Board Dataflash driver now allows for dataflash ICs which use different shifts for...

[pub/USBasp.git] / LUFA / DriverStubs / Dataflash.h

diff --git a/LUFA/DriverStubs/Dataflash.h b/LUFA/DriverStubs/Dataflash.h
index 0bef94e..41581a7 100644 (file)
--- a/LUFA/DriverStubs/Dataflash.h
+++ b/LUFA/DriverStubs/Dataflash.h
@@ -78,4 +78,40 @@
                        /** Total number of pages inside each of the board's dataflash ICs. */\r
                        #define DATAFLASH_PAGES                      // TODO: Replace with the total number of pages inside one of the Dataflash ICs\r
 \r
+               /* Inline Functions: */\r
+                       /** Selects a dataflash IC from the given page number, which should range from 0 to\r
+                        *  ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1). For boards containing only one\r
+                        *  dataflash IC, this will select DATAFLASH_CHIP1. If the given page number is outside\r
+                        *  the total number of pages contained in the boards dataflash ICs, all dataflash ICs\r
+                        *  are deselected.\r
+                        *\r
+                        *  \param PageAddress  Address of the page to manipulate, ranging from\r
+                        *                      ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1).\r
+                        */\r
+                       static inline void Dataflash_SelectChipFromPage(const uint16_t PageAddress)\r
+                       {\r
+                               Dataflash_DeselectChip();\r
+                               \r
+                               if (PageAddress >= (DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS))\r
+                                 return;\r
+\r
+                               // TODO: If more than one dataflash chip, select the correct chip from the page address here\r
+                               Dataflash_SelectChip(DATAFLASH_CHIP1);\r
+                       }\r
+\r
+                       /** Sends a set of page and buffer address bytes to the currently selected dataflash IC, for use with\r
+                        *  dataflash commands which require a complete 24-byte address.\r
+                        *\r
+                        *  \param PageAddress  Page address within the selected dataflash IC\r
+                        *  \param BufferByte   Address within the dataflash's buffer\r
+                        */\r
+                       static inline void Dataflash_SendAddressBytes(uint16_t PageAddress, const uint16_t BufferByte)\r
+                       {       \r
+                               // TODO: If more than one dataflash chip, adjust absolute page address to be correct for the current chip,\r
+                               //       also the shifts may need to be altered to suit the dataflash model being used                          \r
+                               Dataflash_SendByte(PageAddress >> 5);\r
+                               Dataflash_SendByte((PageAddress << 3) | (BufferByte >> 8));\r
+                               Dataflash_SendByte(BufferByte);\r
+                       }\r
+                       \r
 #endif\r