altos: Add SDCARD and FAT16 filesystem support

[fw/altos] / src / drivers / ao_fat.h

diff --git a/src/drivers/ao_fat.h b/src/drivers/ao_fat.h
new file mode 100644 (file)
index 0000000..2bf6222
--- /dev/null
+++ b/src/drivers/ao_fat.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright © 2013 Keith Packard <keithp@keithp.com>
+ *
+ * This program 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; version 2 of the License.
+ *
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef _AO_FAT_H_
+#define _AO_FAT_H_
+
+void
+ao_fat_init(void);
+
+#define AO_FAT_FILE_READ_ONLY          0x01
+#define AO_FAT_FILE_HIDDEN             0x02
+#define AO_FAT_FILE_SYSTEM             0x04
+#define AO_FAT_FILE_VOLUME_LABEL       0x08
+#define AO_FAT_FILE_DIRECTORY          0x10
+#define AO_FAT_FILE_ARCHIVE            0x20
+
+#define AO_FAT_DENT_EMPTY              0xe5
+#define AO_FAT_DENT_END                        0x00
+
+uint8_t
+ao_fat_open(char name[11]);
+
+uint8_t
+ao_fat_creat(char name[11]);
+
+void
+ao_fat_close(void);
+
+int
+ao_fat_read(uint8_t *dest, int len);
+
+int
+ao_fat_write(uint8_t *buf, int len);
+
+#define AO_FAT_SEEK_SET        0
+#define AO_FAT_SEEK_CUR        1
+#define AO_FAT_SEEK_END        2
+
+uint32_t
+bao_fat_seek(int32_t pos, uint8_t whence);
+
+uint8_t
+ao_fat_unlink(char name[11]);
+
+uint8_t
+ao_fat_rename(char old[11], char new[11]);
+
+struct ao_fat_dirent {
+       char            name[11];
+       uint8_t         attr;
+       uint32_t        size;
+       uint16_t        cluster;
+       uint16_t        entry;
+};
+
+uint8_t
+ao_fat_readdir(uint16_t *entry, struct ao_fat_dirent *dirent);
+
+#endif /* _AO_FAT_H_ */