public void AddFilters(string path)
{
try
{
DirectoryInfo di = new DirectoryInfo(path);
FileInfo[] files = di.GetFiles("*.f36");
foreach (FileInfo fi in files)
{
try
{
AD6636FilterFile filter = new AD6636FilterFile(fi.FullName);
if (filter.Valid && filter.InputFrequency == NCOFreq)
{
FilterFiles.Add(filter);
}
}
catch (Exception e)
{
}
}
}
catch (Exception e)
{
}
RebuildFilterFileButtons();
}
public bool SetFilter(AD6636FilterFile filter)
{
if (AD6636 == null)
{
return(false);
}
return(AD6636.SetFilter(filter));
}
public bool SetFilter(int channel, AD6636FilterFile filter)
{
bool success = true;
CurrentFilter = filter;
FilterRate = filter.Rate;
_FilterWidth = filter.Width;
lock (this)
{
/* set the MRCF channel to modify */
success &= this.Device.AD6636WriteReg(AD6636_REG_IOAC, AD6636_REG_IOAC_L, (1 << channel));
/* set the source FIR to read from */
success &= this.Device.AD6636WriteReg(AD6636_REG_MRCFC, AD6636_REG_MRCFC_L, (channel << 10));
success &= this.Device.AD6636WriteReg(104, 2, 0);
success &= this.Device.AD6636WriteReg(108, 2, 5);
success &= this.Device.AD6636WriteReg(110, 2, 5);
success &= this.Device.AD6636WriteReg(116, 2, 0);
int filterFlags = 0;
if (filter.HB2)
{
filterFlags |= 0x01;
}
if (filter.FIR2)
{
filterFlags |= 0x02;
}
if (filter.HB1)
{
filterFlags |= 0x04;
}
if (filter.FIR1)
{
filterFlags |= 0x08;
}
success &= this.Device.AD6636WriteReg(120, 1, filterFlags);
success &= this.Device.AD6636WriteReg(121, 1, filter.CIC5Scale);
success &= this.Device.AD6636WriteReg(122, 1, filter.CIC5Decimation - 1);
if (filter.CIC5)
{
success &= this.Device.AD6636WriteReg(123, 1, 0);
}
else
{
success &= this.Device.AD6636WriteReg(123, 1, 1);
}
success &= this.Device.AD6636WriteReg(136, 1, filter.DRCFNTaps - 1);
success &= this.Device.AD6636WriteReg(137, 1, (long)(64 - filter.DRCFNTaps / 2));
success &= this.Device.AD6636WriteReg(138, 2, 0x700 | ((filter.DRCFDecimation - 1) << 4));
success &= this.Device.AD6636WriteReg(148, 1, filter.CRCFNTaps - 1);
success &= this.Device.AD6636WriteReg(149, 1, (long)(64 - filter.CRCFNTaps / 2));
success &= this.Device.AD6636WriteReg(150, 2, 0x700 | ((filter.CRCFDecimation - 1) << 4));
success &= this.Device.AD6636WriteReg(184, 2, 0);
int DRCFEntries = (int)((filter.DRCFNTaps + 1) / 2);
success &= this.Device.AD6636WriteReg(140, 1, 0);
success &= this.Device.AD6636WriteReg(141, 1, DRCFEntries - 1);
for (int pos = 0; pos < DRCFEntries; pos++)
{
success &= this.Device.AD6636WriteReg(144, 2, filter.DRCFTaps[DRCFEntries - 1 + pos]);
}
int CRCFEntries = (int)((filter.CRCFNTaps + 1) / 2);
success &= this.Device.AD6636WriteReg(152, 1, 0);
success &= this.Device.AD6636WriteReg(153, 1, CRCFEntries - 1);
for (int pos = 0; pos < CRCFEntries; pos++)
{
success &= this.Device.AD6636WriteReg(156, 3, filter.CRCFTaps[CRCFEntries - 1 + pos]);
}
success &= this.Device.AD6636WriteReg(184, 2, 0);
if (FilterRate > NCOFreq / 4)
{
success &= SetDivisor(1);
}
else if (FilterRate > NCOFreq / 8)
{
success &= SetDivisor(2);
}
else if (FilterRate > NCOFreq / 16)
{
success &= SetDivisor(4);
}
else
{
success &= SetDivisor(8);
}
success &= SelectChannel(channel);
success &= SoftSync();
/* inform listeners */
if (SamplingRateChanged != null)
{
SamplingRateChanged(this, null);
}
if (FilterWidthChanged != null)
{
FilterWidthChanged(this, null);
}
}
return(success);
}
public bool SetFilter(AD6636FilterFile filter)
{
return(SetFilter(CurrentChannel, filter));
}
