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297 lines
10 KiB
C++
297 lines
10 KiB
C++
/* Arduino SdCard Library
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* Copyright (C) 2016 by William Greiman
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*
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* This file is part of the Arduino SdSpiCard Library
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*
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* This Library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This Library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the Arduino SdSpiCard Library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#ifndef SdioCard_h
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#define SdioCard_h
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#include "SysCall.h"
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#include "BlockDriver.h"
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/**
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* \class SdioCard
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* \brief Raw SDIO access to SD and SDHC flash memory cards.
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*/
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class SdioCard : public BaseBlockDriver {
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public:
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/** Initialize the SD card.
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* \return true for success else false.
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*/
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bool begin();
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/**
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* Determine the size of an SD flash memory card.
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*
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* \return The number of 512 byte data blocks in the card
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* or zero if an error occurs.
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*/
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uint32_t cardSize();
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/** Erase a range of blocks.
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*
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* \param[in] firstBlock The address of the first block in the range.
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* \param[in] lastBlock The address of the last block in the range.
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*
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* \note This function requests the SD card to do a flash erase for a
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* range of blocks. The data on the card after an erase operation is
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* either 0 or 1, depends on the card vendor. The card must support
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* single block erase.
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*
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool erase(uint32_t firstBlock, uint32_t lastBlock);
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/**
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* \return code for the last error. See SdInfo.h for a list of error codes.
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*/
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uint8_t errorCode();
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/** \return error data for last error. */
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uint32_t errorData();
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/** \return error line for last error. Tmp function for debug. */
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uint32_t errorLine();
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/**
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* Check for busy with CMD13.
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*
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* \return true if busy else false.
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*/
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bool isBusy();
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/** \return the SD clock frequency in kHz. */
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uint32_t kHzSdClk();
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/**
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* Read a 512 byte block from an SD card.
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*
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* \param[in] lba Logical block to be read.
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* \param[out] dst Pointer to the location that will receive the data.
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool readBlock(uint32_t lba, uint8_t* dst);
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/**
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* Read multiple 512 byte blocks from an SD card.
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*
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* \param[in] lba Logical block to be read.
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* \param[in] nb Number of blocks to be read.
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* \param[out] dst Pointer to the location that will receive the data.
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool readBlocks(uint32_t lba, uint8_t* dst, size_t nb);
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/**
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* Read a card's CID register. The CID contains card identification
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* information such as Manufacturer ID, Product name, Product serial
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* number and Manufacturing date.
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*
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* \param[out] cid pointer to area for returned data.
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*
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* \return true for success or false for failure.
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*/
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bool readCID(void* cid);
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/**
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* Read a card's CSD register. The CSD contains Card-Specific Data that
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* provides information regarding access to the card's contents.
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*
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* \param[out] csd pointer to area for returned data.
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*
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* \return true for success or false for failure.
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*/
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bool readCSD(void* csd);
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/** Read one data block in a multiple block read sequence
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*
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* \param[out] dst Pointer to the location for the data to be read.
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*
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool readData(uint8_t *dst);
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/** Read OCR register.
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*
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* \param[out] ocr Value of OCR register.
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* \return true for success else false.
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*/
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bool readOCR(uint32_t* ocr);
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/** Start a read multiple blocks sequence.
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*
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* \param[in] lba Address of first block in sequence.
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*
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* \note This function is used with readData() and readStop() for optimized
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* multiple block reads. SPI chipSelect must be low for the entire sequence.
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*
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool readStart(uint32_t lba);
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/** Start a read multiple blocks sequence.
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*
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* \param[in] lba Address of first block in sequence.
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* \param[in] count Maximum block count.
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* \note This function is used with readData() and readStop() for optimized
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* multiple block reads. SPI chipSelect must be low for the entire sequence.
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*
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool readStart(uint32_t lba, uint32_t count);
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/** End a read multiple blocks sequence.
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*
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool readStop();
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/** \return success if sync successful. Not for user apps. */
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bool syncBlocks();
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/** Return the card type: SD V1, SD V2 or SDHC
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* \return 0 - SD V1, 1 - SD V2, or 3 - SDHC.
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*/
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uint8_t type();
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/**
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* Writes a 512 byte block to an SD card.
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*
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* \param[in] lba Logical block to be written.
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* \param[in] src Pointer to the location of the data to be written.
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool writeBlock(uint32_t lba, const uint8_t* src);
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/**
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* Write multiple 512 byte blocks to an SD card.
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*
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* \param[in] lba Logical block to be written.
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* \param[in] nb Number of blocks to be written.
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* \param[in] src Pointer to the location of the data to be written.
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool writeBlocks(uint32_t lba, const uint8_t* src, size_t nb);
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/** Write one data block in a multiple block write sequence.
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* \param[in] src Pointer to the location of the data to be written.
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool writeData(const uint8_t* src);
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/** Start a write multiple blocks sequence.
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*
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* \param[in] lba Address of first block in sequence.
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*
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* \note This function is used with writeData() and writeStop()
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* for optimized multiple block writes.
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*
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool writeStart(uint32_t lba);
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/** Start a write multiple blocks sequence.
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*
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* \param[in] lba Address of first block in sequence.
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* \param[in] count Maximum block count.
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* \note This function is used with writeData() and writeStop()
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* for optimized multiple block writes.
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*
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool writeStart(uint32_t lba, uint32_t count);
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/** End a write multiple blocks sequence.
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*
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool writeStop();
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};
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//==============================================================================
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/**
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* \class SdioCardEX
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* \brief Extended SD I/O block driver.
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*/
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class SdioCardEX : public SdioCard {
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public:
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/** Initialize the SD card
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*
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool begin() {
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m_curState = IDLE_STATE;
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return SdioCard::begin();
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}
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/** Erase a range of blocks.
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*
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* \param[in] firstBlock The address of the first block in the range.
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* \param[in] lastBlock The address of the last block in the range.
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*
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* \note This function requests the SD card to do a flash erase for a
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* range of blocks. The data on the card after an erase operation is
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* either 0 or 1, depends on the card vendor. The card must support
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* single block erase.
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*
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool erase(uint32_t firstBlock, uint32_t lastBlock) {
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return syncBlocks() && SdioCard::erase(firstBlock, lastBlock);
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}
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/**
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* Read a 512 byte block from an SD card.
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*
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* \param[in] block Logical block to be read.
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* \param[out] dst Pointer to the location that will receive the data.
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool readBlock(uint32_t block, uint8_t* dst);
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/** End multi-block transfer and go to idle state.
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool syncBlocks();
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/**
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* Writes a 512 byte block to an SD card.
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*
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* \param[in] block Logical block to be written.
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* \param[in] src Pointer to the location of the data to be written.
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool writeBlock(uint32_t block, const uint8_t* src);
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/**
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* Read multiple 512 byte blocks from an SD card.
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*
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* \param[in] block Logical block to be read.
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* \param[in] nb Number of blocks to be read.
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* \param[out] dst Pointer to the location that will receive the data.
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool readBlocks(uint32_t block, uint8_t* dst, size_t nb);
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/**
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* Write multiple 512 byte blocks to an SD card.
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*
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* \param[in] block Logical block to be written.
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* \param[in] nb Number of blocks to be written.
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* \param[in] src Pointer to the location of the data to be written.
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* \return The value true is returned for success and
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* the value false is returned for failure.
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*/
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bool writeBlocks(uint32_t block, const uint8_t* src, size_t nb);
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private:
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static const uint32_t IDLE_STATE = 0;
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static const uint32_t READ_STATE = 1;
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static const uint32_t WRITE_STATE = 2;
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uint32_t m_curLba;
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uint32_t m_limitLba;
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uint8_t m_curState;
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};
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#endif // SdioCard_h
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