/** * 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. */ // Driver for: https://github.com/rogerclarkmelbourne/Arduino_STM32 #include "SdSpiDriver.h" #if defined(SD_USE_CUSTOM_SPI) && (defined(__STM32F1__) || defined(__STM32F4__)) #if defined(__STM32F1__) #define USE_STM32_DMA 1 #elif defined(__STM32F4__) #define USE_STM32_DMA 1 #else // defined(__STM32F1__) #error Unknown STM32 type #endif // defined(__STM32F1__) //------------------------------------------------------------------------------ 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) { #if USE_STM32_DMA return m_spi->dmaTransfer(nullptr, buf, count); #else // USE_STM32_DMA m_spi->read(buf, count); return 0; #endif // USE_STM32_DMA } //------------------------------------------------------------------------------ void SdSpiArduinoDriver::send(uint8_t data) { m_spi->transfer(data); } //------------------------------------------------------------------------------ void SdSpiArduinoDriver::send(const uint8_t* buf, size_t count) { #if USE_STM32_DMA m_spi->dmaTransfer(const_cast(buf), nullptr, count); #else // USE_STM32_DMA m_spi->write(const_cast(buf), count); #endif // USE_STM32_DMA } #endif // defined(SD_USE_CUSTOM_SPI) && defined(__STM32F1__)