/*********************************************************************************
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* Copyright: (C) 2018 LingYun IoT System Studio
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* All rights reserved.
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*
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* Filename: tlv.h
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* Description: This file is TLV(Tag Length Value) protocal head file
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*
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* Version: 1.0.0(2018/10/14)
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* Author: Guo Wenxue <guowenxue@gmail.com>
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* ChangeLog: 1, Release initial version on "2018/10/14 12:13:26"
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*
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********************************************************************************/
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#ifndef __TLV_H_
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#define __TLV_H_
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/*+-----------------------------------------------+
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*| TLV Format: Tag(1B) Length(1B) Value(2B) |
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*+-----------------------------------------------+*/
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/*TLV Format Tag definition */
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enum
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{
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TAG_TEMP = 1, /* Temperature */
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TAG_HUMI, /* Relative Humidity */
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TAG_DOOR, /* Door open status */
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TAG_NAK=0xFD, /* NAK packet */
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TAG_ACK=0xFE, /* ACK packet */
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};
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void tlv_dump_buf(const char *prompt, char *buf, int size);
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int tlv_pack_ack(char *buf, int size);
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int tlv_pack_nak(char *buf, int size);
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#endif
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