# CARD_WriteEeprom

## C Specification

  `#include <nitro/card.h>`
  `BOOL CARD_WriteEeprom(u32 dst, const void *src, u32 len);`

## Arguments

dst | Transfer destination EEPROM address.
src | Transfer source memory address.
len | Byte length of data to be written.

## Return Values

TRUE if the process succeeds. FALSE otherwise.

## Description

This function writes data to an EEPROM device. The function does not return control until it has finished processing. It returns TRUE if the process was successful or FALSE if it failed. To get the detailed result value when the process fails, call the `CARD_GetResultCode` function. In order to use this function, you must first lock the access bus with the `CARD_LockBackup` function.
Note that this function internally communicates with the ARM7 via PXI.
The process will not end if PXI interrupts are not enabled.

## See Also

`CARD_GetResultCode, CARD_IsBackupEeprom, CARD_WriteEepromAsync, CARD_ReadEeprom, CARD_VerifyEeprom, CARD_WriteAndVerifyEeprom`

## Revision History

12/09/2004 Changed "IO processor" to "ARM7 processor".
11/02/2004 Corrected a link.
08/31/2004 Added description for the `CARD_GetResultCode` function.
08/18/2004 Added description for the PXI interrupt
07/28/2004 Added links.
07/10/2004 Removed description related to busy loop.
07/05/2004 Initial version