Fix for above 3Mhz sample rate on LimeSDR-USB

This problem could also be present on other devices using the FX3 driver and is perhaps part of a larger general problem in the LMS7 Soapy module.
cjcliffe · Mar 9, 2019 · ed59937 · ed59937 · juribeparada · Mar 9, 2019
1 parent 94e252d
commit ed59937
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/src/sdr/SoapySDRThread.cpp b/src/sdr/SoapySDRThread.cpp
@@ -446,12 +446,18 @@ void SDRThread::updateSettings() {
     }
 
     if (rate_changed.load()) {
-
         device->setSampleRate(SOAPY_SDR_RX,0,sampleRate.load());
         // TODO: explore bandwidth setting option to see if this is necessary for others
         if (device->getDriverKey() == "bladeRF") {
             device->setBandwidth(SOAPY_SDR_RX, 0, sampleRate.load());
         }
+	// Fix for LimeSDR-USB not properly handling samplerate changes while device is 
+	// active.
+	else if (device->getHardwareKey() == "LimeSDR-USB") {
+	    std::cout << "SDRThread::updateSettings(): Force deactivate / activate limeSDR stream" << std::endl << std::flush;
+            device->deactivateStream(stream);
+	    device->activateStream(stream);
+        }
         sampleRate.store(device->getSampleRate(SOAPY_SDR_RX,0));
         numChannels.store(getOptimalChannelCount(sampleRate.load()));
         numElems.store(getOptimalElementCount(sampleRate.load(), TARGET_DISPLAY_FPS));