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SdSpiSTM32.cpp
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SdSpiSTM32.cpp
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/**
* 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<uint8*>(buf), nullptr, count);
#else // USE_STM32_DMA
m_spi->write(const_cast<uint8*>(buf), count);
#endif // USE_STM32_DMA
}
#endif // defined(SD_USE_CUSTOM_SPI) && defined(__STM32F1__)