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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 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 "hal.h"
#if CH_HAL_USE_MAC || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief Low level MAC initialization.
*
* @notapi
*/
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.
*
* @notapi
*/
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[out] tdp pointer to a @p MACTransmitDescriptor structure
* @return The operation status.
* @retval RDY_OK a descriptor was obtained.
* @retval RDY_TIMEOUT descriptor not available.
*
* @notapi
*/
msg_t max_lld_get_transmit_descriptor(MACDriver *macp,
MACTransmitDescriptor *tdp) {
return RDY_OK;
}
/**
* @brief Writes to a transmit descriptor's stream.
*
* @param[in] tdp pointer to a @p MACTransmitDescriptor structure
* @param[in] buf pointer to the buffer containing the data to be
* written
* @param[in] size number of bytes to be written
* @return The number of bytes written into the descriptor's
* stream, this value can be less than the amount
* specified in the parameter @p size if the maximum
* frame size is reached.
*
* @notapi
*/
size_t mac_lld_write_transmit_descriptor(MACTransmitDescriptor *tdp,
uint8_t *buf,
size_t size) {
return 0;
}
/**
* @brief Releases a transmit descriptor and starts the transmission of the
* enqueued data as a single frame.
*
* @param[in] tdp pointer to a @p MACTransmitDescriptor structure
*
* @notapi
*/
void mac_lld_release_transmit_descriptor(MACTransmitDescriptor *tdp) {
}
/**
* @brief Returns a receive descriptor.
*
* @param[in] macp pointer to a @p MACDriver object
* @param[out] rdp pointer to a @p MACReceiveDescriptor structure
* @return The operation status.
* @retval RDY_OK a descriptor was obtained.
* @retval RDY_TIMEOUT descriptor not available.
*
* @notapi
*/
msg_t max_lld_get_receive_descriptor(MACDriver *macp,
MACReceiveDescriptor *rdp) {
return RDY_OK;
}
/**
* @brief Reads from a receive descriptor's stream.
*
* @param[in] rdp pointer to a @p MACReceiveDescriptor structure
* @param[in] buf pointer to a buffer that will receive the read data
* @param[in] size number of bytes to be read
* @return The number of bytes read from the descriptor's stream,
* this value can be less than the amount specified in
* the parameter @p size if there are no more bytes to read.
*
* @notapi
*/
size_t mac_lld_read_receive_descriptor(MACReceiveDescriptor *rdp,
uint8_t *buf,
size_t size) {
return 0;
}
/**
* @brief Releases a receive descriptor.
* @details The descriptor and its buffer are made available for more incoming
* frames.
*
* @param[in] rdp pointer to a @p MACReceiveDescriptor structure
*
* @notapi
*/
void mac_lld_release_receive_descriptor(MACReceiveDescriptor *rdp) {
}
/**
* @brief Updates and returns the link status.
*
* @param[in] macp pointer to a @p MACDriver object
* @return The link status.
* @retval TRUE if the link is active.
* @retval FALSE if the link is down.
*
* @notapi
*/
bool_t mac_lld_poll_link_status(MACDriver *macp) {
return FALSE;
}
#endif /* CH_HAL_USE_MAC */
/** @} */
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