static void Main(string[] args)
{
var devices = NetHackrf.HackrfDeviceList(); // get list of all connected hackrf transceivers
if (devices.Length == 0) // if no hackrfs discovered
{
System.Console.WriteLine("No hackrf devices were found");
System.Console.WriteLine("Press any key to close application");
System.Console.ReadKey();
return;
}
System.Console.WriteLine("Press any key to stop the application...");
NetHackrf device = devices[0].OpenDevice(); // connecting to the first transceiver in the list
device.CarrierFrequencyMHz = 104.7;
device.SampleFrequencyMHz = 2.016; // 48kHz * 42
device.LNAGainDb = 40; // setting amlpifiers gain values
device.VGAGainDb = 40;
device.FilterBandwidthMHz = 0.2;
FileStream output = new FileStream("test.wav", FileMode.OpenOrCreate); // opening wave file
Stream stream = device.StartRX();
byte[] buffer = new byte[1000000];
bool started = false;
AddWaveHeader(output, 0); // adding wave header with zero file length placeholders (we will change them later)
int file_length = 0;
try {
while (System.Console.KeyAvailable == false)
{
stream.Read(buffer, 0, buffer.Length); // reading interpolated IQ data from stream
System.Console.WriteLine("demodulating...");
var IQ_data = ConvertToIQ(buffer); // converting interpolated IQ data to complex array
IQ_data = LPF1(IQ_data); // low pass filter to cutoff other frequencies
var demod = DemodFMsamples(IQ_data, 4000); // FM demodulator
demod = LPF2(demod); // low pass filter to cutoff pilot tone, stereo fm subcarrier and RDS
demod = Decimate(demod, 42); // changing sample frequency to 48kHz
var bytes = ConvertToBuffer(demod); // converting array of double to array of bytes
file_length += bytes.Length;
output.Write(bytes); // writing sound data to the file
}
stream.Close();
output.Close(); // closing stream and file
output = new FileStream("test.wav", FileMode.Open); // changing length values in the header to correct ones
AddWaveHeader(output, file_length);
output.Close();
}
catch (Exception)
{
device.Reset(); // reset hackRF if something goes wrong
}
}
static public void Main(string[] args)
{
System.Console.WriteLine(NetHackrf.HackrfLibraryVersion());
System.Console.WriteLine(NetHackrf.HackrfLibraryRelease());
var devices = NetHackrf.HackrfDeviceList(); // get list of all connected hackrf transceivers
foreach (var i in devices)
{
System.Console.WriteLine($"serial=\"{i.serial_number}\", boardId=\"{i.usb_board_id}\", index={i.usb_device_index}"); // print information about each hackrf
}
if (devices.Length == 0) // if no hackrfs discovered
{
System.Console.WriteLine("No hackrf devices were found");
System.Console.WriteLine("Press any key to close application");
System.Console.ReadKey();
return;
}
NetHackrf device = devices[0].OpenDevice(); // connect to a first hackrf in the list
System.Console.WriteLine(device.HackrfVersion);
System.Console.WriteLine(device.UsbApiVersion);
device.CarrierFrequencyMHz = 444.0; // set carrier frequency
device.SampleFrequencyMHz = 2; // set sample frequency
device.FilterBandwidthMHz = 0.5;
device.TXVGAGainDb = 20; // set TX amplifier gain
byte[] buf = new byte[20000000];
double phase = 0;
for (int i = 0; i < buf.Length; i += 2) // calculate NFM test signal
{
double signal = 50.0 * Math.Sin((double)i / 4000.0 * Math.PI * 2.0);
phase += signal * 0.0001;
buf[i] = (byte)((sbyte)(Math.Sin(phase) * 120.0));
buf[i + 1] = (byte)((sbyte)(Math.Cos(phase) * 120.0));
}
var writer = device.StartTX(); // start tx stream
for (int i = 0; i < 10; i++)
{
writer.Write(buf, 0, 2000000); // send NFM signal to hackrf
System.Console.WriteLine($"Writing block #{i}...");
}
writer.Dispose(); // stop tx stream
System.Console.WriteLine("Press any key to close application");
System.Console.ReadKey();
}
static public void Main(string[] args)
{
System.Console.WriteLine(NetHackrf.HackrfLibraryVersion());
System.Console.WriteLine(NetHackrf.HackrfLibraryRelease());
var devices = NetHackrf.HackrfDeviceList();
foreach (var i in devices)
{
System.Console.WriteLine($"serial=\"{i.serial_number}\", boardId=\"{i.usb_board_id}\", index={i.usb_device_index}");
}
if (devices.Length == 0)
{
System.Console.WriteLine("No hackrf devices were found");
System.Console.WriteLine("Press any key to close application");
System.Console.ReadKey();
return;
}
NetHackrf device = devices[0].OpenDevice();
System.Console.WriteLine(device.HackrfVersion);
System.Console.WriteLine(device.UsbApiVersion);
device.CarrierFrequencyMHz = 444.0;
device.SampleFrequencyMHz = 2;
device.FilterBandwidthMHz = 0.5;
device.TXVGAGainDb = 20;
byte[] buf = new byte[20000000];
double phase = 0;
for (int i = 0; i < buf.Length; i += 2)
{
double signal = 50.0 * Math.Sin((double)i / 4000.0 * Math.PI * 2.0);
phase += signal * 0.0001;
buf[i] = (byte)((sbyte)(Math.Sin(phase) * 120.0));
buf[i + 1] = (byte)((sbyte)(Math.Cos(phase) * 120.0));
}
var writer = device.StartTX();
for (int i = 0; i < 10; i++)
{
writer.Write(buf, 0, 2000000);
System.Console.WriteLine($"Writing block #{i}...");
}
writer.Dispose();
System.Console.WriteLine("Press any key to close application");
System.Console.ReadKey();
}