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82 lines
3.0 KiB
C++
82 lines
3.0 KiB
C++
/*
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ActisenseReader.h
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Copyright (c) 2015-2021 Timo Lappalainen, Kave Oy, www.kave.fi
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to use,
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copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
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Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
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OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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This is class for reading Actisense format messages from given stream.
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There is unresolved problem to use programming port with reading data.
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Read works fine for a while, but then stops. With e.g. Arduino Due
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USB port there is no problem.
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*/
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#ifndef _ACTISENSE_READER_H_
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#define _ACTISENSE_READER_H_
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#include "N2kMsg.h"
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#include "N2kStream.h"
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class tActisenseReader
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{
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protected:
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#define MAX_STREAM_MSG_BUF_LEN 300
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bool StartOfTextReceived;
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bool MsgIsComing;
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bool EscapeReceived;
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int byteSum;
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// Buffer for incoming messages from stream
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unsigned char MsgBuf[MAX_STREAM_MSG_BUF_LEN];
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int MsgWritePos;
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unsigned char DefaultSource;
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protected:
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N2kStream* ReadStream;
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// Handler callback
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void (*MsgHandler)(const tN2kMsg &N2kMsg);
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protected:
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bool AddByteToBuffer(char NewByte);
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void ClearBuffer();
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bool CheckMessage(tN2kMsg &N2kMsg);
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public:
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tActisenseReader();
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// Set stream, which would be used for reading messages. You have to
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// open stream first, so e.g. for SerialUSB call begin first.
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void SetReadStream(N2kStream* _stream) { ReadStream=_stream; }
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// If you use application, which sends data by using Actisense data request type, source
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// set by this function will be set as source. Default=65;
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void SetDefaultSource(unsigned char source) { DefaultSource=source; }
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// You can either call this or ParseMessages periodically.
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bool GetMessageFromStream(tN2kMsg &N2kMsg, bool ReadOut=true);
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bool IsStart(char ch);
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// Set message handler with SetMsgHandler and then call this periodically or use GetMessageFromStream
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void ParseMessages();
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// Set message handler to be used in ParseMessages, when message has been received.
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void SetMsgHandler(void (*_MsgHandler)(const tN2kMsg &N2kMsg)) { MsgHandler=_MsgHandler; }
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bool Handling() const { return MsgIsComing || EscapeReceived || StartOfTextReceived; }
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};
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#endif
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