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Diffstat (limited to 'lib/lufa/LUFA/Drivers/Board/Dataflash.h')
| -rw-r--r-- | lib/lufa/LUFA/Drivers/Board/Dataflash.h | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/lib/lufa/LUFA/Drivers/Board/Dataflash.h b/lib/lufa/LUFA/Drivers/Board/Dataflash.h new file mode 100644 index 0000000000..b634dccaa6 --- /dev/null +++ b/lib/lufa/LUFA/Drivers/Board/Dataflash.h @@ -0,0 +1,264 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 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 disclaims 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_Dataflash_Dependencies Module Source Dependencies + * The following files must be built with any user project that uses this module: + * - None + * + * \section Sec_Dataflash_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_Dataflash_ExampleUsage Example Usage + * The following snippet is an example of how this module may be used within a typical + * application. + * + * \code + * // Initialize the board Dataflash driver before first use + * 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: */ + /** Retrieves the Dataflash chip select mask for the given Dataflash chip index. + * + * \attention This macro will only work correctly on chip index numbers that are compile-time + * constants defined by the preprocessor. + * + * \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) CONCAT_EXPANDED(DATAFLASH_CHIP, 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 a \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) + #define DATAFLASH_TOTALCHIPS 0 + #define DATAFLASH_NO_CHIP 0 + #define DATAFLASH_CHIP1 0 + #define DATAFLASH_PAGE_SIZE 0 + #define DATAFLASH_PAGES 0 + static inline void Dataflash_Init(void) {}; + static inline uint8_t Dataflash_TransferByte(const uint8_t Byte) { return 0; }; + static inline void Dataflash_SendByte(const uint8_t Byte) {}; + static inline uint8_t Dataflash_ReceiveByte(void) { return 0; }; + static inline uint8_t Dataflash_GetSelectedChip(void) { return 0; }; + static inline void Dataflash_SelectChip(const uint8_t ChipMask) {}; + static inline void Dataflash_DeselectChip(void) {}; + static inline void Dataflash_SelectChipFromPage(const uint16_t PageAddress) {}; + static inline void Dataflash_ToggleSelectedChipCS(void) {}; + static inline void Dataflash_WaitWhileBusy(void) {}; + static inline void Dataflash_SendAddressBytes(uint16_t PageAddress, + const uint16_t BufferByte) {}; + #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 + +/** @} */ + |