mirror of https://github.com/rusefi/ChibiOS.git
248 lines
6.3 KiB
C
248 lines
6.3 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012,2013 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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*
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* @addtogroup CAN
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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 HAL_USE_CAN || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver local definitions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported variables. */
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/*===========================================================================*/
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/**
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* @brief CAN1 driver identifier.
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*/
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#if PLATFORM_CAN_USE_CAN1 || defined(__DOXYGEN__)
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CANDriver CAND1;
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#endif
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/*===========================================================================*/
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/* Driver local variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver interrupt handlers. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* 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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* @notapi
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*/
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void can_lld_init(void) {
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#if PLATFORM_CAN_USE_CAN1
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/* Driver initialization.*/
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canObjectInit(&CAND1);
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#endif /* PLATFORM_CAN_USE_CAN1 */
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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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* @notapi
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*/
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void can_lld_start(CANDriver *canp) {
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if (canp->state == CAN_STOP) {
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/* Enables the peripheral.*/
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#if PLATFORM_CAN_USE_CAN1
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if (&CAND1 == canp) {
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}
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#endif /* PLATFORM_CAN_USE_CAN1 */
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}
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/* Configures the peripheral.*/
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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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* @notapi
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*/
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void can_lld_stop(CANDriver *canp) {
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if (canp->state == CAN_READY) {
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/* Resets the peripheral.*/
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/* Disables the peripheral.*/
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#if PLATFORM_CAN_USE_CAN1
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if (&CAND1 == canp) {
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}
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#endif /* PLATFORM_CAN_USE_CAN1 */
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}
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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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* @param[in] mailbox mailbox number, @p CAN_ANY_MAILBOX for any mailbox
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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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* @notapi
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*/
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bool_t can_lld_is_tx_empty(CANDriver *canp, canmbx_t mailbox) {
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(void)canp;
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switch (mailbox) {
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case CAN_ANY_MAILBOX:
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return FALSE;
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case 1:
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return FALSE;
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case 2:
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return FALSE;
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case 3:
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return FALSE;
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default:
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return FALSE;
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}
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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] ctfp pointer to the CAN frame to be transmitted
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* @param[in] mailbox mailbox number, @p CAN_ANY_MAILBOX for any mailbox
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*
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* @notapi
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*/
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void can_lld_transmit(CANDriver *canp,
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canmbx_t mailbox,
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const CANTxFrame *ctfp) {
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(void)canp;
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(void)mailbox;
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(void)ctfp;
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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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* @param[in] mailbox mailbox number, @p CAN_ANY_MAILBOX for any mailbox
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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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* @notapi
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*/
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bool_t can_lld_is_rx_nonempty(CANDriver *canp, canmbx_t mailbox) {
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(void)canp;
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(void)mailbox;
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switch (mailbox) {
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case CAN_ANY_MAILBOX:
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return FALSE;
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case 1:
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return FALSE;
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case 2:
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return FALSE;
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default:
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return FALSE;
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}
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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[in] mailbox mailbox number, @p CAN_ANY_MAILBOX for any mailbox
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* @param[out] crfp pointer to the buffer where the CAN frame is copied
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*
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* @notapi
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*/
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void can_lld_receive(CANDriver *canp,
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canmbx_t mailbox,
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CANRxFrame *crfp) {
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(void)canp;
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(void)mailbox;
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(void)crfp;
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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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* @notapi
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*/
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void can_lld_sleep(CANDriver *canp) {
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(void)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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* @notapi
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*/
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void can_lld_wakeup(CANDriver *canp) {
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(void)canp;
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}
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#endif /* CAN_USE_SLEEP_MODE */
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#endif /* HAL_USE_CAN */
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/** @} */
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