X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/6a10d6b465be27db090d760dc0fbe722c94e4344..2a0c28e6e47c8a173f32fc99cd8666a2633c5c12:/LUFA/Drivers/Board/USBKEY/Dataflash.h

diff --git a/LUFA/Drivers/Board/USBKEY/Dataflash.h b/LUFA/Drivers/Board/USBKEY/Dataflash.h
index 848ae32d8..52681dedb 100644
--- a/LUFA/Drivers/Board/USBKEY/Dataflash.h
+++ b/LUFA/Drivers/Board/USBKEY/Dataflash.h
@@ -30,12 +30,18 @@
 
 /** \file
  *
- *  Board specific HWB driver header for the STK525.
+ *  Board specific Dataflash driver header for the STK525.
  *
  *  \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
+ *
+ *  @{
+ */
+
 #ifndef __DATAFLASH_USBKEY_H__
 #define __DATAFLASH_USBKEY_H__
 
@@ -74,5 +80,45 @@
 
 			/** 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
+
+/** @} */