EEPROM EMULATOR on STR71x family CPU

[jsayavong]

Posted on June 12, 2006 at 18:08

EEPROM EMULATOR on STR71x family CPU

[jsayavong]

Posted on June 10, 2006 at 12:46

I am having a problem trying to use internal flash (bank1)as EEPROM of STR71x family microprocessor. Using a HITEX eval board (purchased from Keil) and I copied code which I downloaded directly from ST website --- the result was, system hung immediately when I ran it. Could some STR71 expert(s) in this forum kindly take a look at the code below and then please tell me what I did wrong here?

volatile unsigned long Data_Read;

volatile unsigned long Write_Status;

volatile unsigned long Read_Status;

int main (void)

{

EEPROM_Init(); //initialize EEPROM

// ------------ dataset#1 ------------

Write_Status = EEPROM_DataWrite(0x11111111); ///<< system hung begins

if (Write_Status == EEPROM_SUCCESSFUL_DATA_WRITE)

{

Read_Status = EEPROM_DataRead(&Data_Read);

if (Read_Status == EEPROM_SUCCESSFUL_DATA_READ)

printf(''The Valid Data-set is %x\n'',Data_Read);

}

// ------------dataset#2 ------------

Write_Status = EEPROM_DataWrite(0x22222222);

if (Write_Status == EEPROM_SUCCESSFUL_DATA_WRITE)

{

Read_Status = EEPROM_DataRead(&Data_Read);

if (Read_Status == EEPROM_SUCCESSFUL_DATA_READ)

printf(''The Valid Data-set is %x\n'',Data_Read);

}

// ------------ dataset#3 ------------

Write_Status = EEPROM_DataWrite(0x33333333);

if (Write_Status == EEPROM_SUCCESSFUL_DATA_WRITE)

{

Read_Status = EEPROM_DataRead(&Data_Read);

if (Read_Status == EEPROM_SUCCESSFUL_DATA_READ)

printf(''The Valid Data-set is %x\n'',Data_Read);

}

} //end main()

[jsayavong]

Posted on June 12, 2006 at 14:10

Thanks for the reply. I am very new to the ARM

enviroment. Looking into the reference manual you

suggested, I still can figure out exactly where

should the code be modified to execute from RAM.

Could you please kindly modify my quote per

your suggestion?

Thanks for your help in advance,

Regards,

JIMMY

[jsayavong]

Posted on June 12, 2006 at 18:08

Hi Sir,

I read the Note on section 2.3 but I am still not

be able to implement into my code above.

Do you have a ''known'' working code so that I can

try out on my eval board? to see if your theory is really

work? I am using KEIL UV3 compiler (REALVIEW).

My e-mail is:

mailto:[e-mail]

if you

don't mind sharing your code.

Regards,

JIMMY