X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/d49cc0f7830319e701294e19937fae4de26ae8e2..2f341b6f47c855e112b74995bacf1d3b5ad75b09:/LUFA/Drivers/Board/USBKEY/Dataflash.h diff --git a/LUFA/Drivers/Board/USBKEY/Dataflash.h b/LUFA/Drivers/Board/USBKEY/Dataflash.h index 96cc3ad2d..e54f0d838 100644 --- a/LUFA/Drivers/Board/USBKEY/Dataflash.h +++ b/LUFA/Drivers/Board/USBKEY/Dataflash.h @@ -1,129 +1,189 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2010. - - dean [at] fourwalledcubicle [dot] com - www.fourwalledcubicle.com -*/ - -/* - Copyright 2010 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 - * - * Board specific Dataflash driver header for the USBKEY. - * - * \note This file should not be included directly. It is automatically included as needed by the dataflash driver - * dispatch header located in LUFA/Drivers/Board/Dataflash.h. - */ - -/** \ingroup Group_Dataflash - * @defgroup Group_Dataflash_USBKEY USBKEY - * - * Board specific Dataflash driver header for the USBKEY board. - * - * \note This file should not be included directly. It is automatically included as needed by the dataflash driver - * dispatch header located in LUFA/Drivers/Board/Dataflash.h. - * - * @{ - */ - -#ifndef __DATAFLASH_USBKEY_H__ -#define __DATAFLASH_USBKEY_H__ - - /* Includes: */ - #include "AT45DB642D.h" - - /* Preprocessor Checks: */ - #if !defined(__INCLUDE_FROM_DATAFLASH_H) - #error Do not include this file directly. Include LUFA/Drivers/Board/Dataflash.h instead. - #endif - - /* Private Interface - For use in library only: */ - #if !defined(__DOXYGEN__) - /* Macros: */ - #define DATAFLASH_CHIPCS_MASK ((1 << 1) | (1 << 0)) - #define DATAFLASH_CHIPCS_DDR DDRE - #define DATAFLASH_CHIPCS_PORT PORTE - #endif - - /* Public Interface - May be used in end-application: */ - /* Macros: */ - /** Constant indicating the total number of dataflash ICs mounted on the selected board. */ - #define DATAFLASH_TOTALCHIPS 2 - - /** Mask for no dataflash chip selected. */ - #define DATAFLASH_NO_CHIP DATAFLASH_CHIPCS_MASK - - /** Mask for the first dataflash chip selected. */ - #define DATAFLASH_CHIP1 (1 << 1) - - /** Mask for the second dataflash chip selected. */ - #define DATAFLASH_CHIP2 (1 << 0) - - /** Internal main memory page size for the board's dataflash ICs. */ - #define DATAFLASH_PAGE_SIZE 1024 - - /** Total number of pages inside each of the board's dataflash ICs. */ - #define DATAFLASH_PAGES 8192 - - /* Inline Functions: */ - /** 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) - { - Dataflash_DeselectChip(); - - if (PageAddress >= (DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS)) - return; - - if (PageAddress & 0x01) - Dataflash_SelectChip(DATAFLASH_CHIP2); - else - Dataflash_SelectChip(DATAFLASH_CHIP1); - } - - /** 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) - { - PageAddress >>= 1; - - Dataflash_SendByte(PageAddress >> 5); - Dataflash_SendByte((PageAddress << 3) | (BufferByte >> 8)); - Dataflash_SendByte(BufferByte); - } - -#endif - -/** @} */ +/* + LUFA Library + Copyright (C) Dean Camera, 2011. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2011 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 Board specific Dataflash driver header for the Atmel USBKEY. + * \copydetails Group_Dataflash_USBKEY + * + * \note This file should not be included directly. It is automatically included as needed by the dataflash driver + * dispatch header located in LUFA/Drivers/Board/Dataflash.h. + */ + +/** \ingroup Group_Dataflash + * \defgroup Group_Dataflash_USBKEY USBKEY + * \brief Board specific Dataflash driver header for the Atmel USBKEY. + * + * Board specific Dataflash driver header for the Atmel USBKEY board. + * + * @{ + */ + +#ifndef __DATAFLASH_USBKEY_H__ +#define __DATAFLASH_USBKEY_H__ + + /* Includes: */ + #include "../../Misc/AT45DB642D.h" + + /* Preprocessor Checks: */ + #if !defined(__INCLUDE_FROM_DATAFLASH_H) + #error Do not include this file directly. Include LUFA/Drivers/Board/Dataflash.h instead. + #endif + + /* Private Interface - For use in library only: */ + #if !defined(__DOXYGEN__) + /* Macros: */ + #define DATAFLASH_CHIPCS_MASK ((1 << 1) | (1 << 0)) + #define DATAFLASH_CHIPCS_DDR DDRE + #define DATAFLASH_CHIPCS_PORT PORTE + #endif + + /* Public Interface - May be used in end-application: */ + /* Macros: */ + /** Constant indicating the total number of dataflash ICs mounted on the selected board. */ + #define DATAFLASH_TOTALCHIPS 2 + + /** Mask for no dataflash chip selected. */ + #define DATAFLASH_NO_CHIP DATAFLASH_CHIPCS_MASK + + /** Mask for the first dataflash chip selected. */ + #define DATAFLASH_CHIP1 (1 << 1) + + /** Mask for the second dataflash chip selected. */ + #define DATAFLASH_CHIP2 (1 << 0) + + /** Internal main memory page size for the board's dataflash ICs. */ + #define DATAFLASH_PAGE_SIZE 1024 + + /** Total number of pages inside each of the board's dataflash ICs. */ + #define DATAFLASH_PAGES 8192 + + /* Inline Functions: */ + /** Initialises the dataflash driver so that commands and data may be sent to an attached dataflash IC. + * The microcontroller'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; + } + + /** 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) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT; + static inline uint8_t Dataflash_GetSelectedChip(void) + { + return (DATAFLASH_CHIPCS_PORT & DATAFLASH_CHIPCS_MASK); + } + + /** 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(const uint8_t ChipMask) ATTR_ALWAYS_INLINE; + static inline void Dataflash_SelectChip(const uint8_t ChipMask) + { + DATAFLASH_CHIPCS_PORT = ((DATAFLASH_CHIPCS_PORT & ~DATAFLASH_CHIPCS_MASK) | ChipMask); + } + + /** Deselects the current dataflash chip, so that no dataflash is selected. */ + static inline void Dataflash_DeselectChip(void) ATTR_ALWAYS_INLINE; + static inline void Dataflash_DeselectChip(void) + { + Dataflash_SelectChip(DATAFLASH_NO_CHIP); + } + + /** 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) + { + Dataflash_DeselectChip(); + + if (PageAddress >= (DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS)) + return; + + if (PageAddress & 0x01) + Dataflash_SelectChip(DATAFLASH_CHIP2); + else + Dataflash_SelectChip(DATAFLASH_CHIP1); + } + + /** 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(); + } + + /** 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) + { + PageAddress >>= 1; + + Dataflash_SendByte(PageAddress >> 5); + Dataflash_SendByte((PageAddress << 3) | (BufferByte >> 8)); + Dataflash_SendByte(BufferByte); + } + +#endif + +/** @} */ +