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@ -70,44 +70,44 @@
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* SPI_Init(SPI_SPEED_FCPU_DIV_2 | SPI_ORDER_MSB_FIRST | SPI_SCK_LEAD_FALLING |
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* SPI_SAMPLE_TRAILING | SPI_MODE_MASTER);
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* Dataflash_Init();
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*
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*
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* uint8_t WriteBuffer[DATAFLASH_PAGE_SIZE];
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* uint8_t ReadBuffer[DATAFLASH_PAGE_SIZE];
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*
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*
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* // Fill page write buffer with a repeating pattern
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* for (uint16_t i = 0; i < DATAFLASH_PAGE_SIZE; i++)
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* WriteBuffer[i] = (i & 0xFF);
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*
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*
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* // Must select the chip of interest first before operating on it
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* Dataflash_SelectChip(DATAFLASH_CHIP1);
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*
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*
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* // Write to the Dataflash's first internal memory buffer
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* printf("Writing data to first dataflash buffer:\r\n");
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* Dataflash_SendByte(DF_CMD_BUFF1WRITE);
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* Dataflash_SendAddressBytes(0, 0);
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*
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*
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* for (uint16_t i = 0; i < DATAFLASH_PAGE_SIZE; i++)
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* Dataflash_SendByte(WriteBuffer[i]);
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*
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*
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* // Commit the Dataflash's first memory buffer to the non-volatile FLASH memory
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* printf("Committing page to non-volatile memory page index 5:\r\n");
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* Dataflash_SendByte(DF_CMD_BUFF1TOMAINMEMWITHERASE);
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* Dataflash_SendAddressBytes(5, 0);
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* Dataflash_WaitWhileBusy();
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*
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*
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* // Read the page from non-volatile FLASH memory into the Dataflash's second memory buffer
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* printf("Reading data into second dataflash buffer:\r\n");
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* Dataflash_SendByte(DF_CMD_MAINMEMTOBUFF2);
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* Dataflash_SendAddressBytes(5, 0);
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* Dataflash_WaitWhileBusy();
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*
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*
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* // Read the Dataflash's second internal memory buffer
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* Dataflash_SendByte(DF_CMD_BUFF2READ);
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* Dataflash_SendAddressBytes(0, 0);
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*
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*
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* for (uint16_t i = 0; i < DATAFLASH_PAGE_SIZE; i++)
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* ReadBuffer[i] = Dataflash_ReceiveByte();
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*
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*
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* // Deselect the chip after use
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* Dataflash_DeselectChip();
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* \endcode
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@ -131,18 +131,16 @@
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/* Public Interface - May be used in end-application: */
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/* Macros: */
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#if !defined(__DOXYGEN__)
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#define __GET_DATAFLASH_MASK2(x, y) x ## y
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#define __GET_DATAFLASH_MASK(x) __GET_DATAFLASH_MASK2(DATAFLASH_CHIP,x)
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#endif
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/** Retrieves the Dataflash chip select mask for the given Dataflash chip index.
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*
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* \param[in] index Index of the dataflash chip mask to retrieve
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* \attention This macro will only work correctly on chip index numbers that are compile-time
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* constants defined by the preprocessor.
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*
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* \param[in] index Index of the dataflash chip mask to retrieve.
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*
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* \return Mask for the given Dataflash chip's /CS pin
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*/
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#define DATAFLASH_CHIP_MASK(index) __GET_DATAFLASH_MASK(index)
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#define DATAFLASH_CHIP_MASK(index) CONCAT_EXPANDED(DATAFLASH_CHIP, index)
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/* Inline Functions: */
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/** Initializes the dataflash driver so that commands and data may be sent to an attached dataflash IC.
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Dean Camera
12 years ago