X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/071e02c6b6b4837fa9cf0b6d4c749994e02638d7..32f2d59bc0aec1e7c6b88301e3bd7a58ddc0c8c8:/LUFA/Drivers/Board/Dataflash.h diff --git a/LUFA/Drivers/Board/Dataflash.h b/LUFA/Drivers/Board/Dataflash.h index 5281a1936..c9f66054b 100644 --- a/LUFA/Drivers/Board/Dataflash.h +++ b/LUFA/Drivers/Board/Dataflash.h @@ -1,21 +1,21 @@ /* 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 @@ -30,47 +30,100 @@ /** \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" { @@ -82,7 +135,7 @@ #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 @@ -90,144 +143,110 @@ * \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 /** @} */ +