From 60b30c036397cb5627fa374bb930794b225daa29 Mon Sep 17 00:00:00 2001
From: Jack Humbert <jack.humb@gmail.com>
Date: Fri, 7 Jul 2017 11:55:23 -0400
Subject: Squashed 'lib/lufa/' content from commit 385d40300
git-subtree-dir: lib/lufa
git-subtree-split: 385d4030035dbaf41591309dbde47653bd03841b
---
LUFA/Drivers/Board/Dataflash.h | 264 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 264 insertions(+)
create mode 100644 LUFA/Drivers/Board/Dataflash.h
(limited to 'LUFA/Drivers/Board/Dataflash.h')
diff --git a/LUFA/Drivers/Board/Dataflash.h b/LUFA/Drivers/Board/Dataflash.h
new file mode 100644
index 0000000000..b634dccaa6
--- /dev/null
+++ b/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
+
+/** @} */
+
--
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