150 lines
4.5 KiB
C
150 lines
4.5 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/mac_lld.c
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* @brief MAC Driver subsystem low level driver source template
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* @addtogroup MAC_LLD
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* @{
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*/
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#include <ch.h>
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#include <mac.h>
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/**
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* @brief Low level MAC initialization.
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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 address. If
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* this parameter is set to @p NULL then a system default MAC is
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* used.
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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 the descriptor was obtained.
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* @retval RDY_TIMEOUT descriptor not available.
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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 cointaining the data to be 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 stream, this
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* value can be less than the amount specified in the parameter
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* @p size if the maximum frame size is reached.
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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 the pointer to the @p MACTransmitDescriptor structure
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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 the @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 the descriptor was obtained.
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* @retval RDY_TIMEOUT descriptor not available.
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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 the 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, this
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* value can be less than the amount specified in the parameter
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* @p size if there are no more bytes to read.
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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 the pointer to the @p MACReceiveDescriptor structure
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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 the @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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bool_t mac_lld_poll_link_status(MACDriver *macp) {
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return FALSE;
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}
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/** @} */
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