EEPROM writing with global address

Gowri — Wed, 10 Mar 2010 23:31:15 GMT

Hello All,

I am using S12XEP100 for one of our application,

I have requirement to download block parameters which are addressed in global addressing to EEPROM area.

EEPROM emulation has been enabled prior to download.

I am trying to use the following logic which was not working

          while (FSTAT_CCIF == 0) { }
     if(FSTAT&(FSTAT_FPVIOL_MASK | FSTAT_ACCERR_MASK))
     {
               /* Clear any error flags*/
                FSTAT |= (FSTAT_FPVIOL_MASK | FSTAT_ACCERR_MASK);
     }

            /* Write the command id / ccob0 */
             FCCOBIX = 0;
           FCCOBHI = 0x11;                            /*write command for D-Flash*/
           FCCOBLO = page;

           FCCOBIX=1;
           FCCOB = addr;                                /* Write next data word to CCOB buffer. */
           FCCOBIX=2;
           FCCOB = (uint16)(*(dataptr));                               /* Write next data word to CCOB buffer. */
           FCCOBIX=3;
            FCCOB = (uint16)(*(dataptr+1));                           /* Write next data word to CCOB buffer. */
           FCCOBIX=4;
            FCCOB = (uint16)(*(dataptr+2));                           /* Write next data word to CCOB buffer. */
           FCCOBIX=5;
            FCCOB = (uint16)(*(dataptr+3));                           /* Write next data word to CCOB buffer. */

           /* Clear command buffer empty flag by writing a 1 to it */
           FSTAT |= 0x80;
           //FSTAT |= FSTAT_CCIF_MASK;

           while (FSTAT_CCIF == 0) {

           }   /* wait for the command to complete */

Can any one help me regarding this.

With Thanks & Regards,

Gowrisankar Loganathan

Re: EEPROM writing with global address

Bajo — Thu, 18 Mar 2010 19:19:00 GMT

Hi Gowri.

I recommend you to read AN3743.

I hope it helps.

Re: EEPROM writing with global address

Gowri — Mon, 22 Mar 2010 20:43:29 GMT

Hello Bajo,

I checked with AN3743, it only recommends to use logical address, but I am looking for writing the EEPROM data using global address.

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