Dear Team,
Requesting assistance.
Read and write not reflected in PE- debugger while free running.
Step by step debugging read and write is reflected but while reading second read is not working fine.
main function :
bus clock is 32m
void main()
{
byte data,data1;
HW_EEPROM_Init();
HW_EEPROM_EraseSector(0x100000UL);
HW_EEPROM_WriteWord(0x100000UL,arr[0]);
//for(i=0;i<100;i++){};
HW_EEPROM_WriteWord(0x100002UL,arr[1]);
data=EEPROM_Read_byte(0x100000UL);
data1=EEPROM_Read_byte(0x100002UL); // problem with this write
}
init function:
EEPROMDR_etErrorStatus_t HW_EEPROM_Init(void)
{
uint8_t ucRegValCheck = 0U;
EEPROMDR_etErrorStatus_t etErrorStatus = EEPROMDrv_ERR_OK;
/* Set up Clock Divider Register */
FCLKDIV = 0x1FU;
ucRegValCheck = FCLKDIV;
if ( ucRegValCheck != 0x1F)
{
etErrorStatus = EEPROMDrv_ERR_FAULT;
}
INT_CFADDR = 0x58U; /*(Vector base + 0x160) flash command Interrupt Request Configuration */
ucRegValCheck = INT_CFADDR;
if( 0x58U != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
/* Int. priority initialization */
INT_CFDATA0 = 0x04U;
ucRegValCheck = INT_CFDATA0;
if ( 0x04U != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
return ( etErrorStatus );
}
EEPROMDR_etErrorStatus_t HW_EEPROM_WriteWord( uint32_t ulAddress,uint16_t usData )
{
uint16_t ucRegValCheck = 0x00;
EEPROMDR_etErrorStatus_t etErrorStatus = EEPROMDrv_ERR_OK;
if ( 0U == FSTAT_CCIF )
{ /* Is reading from EEPROM possible? */
return EEPROMDrv_ERR_BUSY; /* If no then error */
}
/* Clear error flags */
/* FSTAT: ACCERR=1,FPVIOL=1 */
FSTAT = 0x30U;
/* Three FCCOBn registers will be loaded */
FCCOBIX = 2U;
ucRegValCheck = FCCOBIX;
if ( 2U != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
/* Program D-Flash command */
FCCOB0HI = 0x11U;
ucRegValCheck = FCCOB0HI;
if ( 0x11U != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
/* High address word */
FCCOB0LO = ( uint8_t ) ( ( ( uint32_t ) ulAddress ) >> 16U );
ucRegValCheck = FCCOB0LO;
if ( ( uint8_t ) ( ( ( uint32_t ) ulAddress ) >> 16U ) != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
/* Low address word */
FCCOB1 = ( uint16_t ) ( ( uint32_t ) ulAddress );
ucRegValCheck = FCCOB1;
if ( ( uint16_t ) ( ( uint32_t ) ulAddress ) != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
/* Load new data */
FCCOB2 = usData;
ucRegValCheck = FCCOB2;
if ( usData != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
/* Clear flag command complete */
/* FSTAT: CCIF=1 */
FSTAT = 0x80U;
/* Enable interrupt */
FCNFG_CCIE = 1U;
ucRegValCheck = FCNFG_CCIE;
if ( 1U != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
if ( ( FSTAT & 0x30U ) != 0U ) /* Is protection violation or acces error detected ? */
{
/* Disable interrupt */
FCNFG_CCIE = 0U;
ucRegValCheck = FCNFG_CCIE;
if(0U != ucRegValCheck)
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
return EEPROMDrv_ERR_NOTAVAIL; /* If yes then error */
}
ucRegValCheck = FSTAT_CCIF;
while ( 0U == ucRegValCheck )
{ /* Wait to command complete */
ucRegValCheck = FSTAT_CCIF;
}
ucRegValCheck = FSTAT_MGSTAT;
/* Is an error detected ? */ /* Was attempt to write data to the given address errorneous? */
if ( 1U == ucRegValCheck )
{
/* Disable interrupt */
FCNFG_CCIE = 0U;
return EEPROMDrv_ERR_VALUE; /* If yes then error */
}
return ( etErrorStatus );
}
Write Function:
EEPROMDR_etErrorStatus_t EEPROM_WriteWord ( uint32_t ulAddress,uint16_t usData )
{
uint16_t ucRegValCheck = 0x00;
EEPROMDR_etErrorStatus_t etErrorStatus = EEPROMDrv_ERR_OK;
if ( 0U == FSTAT_CCIF )
{ /* Is reading from EEPROM possible? */
return EEPROMDrv_ERR_BUSY; /* If no then error */
}
/* Clear error flags */
/* FSTAT: ACCERR=1,FPVIOL=1 */
FSTAT = 0x30U;
/* Three FCCOBn registers will be loaded */
FCCOBIX = 2U;
ucRegValCheck = FCCOBIX;
if ( 2U != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
/* Program D-Flash command */
FCCOB0HI = 0x11U;
ucRegValCheck = FCCOB0HI;
if ( 0x11U != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
/* High address word */
FCCOB0LO = ( uint8_t ) ( ( ( uint32_t ) ulAddress ) >> 16U );
ucRegValCheck = FCCOB0LO;
if ( ( uint8_t ) ( ( ( uint32_t ) ulAddress ) >> 16U ) != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
/* Low address word */
FCCOB1 = ( uint16_t ) ( ( uint32_t ) ulAddress );
ucRegValCheck = FCCOB1;
if ( ( uint16_t ) ( ( uint32_t ) ulAddress ) != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
/* Load new data */
FCCOB2 = usData;
ucRegValCheck = FCCOB2;
if ( usData != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
/* violates ref mc9s12z_eeprom_c_REF_3 MISRA rule 1.2 */
EnterCritical();
/* Clear flag command complete */
/* FSTAT: CCIF=1 */
FSTAT = 0x80U;
/* Enable interrupt */
FCNFG_CCIE = 1U;
ucRegValCheck = FCNFG_CCIE;
if ( 1U != ucRegValCheck )
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
/* violates ref mc9s12z_eeprom_c_REF_3 MISRA rule 1.2 */
ExitCritical();
if ( ( FSTAT & 0x30U ) != 0U ) /* Is protection violation or acces
error detected ? */
{
/* Disable interrupt */
FCNFG_CCIE = 0U;
ucRegValCheck = FCNFG_CCIE;
if(0U != ucRegValCheck)
{
etErrorStatus = EEPROMDrv_ERR_RegisterNotSet;
}
return EEPROMDrv_ERR_NOTAVAIL; /* If yes then error */
}
Read Function:
byte EEPROM_Read_byte(uint32_t ulAddress )
{
byte data;
data = *(byte *)ulAddress ;
return data;
}
