Hello All,
I am trying to save data to the emulated EEPROM in the mc9s12xep100mag controller. While debugging I see that the FSTAT has CCIF and ACCER bits 1 (FSTAT = 0xa0) even though I am trying to set it to 0x80. I was wondering what could be the reason for having an access error and how to go about solving it.
if (FSTAT_CCIF == 0U) { /* Is command complete ? */
return ERR_BUSY; /* If yes then error */
}
/* FSTAT: ACCERR=1,FPVIOL=1 */
FSTAT = 0x30U; /* Clear error flags */
FCCOBIX = 0U; /* Clear index register */
FCCOBHI = 0x12U; /* Erase D-Flash sector command */
FCCOBLO = (byte)(((dword)Addr) >> 16); /* High address word */
FCCOBIX++; /* Shift index register */
FCCOB = (word)(((dword)Addr) & 0xFFFFFFFEUL); /* Low address word aligned to word*/
FSTAT = 0x80U; /* Clear flag command buffer empty */
while (FSTAT_CCIF == 0U) {} /* Wait to command complete */
if ((FSTAT & 0x23U) != 0U) { /* Is access error or other error detected ? */
return ERR_NOTAVAIL; /* If yes then error */
}
return ERR_OK;
The FSTAT & 0x23 always is non-zero resulting (as FSTAT is 0xa0) resulting in getting Error.
Please advice.
Best Regards
