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/*
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/mac_lld.c
* @brief MAC Driver subsystem low level driver source template
* @addtogroup MAC_LLD
* @{
*/
#include <ch.h>
#include <mac.h>
/**
* @brief Low level MAC initialization.
*/
void mac_lld_init(void) {
}
/**
* @brief Low level MAC address setup.
*
* @param[in] macp pointer to the @p MACDriver object
* @param[in] p pointer to a six bytes buffer containing the MAC address. If
* this parameter is set to @p NULL then a system default MAC is
* used.
*/
void mac_lld_set_address(MACDriver *macp, const uint8_t *p) {
}
/**
* @brief Returns a transmission descriptor.
* @details One of the available transmission descriptors is locked and
* returned.
*
* @param[in] macp pointer to the @p MACDriver object
* @param[in] size size of the frame to be transmitted
* @return A pointer to a @p MACTransmitDescriptor structure or @p NULL if
* a descriptor is not available.
*/
MACTransmitDescriptor *max_lld_get_transmit_descriptor(MACDriver *macp,
size_t size) {
return NULL;
}
/**
* @brief Releases a transmit descriptor and starts the transmission of the
* enqueued data as a single frame.
*
* @param[in] macp pointer to the @p MACDriver object
* @param[in] tdp the pointer to the @p MACTransmitDescriptor structure
*/
void mac_lld_release_transmit_descriptor(MACDriver *macp,
MACTransmitDescriptor *tdp) {
}
/**
* @brief Returns the buffer associated to a @p MACTransmitDescriptor.
*
* @param[in] tdp the pointer to the @p MACTransmitDescriptor structure
* @return The pointer to the transmit buffer.
*/
uint8_t *mac_lld_get_transmit_buffer(MACTransmitDescriptor *tdp) {
return NULL;
}
/**
* @brief Returns a received frame.
*
* @param[in] macp pointer to the @p MACDriver object
* @param[out szp size of the received frame
* @return A pointer to a @p MACReceiveDescriptor structure or @p NULL if
* the operation timed out or some transient error happened.
*/
MACReceiveDescriptor *max_lld_get_receive_descriptor(MACDriver *macp,
size_t *szp) {
return NULL;
}
/**
* @brief Releases a receive descriptor.
* @details The descriptor and its buffer is made available for more incoming
* frames.
*
* @param[in] macp pointer to the @p MACDriver object
* @param[in] rdp the pointer to the @p MACReceiveDescriptor structure
*/
void mac_lld_release_receive_descriptor(MACDriver *macp,
MACReceiveDescriptor *rdp) {
}
/**
* @brief Returns the buffer associated to a @p MACTransmitDescriptor.
*
* @param[in] tdp the pointer to the @p MACTransmitDescriptor structure
* @return The pointer to the transmit buffer.
*/
uint8_t *mac_lld_get_receive_buffer(MACReceiveDescriptor *rdp) {
return NULL;
}
/**
* @brief Updates and returns the link status.
*
* @param[in] macp pointer to the @p MACDriver object
* @return The link status.
* @retval TRUE if the link is active.
* @retval FALSE if the link is down.
*/
bool_t mac_lld_poll_link_status(MACDriver *macp) {
return FALSE;
}
/** @} */
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