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-/*
- 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
-
-/** @} */
-
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