DeviceIO/DppUtilities.cpp

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#include "DppUtilities.h"
#include "stringex.h"

CDppUtilities::CDppUtilities(void)
{
}

CDppUtilities::~CDppUtilities(void)
{
}

// convert a 4 byte long word to a double
// lwStart - starting index of longword
// buffer - byte buffer
double CDppUtilities::LongWordToDouble(int lwStart, unsigned char buffer[])
{
        double dblVal;
        int idx;
        double ByteMask;
        dblVal = 0;
        for(idx=0;idx<4;idx++) {                // build 4 bytes (lwStart-lwStart+3) into double 
                ByteMask = pow(2.0,(8 * idx));
                dblVal = dblVal + (buffer[(lwStart + idx)] * ByteMask);
        }
        return dblVal;
}

// calculate major.minor version from unsigned char, convert/save to double
double CDppUtilities::BYTEVersionToDouble(unsigned char Version)
{
        double dblVersion = 0.0;
        stringex strfn;
        string strTemp;
        strTemp = strfn.Format("%d.%02d",((Version & 240) / 16),(Version & 15));
        dblVersion = atof(strTemp.c_str());
        return dblVersion;
}

// calculate major.minor version from unsigned char, convert/save to string
string CDppUtilities::BYTEVersionToString(unsigned char Version)
{
        string strTemp;
        stringex strfn;
        strTemp = strfn.Format("%d.%02d",((Version & 240) / 16),(Version & 15));
        return strTemp;
}