update tx

.gitignore

@@ -32,6 +32,7 @@ bld/
 [Oo]ut/
 [Ll]og/
 [Ll]ogs/
+Archive/
 
 # Visual Studio 2015/2017 cache/options directory
 .vs/

.visualgdb/CodeDB/SoapyHifiBerry-Release-VisualGDB/codedb.lck

@@ -1 +1 @@
-This file was last opened by PID 19252
+This file was last opened by PID 19364

AudioOutput.cpp

@@ -8,10 +8,11 @@
  * A underrun counter is increased for adjusting samplerate of the radio
  **/
 
+const int audio_buffer_size{2024};
 
 int Audioout( void *outputBuffer,void *inputBuffer,unsigned int nBufferFrames,double streamTime,RtAudioStreamStatus status,	void *userData)
 {
-	double *buffer = (double *) outputBuffer;
+	IQSample *buffer = (IQSample *) outputBuffer;
 
 	if (status)
 		std::cout << "Stream underflow detected!\n" << std::endl;
@@ -21,7 +22,7 @@ int Audioout( void *outputBuffer,void *inputBuffer,unsigned int nBufferFrames,do
 	{
 		for (int i = 0; i < nBufferFrames; i++)
 		{
-			((IQSample *)buffer)[i] = 0.0;
+			buffer[i] = IQSample(0,0);
 		}
 		return 0;
 	}
@@ -86,7 +87,7 @@ AudioOutput::AudioOutput(int pcmrate, DataBuffer<IQSample> *AudioBuffer, RtAudio
 {
 	m_sampleRate = pcmrate;
 	databuffer = AudioBuffer;
-	bufferFrames = 1024;
+	bufferFrames = audio_buffer_size;
 	parameters.nChannels = 2;
 	parameters.firstChannel = 0;
 	parameters.deviceId = 0;
@@ -126,7 +127,7 @@ bool AudioOutput::open(std::string device)
 	alsa_device = parameters.deviceId - 1;
 	parameters.nChannels = info.outputChannels;
 	printf("audio device = %d %s samplerate %d channels %d\n", parameters.deviceId, device.c_str(), m_sampleRate, parameters.nChannels);
-	err = this->openStream(&parameters, NULL, RTAUDIO_FLOAT64, m_sampleRate, &bufferFrames, &Audioout, (void *)databuffer, NULL);
+	err = this->openStream(&parameters, NULL, RTAUDIO_FLOAT32, m_sampleRate, &bufferFrames, &Audioout, (void *)databuffer, NULL);
 	if (err != RTAUDIO_NO_ERROR)
 	{
 		printf("Cannot open audio output stream\n");

AudioOutput.h

@@ -11,6 +11,8 @@
 #include "Audiodefs.h"
 #include "DataBuffer.h"
 
+extern const int audio_buffer_size;
+
 class AudioOutput :
     public RtAudio
 {

SoapyHifiBerrySettings.cpp

@@ -75,7 +75,7 @@ SoapyHifiBerry::SoapyHifiBerry(const SoapySDR::Kwargs &args)
 	pSI5351->drive_strength(CLK_VFO_RX, SI5351_DRIVE_2MA);
 	pSI5351->drive_strength(CLK_VFO_TX, SI5351_DRIVE_2MA);
 	pSI5351->output_enable(CLK_VFO_RX, 1);
-	pSI5351->output_enable(CLK_VFO_TX, 0);
+	pSI5351->output_enable(CLK_VFO_TX, 1);
 	pSI5351->output_enable(CLK_NA, 0);
 	pSI5351->set_freq(2916800000ULL, CLK_VFO_RX);
 	pSI5351->update_status();

SoapyHifiBerryStreaming.cpp

@@ -170,6 +170,7 @@ int SoapyHifiBerry::readStream(
 	return (nr_samples); //return the number of IQ samples
 }
 
+IQSampleVector iqsamples;
 
 int SoapyHifiBerry::writeStream(SoapySDR::Stream *handle, const void *const *buffs, const size_t numElems, int &flags, const long long timeNs, const long timeoutUs)
 {
@@ -179,15 +180,15 @@ int SoapyHifiBerry::writeStream(SoapySDR::Stream *handle, const void *const *buf
 	void const *buff_base = buffs[0];
 	IQSample *target_buffer = (IQSample *)buff_base;
 	sdr_stream *ptr = (sdr_stream *)handle;
-	IQSampleVector iqsamples;
 
 	if (ptr->get_stream_format() == HIFIBERRY_SDR_CF32)
 	{
 		for (int i = 0; i < numElems; i++)
 		{
 			iqsamples.push_back(target_buffer[i]);
+			if (iqsamples.size() == audio_buffer_size)
+				uptr_audiooutput->write(iqsamples);
 		}
-		uptr_audiooutput->write(iqsamples);
 	}
 	return numElems;
 }