161 lines
5.1 KiB
C
161 lines
5.1 KiB
C
/*
|
|
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
|
|
|
|
This file is part of ChibiOS/RT.
|
|
|
|
ChibiOS/RT is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
ChibiOS/RT is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/**
|
|
* @file templates/spi_lld.c
|
|
* @brief SPI Driver subsystem low level driver source template.
|
|
* @addtogroup SPI_LLD
|
|
* @{
|
|
*/
|
|
|
|
#include "ch.h"
|
|
#include "hal.h"
|
|
|
|
#if CH_HAL_USE_SPI || defined(__DOXYGEN__)
|
|
|
|
/*===========================================================================*/
|
|
/* Low Level Driver exported variables. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Low Level Driver local variables. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Low Level Driver local functions. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Low Level Driver interrupt handlers. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Low Level Driver exported functions. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Low level SPI driver initialization.
|
|
*/
|
|
void spi_lld_init(void) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Configures and activates the SPI peripheral.
|
|
*
|
|
* @param[in] spip pointer to the @p SPIDriver object
|
|
*/
|
|
void spi_lld_start(SPIDriver *spip) {
|
|
|
|
if (spip->spd_state == SPI_STOP) {
|
|
/* Clock activation.*/
|
|
}
|
|
/* Configuration.*/
|
|
}
|
|
|
|
/**
|
|
* @brief Deactivates the SPI peripheral.
|
|
*
|
|
* @param[in] spip pointer to the @p SPIDriver object
|
|
*/
|
|
void spi_lld_stop(SPIDriver *spip) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Asserts the slave select signal and prepares for transfers.
|
|
*
|
|
* @param[in] spip pointer to the @p SPIDriver object
|
|
*/
|
|
void spi_lld_select(SPIDriver *spip) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Deasserts the slave select signal.
|
|
* @details The previously selected peripheral is unselected.
|
|
*
|
|
* @param[in] spip pointer to the @p SPIDriver object
|
|
*/
|
|
void spi_lld_unselect(SPIDriver *spip) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Ignores data on the SPI bus.
|
|
* @details This function transmits a series of idle words on the SPI bus and
|
|
* ignores the received data. This function can be invoked even
|
|
* when a slave select signal has not been yet asserted.
|
|
*
|
|
* @param[in] spip pointer to the @p SPIDriver object
|
|
* @param[in] n number of words to be ignored
|
|
*/
|
|
void spi_lld_ignore(SPIDriver *spip, size_t n) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Exchanges data on the SPI bus.
|
|
* @details This function performs a simultaneous transmit/receive operation.
|
|
*
|
|
* @param[in] spip pointer to the @p SPIDriver object
|
|
* @param[in] n number of words to be exchanged
|
|
* @param[in] txbuf the pointer to the transmit buffer
|
|
* @param[out] rxbuf the pointer to the receive buffer
|
|
*
|
|
* @note The buffers are organized as uint8_t arrays for data sizes below or
|
|
* equal to 8 bits else it is organized as uint16_t arrays.
|
|
*/
|
|
void spi_lld_exchange(SPIDriver *spip, size_t n,
|
|
const void *txbuf, void *rxbuf) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Sends data ever the SPI bus.
|
|
*
|
|
* @param[in] spip pointer to the @p SPIDriver object
|
|
* @param[in] n number of words to send
|
|
* @param[in] txbuf the pointer to the transmit buffer
|
|
*
|
|
* @note The buffers are organized as uint8_t arrays for data sizes below or
|
|
* equal to 8 bits else it is organized as uint16_t arrays.
|
|
*/
|
|
void spi_lld_send(SPIDriver *spip, size_t n, const void *txbuf) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Receives data from the SPI bus.
|
|
*
|
|
* @param[in] spip pointer to the @p SPIDriver object
|
|
* @param[in] n number of words to receive
|
|
* @param[out] rxbuf the pointer to the receive buffer
|
|
*
|
|
* @note The buffers are organized as uint8_t arrays for data sizes below or
|
|
* equal to 8 bits else it is organized as uint16_t arrays.
|
|
*/
|
|
void spi_lld_receive(SPIDriver *spip, size_t n, void *rxbuf) {
|
|
|
|
}
|
|
|
|
#endif /* CH_HAL_USE_SPI */
|
|
|
|
/** @} */
|