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Diffstat (limited to 'ucs2-lib/src/ucs_encoder.c')
| -rw-r--r-- | ucs2-lib/src/ucs_encoder.c | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/ucs2-lib/src/ucs_encoder.c b/ucs2-lib/src/ucs_encoder.c new file mode 100644 index 0000000..46d90b5 --- /dev/null +++ b/ucs2-lib/src/ucs_encoder.c @@ -0,0 +1,253 @@ +/*------------------------------------------------------------------------------------------------*/ +/* UNICENS V2.1.0-3491 */ +/* Copyright (c) 2017 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 UCS_INTERNAL_DOC + * \addtogroup G_ENCODER + * @{ + */ + +/*------------------------------------------------------------------------------------------------*/ +/* Includes */ +/*------------------------------------------------------------------------------------------------*/ +#include "ucs_encoder.h" +#include "ucs_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 = (Ucs_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 = (Ucs_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 = (Ucs_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 */ +/*------------------------------------------------------------------------------------------------*/ + |