# CARD_WriteEeprom

## Syntax

  `#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 value when processing fails, call the `CARD_GetResultCode` function. To use this function, you must first lock the access bus with the `CARD_LockBackup` function.
This function communicates with the ARM7 processor internally via PXI.
The process will not end if PXI interrupts are not enabled.

## See Also

`CARD_GetResultCode
CARD_IsBackupEeprom
CARD_ReadEeprom
CARD_VerifyEeprom
CARD_WriteAndVerifyEeprom
CARD_WriteEepromAsync`

## Revision History

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

CONFIDENTIAL