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106 lines
4.1 KiB
106 lines
4.1 KiB
5 years ago
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/*
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FirmataParser.h
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Copyright (c) 2006-2008 Hans-Christoph Steiner. All rights reserved.
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Copyright (C) 2009-2016 Jeff Hoefs. All rights reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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See file LICENSE.txt for further informations on licensing terms.
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*/
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#ifndef FirmataParser_h
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#define FirmataParser_h
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#if defined(__cplusplus) && !defined(ARDUINO)
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#include <cstddef>
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#include <cstdint>
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#else
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#include <stddef.h>
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#include <stdint.h>
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#endif
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namespace firmata {
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class FirmataParser
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{
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public:
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/* callback function types */
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typedef void (*callbackFunction)(void * context, uint8_t command, uint16_t value);
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typedef void (*dataBufferOverflowCallbackFunction)(void * context);
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typedef void (*stringCallbackFunction)(void * context, const char * c_str);
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typedef void (*sysexCallbackFunction)(void * context, uint8_t command, size_t argc, uint8_t * argv);
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typedef void (*systemCallbackFunction)(void * context);
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typedef void (*versionCallbackFunction)(void * context, size_t sv_major, size_t sv_minor, const char * firmware);
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FirmataParser(uint8_t * dataBuffer = (uint8_t *)NULL, size_t dataBufferSize = 0);
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/* serial receive handling */
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void parse(uint8_t value);
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bool isParsingMessage(void) const;
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int setDataBufferOfSize(uint8_t * dataBuffer, size_t dataBufferSize);
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/* attach & detach callback functions to messages */
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void attach(uint8_t command, callbackFunction newFunction, void * context = NULL);
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void attach(dataBufferOverflowCallbackFunction newFunction, void * context = NULL);
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void attach(uint8_t command, stringCallbackFunction newFunction, void * context = NULL);
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void attach(uint8_t command, sysexCallbackFunction newFunction, void * context = NULL);
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void attach(uint8_t command, systemCallbackFunction newFunction, void * context = NULL);
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void attach(uint8_t command, versionCallbackFunction newFunction, void * context = NULL);
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void detach(uint8_t command);
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void detach(dataBufferOverflowCallbackFunction);
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private:
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/* input message handling */
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bool allowBufferUpdate;
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uint8_t * dataBuffer; // multi-byte data
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size_t dataBufferSize;
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uint8_t executeMultiByteCommand; // execute this after getting multi-byte data
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uint8_t multiByteChannel; // channel data for multiByteCommands
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size_t waitForData; // this flag says the next serial input will be data
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/* sysex */
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bool parsingSysex;
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size_t sysexBytesRead;
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/* callback context */
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void * currentAnalogCallbackContext;
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void * currentDigitalCallbackContext;
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void * currentReportAnalogCallbackContext;
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void * currentReportDigitalCallbackContext;
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void * currentPinModeCallbackContext;
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void * currentPinValueCallbackContext;
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void * currentReportFirmwareCallbackContext;
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void * currentReportVersionCallbackContext;
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void * currentDataBufferOverflowCallbackContext;
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void * currentStringCallbackContext;
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void * currentSysexCallbackContext;
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void * currentSystemResetCallbackContext;
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/* callback functions */
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callbackFunction currentAnalogCallback;
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callbackFunction currentDigitalCallback;
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callbackFunction currentReportAnalogCallback;
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callbackFunction currentReportDigitalCallback;
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callbackFunction currentPinModeCallback;
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callbackFunction currentPinValueCallback;
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dataBufferOverflowCallbackFunction currentDataBufferOverflowCallback;
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stringCallbackFunction currentStringCallback;
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sysexCallbackFunction currentSysexCallback;
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versionCallbackFunction currentReportFirmwareCallback;
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systemCallbackFunction currentReportVersionCallback;
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systemCallbackFunction currentSystemResetCallback;
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/* private methods ------------------------------ */
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bool bufferDataAtPosition(const uint8_t data, const size_t pos);
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size_t decodeByteStream(size_t bytec, uint8_t * bytev);
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void processSysexMessage(void);
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void systemReset(void);
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};
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} // firmata
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#endif /* FirmataParser_h */
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