diff options
Diffstat (limited to 'LUFA/Drivers/Board/XMEGA/A3BU_XPLAINED/Dataflash.h')
| -rw-r--r-- | LUFA/Drivers/Board/XMEGA/A3BU_XPLAINED/Dataflash.h | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/LUFA/Drivers/Board/XMEGA/A3BU_XPLAINED/Dataflash.h b/LUFA/Drivers/Board/XMEGA/A3BU_XPLAINED/Dataflash.h index abc8d85d1..672d4eb07 100644 --- a/LUFA/Drivers/Board/XMEGA/A3BU_XPLAINED/Dataflash.h +++ b/LUFA/Drivers/Board/XMEGA/A3BU_XPLAINED/Dataflash.h @@ -42,6 +42,11 @@ * * Board specific Dataflash driver header for the Atmel XMEGA B1 Xplained 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>PORTF.4</td><td>USARTD0 (In SPI Mode)</td></tr> + * </table> + * * @{ */ @@ -71,10 +76,10 @@ #define DATAFLASH_TOTALCHIPS 1 /** 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 0 + #define DATAFLASH_CHIP1 (1 << 4) /** Internal main memory page size for the board's dataflash ICs. */ #define DATAFLASH_PAGE_SIZE 1024 @@ -88,8 +93,10 @@ */ static inline void Dataflash_Init(void) { - DATAFLASH_CHIPCS_PORT.DIRSET = DATAFLASH_CHIPCS_MASK; - DATAFLASH_CHIPCS_PORT.OUTSET = DATAFLASH_CHIPCS_MASK; + DATAFLASH_CHIPCS_PORT.DIRSET = DATAFLASH_CHIPCS_MASK; + + PORTCFG.MPCMASK = DATAFLASH_CHIPCS_MASK; + DATAFLASH_CHIPCS_PORT.PIN0CTRL = PORT_INVEN_bm; } /** Sends a byte to the currently selected dataflash IC, and returns a byte from the dataflash. @@ -143,7 +150,8 @@ static inline void Dataflash_SelectChip(const uint8_t ChipMask) ATTR_ALWAYS_INLINE; static inline void Dataflash_SelectChip(const uint8_t ChipMask) { - DATAFLASH_CHIPCS_PORT.OUT = ((DATAFLASH_CHIPCS_PORT.OUT & ~DATAFLASH_CHIPCS_MASK) | ChipMask); + DATAFLASH_CHIPCS_PORT.OUTCLR = DATAFLASH_CHIPCS_MASK; + DATAFLASH_CHIPCS_PORT.OUTSET = ChipMask; } /** Deselects the current dataflash chip, so that no dataflash is selected. */ |