1.2.7.4.19 SYS_FS_FileWrite Function

size_t SYS_FS_FileWrite
(
    SYS_FS_HANDLE handle,
    const void *buf,
    size_t nbyte
);

Writes data to the file.

This function attempts to write nbyte bytes from the buffer pointed to by buf to the file associated with the file handle.

A valid file handle must be obtained before writing a file.

On success - Returns the number of bytes written successfully (0 or positive number).

On failure - Returns -1. The reason for the failure can be retrieved with SYS_FS_Error or SYS_FS_FileError.

SYS_FS_HANDLE fileHandle;
const char *buf = "Hello World";
size_t nbytes;
size_t bytes_written;

fileHandle = SYS_FS_FileOpen("/mnt/myDrive/FILE.txt", (SYS_FS_FILE_OPEN_WRITE));

if(fileHandle != SYS_FS_HANDLE_INVALID)
{
    // File open is successful
}

// Write data to the file
bytes_written = SYS_FS_FileWrite(fileHandle, (const void *)buf, nbytes);

None.