Brad Powell / Mbed 2 deprecated xplane_io

The xplane_io (X-Plane I/O) program is used to establish network communications, via UDP, with the X-Plane flight simulator running on a computer. The code consists of class libraries that abstract the lower-level UDP packet encoding and decoding details, according to the UDP protocol specifications in X-Plane version 9. Any X-Plane DATA packets can be sent and received, and any X-Plane DataRefs can be set by sending DREF packets to X-Plane.

Dependencies:   EthernetNetIf mbed ConfigFile

XPlaneUdp/XPlaneUdpDREF.cpp@0:a5d13af495af, 2011-12-21 (annotated)

Committer:
bapowell
Date:
Wed Dec 21 22:29:59 2011 +0000
Revision:
0:a5d13af495af

        

        
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#include "XPlaneUdpDREF.h"





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XPlaneUdpDREF::XPlaneUdpDREF(char * drefName, bool reverseByteOrder) {





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    _drefName = drefName;





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    _reverseByteOrder = reverseByteOrder;





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    _dataChanged = false;





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    _drefFloat = DREF_VALUE_NA;





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    _drefInt = DREF_VALUE_NA;





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}





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char * XPlaneUdpDREF::drefName() const {





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    return _drefName;





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}





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float XPlaneUdpDREF::drefFloat() const {





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    return _drefFloat;





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}





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int XPlaneUdpDREF::drefInt() const {





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    return _drefInt;





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}





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void XPlaneUdpDREF::drefFloat(float floatVal) {





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    _drefFloat = floatVal;





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    _drefInt = DREF_VALUE_NA;





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    setDataChanged();





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}





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void XPlaneUdpDREF::drefInt(int intVal) {





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    _drefInt = intVal;





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    _drefFloat = DREF_VALUE_NA;





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    setDataChanged();





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}





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    /**





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     * Starting at the given pointer location, populate bytes from the dataRef value and name.





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     * Byte order will be reversed, according to the reverseBytes property.





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     */





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void XPlaneUdpDREF::populateDREFMessage(char * bytes) {





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    if (_drefInt != DREF_VALUE_NA) {





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        memcpy(bytes, &_drefInt, 4);





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    }





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    else {





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        memcpy(bytes, &_drefFloat, 4);





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    }





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    if (_reverseByteOrder) {





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        reverse4Bytes((char*) bytes);





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    }





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    strcpy(bytes + 4, _drefName);





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}





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bool XPlaneUdpDREF::isDataChanged() const {





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    return _dataChanged;





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}





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void XPlaneUdpDREF::setDataChanged() {





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    _dataChanged = true;





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}





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void XPlaneUdpDREF::resetDataChanged() {





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    _dataChanged = false;





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}





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void XPlaneUdpDREF::toString(FILE * outputStream) {





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    fprintf(outputStream, "DataRef: name=%s, intVal=%d, floatVal=%f, revBytes=%d",





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            _drefName, _drefInt, _drefFloat, _reverseByteOrder);





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}