/*
LUFA Library
- Copyright (C) Dean Camera, 2010.
-
+ Copyright (C) Dean Camera, 2012.
+
dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
+ www.lufa-lib.org
*/
/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
- Permission to use, copy, modify, distribute, and sell this
+ 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
+ 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
+ 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
/** \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 dataflash driver, for boards containing
- * dataflash ICs for external non-volatile storage.
+ * 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 BOARD value is set to BOARD_USER, this will include the /Board/Dataflash.h file in the user project
+ * 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
+ * \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 Module Description
+ * \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 BOARD value is set to BOARD_USER, this will include the /Board/Dataflash.h file in the user project
+ * 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: */
- #if !defined(__DOXYGEN__)
#define __INCLUDE_FROM_DATAFLASH_H
- #define INCLUDE_FROM_DATAFLASH_H
- #endif
/* Includes: */
- #include "../Peripheral/SPI.h"
- #include "../../Common/Common.h"
-
+ #include "../../Common/Common.h"
+
/* Enable C linkage for C++ Compilers: */
#if defined(__cplusplus)
extern "C" {
#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)
-
- /* Pseudo-Function Macros: */
- #if defined(__DOXYGEN__)
- /** 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 DATAFLASH_CHIPn mask (where n is the chip number).
- */
- static inline uint8_t Dataflash_GetSelectedChip(void);
-
- /** Selects the given dataflash chip.
- *
- * \param[in] ChipMask Mask of the Dataflash IC to select, in the form of DATAFLASH_CHIPn mask (where n is
- * the chip number).
- */
- static inline void Dataflash_SelectChip(uint8_t ChipMask);
-
- /** Deselects the current dataflash chip, so that no dataflash is selected. */
- static inline void Dataflash_DeselectChip(void);
- #else
- #define Dataflash_GetSelectedChip() (DATAFLASH_CHIPCS_PORT & DATAFLASH_CHIPCS_MASK)
- #define Dataflash_SelectChip(mask) MACROS{ DATAFLASH_CHIPCS_PORT = ((DATAFLASH_CHIPCS_PORT \
- & ~DATAFLASH_CHIPCS_MASK) | (mask)); }MACROE
-
- #define Dataflash_DeselectChip() Dataflash_SelectChip(DATAFLASH_NO_CHIP)
- #endif
-
/* 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 of data to send to 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;
- 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[in] Byte of data to send to 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;
- 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_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
- static inline uint8_t Dataflash_ReceiveByte(void)
- {
- return SPI_ReceiveByte();
- }
/* Includes: */
#if (BOARD == BOARD_NONE)
- #error The Board Buttons driver cannot be used if the makefile BOARD option is not set.
+ #error The Board Dataflash driver cannot be used if the makefile BOARD option is not set.
#elif (BOARD == BOARD_USBKEY)
- #include "USBKEY/Dataflash.h"
+ #include "AVR8/USBKEY/Dataflash.h"
#elif (BOARD == BOARD_STK525)
- #include "STK525/Dataflash.h"
+ #include "AVR8/STK525/Dataflash.h"
#elif (BOARD == BOARD_STK526)
- #include "STK526/Dataflash.h"
- #elif (BOARD == BOARD_XPLAIN)
- #include "XPLAIN/Dataflash.h"
- #elif (BOARD == BOARD_XPLAIN_REV1)
- #include "XPLAIN/Dataflash.h"
+ #include "AVR8/STK526/Dataflash.h"
+ #elif ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
+ #include "AVR8/XPLAIN/Dataflash.h"
#elif (BOARD == BOARD_EVK527)
- #include "EVK527/Dataflash.h"
- #elif (BOARD == BOARD_USER)
- #include "Board/Dataflash.h"
+ #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
- #error The selected board does not contain a dataflash IC.
+ #include "Board/Dataflash.h"
#endif
-
- /* Inline Functions: */
- /** Initializes the dataflash driver so that commands and data may be sent to an attached dataflash IC.
- * The AVR's SPI driver MUST be initialized before any of the dataflash commands are used.
- */
- static inline void Dataflash_Init(void)
- {
- DATAFLASH_CHIPCS_DDR |= DATAFLASH_CHIPCS_MASK;
- DATAFLASH_CHIPCS_PORT |= DATAFLASH_CHIPCS_MASK;
- }
-
- /** 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)
- {
- uint8_t SelectedChipMask = Dataflash_GetSelectedChip();
-
- Dataflash_DeselectChip();
- Dataflash_SelectChip(SelectedChipMask);
- }
-
- /** 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)
- {
- Dataflash_ToggleSelectedChipCS();
- Dataflash_SendByte(DF_CMD_GETSTATUS);
- while (!(Dataflash_ReceiveByte() & DF_STATUS_READY));
- Dataflash_ToggleSelectedChipCS();
- }
-
- /** 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[in] PageAddress Address of the page to manipulate, ranging from
- * ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1).
- */
- static inline void Dataflash_SelectChipFromPage(const uint16_t PageAddress);
-
- /** 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[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);
/* Disable C linkage for C++ Compilers: */
#if defined(__cplusplus)
}
#endif
-
+
#endif
/** @} */
+
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