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.
253 lines
10 KiB
253 lines
10 KiB
13 years ago
|
/*
|
||
|
|
LUFA Library
|
||
|
|
Copyright (C) Dean Camera, 2012.
|
||
|
|
|
||
|
|
dean [at] fourwalledcubicle [dot] com
|
||
|
|
www.lufa-lib.org
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
|
||
|
|
|
||
|
|
Permission to use, copy, modify, distribute, and sell this
|
||
|
|
software and its documentation for any purpose is hereby granted
|
||
|
|
without fee, 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
|
||
|
|
* \brief Master include file for the board dataflash IC driver.
|
||
|
|
* \brief Atmel Dataflash storage IC board hardware driver.
|
||
|
|
*
|
||
|
|
* This file is the master dispatch header file for the board-specific Atmel dataflash driver, for boards containing
|
||
|
|
* Atmel 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 \c BOARD value is set to \c BOARD_USER, this will include the \c /Board/Dataflash.h file in the user project
|
||
|
|
* directory.
|
||
|
|
*
|
||
|
|
* For possible \c BOARD makefile values, see \ref Group_BoardTypes.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** \ingroup Group_BoardDrivers
|
||
|
|
* \defgroup Group_Dataflash Dataflash Driver - LUFA/Drivers/Board/Dataflash.h
|
||
|
|
* \brief Atmel Dataflash storage IC board hardware driver.
|
||
|
|
*
|
||
|
|
* \section Sec_Dependencies Module Source Dependencies
|
||
|
|
* The following files must be built with any user project that uses this module:
|
||
|
|
* - None
|
||
|
|
*
|
||
|
|
* \section Sec_ModDescription Module Description
|
||
|
|
* Dataflash driver. This module provides an easy to use interface for the Dataflash ICs located on many boards,
|
||
|
|
* for the storage of large amounts of data into the Dataflash's non-volatile memory.
|
||
|
|
*
|
||
|
|
* If the \c BOARD value is set to \c BOARD_USER, this will include the \c /Board/Dataflash.h file in the user project
|
||
|
|
* directory. Otherwise, it will include the appropriate built in board driver header file.
|
||
|
|
*
|
||
|
|
* For possible \c BOARD makefile values, see \ref Group_BoardTypes.
|
||
|
|
*
|
||
|
|
* \section Sec_ExampleUsage Example Usage
|
||
|
|
* The following snippet is an example of how this module may be used within a typical
|
||
|
|
* application.
|
||
|
|
*
|
||
|
|
* \code
|
||
|
|
* // Initialize the SPI and board Dataflash drivers before first use
|
||
|
|
* SPI_Init(SPI_SPEED_FCPU_DIV_2 | SPI_ORDER_MSB_FIRST | SPI_SCK_LEAD_FALLING |
|
||
|
|
* SPI_SAMPLE_TRAILING | SPI_MODE_MASTER);
|
||
|
|
* Dataflash_Init();
|
||
|
|
*
|
||
|
|
* uint8_t WriteBuffer[DATAFLASH_PAGE_SIZE];
|
||
|
|
* uint8_t ReadBuffer[DATAFLASH_PAGE_SIZE];
|
||
|
|
*
|
||
|
|
* // Fill page write buffer with a repeating pattern
|
||
|
|
* for (uint16_t i = 0; i < DATAFLASH_PAGE_SIZE; i++)
|
||
|
|
* WriteBuffer[i] = (i & 0xFF);
|
||
|
|
*
|
||
|
|
* // Must select the chip of interest first before operating on it
|
||
|
|
* Dataflash_SelectChip(DATAFLASH_CHIP1);
|
||
|
|
*
|
||
|
|
* // Write to the Dataflash's first internal memory buffer
|
||
|
|
* printf("Writing data to first dataflash buffer:\r\n");
|
||
|
|
* Dataflash_SendByte(DF_CMD_BUFF1WRITE);
|
||
|
|
* Dataflash_SendAddressBytes(0, 0);
|
||
|
|
*
|
||
|
|
* for (uint16_t i = 0; i < DATAFLASH_PAGE_SIZE; i++)
|
||
|
|
* Dataflash_SendByte(WriteBuffer[i]);
|
||
|
|
*
|
||
|
|
* // Commit the Dataflash's first memory buffer to the non-volatile FLASH memory
|
||
|
|
* printf("Committing page to non-volatile memory page index 5:\r\n");
|
||
|
|
* Dataflash_SendByte(DF_CMD_BUFF1TOMAINMEMWITHERASE);
|
||
|
|
* Dataflash_SendAddressBytes(5, 0);
|
||
|
|
* Dataflash_WaitWhileBusy();
|
||
|
|
*
|
||
|
|
* // Read the page from non-volatile FLASH memory into the Dataflash's second memory buffer
|
||
|
|
* printf("Reading data into second dataflash buffer:\r\n");
|
||
|
|
* Dataflash_SendByte(DF_CMD_MAINMEMTOBUFF2);
|
||
|
|
* Dataflash_SendAddressBytes(5, 0);
|
||
|
|
* Dataflash_WaitWhileBusy();
|
||
|
|
*
|
||
|
|
* // Read the Dataflash's second internal memory buffer
|
||
|
|
* Dataflash_SendByte(DF_CMD_BUFF2READ);
|
||
|
|
* Dataflash_SendAddressBytes(0, 0);
|
||
|
|
*
|
||
|
|
* for (uint16_t i = 0; i < DATAFLASH_PAGE_SIZE; i++)
|
||
|
|
* ReadBuffer[i] = Dataflash_ReceiveByte();
|
||
|
|
*
|
||
|
|
* // Deselect the chip after use
|
||
|
|
* Dataflash_DeselectChip();
|
||
|
|
* \endcode
|
||
|
|
*
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __DATAFLASH_H__
|
||
|
|
#define __DATAFLASH_H__
|
||
|
|
|
||
|
|
/* Macros: */
|
||
|
|
#define __INCLUDE_FROM_DATAFLASH_H
|
||
|
|
|
||
|
|
/* Includes: */
|
||
|
|
#include "../../Common/Common.h"
|
||
|
|
|
||
|
|
/* Enable C linkage for C++ Compilers: */
|
||
|
|
#if defined(__cplusplus)
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Public Interface - May be used in end-application: */
|
||
|
|
/* Macros: */
|
||
|
|
#if !defined(__DOXYGEN__)
|
||
|
|
#define __GET_DATAFLASH_MASK2(x, y) x ## y
|
||
|
|
#define __GET_DATAFLASH_MASK(x) __GET_DATAFLASH_MASK2(DATAFLASH_CHIP,x)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/** Retrieves the Dataflash chip select mask for the given Dataflash chip index.
|
||
|
|
*
|
||
|
|
* \param[in] index Index of the dataflash chip mask to retrieve
|
||
|
|
*
|
||
|
|
* \return Mask for the given Dataflash chip's /CS pin
|
||
|
|
*/
|
||
|
|
#define DATAFLASH_CHIP_MASK(index) __GET_DATAFLASH_MASK(index)
|
||
|
|
|
||
|
|
/* Inline Functions: */
|
||
|
|
/** Initializes the dataflash driver so that commands and data may be sent to an attached dataflash IC.
|
||
|
|
*
|
||
|
|
* \note The microcontroller's physical interface driver connected to the Dataflash IC must be initialized before
|
||
|
|
* any of the dataflash commands are used. This is usually a SPI hardware port, but on some devices/boards may
|
||
|
|
* be a USART operating in SPI Master mode.
|
||
|
|
*/
|
||
|
|
static inline void Dataflash_Init(void);
|
||
|
|
|
||
|
|
/** Determines the currently selected dataflash chip.
|
||
|
|
*
|
||
|
|
* \return Mask of the currently selected Dataflash chip, either \ref DATAFLASH_NO_CHIP if no chip is selected
|
||
|
|
* or a \c DATAFLASH_CHIPn mask (where n is the chip number).
|
||
|
|
*/
|
||
|
|
static inline uint8_t Dataflash_GetSelectedChip(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
|
||
|
|
|
||
|
|
/** Selects the given dataflash chip.
|
||
|
|
*
|
||
|
|
* \param[in] ChipMask Mask of the Dataflash IC to select, in the form of \c DATAFLASH_CHIPn mask (where n is
|
||
|
|
* the chip number).
|
||
|
|
*/
|
||
|
|
static inline void Dataflash_SelectChip(const uint8_t ChipMask) ATTR_ALWAYS_INLINE;
|
||
|
|
|
||
|
|
/** Deselects the current dataflash chip, so that no dataflash is selected. */
|
||
|
|
static inline void Dataflash_DeselectChip(void) ATTR_ALWAYS_INLINE;
|
||
|
|
|
||
|
|
/** 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 \ref 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[in] PageAddress Address of the page to manipulate, ranging from
|
||
|
|
* 0 to ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1).
|
||
|
|
*/
|
||
|
|
static inline void Dataflash_SelectChipFromPage(const uint16_t PageAddress);
|
||
|
|
|
||
|
|
/** 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);
|
||
|
|
|
||
|
|
/** Spin-loops 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);
|
||
|
|
|
||
|
|
/** 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-bit address.
|
||
|
|
*
|
||
|
|
* \param[in] PageAddress Page address within the selected dataflash IC
|
||
|
|
* \param[in] BufferByte Address within the dataflash's buffer
|
||
|
|
*/
|
||
|
|
static inline void Dataflash_SendAddressBytes(uint16_t PageAddress,
|
||
|
|
const uint16_t BufferByte);
|
||
|
|
|
||
|
|
/** Sends a byte to the currently selected dataflash IC, and returns a byte from the dataflash.
|
||
|
|
*
|
||
|
|
* \param[in] Byte 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_ALWAYS_INLINE;
|
||
|
|
|
||
|
|
/** Sends a byte to the currently selected dataflash IC, and ignores the next byte from the dataflash.
|
||
|
|
*
|
||
|
|
* \param[in] Byte Byte of data to send to the dataflash
|
||
|
|
*/
|
||
|
|
static inline void Dataflash_SendByte(const uint8_t Byte) ATTR_ALWAYS_INLINE;
|
||
|
|
|
||
|
|
/** 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_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
|
||
|
|
|
||
|
|
/* Includes: */
|
||
|
|
#if (BOARD == BOARD_NONE)
|
||
|
|
#error The Board Dataflash driver cannot be used if the makefile BOARD option is not set.
|
||
|
|
#elif (BOARD == BOARD_USBKEY)
|
||
|
|
#include "AVR8/USBKEY/Dataflash.h"
|
||
|
|
#elif (BOARD == BOARD_STK525)
|
||
|
|
#include "AVR8/STK525/Dataflash.h"
|
||
|
|
#elif (BOARD == BOARD_STK526)
|
||
|
|
#include "AVR8/STK526/Dataflash.h"
|
||
|
|
#elif ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
|
||
|
|
#include "AVR8/XPLAIN/Dataflash.h"
|
||
|
|
#elif (BOARD == BOARD_EVK527)
|
||
|
|
#include "AVR8/EVK527/Dataflash.h"
|
||
|
|
#elif (BOARD == BOARD_A3BU_XPLAINED)
|
||
|
|
#include "XMEGA/A3BU_XPLAINED/Dataflash.h"
|
||
|
|
#elif (BOARD == BOARD_B1_XPLAINED)
|
||
|
|
#include "XMEGA/B1_XPLAINED/Dataflash.h"
|
||
|
|
#else
|
||
|
|
#include "Board/Dataflash.h"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Disable C linkage for C++ Compilers: */
|
||
|
|
#if defined(__cplusplus)
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/** @} */
|
||
|
|
|