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Diffstat (limited to 'protocol/lufa/LUFA-120730/LUFA/CodeTemplates/DriverStubs/Dataflash.h')
| -rw-r--r-- | protocol/lufa/LUFA-120730/LUFA/CodeTemplates/DriverStubs/Dataflash.h | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/protocol/lufa/LUFA-120730/LUFA/CodeTemplates/DriverStubs/Dataflash.h b/protocol/lufa/LUFA-120730/LUFA/CodeTemplates/DriverStubs/Dataflash.h new file mode 100644 index 0000000000..d397f77edb --- /dev/null +++ b/protocol/lufa/LUFA-120730/LUFA/CodeTemplates/DriverStubs/Dataflash.h @@ -0,0 +1,220 @@ +/*
+ 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 LUFA Custom Board Dataflash Hardware Driver (Template)
+ *
+ * This is a stub driver header file, for implementing custom board
+ * layout hardware with compatible LUFA board specific drivers. If
+ * the library is configured to use the BOARD_USER board mode, this
+ * driver file should be completed and copied into the "/Board/" folder
+ * inside the application's folder.
+ *
+ * This stub is for the board-specific component of the LUFA Dataflash
+ * driver.
+*/
+
+#ifndef __DATAFLASH_USER_H__
+#define __DATAFLASH_USER_H__
+
+ /* Includes: */
+ // TODO: Add any required includes here
+
+ /* 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 // TODO: Replace this with a mask of all the /CS pins of all Dataflashes
+ #define DATAFLASH_CHIPCS_DDR // TODO: Replace with the DDR register name for the board's Dataflash ICs
+ #define DATAFLASH_CHIPCS_PORT // TODO: Replace with the PORT register name for the board's Dataflash ICs
+ #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 1 // TODO: Replace with the number of Dataflashes on the board, max 2
+
+ /** Mask for no dataflash chip selected. */
+ #define DATAFLASH_NO_CHIP DATAFLASH_CHIPCS_MASK
+
+ /** Mask for the first dataflash chip selected. */
+ #define DATAFLASH_CHIP1 // TODO: Replace with mask to hold /CS of first Dataflash low, and all others high
+
+ /** Mask for the second dataflash chip selected. */
+ #define DATAFLASH_CHIP2 // TODO: Replace with mask to hold /CS of second Dataflash low, and all others high
+
+ /** Internal main memory page size for the board's dataflash ICs. */
+ #define DATAFLASH_PAGE_SIZE // TODO: Replace with the page size for the Dataflash ICs
+
+ /** Total number of pages inside each of the board's dataflash ICs. */
+ #define DATAFLASH_PAGES // TODO: Replace with the total number of pages inside one of the Dataflash ICs
+
+ /* Inline Functions: */
+ /** Initializes 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;
+ }
+
+ /** 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;
+ static inline uint8_t Dataflash_TransferByte(const uint8_t Byte)
+ {
+ // TODO
+ }
+
+ /** 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;
+ static inline void Dataflash_SendByte(const uint8_t Byte)
+ {
+ // TODO
+ }
+
+ /** 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)
+ {
+ // TODO
+ }
+
+ /** 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
+ * 0 to ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1).
+ */
+ static inline void Dataflash_SelectChipFromPage(const uint16_t PageAddress)
+ {
+ Dataflash_DeselectChip();
+
+ if (PageAddress >= (DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS))
+ return;
+
+ #if (DATAFLASH_TOTALCHIPS == 2)
+ if (PageAddress & 0x01)
+ Dataflash_SelectChip(DATAFLASH_CHIP2);
+ else
+ Dataflash_SelectChip(DATAFLASH_CHIP1);
+ #else
+ Dataflash_SelectChip(DATAFLASH_CHIP1);
+ #endif
+ }
+
+ /** 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-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)
+ {
+ #if (DATAFLASH_TOTALCHIPS == 2)
+ PageAddress >>= 1;
+ #endif
+
+ Dataflash_SendByte(PageAddress >> 5);
+ Dataflash_SendByte((PageAddress << 3) | (BufferByte >> 8));
+ Dataflash_SendByte(BufferByte);
+ }
+
+#endif
+
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