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path: root/lib/lufa/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c
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m---------lib/lufa0
-rw-r--r--lib/lufa/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c534
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diff --git a/lib/lufa b/lib/lufa
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+Subproject ce10f7642b0459e409839b23cc91498945119b4
diff --git a/lib/lufa/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c b/lib/lufa/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c
deleted file mode 100644
index c0fd16ccc4..0000000000
--- a/lib/lufa/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c
+++ /dev/null
@@ -1,534 +0,0 @@
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2017.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2017 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 disclaims 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;
-
- /* Read an endpoint packet sized data block from 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;
-
- /* Read an endpoint packet sized data block from 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 \c true if all media chips are working, \c 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;
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 20:05:17 +0000