64 lines
3.0 KiB
C
64 lines
3.0 KiB
C
/***************************************************************************
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* Copyright (C) 2021 - 2024 by Federico Amedeo Izzo IU2NUO, *
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* Niccolò Izzo IU2KIN *
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* Frederik Saraci IU2NRO *
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* Silvano Seva IU2KWO *
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* *
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* This program 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 program 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 this program; if not, see <http://www.gnu.org/licenses/> *
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***************************************************************************/
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#ifndef SPI_STM32_H
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#define SPI_STM32_H
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#include <peripherals/spi.h>
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/**
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* Instantiate an STM32 I2C master device.
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*
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* @param name: device name.
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* @param peripheral: underlying MCU peripheral.
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* @param mutx: pointer to mutex, or NULL.
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*/
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#define SPI_STM32_DEVICE_DEFINE(name, peripheral, mutx) \
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extern int spiStm32_transfer(const struct spiDevice *dev, const void *txBuf, \
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const size_t txSize, void *rxBuf, \
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const size_t rxSize); \
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const struct spiDevice name = \
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{ \
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.transfer = &spiStm32_transfer, \
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.priv = peripheral, \
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.mutex = mutx \
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};
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/**
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* Initialise an SPI peripheral and driver.
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* Is left to application code to change the operating mode and alternate function
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* mapping of the corresponding gpio lines.
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*
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* @param dev: SPI device descriptor.
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* @param speed: SPI clock speed.
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* @param flags: SPI configuration flags.
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* @return zero on success, a negative error code otherwise.
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*/
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int spi_init(const struct spiDevice *dev, const uint32_t speed, const uint8_t flags);
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/**
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* Shut down an SPI peripheral and driver.
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*
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* @param dev: SPI device descriptor.
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*/
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void spi_terminate(const struct spiDevice *dev);
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#endif /* SPI_STM32_H */
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