osd-contiki/cpu/avr/dev/usb/storage/avr_flash.h

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2008-10-14 22:16:36 +02:00
/* This file has been prepared for Doxygen automatic documentation generation.*/
/*! \file avr_flash.h *********************************************************
*
* \brief
* This file writes/reads to/from flash memory internal to the AVR.
*
* \addtogroup usbstick
*
* \author
* Colin O'Flynn <coflynn@newae.com>
******************************************************************************/
/*
Copyright (c) 2008 Colin O'Flynn
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of the copyright holders nor the names of
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
/**
\addtogroup usbstorage
@{
*/
#ifndef _DFMEM_H_
#define _DFMEM_H_
#include "conf_access.h"
#include "ctrl_status.h"
//_____ D E F I N I T I O N S ______________________________________________
//! FAT specification
#define ENTRY_SIZE 32 // size of entrie in byte
// First sector of the disk virtual (this disk isn't partitioned, only one partion)
#define PBR_SECTOR (0)
#define FAT_SECTOR (PBR_SECTOR + VMEM_RESERVED_SIZE)
#define ROOT_SECTOR (FAT_SECTOR + (VMEM_SIZE_FAT*VMEM_NB_FATS))
#define FILE_SECTOR (ROOT_SECTOR + ((ENTRY_SIZE*VMEM_NB_ROOT_ENTRY) / VMEM_SECTOR_SIZE)) // 1(sector) = size root dir
/* FAT Format Structure */
typedef struct
{
Uint16 nb_cylinder;
Byte nb_head;
Byte nb_sector;
Byte nb_hidden_sector;
Byte nb_sector_per_cluster;
} s_format;
#define MEM_BSY 0
#define MEM_OK 1
#define MEM_KO 2
//---- CONTROL FONCTIONS ----
// those fonctions are declared in df_mem.h
void avrf_mem_init(void);
Ctrl_status avrf_test_unit_ready(void);
Ctrl_status avrf_read_capacity( U32 _MEM_TYPE_SLOW_ *u32_nb_sector );
Bool avrf_wr_protect(void);
Bool avrf_removal(void);
//---- AVR FLASH LOW-LEVEL----
bit avrf_init (void);
bit avrf_mem_check(void);
bit avrf_read_open (Uint32);
void avrf_read_close (void);
bit avrf_write_open (Uint32);
void avrf_write_close (void);
//! Funtions to link USB DEVICE flow with data flash
bit avrf_write_sector (Uint16);
bit avrf_read_sector (Uint16);
s_format * avrf_format (void);
//---- ACCESS DATA FONCTIONS ----
// Standard functions for open in read/write mode the device
Ctrl_status avrf_read_10( U32 addr , U16 nb_sector );
Ctrl_status avrf_write_10( U32 addr , U16 nb_sector );
//** If your device transfer have a specific transfer for USB (Particularity of Chejudo product, or bootloader)
#ifdef DF_VALIDATION
#include "virtual_usb.h"
#else
#include "usb_drv.h" // In this case the driver must be known for the USB access
#endif
Ctrl_status avr_usb_read( void );
Ctrl_status avr_usb_write( void );
#endif // _DFMEM_H_
/** @} */