HackRF: open device by serial number

devices/hackrf/devicehackrf.cpp

@@ -33,6 +33,33 @@ hackrf_device *DeviceHackRF::open_hackrf(int sequence)
     return open_hackrf_from_sequence(sequence);
 }
 
+hackrf_device *DeviceHackRF::open_hackrf(const char * const serial)
+{
+    hackrf_error rc;
+
+    // TODO: this may not work if several HackRF Devices are running concurrently. It should be handled globally in the application
+    rc = (hackrf_error) hackrf_init();
+
+    if (rc != HACKRF_SUCCESS)
+    {
+        fprintf(stderr, "DeviceHackRF::open_hackrf: failed to initiate HackRF library %s\n", hackrf_error_name(rc));
+        return 0;
+    }
+
+    hackrf_device *hackrf_ptr;
+
+    rc = (hackrf_error) hackrf_open_by_serial(serial, &hackrf_ptr);
+
+    if (rc == HACKRF_SUCCESS)
+    {
+        return hackrf_ptr;
+    }
+    else
+    {
+        return 0;
+    }
+}
+
 hackrf_device *DeviceHackRF::open_hackrf_from_sequence(int sequence)
 {
     hackrf_device_list_t *hackrf_devices = hackrf_device_list();

devices/hackrf/devicehackrf.h

@@ -23,6 +23,7 @@ class DeviceHackRF
 {
 public:
     static hackrf_device *open_hackrf(int sequence);
+    static hackrf_device *open_hackrf(const char * const serial);
 private:
     static hackrf_device *open_hackrf_from_sequence(int sequence);
 };

plugins/samplesink/hackrfoutput/hackrfoutput.cpp

@@ -60,7 +60,6 @@ bool HackRFOutput::openDevice()
     }
 
     m_sampleSourceFifo.resize(m_settings.m_devSampleRate/(1<<(m_settings.m_log2Interp <= 4 ? m_settings.m_log2Interp : 4)));
-    int device = m_deviceAPI->getSampleSinkSequence();
 
     if (m_deviceAPI->getSourceBuddies().size() > 0)
     {
@@ -84,9 +83,9 @@ bool HackRFOutput::openDevice()
     }
     else
     {
-        if ((m_dev = DeviceHackRF::open_hackrf(device)) == 0)
+        if ((m_dev = DeviceHackRF::open_hackrf(qPrintable(m_deviceAPI->getSampleSinkSerial()))) == 0)
         {
-            qCritical("HackRFOutput::openDevice: could not open HackRF #%d", device);
+            qCritical("HackRFOutput::openDevice: could not open HackRF %s", qPrintable(m_deviceAPI->getSampleSinkSerial()));
             return false;
         }
 

plugins/samplesource/hackrfinput/hackrfinput.cpp

@@ -65,8 +65,6 @@ bool HackRFInput::openDevice()
         return false;
     }
 
-    int device = m_deviceAPI->getSampleSourceSequence();
-
     if (m_deviceAPI->getSinkBuddies().size() > 0)
     {
         DeviceSinkAPI *buddy = m_deviceAPI->getSinkBuddies()[0];
@@ -89,9 +87,9 @@ bool HackRFInput::openDevice()
     }
     else
     {
-        if ((m_dev = DeviceHackRF::open_hackrf(device)) == 0)
+        if ((m_dev = DeviceHackRF::open_hackrf(qPrintable(m_deviceAPI->getSampleSourceSerial()))) == 0)
         {
-            qCritical("HackRFInput::openDevice: could not open HackRF #%d", device);
+            qCritical("HackRFInput::openDevice: could not open HackRF %s", qPrintable(m_deviceAPI->getSampleSourceSerial()));
             return false;
         }