#include <nitro/fs.h>s32 FS_WriteFileAsync(FSFile* p_file, const void *src, s32 len);| p_file | Address of the FSFile structure. |
| src | Address of the buffer that stores the write data. |
| len | Byte length of data to be written. |
Returns the number of bytes if the data can be written properly. If not, returns -1.
This function asynchronously writes data of the specified size beginning at the current location of the file pointer. When the specified size is greater than the available memory, data is written until the available memory is used up. The size of the written data is returned. Unlike the FS_WriteFile function, it returns the control immediately and starts the asynchronous execution. Use the FS_IsBusy function to confirm the completion of the process. Alternatively, use the FS_WaitAsync function to wait for the completion.
If the archive cannot run the process asynchronously, this function becomes a synchronous process, just like FS_ReadFile. For such archives, this function cannot be called from the interrupt handler (IRQ mode). The process may not be completed if interrupts are prohibited.
FSFile
FS_WriteFile
FS_IsBusy
FS_WaitAsync
FS_GetFileLength
FS_GetFilePosition
FS_SeekFile
FS_SeekFileToBegin
FS_SeekFileToEnd
2008/10/02 Updated the See Also list.
2004/11/02 Corrected argument description.
2004/09/24 Added text under Note regarding the conditions for calling this function.
2004/07/13 Initial version.
CONFIDENTIAL