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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 message encoder
*
* \cond MNS_INTERNAL_DOC
* \addtogroup G_ENCODER
* @{
*/
/*------------------------------------------------------------------------------------------------*/
/* Includes */
/*------------------------------------------------------------------------------------------------*/
#include "mns_encoder.h"
#include "mns_misc.h"
/*------------------------------------------------------------------------------------------------*/
/* Constants */
/*------------------------------------------------------------------------------------------------*/
#define ENC_LLR_TIME_DEFAULT 11U /*! \brief Default LLR time required to transmit valid messages
* with ContentType 0x81
*/
/*------------------------------------------------------------------------------------------------*/
/* Internal prototypes */
/*------------------------------------------------------------------------------------------------*/
static void Enc_Encode_00(Msg_MostTel_t *tel_ptr, uint8_t header[]);
static void Enc_Decode_00(Msg_MostTel_t *tel_ptr, uint8_t header[]);
static void Enc_Encode_80(Msg_MostTel_t *tel_ptr, uint8_t header[]);
static void Enc_Decode_80(Msg_MostTel_t *tel_ptr, uint8_t header[]);
static void Enc_Encode_81(Msg_MostTel_t *tel_ptr, uint8_t header[]);
static void Enc_Decode_81(Msg_MostTel_t *tel_ptr, uint8_t header[]);
/*------------------------------------------------------------------------------------------------*/
/* Implementation */
/*------------------------------------------------------------------------------------------------*/
/*! \brief Retrieves the interface of a specific encoder
* \details Creates all encoder interfaces as singletons
* \param type Specifies the type of encoder to retrieve
* \return The desired interface to the specified encoder
*/
IEncoder *Enc_GetEncoder(Enc_MsgContent_t type)
{
static IEncoder enc_content_00 = {ENC_CONTENT_00, 8U, 12U, &Enc_Encode_00, &Enc_Decode_00};
static IEncoder enc_content_80 = {ENC_CONTENT_80, 6U, 11U, &Enc_Encode_80, &Enc_Decode_80};
static IEncoder enc_content_81 = {ENC_CONTENT_81, 6U, 13U, &Enc_Encode_81, &Enc_Decode_81};
IEncoder *encoder_ptr = NULL;
switch (type)
{
case ENC_CONTENT_00:
encoder_ptr = &enc_content_00;
break;
case ENC_CONTENT_80:
encoder_ptr = &enc_content_80;
break;
case ENC_CONTENT_81:
encoder_ptr = &enc_content_81;
break;
default:
encoder_ptr = NULL;
break;
}
return encoder_ptr;
}
/*------------------------------------------------------------------------------------------------*/
/* Content type "00" */
/*------------------------------------------------------------------------------------------------*/
/*! \brief Encodes a message telegram to the "ContentType 0x00" MOST message header
* \param tel_ptr Reference to the Msg_MostTel_t structure
* \param header The header buffer
*/
static void Enc_Encode_00(Msg_MostTel_t *tel_ptr, uint8_t header[])
{
header[0] = MISC_HB(tel_ptr->source_addr);
header[1] = MISC_LB(tel_ptr->source_addr);
header[2] = MISC_HB(tel_ptr->destination_addr);
header[3] = MISC_LB(tel_ptr->destination_addr);
header[4] = tel_ptr->id.fblock_id;
header[5] = tel_ptr->id.instance_id;
header[6] = MISC_HB(tel_ptr->id.function_id);
header[7] = MISC_LB(tel_ptr->id.function_id);
header[8] = (uint8_t)(tel_ptr->tel.tel_id << 4) | (uint8_t)((uint8_t)tel_ptr->id.op_type & 0xFU);
header[9] = tel_ptr->opts.llrbc;
header[10] = tel_ptr->tel.tel_cnt;
header[11] = tel_ptr->tel.tel_len;
}
/*! \brief Decodes a "ContentType 0x00" MOST message header to a message telegram structure
* \param tel_ptr Reference to the Msg_MostTel_t structure
* \param header The header buffer
*/
static void Enc_Decode_00(Msg_MostTel_t *tel_ptr, uint8_t header[])
{
tel_ptr->source_addr = (uint16_t)((uint16_t)header[0] << 8) | (uint16_t)header[1];
tel_ptr->destination_addr = (uint16_t)((uint16_t)header[2] << 8) | (uint16_t)header[3];
tel_ptr->id.fblock_id = header[4];
tel_ptr->id.instance_id = header[5];
tel_ptr->id.function_id = (uint16_t)((uint16_t)header[6] << 8) | (uint16_t)header[7];
tel_ptr->tel.tel_id = header[8] >> 4; /* high nibble: TelId */
tel_ptr->id.op_type = (Mns_OpType_t)(header[8] & 0x0FU); /* low nibble: OPType */
tel_ptr->opts.llrbc = header[9];
tel_ptr->tel.tel_cnt = header[10];
tel_ptr->tel.tel_len = header[11];
tel_ptr->tel.tel_data_ptr = &header[12];
}
/*------------------------------------------------------------------------------------------------*/
/* Content type "0x80" */
/*------------------------------------------------------------------------------------------------*/
/*! \brief Encodes a message telegram to the "ContentType 0x80" MOST message header
* \param tel_ptr Reference to the Msg_MostTel_t structure
* \param header The header buffer
*/
static void Enc_Encode_80(Msg_MostTel_t *tel_ptr, uint8_t header[])
{ /* high nibble: TelId low nibble: OPType */
header[0] = (uint8_t)(tel_ptr->tel.tel_id << 4) | (uint8_t)((uint8_t)tel_ptr->id.op_type & 0xFU);
header[1] = tel_ptr->tel.tel_cnt;
header[2] = tel_ptr->tel.tel_len;
header[3] = MISC_HB(tel_ptr->id.function_id);
header[4] = MISC_LB(tel_ptr->id.function_id);
header[5] = MISC_HB(tel_ptr->source_addr);
header[6] = MISC_LB(tel_ptr->source_addr);
header[7] = MISC_HB(tel_ptr->destination_addr);
header[8] = MISC_LB(tel_ptr->destination_addr);
header[9] = tel_ptr->id.fblock_id;
header[10] = tel_ptr->id.instance_id;
}
/*! \brief Decodes a "ContentType 0x80" MOST message header to a message telegram structure
* \param tel_ptr Reference to the Msg_MostTel_t structure
* \param header The header buffer
*/
static void Enc_Decode_80(Msg_MostTel_t *tel_ptr, uint8_t header[])
{
tel_ptr->tel.tel_id = header[0] >> 4; /* high nibble: TelId */
tel_ptr->id.op_type = (Mns_OpType_t)(header[0] & 0x0FU); /* low nibble: OPType */
tel_ptr->tel.tel_cnt = header[1];
tel_ptr->tel.tel_len = header[2];
tel_ptr->id.function_id = (uint16_t)((uint16_t)header[3] << 8) | (uint16_t)header[4];
tel_ptr->source_addr = (uint16_t)((uint16_t)header[5] << 8) | (uint16_t)header[6];
tel_ptr->destination_addr = (uint16_t)((uint16_t)header[7] << 8) | (uint16_t)header[8];
tel_ptr->id.fblock_id = header[9];
tel_ptr->id.instance_id = header[10];
tel_ptr->tel.tel_data_ptr = &header[11];
}
/*------------------------------------------------------------------------------------------------*/
/* Content type "0x81" */
/*------------------------------------------------------------------------------------------------*/
/*! \brief Encodes a message telegram to the "ContentType 0x81" MOST message header
* \param tel_ptr Reference to the Msg_MostTel_t structure
* \param header The header buffer
*/
static void Enc_Encode_81(Msg_MostTel_t *tel_ptr, uint8_t header[])
{
header[0] = tel_ptr->opts.llrbc;
header[1] = ENC_LLR_TIME_DEFAULT;
/* high nibble: TelId low nibble: OPType */
header[2] = (uint8_t)(tel_ptr->tel.tel_id << 4) | (uint8_t)((uint8_t)tel_ptr->id.op_type & 0xFU);
header[3] = tel_ptr->tel.tel_cnt;
header[4] = tel_ptr->tel.tel_len;
header[5] = MISC_HB(tel_ptr->id.function_id);
header[6] = MISC_LB(tel_ptr->id.function_id);
header[7] = MISC_HB(tel_ptr->source_addr);
header[8] = MISC_LB(tel_ptr->source_addr);
header[9] = MISC_HB(tel_ptr->destination_addr);
header[10] = MISC_LB(tel_ptr->destination_addr);
header[11] = tel_ptr->id.fblock_id;
header[12] = tel_ptr->id.instance_id;
}
/*! \brief Decodes a "ContentType 0x81" MOST message header to a message telegram structure
* \param tel_ptr Reference to the Msg_MostTel_t structure
* \param header The header buffer
*/
static void Enc_Decode_81(Msg_MostTel_t *tel_ptr, uint8_t header[])
{
tel_ptr->opts.llrbc = header[0];
tel_ptr->tel.tel_id = header[2] >> 4; /* high nibble: TelId */
tel_ptr->id.op_type = (Mns_OpType_t)(header[2] & 0x0FU); /* low nibble: OPType */
tel_ptr->tel.tel_cnt = header[3];
tel_ptr->tel.tel_len = header[4];
tel_ptr->id.function_id = (uint16_t)((uint16_t)header[5] << 8) | (uint16_t)header[6];
tel_ptr->source_addr = (uint16_t)((uint16_t)header[7] << 8) | (uint16_t)header[8];
tel_ptr->destination_addr = (uint16_t)((uint16_t)header[9] << 8) | (uint16_t)header[10];
tel_ptr->id.fblock_id = header[11];
tel_ptr->id.instance_id = header[12];
tel_ptr->tel.tel_data_ptr = &header[13];
}
/*!
* @}
* \endcond
*/
/*------------------------------------------------------------------------------------------------*/
/* End of file */
/*------------------------------------------------------------------------------------------------*/
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