196 lines
6.2 KiB
C
196 lines
6.2 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011 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/mac_lld.c
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* @brief MAC Driver subsystem low level driver source template.
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*
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* @addtogroup MAC
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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_MAC || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver exported variables. */
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/*===========================================================================*/
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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 MAC initialization.
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*
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* @notapi
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*/
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void mac_lld_init(void) {
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}
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/**
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* @brief Low level MAC address setup.
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*
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* @param[in] macp pointer to the @p MACDriver object
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* @param[in] p pointer to a six bytes buffer containing the MAC
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* address. If this parameter is set to @p NULL then
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* a system default MAC is used.
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*
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* @notapi
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*/
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void mac_lld_set_address(MACDriver *macp, const uint8_t *p) {
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}
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/**
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* @brief Returns a transmission descriptor.
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* @details One of the available transmission descriptors is locked and
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* returned.
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*
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* @param[in] macp pointer to the @p MACDriver object
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* @param[out] tdp pointer to a @p MACTransmitDescriptor structure
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* @return The operation status.
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* @retval RDY_OK a descriptor was obtained.
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* @retval RDY_TIMEOUT descriptor not available.
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*
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* @notapi
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*/
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msg_t max_lld_get_transmit_descriptor(MACDriver *macp,
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MACTransmitDescriptor *tdp) {
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return RDY_OK;
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}
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/**
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* @brief Writes to a transmit descriptor's stream.
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*
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* @param[in] tdp pointer to a @p MACTransmitDescriptor structure
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* @param[in] buf pointer to the buffer containing the data to be
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* written
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* @param[in] size number of bytes to be written
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* @return The number of bytes written into the descriptor's
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* stream, this value can be less than the amount
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* specified in the parameter @p size if the maximum
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* frame size is reached.
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*
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* @notapi
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*/
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size_t mac_lld_write_transmit_descriptor(MACTransmitDescriptor *tdp,
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uint8_t *buf,
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size_t size) {
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return 0;
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}
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/**
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* @brief Releases a transmit descriptor and starts the transmission of the
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* enqueued data as a single frame.
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*
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* @param[in] tdp pointer to a @p MACTransmitDescriptor structure
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*
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* @notapi
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*/
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void mac_lld_release_transmit_descriptor(MACTransmitDescriptor *tdp) {
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}
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/**
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* @brief Returns a receive descriptor.
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*
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* @param[in] macp pointer to a @p MACDriver object
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* @param[out] rdp pointer to a @p MACReceiveDescriptor structure
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* @return The operation status.
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* @retval RDY_OK a descriptor was obtained.
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* @retval RDY_TIMEOUT descriptor not available.
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*
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* @notapi
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*/
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msg_t max_lld_get_receive_descriptor(MACDriver *macp,
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MACReceiveDescriptor *rdp) {
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return RDY_OK;
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}
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/**
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* @brief Reads from a receive descriptor's stream.
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*
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* @param[in] rdp pointer to a @p MACReceiveDescriptor structure
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* @param[in] buf pointer to a buffer that will receive the read data
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* @param[in] size number of bytes to be read
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* @return The number of bytes read from the descriptor's stream,
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* this value can be less than the amount specified in
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* the parameter @p size if there are no more bytes to read.
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*
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* @notapi
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*/
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size_t mac_lld_read_receive_descriptor(MACReceiveDescriptor *rdp,
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uint8_t *buf,
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size_t size) {
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return 0;
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}
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/**
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* @brief Releases a receive descriptor.
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* @details The descriptor and its buffer are made available for more incoming
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* frames.
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*
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* @param[in] rdp pointer to a @p MACReceiveDescriptor structure
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*
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* @notapi
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*/
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void mac_lld_release_receive_descriptor(MACReceiveDescriptor *rdp) {
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}
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/**
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* @brief Updates and returns the link status.
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*
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* @param[in] macp pointer to a @p MACDriver object
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* @return The link status.
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* @retval TRUE if the link is active.
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* @retval FALSE if the link is down.
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*
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* @notapi
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*/
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bool_t mac_lld_poll_link_status(MACDriver *macp) {
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return FALSE;
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}
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#endif /* HAL_USE_MAC */
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/** @} */
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