-/*\r
- LUFA Library\r
- Copyright (C) Dean Camera, 2011.\r
-\r
- dean [at] fourwalledcubicle [dot] com\r
- www.lufa-lib.org\r
-*/\r
-\r
-/*\r
- Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
- Permission to use, copy, modify, distribute, and sell this\r
- software and its documentation for any purpose is hereby granted\r
- without fee, provided that the above copyright notice appear in\r
- all copies and that both that the copyright notice and this\r
- permission notice and warranty disclaimer appear in supporting\r
- documentation, and that the name of the author not be used in\r
- advertising or publicity pertaining to distribution of the\r
- software without specific, written prior permission.\r
-\r
- The author disclaim all warranties with regard to this\r
- software, including all implied warranties of merchantability\r
- and fitness. In no event shall the author be liable for any\r
- special, indirect or consequential damages or any damages\r
- whatsoever resulting from loss of use, data or profits, whether\r
- in an action of contract, negligence or other tortious action,\r
- arising out of or in connection with the use or performance of\r
- this software.\r
-*/\r
-\r
-/** \file\r
- *\r
- * Functions to manage the physical Dataflash media, including reading and writing of\r
- * blocks of data. These functions are called by the SCSI layer when data must be stored\r
- * or retrieved to/from the physical storage media. If a different media is used (such\r
- * as a SD card or EEPROM), functions similar to these will need to be generated.\r
- */\r
-\r
-#define INCLUDE_FROM_DATAFLASHMANAGER_C\r
-#include "DataflashManager.h"\r
-\r
-/** Writes blocks (OS blocks, not Dataflash pages) to the storage medium, the board Dataflash IC(s), from\r
- * the pre-selected data OUT endpoint. This routine reads in OS sized blocks from the endpoint and writes\r
- * them to the Dataflash in Dataflash page sized blocks.\r
- *\r
- * \param[in] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state\r
- * \param[in] BlockAddress Data block starting address for the write sequence\r
- * \param[in] TotalBlocks Number of blocks of data to write\r
- */\r
-void DataflashManager_WriteBlocks(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo,\r
- const uint32_t BlockAddress,\r
- uint16_t TotalBlocks)\r
-{\r
- uint16_t CurrDFPage = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) / DATAFLASH_PAGE_SIZE);\r
- uint16_t CurrDFPageByte = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) % DATAFLASH_PAGE_SIZE);\r
- uint8_t CurrDFPageByteDiv16 = (CurrDFPageByte >> 4);\r
- bool UsingSecondBuffer = false;\r
-\r
- /* Select the correct starting Dataflash IC for the block requested */\r
- Dataflash_SelectChipFromPage(CurrDFPage);\r
-\r
-#if (DATAFLASH_PAGE_SIZE > VIRTUAL_MEMORY_BLOCK_SIZE)\r
- /* Copy selected dataflash's current page contents to the Dataflash buffer */\r
- Dataflash_SendByte(DF_CMD_MAINMEMTOBUFF1);\r
- Dataflash_SendAddressBytes(CurrDFPage, 0);\r
- Dataflash_WaitWhileBusy();\r
-#endif\r
-\r
- /* Send the Dataflash buffer write command */\r
- Dataflash_SendByte(DF_CMD_BUFF1WRITE);\r
- Dataflash_SendAddressBytes(0, CurrDFPageByte);\r
-\r
- /* Wait until endpoint is ready before continuing */\r
- if (Endpoint_WaitUntilReady())\r
- return;\r
-\r
- while (TotalBlocks)\r
- {\r
- uint8_t BytesInBlockDiv16 = 0;\r
-\r
- /* Write an endpoint packet sized data block to the Dataflash */\r
- while (BytesInBlockDiv16 < (VIRTUAL_MEMORY_BLOCK_SIZE >> 4))\r
- {\r
- /* Check if the endpoint is currently empty */\r
- if (!(Endpoint_IsReadWriteAllowed()))\r
- {\r
- /* Clear the current endpoint bank */\r
- Endpoint_ClearOUT();\r
-\r
- /* Wait until the host has sent another packet */\r
- if (Endpoint_WaitUntilReady())\r
- return;\r
- }\r
-\r
- /* Check if end of Dataflash page reached */\r
- if (CurrDFPageByteDiv16 == (DATAFLASH_PAGE_SIZE >> 4))\r
- {\r
- /* Write the Dataflash buffer contents back to the Dataflash page */\r
- Dataflash_WaitWhileBusy();\r
- Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2TOMAINMEMWITHERASE : DF_CMD_BUFF1TOMAINMEMWITHERASE);\r
- Dataflash_SendAddressBytes(CurrDFPage, 0);\r
-\r
- /* Reset the Dataflash buffer counter, increment the page counter */\r
- CurrDFPageByteDiv16 = 0;\r
- CurrDFPage++;\r
-\r
- /* Once all the Dataflash ICs have had their first buffers filled, switch buffers to maintain throughput */\r
- if (Dataflash_GetSelectedChip() == DATAFLASH_CHIP_MASK(DATAFLASH_TOTALCHIPS))\r
- UsingSecondBuffer = !(UsingSecondBuffer);\r
-\r
- /* Select the next Dataflash chip based on the new Dataflash page index */\r
- Dataflash_SelectChipFromPage(CurrDFPage);\r
-\r
-#if (DATAFLASH_PAGE_SIZE > VIRTUAL_MEMORY_BLOCK_SIZE)\r
- /* If less than one Dataflash page remaining, copy over the existing page to preserve trailing data */\r
- if ((TotalBlocks * (VIRTUAL_MEMORY_BLOCK_SIZE >> 4)) < (DATAFLASH_PAGE_SIZE >> 4))\r
- {\r
- /* Copy selected dataflash's current page contents to the Dataflash buffer */\r
- Dataflash_WaitWhileBusy();\r
- Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_MAINMEMTOBUFF2 : DF_CMD_MAINMEMTOBUFF1);\r
- Dataflash_SendAddressBytes(CurrDFPage, 0);\r
- Dataflash_WaitWhileBusy();\r
- }\r
-#endif\r
-\r
- /* Send the Dataflash buffer write command */\r
- Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2WRITE : DF_CMD_BUFF1WRITE);\r
- Dataflash_SendAddressBytes(0, 0);\r
- }\r
-\r
- /* Write one 16-byte chunk of data to the Dataflash */\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
- Dataflash_SendByte(Endpoint_Read_8());\r
-\r
- /* Increment the Dataflash page 16 byte block counter */\r
- CurrDFPageByteDiv16++;\r
-\r
- /* Increment the block 16 byte block counter */\r
- BytesInBlockDiv16++;\r
-\r
- /* Check if the current command is being aborted by the host */\r
- if (MSInterfaceInfo->State.IsMassStoreReset)\r
- return;\r
- }\r
-\r
- /* Decrement the blocks remaining counter and reset the sub block counter */\r
- TotalBlocks--;\r
- }\r
-\r
- /* Write the Dataflash buffer contents back to the Dataflash page */\r
- Dataflash_WaitWhileBusy();\r
- Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2TOMAINMEMWITHERASE : DF_CMD_BUFF1TOMAINMEMWITHERASE);\r
- Dataflash_SendAddressBytes(CurrDFPage, 0x00);\r
- Dataflash_WaitWhileBusy();\r
-\r
- /* If the endpoint is empty, clear it ready for the next packet from the host */\r
- if (!(Endpoint_IsReadWriteAllowed()))\r
- Endpoint_ClearOUT();\r
-\r
- /* Deselect all Dataflash chips */\r
- Dataflash_DeselectChip();\r
-}\r
-\r
-/** Reads blocks (OS blocks, not Dataflash pages) from the storage medium, the board Dataflash IC(s), into\r
- * the pre-selected data IN endpoint. This routine reads in Dataflash page sized blocks from the Dataflash\r
- * and writes them in OS sized blocks to the endpoint.\r
- *\r
- * \param[in] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state\r
- * \param[in] BlockAddress Data block starting address for the read sequence\r
- * \param[in] TotalBlocks Number of blocks of data to read\r
- */\r
-void DataflashManager_ReadBlocks(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo,\r
- const uint32_t BlockAddress,\r
- uint16_t TotalBlocks)\r
-{\r
- uint16_t CurrDFPage = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) / DATAFLASH_PAGE_SIZE);\r
- uint16_t CurrDFPageByte = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) % DATAFLASH_PAGE_SIZE);\r
- uint8_t CurrDFPageByteDiv16 = (CurrDFPageByte >> 4);\r
-\r
- /* Select the correct starting Dataflash IC for the block requested */\r
- Dataflash_SelectChipFromPage(CurrDFPage);\r
-\r
- /* Send the Dataflash main memory page read command */\r
- Dataflash_SendByte(DF_CMD_MAINMEMPAGEREAD);\r
- Dataflash_SendAddressBytes(CurrDFPage, CurrDFPageByte);\r
- Dataflash_SendByte(0x00);\r
- Dataflash_SendByte(0x00);\r
- Dataflash_SendByte(0x00);\r
- Dataflash_SendByte(0x00);\r
-\r
- /* Wait until endpoint is ready before continuing */\r
- if (Endpoint_WaitUntilReady())\r
- return;\r
-\r
- while (TotalBlocks)\r
- {\r
- uint8_t BytesInBlockDiv16 = 0;\r
-\r
- /* Write an endpoint packet sized data block to the Dataflash */\r
- while (BytesInBlockDiv16 < (VIRTUAL_MEMORY_BLOCK_SIZE >> 4))\r
- {\r
- /* Check if the endpoint is currently full */\r
- if (!(Endpoint_IsReadWriteAllowed()))\r
- {\r
- /* Clear the endpoint bank to send its contents to the host */\r
- Endpoint_ClearIN();\r
-\r
- /* Wait until the endpoint is ready for more data */\r
- if (Endpoint_WaitUntilReady())\r
- return;\r
- }\r
-\r
- /* Check if end of Dataflash page reached */\r
- if (CurrDFPageByteDiv16 == (DATAFLASH_PAGE_SIZE >> 4))\r
- {\r
- /* Reset the Dataflash buffer counter, increment the page counter */\r
- CurrDFPageByteDiv16 = 0;\r
- CurrDFPage++;\r
-\r
- /* Select the next Dataflash chip based on the new Dataflash page index */\r
- Dataflash_SelectChipFromPage(CurrDFPage);\r
-\r
- /* Send the Dataflash main memory page read command */\r
- Dataflash_SendByte(DF_CMD_MAINMEMPAGEREAD);\r
- Dataflash_SendAddressBytes(CurrDFPage, 0);\r
- Dataflash_SendByte(0x00);\r
- Dataflash_SendByte(0x00);\r
- Dataflash_SendByte(0x00);\r
- Dataflash_SendByte(0x00);\r
- }\r
-\r
- /* Read one 16-byte chunk of data from the Dataflash */\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
- Endpoint_Write_8(Dataflash_ReceiveByte());\r
-\r
- /* Increment the Dataflash page 16 byte block counter */\r
- CurrDFPageByteDiv16++;\r
-\r
- /* Increment the block 16 byte block counter */\r
- BytesInBlockDiv16++;\r
-\r
- /* Check if the current command is being aborted by the host */\r
- if (MSInterfaceInfo->State.IsMassStoreReset)\r
- return;\r
- }\r
-\r
- /* Decrement the blocks remaining counter */\r
- TotalBlocks--;\r
- }\r
-\r
- /* If the endpoint is full, send its contents to the host */\r
- if (!(Endpoint_IsReadWriteAllowed()))\r
- Endpoint_ClearIN();\r
-\r
- /* Deselect all Dataflash chips */\r
- Dataflash_DeselectChip();\r
-}\r
-\r
-/** Writes blocks (OS blocks, not Dataflash pages) to the storage medium, the board Dataflash IC(s), from\r
- * the given RAM buffer. This routine reads in OS sized blocks from the buffer and writes them to the\r
- * Dataflash in Dataflash page sized blocks. This can be linked to FAT libraries to write files to the\r
- * Dataflash.\r
- *\r
- * \param[in] BlockAddress Data block starting address for the write sequence\r
- * \param[in] TotalBlocks Number of blocks of data to write\r
- * \param[in] BufferPtr Pointer to the data source RAM buffer\r
- */\r
-void DataflashManager_WriteBlocks_RAM(const uint32_t BlockAddress,\r
- uint16_t TotalBlocks,\r
- uint8_t* BufferPtr)\r
-{\r
- uint16_t CurrDFPage = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) / DATAFLASH_PAGE_SIZE);\r
- uint16_t CurrDFPageByte = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) % DATAFLASH_PAGE_SIZE);\r
- uint8_t CurrDFPageByteDiv16 = (CurrDFPageByte >> 4);\r
- bool UsingSecondBuffer = false;\r
-\r
- /* Select the correct starting Dataflash IC for the block requested */\r
- Dataflash_SelectChipFromPage(CurrDFPage);\r
-\r
-#if (DATAFLASH_PAGE_SIZE > VIRTUAL_MEMORY_BLOCK_SIZE)\r
- /* Copy selected dataflash's current page contents to the Dataflash buffer */\r
- Dataflash_SendByte(DF_CMD_MAINMEMTOBUFF1);\r
- Dataflash_SendAddressBytes(CurrDFPage, 0);\r
- Dataflash_WaitWhileBusy();\r
-#endif\r
-\r
- /* Send the Dataflash buffer write command */\r
- Dataflash_SendByte(DF_CMD_BUFF1WRITE);\r
- Dataflash_SendAddressBytes(0, CurrDFPageByte);\r
-\r
- while (TotalBlocks)\r
- {\r
- uint8_t BytesInBlockDiv16 = 0;\r
-\r
- /* Write an endpoint packet sized data block to the Dataflash */\r
- while (BytesInBlockDiv16 < (VIRTUAL_MEMORY_BLOCK_SIZE >> 4))\r
- {\r
- /* Check if end of Dataflash page reached */\r
- if (CurrDFPageByteDiv16 == (DATAFLASH_PAGE_SIZE >> 4))\r
- {\r
- /* Write the Dataflash buffer contents back to the Dataflash page */\r
- Dataflash_WaitWhileBusy();\r
- Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2TOMAINMEMWITHERASE : DF_CMD_BUFF1TOMAINMEMWITHERASE);\r
- Dataflash_SendAddressBytes(CurrDFPage, 0);\r
-\r
- /* Reset the Dataflash buffer counter, increment the page counter */\r
- CurrDFPageByteDiv16 = 0;\r
- CurrDFPage++;\r
-\r
- /* Once all the Dataflash ICs have had their first buffers filled, switch buffers to maintain throughput */\r
- if (Dataflash_GetSelectedChip() == DATAFLASH_CHIP_MASK(DATAFLASH_TOTALCHIPS))\r
- UsingSecondBuffer = !(UsingSecondBuffer);\r
-\r
- /* Select the next Dataflash chip based on the new Dataflash page index */\r
- Dataflash_SelectChipFromPage(CurrDFPage);\r
-\r
-#if (DATAFLASH_PAGE_SIZE > VIRTUAL_MEMORY_BLOCK_SIZE)\r
- /* If less than one Dataflash page remaining, copy over the existing page to preserve trailing data */\r
- if ((TotalBlocks * (VIRTUAL_MEMORY_BLOCK_SIZE >> 4)) < (DATAFLASH_PAGE_SIZE >> 4))\r
- {\r
- /* Copy selected dataflash's current page contents to the Dataflash buffer */\r
- Dataflash_WaitWhileBusy();\r
- Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_MAINMEMTOBUFF2 : DF_CMD_MAINMEMTOBUFF1);\r
- Dataflash_SendAddressBytes(CurrDFPage, 0);\r
- Dataflash_WaitWhileBusy();\r
- }\r
-#endif\r
-\r
- /* Send the Dataflash buffer write command */\r
- Dataflash_ToggleSelectedChipCS();\r
- Dataflash_SendByte(DF_CMD_BUFF1WRITE);\r
- Dataflash_SendAddressBytes(0, 0);\r
- }\r
-\r
- /* Write one 16-byte chunk of data to the Dataflash */\r
- for (uint8_t ByteNum = 0; ByteNum < 16; ByteNum++)\r
- Dataflash_SendByte(*(BufferPtr++));\r
-\r
- /* Increment the Dataflash page 16 byte block counter */\r
- CurrDFPageByteDiv16++;\r
-\r
- /* Increment the block 16 byte block counter */\r
- BytesInBlockDiv16++;\r
- }\r
-\r
- /* Decrement the blocks remaining counter and reset the sub block counter */\r
- TotalBlocks--;\r
- }\r
-\r
- /* Write the Dataflash buffer contents back to the Dataflash page */\r
- Dataflash_WaitWhileBusy();\r
- Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2TOMAINMEMWITHERASE : DF_CMD_BUFF1TOMAINMEMWITHERASE);\r
- Dataflash_SendAddressBytes(CurrDFPage, 0x00);\r
- Dataflash_WaitWhileBusy();\r
-\r
- /* Deselect all Dataflash chips */\r
- Dataflash_DeselectChip();\r
-}\r
-\r
-/** Reads blocks (OS blocks, not Dataflash pages) from the storage medium, the board Dataflash IC(s), into\r
- * the preallocated RAM buffer. This routine reads in Dataflash page sized blocks from the Dataflash\r
- * and writes them in OS sized blocks to the given buffer. This can be linked to FAT libraries to read\r
- * the files stored on the Dataflash.\r
- *\r
- * \param[in] BlockAddress Data block starting address for the read sequence\r
- * \param[in] TotalBlocks Number of blocks of data to read\r
- * \param[out] BufferPtr Pointer to the data destination RAM buffer\r
- */\r
-void DataflashManager_ReadBlocks_RAM(const uint32_t BlockAddress,\r
- uint16_t TotalBlocks,\r
- uint8_t* BufferPtr)\r
-{\r
- uint16_t CurrDFPage = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) / DATAFLASH_PAGE_SIZE);\r
- uint16_t CurrDFPageByte = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) % DATAFLASH_PAGE_SIZE);\r
- uint8_t CurrDFPageByteDiv16 = (CurrDFPageByte >> 4);\r
-\r
- /* Select the correct starting Dataflash IC for the block requested */\r
- Dataflash_SelectChipFromPage(CurrDFPage);\r
-\r
- /* Send the Dataflash main memory page read command */\r
- Dataflash_SendByte(DF_CMD_MAINMEMPAGEREAD);\r
- Dataflash_SendAddressBytes(CurrDFPage, CurrDFPageByte);\r
- Dataflash_SendByte(0x00);\r
- Dataflash_SendByte(0x00);\r
- Dataflash_SendByte(0x00);\r
- Dataflash_SendByte(0x00);\r
-\r
- while (TotalBlocks)\r
- {\r
- uint8_t BytesInBlockDiv16 = 0;\r
-\r
- /* Write an endpoint packet sized data block to the Dataflash */\r
- while (BytesInBlockDiv16 < (VIRTUAL_MEMORY_BLOCK_SIZE >> 4))\r
- {\r
- /* Check if end of Dataflash page reached */\r
- if (CurrDFPageByteDiv16 == (DATAFLASH_PAGE_SIZE >> 4))\r
- {\r
- /* Reset the Dataflash buffer counter, increment the page counter */\r
- CurrDFPageByteDiv16 = 0;\r
- CurrDFPage++;\r
-\r
- /* Select the next Dataflash chip based on the new Dataflash page index */\r
- Dataflash_SelectChipFromPage(CurrDFPage);\r
-\r
- /* Send the Dataflash main memory page read command */\r
- Dataflash_SendByte(DF_CMD_MAINMEMPAGEREAD);\r
- Dataflash_SendAddressBytes(CurrDFPage, 0);\r
- Dataflash_SendByte(0x00);\r
- Dataflash_SendByte(0x00);\r
- Dataflash_SendByte(0x00);\r
- Dataflash_SendByte(0x00);\r
- }\r
-\r
- /* Read one 16-byte chunk of data from the Dataflash */\r
- for (uint8_t ByteNum = 0; ByteNum < 16; ByteNum++)\r
- *(BufferPtr++) = Dataflash_ReceiveByte();\r
-\r
- /* Increment the Dataflash page 16 byte block counter */\r
- CurrDFPageByteDiv16++;\r
-\r
- /* Increment the block 16 byte block counter */\r
- BytesInBlockDiv16++;\r
- }\r
-\r
- /* Decrement the blocks remaining counter */\r
- TotalBlocks--;\r
- }\r
-\r
- /* Deselect all Dataflash chips */\r
- Dataflash_DeselectChip();\r
-}\r
-\r
-/** Disables the Dataflash memory write protection bits on the board Dataflash ICs, if enabled. */\r
-void DataflashManager_ResetDataflashProtections(void)\r
-{\r
- /* Select first Dataflash chip, send the read status register command */\r
- Dataflash_SelectChip(DATAFLASH_CHIP1);\r
- Dataflash_SendByte(DF_CMD_GETSTATUS);\r
-\r
- /* Check if sector protection is enabled */\r
- if (Dataflash_ReceiveByte() & DF_STATUS_SECTORPROTECTION_ON)\r
- {\r
- Dataflash_ToggleSelectedChipCS();\r
-\r
- /* Send the commands to disable sector protection */\r
- Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[0]);\r
- Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[1]);\r
- Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[2]);\r
- Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[3]);\r
- }\r
-\r
- /* Select second Dataflash chip (if present on selected board), send read status register command */\r
- #if (DATAFLASH_TOTALCHIPS == 2)\r
- Dataflash_SelectChip(DATAFLASH_CHIP2);\r
- Dataflash_SendByte(DF_CMD_GETSTATUS);\r
-\r
- /* Check if sector protection is enabled */\r
- if (Dataflash_ReceiveByte() & DF_STATUS_SECTORPROTECTION_ON)\r
- {\r
- Dataflash_ToggleSelectedChipCS();\r
-\r
- /* Send the commands to disable sector protection */\r
- Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[0]);\r
- Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[1]);\r
- Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[2]);\r
- Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[3]);\r
- }\r
- #endif\r
-\r
- /* Deselect current Dataflash chip */\r
- Dataflash_DeselectChip();\r
-}\r
-\r
-/** Performs a simple test on the attached Dataflash IC(s) to ensure that they are working.\r
- *\r
- * \return Boolean true if all media chips are working, false otherwise\r
- */\r
-bool DataflashManager_CheckDataflashOperation(void)\r
-{\r
- uint8_t ReturnByte;\r
-\r
- /* Test first Dataflash IC is present and responding to commands */\r
- Dataflash_SelectChip(DATAFLASH_CHIP1);\r
- Dataflash_SendByte(DF_CMD_READMANUFACTURERDEVICEINFO);\r
- ReturnByte = Dataflash_ReceiveByte();\r
- Dataflash_DeselectChip();\r
-\r
- /* If returned data is invalid, fail the command */\r
- if (ReturnByte != DF_MANUFACTURER_ATMEL)\r
- return false;\r
-\r
- #if (DATAFLASH_TOTALCHIPS == 2)\r
- /* Test second Dataflash IC is present and responding to commands */\r
- Dataflash_SelectChip(DATAFLASH_CHIP2);\r
- Dataflash_SendByte(DF_CMD_READMANUFACTURERDEVICEINFO);\r
- ReturnByte = Dataflash_ReceiveByte();\r
- Dataflash_DeselectChip();\r
-\r
- /* If returned data is invalid, fail the command */\r
- if (ReturnByte != DF_MANUFACTURER_ATMEL)\r
- return false;\r
- #endif\r
-\r
- return true;\r
-}\r
-\r
+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2012.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ *
+ * Functions to manage the physical Dataflash media, including reading and writing of
+ * blocks of data. These functions are called by the SCSI layer when data must be stored
+ * or retrieved to/from the physical storage media. If a different media is used (such
+ * as a SD card or EEPROM), functions similar to these will need to be generated.
+ */
+
+#define INCLUDE_FROM_DATAFLASHMANAGER_C
+#include "DataflashManager.h"
+
+/** Writes blocks (OS blocks, not Dataflash pages) to the storage medium, the board Dataflash IC(s), from
+ * the pre-selected data OUT endpoint. This routine reads in OS sized blocks from the endpoint and writes
+ * them to the Dataflash in Dataflash page sized blocks.
+ *
+ * \param[in] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state
+ * \param[in] BlockAddress Data block starting address for the write sequence
+ * \param[in] TotalBlocks Number of blocks of data to write
+ */
+void DataflashManager_WriteBlocks(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo,
+ const uint32_t BlockAddress,
+ uint16_t TotalBlocks)
+{
+ uint16_t CurrDFPage = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) / DATAFLASH_PAGE_SIZE);
+ uint16_t CurrDFPageByte = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) % DATAFLASH_PAGE_SIZE);
+ uint8_t CurrDFPageByteDiv16 = (CurrDFPageByte >> 4);
+ bool UsingSecondBuffer = false;
+
+ /* Select the correct starting Dataflash IC for the block requested */
+ Dataflash_SelectChipFromPage(CurrDFPage);
+
+#if (DATAFLASH_PAGE_SIZE > VIRTUAL_MEMORY_BLOCK_SIZE)
+ /* Copy selected dataflash's current page contents to the Dataflash buffer */
+ Dataflash_SendByte(DF_CMD_MAINMEMTOBUFF1);
+ Dataflash_SendAddressBytes(CurrDFPage, 0);
+ Dataflash_WaitWhileBusy();
+#endif
+
+ /* Send the Dataflash buffer write command */
+ Dataflash_SendByte(DF_CMD_BUFF1WRITE);
+ Dataflash_SendAddressBytes(0, CurrDFPageByte);
+
+ /* Wait until endpoint is ready before continuing */
+ if (Endpoint_WaitUntilReady())
+ return;
+
+ while (TotalBlocks)
+ {
+ uint8_t BytesInBlockDiv16 = 0;
+
+ /* Write an endpoint packet sized data block to the Dataflash */
+ while (BytesInBlockDiv16 < (VIRTUAL_MEMORY_BLOCK_SIZE >> 4))
+ {
+ /* Check if the endpoint is currently empty */
+ if (!(Endpoint_IsReadWriteAllowed()))
+ {
+ /* Clear the current endpoint bank */
+ Endpoint_ClearOUT();
+
+ /* Wait until the host has sent another packet */
+ if (Endpoint_WaitUntilReady())
+ return;
+ }
+
+ /* Check if end of Dataflash page reached */
+ if (CurrDFPageByteDiv16 == (DATAFLASH_PAGE_SIZE >> 4))
+ {
+ /* Write the Dataflash buffer contents back to the Dataflash page */
+ Dataflash_WaitWhileBusy();
+ Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2TOMAINMEMWITHERASE : DF_CMD_BUFF1TOMAINMEMWITHERASE);
+ Dataflash_SendAddressBytes(CurrDFPage, 0);
+
+ /* Reset the Dataflash buffer counter, increment the page counter */
+ CurrDFPageByteDiv16 = 0;
+ CurrDFPage++;
+
+ /* Once all the Dataflash ICs have had their first buffers filled, switch buffers to maintain throughput */
+ if (Dataflash_GetSelectedChip() == DATAFLASH_CHIP_MASK(DATAFLASH_TOTALCHIPS))
+ UsingSecondBuffer = !(UsingSecondBuffer);
+
+ /* Select the next Dataflash chip based on the new Dataflash page index */
+ Dataflash_SelectChipFromPage(CurrDFPage);
+
+#if (DATAFLASH_PAGE_SIZE > VIRTUAL_MEMORY_BLOCK_SIZE)
+ /* If less than one Dataflash page remaining, copy over the existing page to preserve trailing data */
+ if ((TotalBlocks * (VIRTUAL_MEMORY_BLOCK_SIZE >> 4)) < (DATAFLASH_PAGE_SIZE >> 4))
+ {
+ /* Copy selected dataflash's current page contents to the Dataflash buffer */
+ Dataflash_WaitWhileBusy();
+ Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_MAINMEMTOBUFF2 : DF_CMD_MAINMEMTOBUFF1);
+ Dataflash_SendAddressBytes(CurrDFPage, 0);
+ Dataflash_WaitWhileBusy();
+ }
+#endif
+
+ /* Send the Dataflash buffer write command */
+ Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2WRITE : DF_CMD_BUFF1WRITE);
+ Dataflash_SendAddressBytes(0, 0);
+ }
+
+ /* Write one 16-byte chunk of data to the Dataflash */
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+ Dataflash_SendByte(Endpoint_Read_8());
+
+ /* Increment the Dataflash page 16 byte block counter */
+ CurrDFPageByteDiv16++;
+
+ /* Increment the block 16 byte block counter */
+ BytesInBlockDiv16++;
+
+ /* Check if the current command is being aborted by the host */
+ if (MSInterfaceInfo->State.IsMassStoreReset)
+ return;
+ }
+
+ /* Decrement the blocks remaining counter */
+ TotalBlocks--;
+ }
+
+ /* Write the Dataflash buffer contents back to the Dataflash page */
+ Dataflash_WaitWhileBusy();
+ Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2TOMAINMEMWITHERASE : DF_CMD_BUFF1TOMAINMEMWITHERASE);
+ Dataflash_SendAddressBytes(CurrDFPage, 0x00);
+ Dataflash_WaitWhileBusy();
+
+ /* If the endpoint is empty, clear it ready for the next packet from the host */
+ if (!(Endpoint_IsReadWriteAllowed()))
+ Endpoint_ClearOUT();
+
+ /* Deselect all Dataflash chips */
+ Dataflash_DeselectChip();
+}
+
+/** Reads blocks (OS blocks, not Dataflash pages) from the storage medium, the board Dataflash IC(s), into
+ * the pre-selected data IN endpoint. This routine reads in Dataflash page sized blocks from the Dataflash
+ * and writes them in OS sized blocks to the endpoint.
+ *
+ * \param[in] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state
+ * \param[in] BlockAddress Data block starting address for the read sequence
+ * \param[in] TotalBlocks Number of blocks of data to read
+ */
+void DataflashManager_ReadBlocks(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo,
+ const uint32_t BlockAddress,
+ uint16_t TotalBlocks)
+{
+ uint16_t CurrDFPage = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) / DATAFLASH_PAGE_SIZE);
+ uint16_t CurrDFPageByte = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) % DATAFLASH_PAGE_SIZE);
+ uint8_t CurrDFPageByteDiv16 = (CurrDFPageByte >> 4);
+
+ /* Select the correct starting Dataflash IC for the block requested */
+ Dataflash_SelectChipFromPage(CurrDFPage);
+
+ /* Send the Dataflash main memory page read command */
+ Dataflash_SendByte(DF_CMD_MAINMEMPAGEREAD);
+ Dataflash_SendAddressBytes(CurrDFPage, CurrDFPageByte);
+ Dataflash_SendByte(0x00);
+ Dataflash_SendByte(0x00);
+ Dataflash_SendByte(0x00);
+ Dataflash_SendByte(0x00);
+
+ /* Wait until endpoint is ready before continuing */
+ if (Endpoint_WaitUntilReady())
+ return;
+
+ while (TotalBlocks)
+ {
+ uint8_t BytesInBlockDiv16 = 0;
+
+ /* Write an endpoint packet sized data block to the Dataflash */
+ while (BytesInBlockDiv16 < (VIRTUAL_MEMORY_BLOCK_SIZE >> 4))
+ {
+ /* Check if the endpoint is currently full */
+ if (!(Endpoint_IsReadWriteAllowed()))
+ {
+ /* Clear the endpoint bank to send its contents to the host */
+ Endpoint_ClearIN();
+
+ /* Wait until the endpoint is ready for more data */
+ if (Endpoint_WaitUntilReady())
+ return;
+ }
+
+ /* Check if end of Dataflash page reached */
+ if (CurrDFPageByteDiv16 == (DATAFLASH_PAGE_SIZE >> 4))
+ {
+ /* Reset the Dataflash buffer counter, increment the page counter */
+ CurrDFPageByteDiv16 = 0;
+ CurrDFPage++;
+
+ /* Select the next Dataflash chip based on the new Dataflash page index */
+ Dataflash_SelectChipFromPage(CurrDFPage);
+
+ /* Send the Dataflash main memory page read command */
+ Dataflash_SendByte(DF_CMD_MAINMEMPAGEREAD);
+ Dataflash_SendAddressBytes(CurrDFPage, 0);
+ Dataflash_SendByte(0x00);
+ Dataflash_SendByte(0x00);
+ Dataflash_SendByte(0x00);
+ Dataflash_SendByte(0x00);
+ }
+
+ /* Read one 16-byte chunk of data from the Dataflash */
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+ Endpoint_Write_8(Dataflash_ReceiveByte());
+
+ /* Increment the Dataflash page 16 byte block counter */
+ CurrDFPageByteDiv16++;
+
+ /* Increment the block 16 byte block counter */
+ BytesInBlockDiv16++;
+
+ /* Check if the current command is being aborted by the host */
+ if (MSInterfaceInfo->State.IsMassStoreReset)
+ return;
+ }
+
+ /* Decrement the blocks remaining counter */
+ TotalBlocks--;
+ }
+
+ /* If the endpoint is full, send its contents to the host */
+ if (!(Endpoint_IsReadWriteAllowed()))
+ Endpoint_ClearIN();
+
+ /* Deselect all Dataflash chips */
+ Dataflash_DeselectChip();
+}
+
+/** Writes blocks (OS blocks, not Dataflash pages) to the storage medium, the board Dataflash IC(s), from
+ * the given RAM buffer. This routine reads in OS sized blocks from the buffer and writes them to the
+ * Dataflash in Dataflash page sized blocks. This can be linked to FAT libraries to write files to the
+ * Dataflash.
+ *
+ * \param[in] BlockAddress Data block starting address for the write sequence
+ * \param[in] TotalBlocks Number of blocks of data to write
+ * \param[in] BufferPtr Pointer to the data source RAM buffer
+ */
+void DataflashManager_WriteBlocks_RAM(const uint32_t BlockAddress,
+ uint16_t TotalBlocks,
+ uint8_t* BufferPtr)
+{
+ uint16_t CurrDFPage = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) / DATAFLASH_PAGE_SIZE);
+ uint16_t CurrDFPageByte = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) % DATAFLASH_PAGE_SIZE);
+ uint8_t CurrDFPageByteDiv16 = (CurrDFPageByte >> 4);
+ bool UsingSecondBuffer = false;
+
+ /* Select the correct starting Dataflash IC for the block requested */
+ Dataflash_SelectChipFromPage(CurrDFPage);
+
+#if (DATAFLASH_PAGE_SIZE > VIRTUAL_MEMORY_BLOCK_SIZE)
+ /* Copy selected dataflash's current page contents to the Dataflash buffer */
+ Dataflash_SendByte(DF_CMD_MAINMEMTOBUFF1);
+ Dataflash_SendAddressBytes(CurrDFPage, 0);
+ Dataflash_WaitWhileBusy();
+#endif
+
+ /* Send the Dataflash buffer write command */
+ Dataflash_SendByte(DF_CMD_BUFF1WRITE);
+ Dataflash_SendAddressBytes(0, CurrDFPageByte);
+
+ while (TotalBlocks)
+ {
+ uint8_t BytesInBlockDiv16 = 0;
+
+ /* Write an endpoint packet sized data block to the Dataflash */
+ while (BytesInBlockDiv16 < (VIRTUAL_MEMORY_BLOCK_SIZE >> 4))
+ {
+ /* Check if end of Dataflash page reached */
+ if (CurrDFPageByteDiv16 == (DATAFLASH_PAGE_SIZE >> 4))
+ {
+ /* Write the Dataflash buffer contents back to the Dataflash page */
+ Dataflash_WaitWhileBusy();
+ Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2TOMAINMEMWITHERASE : DF_CMD_BUFF1TOMAINMEMWITHERASE);
+ Dataflash_SendAddressBytes(CurrDFPage, 0);
+
+ /* Reset the Dataflash buffer counter, increment the page counter */
+ CurrDFPageByteDiv16 = 0;
+ CurrDFPage++;
+
+ /* Once all the Dataflash ICs have had their first buffers filled, switch buffers to maintain throughput */
+ if (Dataflash_GetSelectedChip() == DATAFLASH_CHIP_MASK(DATAFLASH_TOTALCHIPS))
+ UsingSecondBuffer = !(UsingSecondBuffer);
+
+ /* Select the next Dataflash chip based on the new Dataflash page index */
+ Dataflash_SelectChipFromPage(CurrDFPage);
+
+#if (DATAFLASH_PAGE_SIZE > VIRTUAL_MEMORY_BLOCK_SIZE)
+ /* If less than one Dataflash page remaining, copy over the existing page to preserve trailing data */
+ if ((TotalBlocks * (VIRTUAL_MEMORY_BLOCK_SIZE >> 4)) < (DATAFLASH_PAGE_SIZE >> 4))
+ {
+ /* Copy selected dataflash's current page contents to the Dataflash buffer */
+ Dataflash_WaitWhileBusy();
+ Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_MAINMEMTOBUFF2 : DF_CMD_MAINMEMTOBUFF1);
+ Dataflash_SendAddressBytes(CurrDFPage, 0);
+ Dataflash_WaitWhileBusy();
+ }
+#endif
+
+ /* Send the Dataflash buffer write command */
+ Dataflash_ToggleSelectedChipCS();
+ Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2WRITE : DF_CMD_BUFF1WRITE);
+ Dataflash_SendAddressBytes(0, 0);
+ }
+
+ /* Write one 16-byte chunk of data to the Dataflash */
+ for (uint8_t ByteNum = 0; ByteNum < 16; ByteNum++)
+ Dataflash_SendByte(*(BufferPtr++));
+
+ /* Increment the Dataflash page 16 byte block counter */
+ CurrDFPageByteDiv16++;
+
+ /* Increment the block 16 byte block counter */
+ BytesInBlockDiv16++;
+ }
+
+ /* Decrement the blocks remaining counter */
+ TotalBlocks--;
+ }
+
+ /* Write the Dataflash buffer contents back to the Dataflash page */
+ Dataflash_WaitWhileBusy();
+ Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2TOMAINMEMWITHERASE : DF_CMD_BUFF1TOMAINMEMWITHERASE);
+ Dataflash_SendAddressBytes(CurrDFPage, 0x00);
+ Dataflash_WaitWhileBusy();
+
+ /* Deselect all Dataflash chips */
+ Dataflash_DeselectChip();
+}
+
+/** Reads blocks (OS blocks, not Dataflash pages) from the storage medium, the board Dataflash IC(s), into
+ * the preallocated RAM buffer. This routine reads in Dataflash page sized blocks from the Dataflash
+ * and writes them in OS sized blocks to the given buffer. This can be linked to FAT libraries to read
+ * the files stored on the Dataflash.
+ *
+ * \param[in] BlockAddress Data block starting address for the read sequence
+ * \param[in] TotalBlocks Number of blocks of data to read
+ * \param[out] BufferPtr Pointer to the data destination RAM buffer
+ */
+void DataflashManager_ReadBlocks_RAM(const uint32_t BlockAddress,
+ uint16_t TotalBlocks,
+ uint8_t* BufferPtr)
+{
+ uint16_t CurrDFPage = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) / DATAFLASH_PAGE_SIZE);
+ uint16_t CurrDFPageByte = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) % DATAFLASH_PAGE_SIZE);
+ uint8_t CurrDFPageByteDiv16 = (CurrDFPageByte >> 4);
+
+ /* Select the correct starting Dataflash IC for the block requested */
+ Dataflash_SelectChipFromPage(CurrDFPage);
+
+ /* Send the Dataflash main memory page read command */
+ Dataflash_SendByte(DF_CMD_MAINMEMPAGEREAD);
+ Dataflash_SendAddressBytes(CurrDFPage, CurrDFPageByte);
+ Dataflash_SendByte(0x00);
+ Dataflash_SendByte(0x00);
+ Dataflash_SendByte(0x00);
+ Dataflash_SendByte(0x00);
+
+ while (TotalBlocks)
+ {
+ uint8_t BytesInBlockDiv16 = 0;
+
+ /* Write an endpoint packet sized data block to the Dataflash */
+ while (BytesInBlockDiv16 < (VIRTUAL_MEMORY_BLOCK_SIZE >> 4))
+ {
+ /* Check if end of Dataflash page reached */
+ if (CurrDFPageByteDiv16 == (DATAFLASH_PAGE_SIZE >> 4))
+ {
+ /* Reset the Dataflash buffer counter, increment the page counter */
+ CurrDFPageByteDiv16 = 0;
+ CurrDFPage++;
+
+ /* Select the next Dataflash chip based on the new Dataflash page index */
+ Dataflash_SelectChipFromPage(CurrDFPage);
+
+ /* Send the Dataflash main memory page read command */
+ Dataflash_SendByte(DF_CMD_MAINMEMPAGEREAD);
+ Dataflash_SendAddressBytes(CurrDFPage, 0);
+ Dataflash_SendByte(0x00);
+ Dataflash_SendByte(0x00);
+ Dataflash_SendByte(0x00);
+ Dataflash_SendByte(0x00);
+ }
+
+ /* Read one 16-byte chunk of data from the Dataflash */
+ for (uint8_t ByteNum = 0; ByteNum < 16; ByteNum++)
+ *(BufferPtr++) = Dataflash_ReceiveByte();
+
+ /* Increment the Dataflash page 16 byte block counter */
+ CurrDFPageByteDiv16++;
+
+ /* Increment the block 16 byte block counter */
+ BytesInBlockDiv16++;
+ }
+
+ /* Decrement the blocks remaining counter */
+ TotalBlocks--;
+ }
+
+ /* Deselect all Dataflash chips */
+ Dataflash_DeselectChip();
+}
+
+/** Disables the Dataflash memory write protection bits on the board Dataflash ICs, if enabled. */
+void DataflashManager_ResetDataflashProtections(void)
+{
+ /* Select first Dataflash chip, send the read status register command */
+ Dataflash_SelectChip(DATAFLASH_CHIP1);
+ Dataflash_SendByte(DF_CMD_GETSTATUS);
+
+ /* Check if sector protection is enabled */
+ if (Dataflash_ReceiveByte() & DF_STATUS_SECTORPROTECTION_ON)
+ {
+ Dataflash_ToggleSelectedChipCS();
+
+ /* Send the commands to disable sector protection */
+ Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[0]);
+ Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[1]);
+ Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[2]);
+ Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[3]);
+ }
+
+ /* Select second Dataflash chip (if present on selected board), send read status register command */
+ #if (DATAFLASH_TOTALCHIPS == 2)
+ Dataflash_SelectChip(DATAFLASH_CHIP2);
+ Dataflash_SendByte(DF_CMD_GETSTATUS);
+
+ /* Check if sector protection is enabled */
+ if (Dataflash_ReceiveByte() & DF_STATUS_SECTORPROTECTION_ON)
+ {
+ Dataflash_ToggleSelectedChipCS();
+
+ /* Send the commands to disable sector protection */
+ Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[0]);
+ Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[1]);
+ Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[2]);
+ Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[3]);
+ }
+ #endif
+
+ /* Deselect current Dataflash chip */
+ Dataflash_DeselectChip();
+}
+
+/** Performs a simple test on the attached Dataflash IC(s) to ensure that they are working.
+ *
+ * \return Boolean true if all media chips are working, false otherwise
+ */
+bool DataflashManager_CheckDataflashOperation(void)
+{
+ uint8_t ReturnByte;
+
+ /* Test first Dataflash IC is present and responding to commands */
+ Dataflash_SelectChip(DATAFLASH_CHIP1);
+ Dataflash_SendByte(DF_CMD_READMANUFACTURERDEVICEINFO);
+ ReturnByte = Dataflash_ReceiveByte();
+ Dataflash_DeselectChip();
+
+ /* If returned data is invalid, fail the command */
+ if (ReturnByte != DF_MANUFACTURER_ATMEL)
+ return false;
+
+ #if (DATAFLASH_TOTALCHIPS == 2)
+ /* Test second Dataflash IC is present and responding to commands */
+ Dataflash_SelectChip(DATAFLASH_CHIP2);
+ Dataflash_SendByte(DF_CMD_READMANUFACTURERDEVICEINFO);
+ ReturnByte = Dataflash_ReceiveByte();
+ Dataflash_DeselectChip();
+
+ /* If returned data is invalid, fail the command */
+ if (ReturnByte != DF_MANUFACTURER_ATMEL)
+ return false;
+ #endif
+
+ return true;
+}
+
projects / pub / USBasp.git / blobdiff