & WRITE);

   //Re-enable interrupts
   EA = 1;

   //Return 0 if operation fail
   if(FCTL & ABORT)
     return 0;

   else
     return 1;
}

I know the block is erased properly and when I attempt to read out the value I am attempting to store I read 0xFF, which is the "reset value"

Any helpful hints?

over 15 years ago

0 Cengiz Gezer over 15 years ago

Prodigy 10 points

Hi,

What about changing to

//Load address to write first byte of word to (0x7000)
FADDRH = (uint8)(14 << 1);
FADDRL = 0x00;

Best regards

0 Vasco Carvalho over 12 years ago in reply to Cengiz Gezer

Prodigy 20 points

Hello

The code above works? I have the same code and I can not write

unsigned char erase_page_num = 15; //page to erase

///* Erase one flash page - This works
EA = 0; ///* disable interrupts
while (FCTL & 0x80); //Busy
FADDRH = erase_page_num << 1; // select the flash page via FADDRH[7:1] bits
FCTL |= 0x01; // set FCTL.ERASE bit to start page erase
while (FCTL & 0x80); //* optional: wait until flash write has completed (~20 ms)
EA = 1; ///* enable interrupts
//apagar páginas

//Write into memory page 15 - This don't work
EA = 0; // disable interrupts
//Load address to write first byte of word to (0x7800)
FADDRH =(uint8)(erase_page_num << 1);
FADDRL = 0x00;

//Perform write of pair ID
FCTL |= 0x02;//Write
FWDATA = 0x55;
FWDATA = 0x44;
FWDATA = 0x00;
FWDATA = 0x00;

//Wait for operation to finish
while(FCTL & 0x40);//Full
while(FCTL & 0x02);//Write
EA = 1;

//Read into Code memory 0x7800 - - This works
uint16 offset=0xF800;
uint8 *pData =(uint8 *)(offset);

value = *pData;

What I'm doing wrong?

Thank you

0 awadhesh maurya over 12 years ago in reply to Vasco Carvalho

Prodigy 30 points

Hello,

Did you get any solution to write in flash.

I cannot write in flash using above code. I also not getting FCTL .FULL or FCTL.BUSY set in case of erase, but it erage 0 or 1 page. Below is the code:

/* disable interrupts */

   EA =0;
    while (FCTL & 0x80);                     /* poll FCTL.BUSY and wait until flash controller is ready */
    FADDRH = erase_page_num << 1;             /* select the flash page via FADDRH[7:1] bits */

    FCTL |= 0x01;                             /* set FCTL.ERASE bit to start page erase */

    while(FCTL & 0x80)                         /* optional: wait until flash write has completed (~20 ms) */
    {
        LAMP2 = 1;          // output pin led
    }
    EA = 1;

LAMP2 will never glow, but page number 1 is erased.

What may be reason. Can anyone help me?

Thank you.

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CC2530 Writing to CODE memory from CPU