X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/4d131de85b386b1ae948032e06831b0250e89070..40e1caa2da06d6d4699d5dc3dafb3d34b81f23f7:/LUFA/Drivers/Board/AVR8/USBKEY/Dataflash.h

diff --git a/LUFA/Drivers/Board/AVR8/USBKEY/Dataflash.h b/LUFA/Drivers/Board/AVR8/USBKEY/Dataflash.h
index 1e34a3953..79ebac31a 100644
--- a/LUFA/Drivers/Board/AVR8/USBKEY/Dataflash.h
+++ b/LUFA/Drivers/Board/AVR8/USBKEY/Dataflash.h
@@ -1,13 +1,13 @@
 /*
              LUFA Library
-     Copyright (C) Dean Camera, 2012.
+     Copyright (C) Dean Camera, 2015.
 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*
-  Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2015  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
@@ -18,7 +18,7 @@
   advertising or publicity pertaining to distribution of the
   software without specific, written prior permission.
 
-  The author disclaim all warranties with regard to this
+  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
@@ -42,6 +42,12 @@
  *
  *  Board specific Dataflash driver header for the Atmel USBKEY board.
  *
+ *  <table>
+ *    <tr><th>Name</th><th>Info</th><th>Select Pin</th><th>SPI Port</th></tr>
+ *    <tr><td>DATAFLASH_CHIP1</td><td>AT45DB642D (8MB)</td><td>PORTE.0</td><td>SPI0</td></tr>
+ *    <tr><td>DATAFLASH_CHIP2</td><td>AT45DB642D (8MB)</td><td>PORTE.1</td><td>SPI0</td></tr>
+ *  </table>
+ *
  *  @{
  */
 
@@ -51,6 +57,7 @@
 	/* Includes: */
 		#include "../../../../Common/Common.h"
 		#include "../../../Misc/AT45DB642D.h"
+		#include "../../../Peripheral/SPI.h"
 
 	/* Preprocessor Checks: */
 		#if !defined(__INCLUDE_FROM_DATAFLASH_H)
@@ -60,7 +67,7 @@
 	/* Private Interface - For use in library only: */
 	#if !defined(__DOXYGEN__)
 		/* Macros: */
-			#define DATAFLASH_CHIPCS_MASK                ((1 << 1) | (1 << 0))
+			#define DATAFLASH_CHIPCS_MASK                (DATAFLASH_CHIP1 | DATAFLASH_CHIP2)
 			#define DATAFLASH_CHIPCS_DDR                 DDRE
 			#define DATAFLASH_CHIPCS_PORT                PORTE
 	#endif
@@ -71,13 +78,13 @@
 			#define DATAFLASH_TOTALCHIPS                 2
 
 			/** Mask for no dataflash chip selected. */
-			#define DATAFLASH_NO_CHIP                    DATAFLASH_CHIPCS_MASK
+			#define DATAFLASH_NO_CHIP                    0
 
 			/** Mask for the first dataflash chip selected. */
-			#define DATAFLASH_CHIP1                      (1 << 1)
+			#define DATAFLASH_CHIP1                      (1 << 0)
 
 			/** Mask for the second dataflash chip selected. */
-			#define DATAFLASH_CHIP2                      (1 << 0)
+			#define DATAFLASH_CHIP2                      (1 << 1)
 
 			/** Internal main memory page size for the board's dataflash ICs. */
 			#define DATAFLASH_PAGE_SIZE                  1024
@@ -87,12 +94,14 @@
 
 		/* 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.
+			 *  The appropriate SPI interface will be automatically configured.
 			 */
 			static inline void Dataflash_Init(void)
 			{
 				DATAFLASH_CHIPCS_DDR  |= DATAFLASH_CHIPCS_MASK;
 				DATAFLASH_CHIPCS_PORT |= DATAFLASH_CHIPCS_MASK;
+
+				SPI_Init(SPI_SPEED_FCPU_DIV_2 | SPI_ORDER_MSB_FIRST | SPI_SCK_LEAD_FALLING | SPI_SAMPLE_TRAILING | SPI_MODE_MASTER);
 			}
 
 			/** Sends a byte to the currently selected dataflash IC, and returns a byte from the dataflash.
@@ -130,23 +139,23 @@
 			/** 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).
+			 *          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);
+				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
+			 *  \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;
 			static inline void Dataflash_SelectChip(const uint8_t ChipMask)
 			{
-				DATAFLASH_CHIPCS_PORT = ((DATAFLASH_CHIPCS_PORT & ~DATAFLASH_CHIPCS_MASK) | ChipMask);
+				DATAFLASH_CHIPCS_PORT = ((DATAFLASH_CHIPCS_PORT | DATAFLASH_CHIPCS_MASK) & ~ChipMask);
 			}
 
 			/** Deselects the current dataflash chip, so that no dataflash is selected. */
@@ -172,10 +181,14 @@
 				if (PageAddress >= (DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS))
 				  return;
 
-				if (PageAddress & 0x01)
-				  Dataflash_SelectChip(DATAFLASH_CHIP2);
-				else
-				  Dataflash_SelectChip(DATAFLASH_CHIP1);
+				#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
@@ -209,7 +222,9 @@
 			static inline void Dataflash_SendAddressBytes(uint16_t PageAddress,
 			                                              const uint16_t BufferByte)
 			{
-				PageAddress >>= 1;
+				#if (DATAFLASH_TOTALCHIPS == 2)
+					PageAddress >>= 1;
+				#endif
 
 				Dataflash_SendByte(PageAddress >> 5);
 				Dataflash_SendByte((PageAddress << 3) | (BufferByte >> 8));