/** * Copyright (c) 2011-2022 Bill Greiman * This file is part of the SdFat library for SD memory cards. * * MIT License * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ #include "SdSpiDriver.h" #if defined(SD_USE_CUSTOM_SPI) && defined(ARDUINO_ARCH_APOLLO3) //------------------------------------------------------------------------------ void SdSpiArduinoDriver::activate() { m_spi->beginTransaction(m_spiSettings); } //------------------------------------------------------------------------------ void SdSpiArduinoDriver::begin(SdSpiConfig spiConfig) { if (spiConfig.spiPort) { m_spi = spiConfig.spiPort; } else { m_spi = &SPI; } m_spi->begin(); } //------------------------------------------------------------------------------ void SdSpiArduinoDriver::deactivate() { m_spi->endTransaction(); } //------------------------------------------------------------------------------ void SdSpiArduinoDriver::end() { m_spi->end(); } //------------------------------------------------------------------------------ uint8_t SdSpiArduinoDriver::receive() { return m_spi->transfer(0XFF); } //------------------------------------------------------------------------------ uint8_t SdSpiArduinoDriver::receive(uint8_t* buf, size_t count) { memset(buf, 0XFF, count); m_spi->transfer(buf, count); return 0; } //------------------------------------------------------------------------------ void SdSpiArduinoDriver::send(uint8_t data) { m_spi->transfer(data); } //------------------------------------------------------------------------------ void SdSpiArduinoDriver::send(const uint8_t* buf, size_t count) { // If not a multiple of four. Command with CRC used six byte send. while (count % 4) { send(*buf++); count--; } // Convert byte array to 4 byte array. uint32_t myArray[count / 4]; // NOLINT for (int x = 0; x < count / 4; x++) { myArray[x] = ((uint32_t)buf[(x * 4) + 3] << (8 * 3)) | ((uint32_t)buf[(x * 4) + 2] << (8 * 2)) | ((uint32_t)buf[(x * 4) + 1] << (8 * 1)) | ((uint32_t)buf[(x * 4) + 0] << (8 * 0)); } m_spi->transfer(reinterpret_cast(myArray), count); } #endif // defined(SD_USE_CUSTOM_SPI) && defined(ARDUINO_ARCH_APOLLO3)