public unsafe void Start()
{
if (NativeMethods.LMS_Open(out _device, null, null) != 0)
{
throw new ApplicationException("Cannot open LimeSDR device. Is the device locked somewhere?");
}
NativeMethods.LMS_Init(_device);
if (NativeMethods.LMS_EnableChannel(_device, LMS_CH_RX, _channel, true) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
if (NativeMethods.LMS_SetAntenna(_device, LMS_CH_RX, _channel, _ant) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
this.SampleRate = _sampleRate;
this.Frequency = (long)_centerFrequency;
if (NativeMethods.LMS_SetGaindB(_device, LMS_CH_RX, _channel, _gain) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
lms_stream_t streamId = new lms_stream_t();
streamId.handle = 0;
streamId.channel = _channel; //channel number
streamId.fifoSize = 128 * 1024; //fifo size in samples
streamId.throughputVsLatency = 1.0f; //optimize for max throughput
streamId.isTx = false; //RX channel
streamId.dataFmt = dataFmt.LMS_FMT_F32;
_stream = Marshal.AllocHGlobal(Marshal.SizeOf(streamId));
Marshal.StructureToPtr(streamId, _stream, false);
if (NativeMethods.LMS_SetupStream(_device, _stream) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
if (NativeMethods.LMS_StartStream(_stream) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
_sampleThread = new Thread(ReceiveSamples_sync);
_sampleThread.Name = "limesdr_samples_rx";
_sampleThread.Priority = ThreadPriority.Highest;
_isStreaming = true;
_sampleThread.Start();
}
public unsafe void Start(uint ch, double lpbw, double gain, uint ant, double sr, float specOffset)
{
_ant = ant;
_channel = ch;
_lpbw = lpbw;
_gain = (uint)gain;
_sampleRate = sr;
SpectrumOffset = specOffset;
NativeMethods.LMS_Init(_device);
if (NativeMethods.LMS_EnableChannel(_device, LMS_CH_RX, _channel, true) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
if (NativeMethods.LMS_SetAntenna(_device, LMS_CH_RX, _channel, _ant) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
this.SampleRate = _sampleRate;
if (SampleRate < 384000)
{
if (NativeMethods.LMS_SetSampleRateDir(_device, LMS_CH_RX, SampleRate, 32) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
}
else
{
if (SampleRate > 32000000)
{
if (NativeMethods.LMS_SetSampleRateDir(_device, LMS_CH_RX, SampleRate, 0) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
}
else if (SampleRate > 16000000)
{
if (NativeMethods.LMS_SetSampleRateDir(_device, LMS_CH_RX, SampleRate, 4) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
}
else if (SampleRate > 8000000)
{
if (NativeMethods.LMS_SetSampleRateDir(_device, LMS_CH_RX, SampleRate, 8) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
}
else if (SampleRate > 4000000)
{
if (NativeMethods.LMS_SetSampleRateDir(_device, LMS_CH_RX, (double)(SampleRate), 16) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
}
else if (SampleRate > 2000000)
{
if (NativeMethods.LMS_SetSampleRateDir(_device, LMS_CH_RX, SampleRate, 32) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
}
else
{
if (NativeMethods.LMS_SetSampleRateDir(_device, LMS_CH_RX, SampleRate, 32) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
}
}
if (NativeMethods.LMS_SetGaindB(_device, LMS_CH_RX, _channel, _gain) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
LPBW = _lpbw;
lms_stream_t streamId = new lms_stream_t();
streamId.handle = 0;
streamId.channel = _channel; //channel number
streamId.fifoSize = 16 * 1024; //fifo size in samples
streamId.throughputVsLatency = 0.5f; //balance
streamId.isTx = false; //RX channel
streamId.dataFmt = dataFmt.LMS_FMT_F32;
_stream = Marshal.AllocHGlobal(Marshal.SizeOf(streamId));
Marshal.StructureToPtr(streamId, _stream, false);
if (NativeMethods.LMS_SetupStream(_device, _stream) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
if (NativeMethods.LMS_StartStream(_stream) != 0)
{
throw new ApplicationException(NativeMethods.limesdr_strerror());
}
_isStreaming = true;
this.Frequency = (long)_centerFrequency;
_sampleThread = new Thread(ReceiveSamples_sync);
_sampleThread.Name = "limesdr_samples_rx";
_sampleThread.Priority = ThreadPriority.Highest;
_sampleThread.Start();
}
