144 lines
4.3 KiB
C
144 lines
4.3 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT 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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ChibiOS/RT 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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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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/**
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* @file templates/spi_lld.c
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* @brief SPI Driver subsystem low level driver source template
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* @addtogroup SPI_LLD
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* @{
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*/
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#include <ch.h>
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#include <spi.h>
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/*===========================================================================*/
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/* Low Level Driver local functions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Low Level Driver interrupt handlers. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Low Level Driver exported functions. */
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/*===========================================================================*/
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/**
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* @brief Low level SPI driver initialization.
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*/
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void spi_lld_init(void) {
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}
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/**
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* @brief Configures and activates the SPI peripheral.
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*
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* @param[in] spip pointer to the @p SPIDriver object
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*/
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void spi_lld_start(SPIDriver *spip) {
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if (spip->spd_state == SPI_STOP) {
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/* Clock activation.*/
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}
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/* Configuration.*/
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}
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/**
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* @brief Deactivates the SPI peripheral.
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*
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* @param[in] spip pointer to the @p SPIDriver object
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*/
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void spi_lld_stop(SPIDriver *spip) {
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}
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/**
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* @brief Asserts the slave select signal and prepares for transfers.
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*
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* @param[in] spip pointer to the @p SPIDriver object
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*/
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void spi_lld_select(SPIDriver *spip) {
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}
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/**
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* @brief Deasserts the slave select signal.
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* @details The previously selected peripheral is unselected.
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*
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* @param[in] spip pointer to the @p SPIDriver object
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*/
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void spi_lld_unselect(SPIDriver *spip) {
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}
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/**
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* @brief Exchanges data on the SPI bus.
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* @details This function performs a simultaneous transmit/receive operation.
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*
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* @param[in] spip pointer to the @p SPIDriver object
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* @param n number of words to exchange
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* @param rxbuf the pointer to the receive buffer
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* @param txbuf the pointer to the transmit buffer
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* @return The operation status is returned.
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* @retval RDY_OK operation complete.
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* @retval RDY_RESET hardware failure.
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*
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* @note The buffers are organized as uint8_t arrays for data sizes below or
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* equal to 8 bits else it is organized as uint16_t arrays.
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*/
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msg_t spi_lld_exchange(SPIDriver *spip, size_t n, void *rxbuf, void *txbuf) {
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}
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/**
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* @brief Sends data ever the SPI bus.
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*
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* @param[in] spip pointer to the @p SPIDriver object
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* @param n number of words to send
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* @param txbuf the pointer to the transmit buffer
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* @return The operation status is returned.
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* @retval RDY_OK operation complete.
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* @retval RDY_RESET hardware failure.
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*
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* @note The buffers are organized as uint8_t arrays for data sizes below or
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* equal to 8 bits else it is organized as uint16_t arrays.
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*/
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msg_t spi_lld_send(SPIDriver *spip, size_t n, void *txbuf) {
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}
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/**
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* @brief Receives data from the SPI bus.
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*
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* @param[in] spip pointer to the @p SPIDriver object
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* @param n number of words to receive
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* @param rxbuf the pointer to the receive buffer
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* @return The operation status is returned.
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* @retval RDY_OK operation complete.
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* @retval RDY_RESET hardware failure.
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*
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* @note The buffers are organized as uint8_t arrays for data sizes below or
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* equal to 8 bits else it is organized as uint16_t arrays.
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*/
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msg_t spi_lld_receive(SPIDriver *spip, size_t n, void *rxbuf) {
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}
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/** @} */
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