[参考译文] CC3235SF：关于 CC3235SF 文件写入操作的查询

/** 
 * \return         File handle on success. Negative error code on failure
 * 
 * \sa             sl_FsRead, sl_FsWrite, sl_FsClose
 * \note           Belongs to \ref basic_api
 * \warning        None
 * 
 * \par Example
 * 
 * - Creating a file and writing data to it
 */
char*           DeviceFileName = "MyFile.txt";
unsigned long   MaxSize = 63 * 1024; // 62.5KB is the max file size
long            DeviceFileHandle = -1;
_i32            RetVal;        // Negative return value indicates error
unsigned long   Offset = 0;
unsigned char   InputBuffer[100];
_u32            MasterToken = 0;

// Create a secure file if it doesn't exist and open it for writing
DeviceFileHandle = sl_FsOpen((unsigned char *)DeviceFileName,
                             SL_FS_CREATE | SL_FS_OVERWRITE | SL_FS_CREATE_SECURE | SL_FS_CREATE_NOSIGNATURE | SL_FS_CREATE_MAX_SIZE(MaxSize),
                             &MasterToken);

Offset = 0;
// It is preferred that the Offset and length be aligned to 16 bytes in secure files
RetVal = sl_FsWrite(DeviceFileHandle, Offset, (unsigned char *)"HelloWorld", strlen("HelloWorld"));

RetVal = sl_FsClose(DeviceFileHandle, NULL, NULL , 0);

// Open the same file for reading, using the Token obtained during creation
DeviceFileHandle = sl_FsOpen((unsigned char *)DeviceFileName, SL_FS_READ, &MasterToken);

Offset = 0;
RetVal = sl_FsRead(DeviceFileHandle, Offset, (unsigned char *)InputBuffer, strlen("HelloWorld"));

RetVal = sl_FsClose(DeviceFileHandle, NULL, NULL , 0);