160 lines
4.4 KiB
C
160 lines
4.4 KiB
C
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/*
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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/can_lld.c
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* @brief CAN Driver subsystem low level driver source template
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* @addtogroup CAN_LLD
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* @{
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*/
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#include "ch.h"
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#include "hal.h"
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#if CH_HAL_USE_CAN
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/*===========================================================================*/
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/* Low Level Driver exported variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Low Level Driver local variables. */
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/*===========================================================================*/
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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 CAN driver initialization.
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*/
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void can_lld_init(void) {
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}
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/**
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* @brief Configures and activates the CAN peripheral.
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*
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* @param[in] canp pointer to the @p CANDriver object
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*/
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void can_lld_start(CANDriver *canp) {
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if (canp->can_state == CAN_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 CAN peripheral.
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*
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* @param[in] canp pointer to the @p CANDriver object
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*/
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void can_lld_stop(CANDriver *canp) {
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}
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/**
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* @brief Determines whether a frame can be transmitted.
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*
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* @param[in] canp pointer to the @p CANDriver object
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*
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* @return The queue space availability.
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* @retval FALSE no space in the transmit queue.
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* @retval TRUE transmit slot available.
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*/
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bool_t can_lld_can_transmit(CANDriver *canp) {
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return FALSE;
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}
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/**
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* @brief Inserts a frame into the transmit queue.
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*
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* @param[in] canp pointer to the @p CANDriver object
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* @param[in] cfp pointer to the CAN frame to be transmitted
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*
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* @return The operation status.
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* @retval RDY_OK frame transmitted.
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*/
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msg_t can_lld_transmit(CANDriver *canp, const CANFrame *cfp) {
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return RDY_OK;
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}
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/**
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* @brief Determines whether a frame has been received.
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*
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* @param[in] canp pointer to the @p CANDriver object
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*
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* @return The queue space availability.
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* @retval FALSE no space in the transmit queue.
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* @retval TRUE transmit slot available.
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*/
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bool_t can_lld_can_receive(CANDriver *canp) {
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return FALSE;
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}
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/**
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* @brief Receives a frame from the input queue.
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*
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* @param[in] canp pointer to the @p CANDriver object
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* @param[out] cfp pointer to the buffer where the CAN frame is copied
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*
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* @return The operation status.
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* @retval RDY_OK frame received.
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*/
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msg_t can_lld_receive(CANDriver *canp, CANFrame *cfp) {
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return RDY_OK;
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}
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#if CAN_USE_SLEEP_MODE || defined(__DOXYGEN__)
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/**
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* @brief Enters the sleep mode.
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*
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* @param[in] canp pointer to the @p CANDriver object
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*/
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void can_lld_sleep(CANDriver *canp) {
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}
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/**
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* @brief Enforces leaving the sleep mode.
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*
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* @param[in] canp pointer to the @p CANDriver object
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*/
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void can_lld_wakeup(CANDriver *canp) {
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}
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#endif /* CAN_USE_SLEEP_MODE */
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#endif /* CH_HAL_USE_CAN */
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/** @} */
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