-
- /* Inline Functions: */
- /** Initializes the dataflash driver so that commands and data may be sent to an attached dataflash IC.
- * The AVR's SPI driver MUST be initialized before any of the dataflash commands are used.
- */
- static inline void Dataflash_Init(void)
- {
- DATAFLASH_CHIPCS_DDR |= DATAFLASH_CHIPCS_MASK;
- DATAFLASH_CHIPCS_PORT |= DATAFLASH_CHIPCS_MASK;
- }
-
- /** 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)
- {
- uint8_t SelectedChipMask = Dataflash_GetSelectedChip();
-
- Dataflash_DeselectChip();
- Dataflash_SelectChip(SelectedChipMask);
- }
-
- /** Spin-loops while the currently selected dataflash is busy executing a command, such as a main
- * memory page program or main memory to buffer transfer.
- */
- static inline void Dataflash_WaitWhileBusy(void)
- {
- Dataflash_ToggleSelectedChipCS();
- Dataflash_SendByte(DF_CMD_GETSTATUS);
- while (!(Dataflash_ReceiveByte() & DF_STATUS_READY));
- Dataflash_ToggleSelectedChipCS();
- }
-
- /** 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);
-
- /** 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);