+++ /dev/null
-/*\r
- LUFA Library\r
- Copyright (C) Dean Camera, 2009.\r
- \r
- dean [at] fourwalledcubicle [dot] com\r
- www.fourwalledcubicle.com\r
-*/\r
-\r
-/*\r
- Copyright 2009 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
-#if defined(USB_CAN_BE_DEVICE)\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* MSInterfaceInfo, const uint32_t BlockAddress, 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_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\r
- Dataflash_SendByte(Endpoint_Read_Byte());\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* MSInterfaceInfo, const uint32_t BlockAddress, 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_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(Dataflash_ReceiveByte());\r
- Endpoint_Write_Byte(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 a 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, uint16_t TotalBlocks, 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 a 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, uint16_t TotalBlocks, 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
-#endif\r
projects / pub / lufa.git / blobdiff