diff options
Diffstat (limited to 'LUFA/Drivers/Board/Dataflash.h')
-rw-r--r-- | LUFA/Drivers/Board/Dataflash.h | 102 |
1 files changed, 38 insertions, 64 deletions
diff --git a/LUFA/Drivers/Board/Dataflash.h b/LUFA/Drivers/Board/Dataflash.h index 2b682d7c9..aa0c0892f 100644 --- a/LUFA/Drivers/Board/Dataflash.h +++ b/LUFA/Drivers/Board/Dataflash.h @@ -52,21 +52,7 @@ /* Includes: */
#include "../AT90USBXXX/SPI.h"
#include "../../Common/Common.h"
-
- #if !defined(BOARD)
- #error BOARD must be set in makefile to a value specified in BoardTypes.h.
- #elif (BOARD == BOARD_USBKEY)
- #include "USBKEY/Dataflash.h"
- #elif (BOARD == BOARD_STK525)
- #include "STK525/Dataflash.h"
- #elif (BOARD == BOARD_STK526)
- #include "STK526/Dataflash.h"
- #elif (BOARD == BOARD_USER)
- #include "Board/Dataflash.h"
- #else
- #error The selected board does not contain a dataflash IC.
- #endif
-
+
/* Enable C linkage for C++ Compilers: */
#if defined(__cplusplus)
extern "C" {
@@ -89,19 +75,6 @@ #define Dataflash_DeselectChip() Dataflash_SelectChip(DATAFLASH_NO_CHIP)
/* Inline Functions: */
- /** Initializes the dataflash driver (including the SPI driver) so that commands and data may be
- * sent to an attached dataflash IC.
- *
- * \param PrescalerMask SPI prescaler mask, see SPI.h documentation
- */
- static inline void Dataflash_Init(const uint8_t PrescalerMask)
- {
- DATAFLASH_CHIPCS_DDR |= DATAFLASH_CHIPCS_MASK;
- DATAFLASH_CHIPCS_PORT |= DATAFLASH_CHIPCS_MASK;
-
- SPI_Init(PrescalerMask, true);
- }
-
/** Sends a byte to the currently selected dataflash IC, and returns a byte from the dataflash.
*
* \param Byte of data to send to the dataflash
@@ -133,21 +106,45 @@ {
return SPI_ReceiveByte();
}
+
+ /* Includes: */
+ #if !defined(BOARD)
+ #error BOARD must be set in makefile to a value specified in BoardTypes.h.
+ #elif (BOARD == BOARD_USBKEY)
+ #include "USBKEY/Dataflash.h"
+ #elif (BOARD == BOARD_STK525)
+ #include "STK525/Dataflash.h"
+ #elif (BOARD == BOARD_STK526)
+ #include "STK526/Dataflash.h"
+ #elif (BOARD == BOARD_USER)
+ #include "Board/Dataflash.h"
+ #else
+ #error The selected board does not contain a dataflash IC.
+ #endif
+
+ /* Inline Functions: */
+ /** Initializes the dataflash driver (including the SPI driver) so that commands and data may be
+ * sent to an attached dataflash IC.
+ *
+ * \param PrescalerMask SPI prescaler mask, see SPI.h documentation
+ */
+ static inline void Dataflash_Init(const uint8_t PrescalerMask)
+ {
+ DATAFLASH_CHIPCS_DDR |= DATAFLASH_CHIPCS_MASK;
+ DATAFLASH_CHIPCS_PORT |= DATAFLASH_CHIPCS_MASK;
+
+ SPI_Init(PrescalerMask, true);
+ }
/** 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)
{
- #if (DATAFLASH_TOTALCHIPS == 2)
- uint8_t SelectedChipMask = Dataflash_GetSelectedChip();
+ uint8_t SelectedChipMask = Dataflash_GetSelectedChip();
- Dataflash_DeselectChip();
- Dataflash_SelectChip(SelectedChipMask);
- #else
- Dataflash_DeselectChip();
- Dataflash_SelectChip(DATAFLASH_CHIP1);
- #endif
+ Dataflash_DeselectChip();
+ Dataflash_SelectChip(SelectedChipMask);
}
/** Spinloops while the currently selected dataflash is busy executing a command, such as a main
@@ -162,28 +159,14 @@ /** 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.
+ * 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 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 (DATAFLASH_TOTALCHIPS == 2)
- if (PageAddress & 0x01)
- Dataflash_SelectChip(DATAFLASH_CHIP2);
- else
- Dataflash_SelectChip(DATAFLASH_CHIP1);
- #else
- Dataflash_SelectChip(DATAFLASH_CHIP1);
- #endif
- }
+ static inline void Dataflash_SelectChipFromPage(const uint16_t PageAddress);
/** 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.
@@ -191,16 +174,7 @@ * \param PageAddress Page address within the selected dataflash IC
* \param 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);
- }
+ static inline void Dataflash_SendAddressBytes(uint16_t PageAddress, const uint16_t BufferByte);
/* Disable C linkage for C++ Compilers: */
#if defined(__cplusplus)
|