--- /dev/null
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction. Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License. This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2009 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief FatFS: kfile interface for FatFS module by ChaN.
+ *
+ * \version $Id$
+ *
+ * \author Luca Ottaviano <lottaviano@develer.com>
+ *
+ */
+
+#include "fat.h"
+
+static size_t fatfile_read(struct KFile *_fd, void *buf, size_t size)
+{
+ FatFile *fd = FATFILE_CAST(_fd);
+ UINT count;
+ fd->error_code = f_read(&fd->fat_file, buf, size, &count);
+ return count;
+}
+
+static size_t fatfile_write(struct KFile *_fd, const void *buf, size_t size)
+{
+ FatFile *fd = FATFILE_CAST(_fd);
+ UINT count;
+ fd->error_code = f_write(&fd->fat_file, buf, size, &count);
+ return count;
+}
+
+static int fatfile_close(struct KFile *_fd)
+{
+ FatFile *fd = FATFILE_CAST(_fd);
+ fd->error_code = f_close(&fd->fat_file);
+ if (fd->error_code)
+ return EOF;
+ else
+ return 0;
+}
+
+static kfile_off_t fatfile_seek(struct KFile *_fd, kfile_off_t offset, KSeekMode whence)
+{
+ /* clip at start-of-file
+ * don't clip at end-of-file when in write mode
+ */
+ FatFile *fd = FATFILE_CAST(_fd);
+ DWORD lseek_offset;
+ switch (whence)
+ {
+ case KSM_SEEK_SET:
+ if (offset > 0)
+ lseek_offset = (DWORD) offset;
+ else
+ lseek_offset = 0;
+ break;
+ case KSM_SEEK_CUR:
+ if (offset > 0)
+ lseek_offset = fd->fat_file.fptr + (DWORD) offset;
+ else
+ {
+ if (fd->fat_file.fptr > (DWORD) (-offset))
+ lseek_offset = fd->fat_file.fptr - (DWORD)(-offset);
+ else
+ lseek_offset = 0;
+ }
+ break;
+ case KSM_SEEK_END:
+ if (offset > 0)
+ lseek_offset = fd->fat_file.fsize + (DWORD) offset;
+ else
+ {
+ if (fd->fat_file.fsize > (DWORD) (-offset))
+ lseek_offset = fd->fat_file.fsize + (DWORD) offset;
+ else
+ lseek_offset = 0;
+ }
+ break;
+ }
+ fd->error_code = f_lseek(&fd->fat_file, lseek_offset);
+ if ((fd->error_code) || (fd->fat_file.fptr != lseek_offset))
+ return EOF;
+ else
+ /* TODO: this conversion may overflow */
+ return (kfile_off_t)fd->fat_file.fptr;
+}
+
+static int fatfile_flush(struct KFile *_fd)
+{
+ FatFile *fd = FATFILE_CAST(_fd);
+ fd->error_code = f_sync(&fd->fat_file);
+ if (fd->error_code)
+ return EOF;
+ else
+ return 0;
+}
+
+static int fatfile_error(struct KFile *_fd)
+{
+ FatFile *fd = FATFILE_CAST(_fd);
+ return (int)fd->error_code;
+}
+
+static void fatfile_clearerr(struct KFile *_fd)
+{
+ FatFile *fd = FATFILE_CAST(_fd);
+ fd->error_code = FR_OK;
+}
+
+FRESULT fatfile_open(FatFile *file, const char *file_path, BYTE mode)
+{
+ file->fd._type = KFT_FATFILE;
+ file->fd.read = fatfile_read;
+ file->fd.write = fatfile_write;
+ file->fd.reopen = 0;
+ file->fd.close = fatfile_close;
+ file->fd.seek = fatfile_seek;
+ file->fd.flush = fatfile_flush;
+ file->fd.error = fatfile_error;
+ file->fd.clearerr = fatfile_clearerr;
+ return f_open(&file->fat_file, file_path, mode);
+}
+
--- /dev/null
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction. Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License. This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2009 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief FatFS: kfile interface for FatFS module by ChaN.
+ *
+ * \version $Id$
+ *
+ * \author Luca Ottaviano <lottaviano@develer.com>
+ *
+ */
+#ifndef FS_FAT_H
+#define FS_FAT_H
+
+#include <kern/kfile.h>
+#include "fatfs/src/ff.h"
+
+typedef struct FatFile
+{
+ KFile fd;
+ FIL fat_file;
+ FRESULT error_code; ///< error code for calls like kfile_read
+} FatFile;
+
+#define KFT_FATFILE MAKE_ID('F', 'A', 'T', 'F')
+
+INLINE FatFile * FATFILE_CAST(KFile *fd)
+{
+ ASSERT(fd->_type == KFT_FATFILE);
+ return (FatFile *)fd;
+}
+
+/**
+ * Initialize \a file and open \a file_path for reading.
+ */
+FRESULT fatfile_open(FatFile *file, const char *file_path, BYTE mode);
+
+#endif /* FS_FAT_H */
+