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Diffstat (limited to 'lib/lufa/Demos/Device/ClassDriver/MassStorageKeyboard/Lib/DataflashManager.c')
| -rw-r--r-- | lib/lufa/Demos/Device/ClassDriver/MassStorageKeyboard/Lib/DataflashManager.c | 534 |
1 files changed, 0 insertions, 534 deletions
diff --git a/lib/lufa/Demos/Device/ClassDriver/MassStorageKeyboard/Lib/DataflashManager.c b/lib/lufa/Demos/Device/ClassDriver/MassStorageKeyboard/Lib/DataflashManager.c deleted file mode 100644 index c0fd16ccc4..0000000000 --- a/lib/lufa/Demos/Device/ClassDriver/MassStorageKeyboard/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; -} - |