/* Arduino SdFat Library * Copyright (C) 2016 by William Greiman * * This file is part of the Arduino SdFat Library * * This Library is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This Library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with the Arduino SdFat Library. If not, see * . */ #include "SdSpiCard.h" bool SdSpiCardEX::readBlock(uint32_t block, uint8_t* dst) { if (m_curState != READ_STATE || block != m_curBlock) { if (!syncBlocks()) { return false; } if (!SdSpiCard::readStart(block)) { return false; } m_curBlock = block; m_curState = READ_STATE; } if (!SdSpiCard::readData(dst)) { return false; } m_curBlock++; return true; } //----------------------------------------------------------------------------- bool SdSpiCardEX::readBlocks(uint32_t block, uint8_t* dst, size_t nb) { for (size_t i = 0; i < nb; i++) { if (!readBlock(block + i, dst + i*512UL)) { return false; } } return true; } //----------------------------------------------------------------------------- bool SdSpiCardEX::syncBlocks() { if (m_curState == READ_STATE) { m_curState = IDLE_STATE; if (!SdSpiCard::readStop()) { return false; } } else if (m_curState == WRITE_STATE) { m_curState = IDLE_STATE; if (!SdSpiCard::writeStop()) { return false; } } return true; } //----------------------------------------------------------------------------- bool SdSpiCardEX::writeBlock(uint32_t block, const uint8_t* src) { if (m_curState != WRITE_STATE || m_curBlock != block) { if (!syncBlocks()) { return false; } if (!SdSpiCard::writeStart(block)) { return false; } m_curBlock = block; m_curState = WRITE_STATE; } if (!SdSpiCard::writeData(src)) { return false; } m_curBlock++; return true; } //----------------------------------------------------------------------------- bool SdSpiCardEX::writeBlocks(uint32_t block, const uint8_t* src, size_t nb) { for (size_t i = 0; i < nb; i++) { if (!writeBlock(block + i, src + i*512UL)) { return false; } } return true; }