private void GenerateWaveTable(Wellenform wellenform)
{
for (int i = 0; i < BitTiefe; i++)
{
WaveTable[i] = (int)(WaveValue(wellenform, i) * BitTiefe);
}
}
public FunktionsgeneratorMCP4921(Wellenform wellenform)
{
wiringPiLib.WiringPiSetupGpio();
da = new DA_MCP4921_SPI(wiringPiLib, 18, 23, 25);
GenerateWaveTable(wellenform);
}
public Funktionsgenerator8562FPZ_Parallel(Wellenform wellenform)
{
wiringPiLib.WiringPiSetupGpio();
da = new DA_8562FPZ_Parallel(wiringPiLib);
GenerateWaveTable(wellenform);
GetEigenFrequenz();
}
private float WaveValue(Wellenform wellenform, int value)
{
switch (wellenform)
{
case Wellenform.Saege:
return(((float)value) / BitTiefe);
case Wellenform.Dreieck:
{
float fvalue = (2 * (float)value) / BitTiefe;
if (fvalue > 1)
{
fvalue = 2 - fvalue;
}
return(fvalue);
}
case Wellenform.Rechteck:
{
if (value < BitTiefe / 2)
{
return(0);
}
return(1);
}
case Wellenform.Sinus:
{
double degrees = (double)value / (double)BitTiefe * 360;
double sinus = Math.Sin(Math.PI / 180 * degrees);
return((float)(sinus / 2) + 1);
}
default:
return(0);
}
}
