You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
211 lines
7.5 KiB
211 lines
7.5 KiB
/*
|
|
LUFA Library
|
|
Copyright (C) Dean Camera, 2009.
|
|
|
|
dean [at] fourwalledcubicle [dot] com
|
|
www.fourwalledcubicle.com
|
|
*/
|
|
|
|
/*
|
|
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
|
|
|
|
Permission to use, copy, modify, and distribute this software
|
|
and its documentation for any purpose and without fee is hereby
|
|
granted, provided that the above copyright notice appear in all
|
|
copies and that both that the copyright notice and this
|
|
permission notice and warranty disclaimer appear in supporting
|
|
documentation, and that the name of the author not be used in
|
|
advertising or publicity pertaining to distribution of the
|
|
software without specific, written prior permission.
|
|
|
|
The author disclaim all warranties with regard to this
|
|
software, including all implied warranties of merchantability
|
|
and fitness. In no event shall the author be liable for any
|
|
special, indirect or consequential damages or any damages
|
|
whatsoever resulting from loss of use, data or profits, whether
|
|
in an action of contract, negligence or other tortious action,
|
|
arising out of or in connection with the use or performance of
|
|
this software.
|
|
*/
|
|
|
|
/** \file
|
|
*
|
|
* This file is the master dispatch header file for the board-specific dataflash driver, for boards containing
|
|
* dataflash ICs for external non-volatile storage.
|
|
*
|
|
* User code should include this file, which will in turn include the correct dataflash driver header file for
|
|
* the currently selected board.
|
|
*
|
|
* If the BOARD value is set to BOARD_USER, this will include the /Board/Dataflash.h file in the user project
|
|
* directory.
|
|
*/
|
|
|
|
#ifndef __DATAFLASH_H__
|
|
#define __DATAFLASH_H__
|
|
|
|
/* Macros: */
|
|
#if !defined(__DOXYGEN__)
|
|
#define INCLUDE_FROM_DATAFLASH_H
|
|
#define INCLUDE_FROM_BOARD_DRIVER
|
|
#endif
|
|
|
|
/* Includes: */
|
|
#include "../AT90USBXXX/SPI.h"
|
|
#include "../../Common/Common.h"
|
|
|
|
#if !defined(BOARD)
|
|
#error BOARD must be set in makefile to a value specified in BoardTypes.h.
|
|
#elif (BOARD == BOARD_USBKEY)
|
|
#include "USBKEY/Dataflash.h"
|
|
#elif (BOARD == BOARD_STK525)
|
|
#include "STK525/Dataflash.h"
|
|
#elif (BOARD == BOARD_STK526)
|
|
#include "STK526/Dataflash.h"
|
|
#elif (BOARD == BOARD_USER)
|
|
#include "Board/Dataflash.h"
|
|
#else
|
|
#error The selected board does not contain a dataflash IC.
|
|
#endif
|
|
|
|
/* Enable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Public Interface - May be used in end-application: */
|
|
/* Macros: */
|
|
/** Returns the mask of the currently selected Dataflash chip, either DATAFLASH_NO_CHIP or a
|
|
* DATAFLASH_CHIPn mask (where n is the chip number).
|
|
*/
|
|
#define Dataflash_GetSelectedChip() (DATAFLASH_CHIPCS_PORT & DATAFLASH_CHIPCS_MASK)
|
|
|
|
/** Selects the dataflash chip given as a chip mask, in the form of DATAFLASH_CHIPn (where n
|
|
* is the chip number).
|
|
*/
|
|
#define Dataflash_SelectChip(mask) MACROS{ DATAFLASH_CHIPCS_PORT = ((DATAFLASH_CHIPCS_PORT \
|
|
& ~DATAFLASH_CHIPCS_MASK) | mask); }MACROE
|
|
|
|
/** Deselects the current dataflash chip, so that no dataflash is selected. */
|
|
#define Dataflash_DeselectChip() Dataflash_SelectChip(DATAFLASH_NO_CHIP)
|
|
|
|
/* Inline Functions: */
|
|
/** Initializes the dataflash driver (including the SPI driver) so that commands and data may be
|
|
* sent to an attached dataflash IC.
|
|
*
|
|
* \param PrescalerMask SPI prescaler mask, see SPI.h documentation
|
|
*/
|
|
static inline void Dataflash_Init(const uint8_t PrescalerMask)
|
|
{
|
|
DATAFLASH_CHIPCS_DDR |= DATAFLASH_CHIPCS_MASK;
|
|
DATAFLASH_CHIPCS_PORT |= DATAFLASH_CHIPCS_MASK;
|
|
|
|
SPI_Init(PrescalerMask, true);
|
|
}
|
|
|
|
/** Sends a byte to the currently selected dataflash IC, and returns a byte from the dataflash.
|
|
*
|
|
* \param Byte of data to send to the dataflash
|
|
*
|
|
* \return Last response byte from the dataflash
|
|
*/
|
|
static inline uint8_t Dataflash_TransferByte(const uint8_t Byte) ATTR_ALWAYSINLINE;
|
|
static inline uint8_t Dataflash_TransferByte(const uint8_t Byte)
|
|
{
|
|
return SPI_TransferByte(Byte);
|
|
}
|
|
|
|
/** Sends a byte to the currently selected dataflash IC, and ignores the next byte from the dataflash.
|
|
*
|
|
* \param Byte of data to send to the dataflash
|
|
*/
|
|
static inline void Dataflash_SendByte(const uint8_t Byte) ATTR_ALWAYSINLINE;
|
|
static inline void Dataflash_SendByte(const uint8_t Byte)
|
|
{
|
|
SPI_SendByte(Byte);
|
|
}
|
|
|
|
/** Sends a dummy byte to the currently selected dataflash IC, and returns the next byte from the dataflash.
|
|
*
|
|
* \return Last response byte from the dataflash
|
|
*/
|
|
static inline uint8_t Dataflash_ReceiveByte(void) ATTR_ALWAYSINLINE ATTR_WARN_UNUSED_RESULT;
|
|
static inline uint8_t Dataflash_ReceiveByte(void)
|
|
{
|
|
return SPI_ReceiveByte();
|
|
}
|
|
|
|
/** Toggles the select line of the currently selected dataflash IC, so that it is ready to receive
|
|
* a new command.
|
|
*/
|
|
static inline void Dataflash_ToggleSelectedChipCS(void)
|
|
{
|
|
#if (DATAFLASH_TOTALCHIPS == 2)
|
|
uint8_t SelectedChipMask = Dataflash_GetSelectedChip();
|
|
|
|
Dataflash_DeselectChip();
|
|
Dataflash_SelectChip(SelectedChipMask);
|
|
#else
|
|
Dataflash_DeselectChip();
|
|
Dataflash_SelectChip(DATAFLASH_CHIP1);
|
|
#endif
|
|
}
|
|
|
|
/** Spinloops while the currently selected dataflash is busy executing a command, such as a main
|
|
* memory page program or main memory to buffer transfer.
|
|
*/
|
|
static inline void Dataflash_WaitWhileBusy(void)
|
|
{
|
|
Dataflash_ToggleSelectedChipCS();
|
|
Dataflash_SendByte(DF_CMD_GETSTATUS);
|
|
while (!(Dataflash_ReceiveByte() & DF_STATUS_READY));
|
|
}
|
|
|
|
/** Selects a dataflash IC from the given page number, which should range from 0 to
|
|
* ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1). For boards containing only one
|
|
* dataflash IC, this will select DATAFLASH_CHIP1. If the given page number is outside the total number
|
|
* of pages contained in the boards dataflash ICs, all dataflash ICs are deselected.
|
|
*
|
|
* \param PageAddress Address of the page to manipulate, ranging from
|
|
* ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1).
|
|
*/
|
|
static inline void Dataflash_SelectChipFromPage(const uint16_t PageAddress)
|
|
{
|
|
Dataflash_DeselectChip();
|
|
|
|
if (PageAddress >= (DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS))
|
|
return;
|
|
|
|
#if (DATAFLASH_TOTALCHIPS == 2)
|
|
if (PageAddress & 0x01)
|
|
Dataflash_SelectChip(DATAFLASH_CHIP2);
|
|
else
|
|
Dataflash_SelectChip(DATAFLASH_CHIP1);
|
|
#else
|
|
Dataflash_SelectChip(DATAFLASH_CHIP1);
|
|
#endif
|
|
}
|
|
|
|
/** Sends a set of page and buffer address bytes to the currently selected dataflash IC, for use with
|
|
* dataflash commands which require a complete 24-byte address.
|
|
*
|
|
* \param PageAddress Page address within the selected dataflash IC
|
|
* \param BufferByte Address within the dataflash's buffer
|
|
*/
|
|
static inline void Dataflash_SendAddressBytes(uint16_t PageAddress, const uint16_t BufferByte)
|
|
{
|
|
#if (DATAFLASH_TOTALCHIPS == 2)
|
|
PageAddress >>= 1;
|
|
#endif
|
|
|
|
Dataflash_SendByte(PageAddress >> 5);
|
|
Dataflash_SendByte((PageAddress << 3) | (BufferByte >> 8));
|
|
Dataflash_SendByte(BufferByte);
|
|
}
|
|
|
|
/* Disable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|