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/*
* MOST NetServices "Light" V3.2.7.0.1796 MultiInstance Patch
*
* Copyright (C) 2015 Microchip Technology Germany II GmbH & Co. KG
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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/>.
*
* You may also obtain this software under a propriety license from Microchip.
* Please contact Microchip for further information.
*
*/
/*!
* \file
* \brief Implementation of class CTransceiver
*
* \cond MNS_INTERNAL_DOC
* \addtogroup G_TRCV
* @{
*/
/*------------------------------------------------------------------------------------------------*/
/* Includes */
/*------------------------------------------------------------------------------------------------*/
#include "mns_transceiver.h"
#include "mns_misc.h"
#include "mns_pmp.h"
/*------------------------------------------------------------------------------------------------*/
/* Internal prototypes */
/*------------------------------------------------------------------------------------------------*/
static void Trcv_OnTxStatusInternal(void *self, Msg_MostTel_t *tel_ptr, Mns_MsgTxStatus_t status);
/*------------------------------------------------------------------------------------------------*/
/* Implementation */
/*------------------------------------------------------------------------------------------------*/
/*! \brief Constructor of class CTransceiver
* \param self The instance
* \param fifo_ptr Reference to the dedicated port message FIFO
* \param def_src_addr Source address that is preset in Tx message object
* \param mns_inst_id MOST NetServices instance ID
* \param trace_id ID specifies FIFO in traces if multiple transceivers are running
*/
void Trcv_Ctor(CTransceiver *self, CPmFifo *fifo_ptr, uint16_t def_src_addr, uint8_t mns_inst_id, uint8_t trace_id)
{
MISC_MEM_SET(self, 0, sizeof(*self));
self->fifo_ptr = fifo_ptr;
self->tx_def_src = def_src_addr;
self->mns_inst_id = mns_inst_id;
self->own_id = trace_id;
Pool_Ctor(&self->tx_msg_pool, self->tx_msgs, TRCV_SIZE_TX_POOL, mns_inst_id);
TR_ASSERT(self->mns_inst_id, "[TRCV]", (fifo_ptr != NULL));
}
/*! \brief Assigns a function of another class to receive messages
* \details The assigned function is responsible to call Trcv_RxReleaseMsg() it has finished to process it
* \param self The instance
* \param callback_fptr Callback function
* \param inst_ptr The instance of the receiver class
*/
void Trcv_RxAssignReceiver(CTransceiver *self, Trcv_RxCompleteCb_t callback_fptr, void *inst_ptr)
{
self->rx_complete_fptr = callback_fptr;
self->rx_complete_inst = inst_ptr;
}
/*! \brief Assigns a function of another class to filter Rx messages
* \details The assigned function is responsible to discard or pass Rx messages
* \param self The instance
* \param callback_fptr Callback function
* \param inst_ptr The instance of the filter class
*/
void Trcv_RxAssignFilter(CTransceiver *self, Trcv_RxFilterCb_t callback_fptr, void *inst_ptr)
{
self->rx_filter_fptr = callback_fptr;
self->rx_filter_inst = inst_ptr;
}
/*! \brief Releases an Rx message which was received by the assigned receiver
* \param self The instance
* \param tel_ptr Reference to the received message
*/
void Trcv_RxReleaseMsg(CTransceiver *self, Msg_MostTel_t *tel_ptr)
{
CMessage *msg_ptr = (CMessage*)(void*)tel_ptr;
bool check_ok = !Dln_IsNodePartOfAList(Msg_GetNode(msg_ptr)); /* message object shall not be part of a list */
/* because it was provided in an earlier step */
TR_ASSERT(self->mns_inst_id, "[TRCV]", check_ok);
if (check_ok)
{
Fifo_RxReleaseMsg(self->fifo_ptr, msg_ptr);
}
}
/*! \brief Retrieves a message object from the pool
* \param self The instance
* \param size Size of the message in bytes. Valid range: 0..45.
* \return Reference to the Msg_MostTel_t structure if a message is available.
* Otherwise \c NULL.
*/
extern Msg_MostTel_t* Trcv_TxAllocateMsg(CTransceiver *self, uint8_t size)
{
const uint8_t TRCV_CTRL_MAX_SIZE = 45U; /* replace by PMS constant in future */
CMessage *handle = NULL;
Msg_MostTel_t *tel_ptr = NULL;
if (size <= TRCV_CTRL_MAX_SIZE)
{
handle = Pool_GetMsg(&self->tx_msg_pool);
if (handle != NULL)
{
Msg_Cleanup(handle); /* reset headers and fields */
Msg_ReserveHeader(handle, PMP_PM_MAX_SIZE_HEADER + ENC_MAX_SIZE_CONTENT);
tel_ptr = Msg_GetMostTel(handle); /* return public struct of the message object */
tel_ptr->tel.tel_id = 0U;
tel_ptr->tel.tel_len = size;
tel_ptr->tel.tel_cnt = 0U;
tel_ptr->source_addr = self->tx_def_src;
}
}
return tel_ptr;
}
/*! \brief Returns a message object to the transceiver pool a message was allocated from
* \param tel_ptr Reference to the message object which needs to be returned.
*/
void Trcv_TxReleaseMsg(Msg_MostTel_t *tel_ptr)
{
CMessage* msg_ptr = (CMessage*)(void*)tel_ptr; /* avoid MISRA-C warning by converting to "void*" */
bool check_ok = !Dln_IsNodePartOfAList(Msg_GetNode(msg_ptr)); /* message object shall not be part of a list */
TR_ASSERT(0U, "[TRCV]", check_ok); /* because it was provided in an earlier step */
if (check_ok)
{
Pool_ReturnMsg(msg_ptr);
}
}
/*! \brief Prepares a message object for re-transmission
* \param tel_ptr Reference to the Tx message object which needs
* to be reused.
*/
void Trcv_TxReuseMsg(Msg_MostTel_t *tel_ptr)
{
CMessage* msg_ptr = (CMessage*)(void*)tel_ptr;
TR_ASSERT(0U, "[TRCV]", (!Dln_IsNodePartOfAList(Msg_GetNode(msg_ptr)))); /* message object shall not be part of a list */
/* because it was provided in an earlier step */
Msg_Cleanup(msg_ptr); /* reset headers and fields */
Msg_ReserveHeader(msg_ptr, PMP_PM_MAX_SIZE_HEADER + ENC_MAX_SIZE_CONTENT);
}
/*! \brief Transmits a given message object to the INIC
* \details After completed transmission the message object is released automatically
* \param self The instance
* \param tel_ptr Reference to the message object
*/
void Trcv_TxSendMsg(CTransceiver *self, Msg_MostTel_t *tel_ptr)
{
CMessage *msg_ptr;
TR_ASSERT(self->mns_inst_id, "[TRCV]", (tel_ptr != NULL));
msg_ptr = (CMessage*)(void*)tel_ptr;
TR_INFO((self->mns_inst_id, "[TRCV]", "Trcv_TxSendMsg(): FIFO: %u, MSG(tgt:0x%04X, id:%02X.%01X.%04X.%01X)", 6U, self->own_id, tel_ptr->destination_addr, tel_ptr->id.fblock_id, tel_ptr->id.instance_id, tel_ptr->id.function_id, tel_ptr->id.op_type));
Msg_SetTxStatusHandler(msg_ptr, &Trcv_OnTxStatusInternal, self); /* just release the message */
Fifo_Tx(self->fifo_ptr, msg_ptr, false);
}
/*! \brief Transmits a given message object to the INIC with a dedicated result callback
* \param self The instance
* \param tel_ptr Reference to the message object
* \param callback_fptr Callback function which is invoked after message transmission has finished.
* Must be \c NULL to avoid that a callback function is invoked. In this case
* the message object is freed internally. Hence, the message object must
* not provide external payload.
* \param inst_ptr Reference to the instance which is invoked with callback_fptr. Has to be \c
* NULL if callback_fptr is \c NULL.
* \note The provided callback function is responsible to free the message object by calling
* Trcv_TxReleaseMsg() or to reuse the message object by calling Trcv_TxReuseMsg() before
* passing it to one of the transmit functions again.
*/
void Trcv_TxSendMsgExt(CTransceiver *self, Msg_MostTel_t *tel_ptr, Msg_TxStatusCb_t callback_fptr, void *inst_ptr)
{
CMessage *msg_ptr;
TR_ASSERT(self->mns_inst_id, "[TRCV]", (tel_ptr != NULL));
msg_ptr = (CMessage*)(void*)tel_ptr;
if (callback_fptr == NULL)
{
TR_ASSERT(self->mns_inst_id, "[TRCV]", (inst_ptr == NULL));
callback_fptr = &Trcv_OnTxStatusInternal;
inst_ptr = self;
}
TR_INFO((self->mns_inst_id, "[TRCV]", "Trcv_TxSendMsgExt(): FIFO: %u, MSG(tgt:0x%04X, id:%02X.%01X.%04X.%01X)", 6U, self->own_id, tel_ptr->destination_addr, tel_ptr->id.fblock_id, tel_ptr->id.instance_id, tel_ptr->id.function_id, tel_ptr->id.op_type));
Msg_SetTxStatusHandler(msg_ptr, callback_fptr, inst_ptr);
Fifo_Tx(self->fifo_ptr, msg_ptr, false);
}
/*! \brief Transmits a given message object to the INIC bypassing all other messages in the FIFO
* \param self The instance
* \param tel_ptr Reference to the message object
* \param callback_fptr Callback function which is invoked after message transmission has finished.
* Must be \c NULL to avoid that a callback function is invoked. In this case
* the message object is freed internally. Hence, the message object must
* not provide external payload.
* \param inst_ptr Reference to the instance which is invoked
* \note The provided callback function is responsible to free the message object by calling
* Trcv_TxReleaseMsg() or to reuse the message object by calling Trcv_TxReuseMsg() before
* passing it to one of the transmit functions again.
*/
void Trcv_TxSendMsgBypass(CTransceiver *self, Msg_MostTel_t *tel_ptr, Msg_TxStatusCb_t callback_fptr, void *inst_ptr)
{
CMessage *msg_ptr;
TR_ASSERT(self->mns_inst_id, "[TRCV]", (tel_ptr != NULL));
msg_ptr = (CMessage*)(void*)tel_ptr;
if (callback_fptr == NULL)
{
TR_ASSERT(self->mns_inst_id, "[TRCV]", (inst_ptr == NULL));
callback_fptr = &Trcv_OnTxStatusInternal;
inst_ptr = self;
}
Msg_SetTxStatusHandler(msg_ptr, callback_fptr, inst_ptr);
Fifo_Tx(self->fifo_ptr, msg_ptr, true);
}
/*! \brief Callback function which is invoked instead of an external callback
* as soon as channel transmission was finished in PMS.
* \param self The instance
* \param tel_ptr Reference to the message object
* \param status Transmission status
*/
static void Trcv_OnTxStatusInternal(void *self, Msg_MostTel_t *tel_ptr, Mns_MsgTxStatus_t status)
{
Trcv_TxReleaseMsg(tel_ptr);
MISC_UNUSED(self);
MISC_UNUSED(status);
}
/*! \brief Internal callback function which is intended to be
* invoked by the port message channel on completed reception.
* \param self The instance
* \param tel_ptr Reference to the message object
*/
void Trcv_RxOnMsgComplete(void *self, CMessage *tel_ptr)
{
CTransceiver *self_ = (CTransceiver*)self;
bool discard = false;
TR_INFO((self_->mns_inst_id, "[TRCV]", "Trcv_RxOnMsgComplete(): FIFO: %u, MSG(src:0x%04X, id:%02X.%01X.%04X.%01X)", 6U, self_->own_id, tel_ptr->pb_msg.source_addr, tel_ptr->pb_msg.id.fblock_id, tel_ptr->pb_msg.id.instance_id, tel_ptr->pb_msg.id.function_id, tel_ptr->pb_msg.id.op_type));
if (self_->rx_filter_fptr != NULL)
{
discard = self_->rx_filter_fptr(self_->rx_filter_inst, Msg_GetMostTel(tel_ptr));
}
if ((self_->rx_complete_fptr != NULL) && (discard == false))
{
/* the assigned Rx function is responsible to release the message */
self_->rx_complete_fptr(self_->rx_complete_inst, Msg_GetMostTel(tel_ptr));
}
else
{
Fifo_RxReleaseMsg(self_->fifo_ptr, tel_ptr);
}
}
/*!
* @}
* \endcond
*/
/*------------------------------------------------------------------------------------------------*/
/* End of file */
/*------------------------------------------------------------------------------------------------*/
|
