# CARD_WriteFlash

## C Specification

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

## Arguments

dst | The FLASH address of the transfer destination
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 the FLASH 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_IsBackupFlash`, `CARD_WriteFlashAsync`, `CARD_ReadFlash`, `CARD_VerifyFlash`, `CARD_WriteAndVerifyFlash`

## Revision History

12/09/2004 Changed "IO processor" to "ARM7 processor".
08/31/2004 Added description for the `CARD_GetResultCode` function.
08/23/2004 Initial version.