CARD_ReadFlashAsync

Syntax

#include <nitro/card.h>

static inline void	CARD_ReadFlashAsync(
	u32 src, void *dst, u32 len, MIDmaCallback callback, void *arg);

Arguments

src	The FLASH address of the transfer source
dst	Transfer destination memory address.
len	Length of data being read, in bytes.
callback	Completion callback function. Specify `NULL` if this is unnecessary. This callback is called from within the interrupt handler.
arg	Arguments to pass to the completion callback function. This is simply ignored if `NULL` was specified for `callback`.

Return Values

None.

Description

This function asynchronously loads data from the FLASH device. This function immediately returns control. To use this function, you must first lock the access bus with the CARD_LockBackup function. Use the CARD_WaitBackupAsync function to wait for processing to end. To determine the processing result, call the CARD_GetResultCode function after processing is complete.

This function communicates with the ARM7 processor internally via PXI.
The process will not end if PXI interrupts are not enabled.

Internal Operation

This function executes an asynchronous process using an internal thread. See the description of the CARD_GetThreadPriority function for more information on this thread.

Revision History

2005/06/01 Added a statement indicating that callback is called from interrupt handler.
2004/12/09 Changed "IO processor" to "ARM7 processor".
2004/11/02 Revised links.
2004/08/23 Revised links due to function changes.
2004/08/18 Initial version.

CONFIDENTIAL