fixed update sources

software/gr-caribouLite/examples/read_samples.grc

@@ -0,0 +1,144 @@
+options:
+  parameters:
+    author: Alon and David
+    catch_exceptions: 'True'
+    category: '[GRC Hier Blocks]'
+    cmake_opt: ''
+    comment: ''
+    copyright: ''
+    description: ''
+    gen_cmake: 'On'
+    gen_linking: dynamic
+    generate_options: qt_gui
+    hier_block_src_path: '.:'
+    id: cariboulite_source_test
+    max_nouts: '0'
+    output_language: python
+    placement: (0,0)
+    qt_qss_theme: ''
+    realtime_scheduling: ''
+    run: 'True'
+    run_command: '{python} -u {filename}'
+    run_options: prompt
+    sizing_mode: fixed
+    thread_safe_setters: ''
+    title: ''
+    window_size: ''
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [16, 4]
+    rotation: 0
+    state: enabled
+
+blocks:
+- name: caribouLite_caribouLiteSource_0
+  id: caribouLite_caribouLiteSource
+  parameters:
+    affinity: ''
+    alias: ''
+    channel: '0'
+    comment: ''
+    enable_agc: 'False'
+    freq: '900000000.0'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    rx_bw: '2500000.0'
+    rx_gain: '40.0'
+    sample_rate: '4000000.0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [296, 212.0]
+    rotation: 0
+    state: enabled
+- name: qtgui_freq_sink_x_0
+  id: qtgui_freq_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    average: '1.0'
+    axislabels: 'True'
+    bw: 4e6
+    color1: '"blue"'
+    color10: '"dark blue"'
+    color2: '"red"'
+    color3: '"green"'
+    color4: '"black"'
+    color5: '"cyan"'
+    color6: '"magenta"'
+    color7: '"yellow"'
+    color8: '"dark red"'
+    color9: '"dark green"'
+    comment: ''
+    ctrlpanel: 'False'
+    fc: '0'
+    fftsize: '1024'
+    freqhalf: 'True'
+    grid: 'False'
+    gui_hint: ''
+    label: Relative Gain
+    label1: ''
+    label10: ''''''
+    label2: ''''''
+    label3: ''''''
+    label4: ''''''
+    label5: ''''''
+    label6: ''''''
+    label7: ''''''
+    label8: ''''''
+    label9: ''''''
+    legend: 'True'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    name: '""'
+    nconnections: '1'
+    norm_window: 'False'
+    showports: 'False'
+    tr_chan: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_tag: '""'
+    type: complex
+    units: dB
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    wintype: window.WIN_BLACKMAN_hARRIS
+    ymax: '10'
+    ymin: '-140'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [656, 236.0]
+    rotation: 0
+    state: enabled
+
+connections:
+- [caribouLite_caribouLiteSource_0, '0', qtgui_freq_sink_x_0, '0']
+
+metadata:
+  file_format: 1
+  grc_version: v3.11.0.0git-604-gd7f88722

software/gr-caribouLite/lib/caribouLiteSource_impl.cc

@@ -67,6 +67,9 @@ namespace gr {
             _radio->SetRxBandwidth(rx_bw);
             _radio->SetRxSampleRate(sample_rate);
             _radio->SetFrequency(freq);
+            
+            //do the thing
+            _radio->StartReceiving();
         }
 
         // virtual destructor
@@ -82,8 +85,7 @@ namespace gr {
                                         gr_vector_void_star &output_items)
         {
             auto out = static_cast<output_type*>(output_items[0]);
-            _radio->ReadSamples(out, static_cast<size_t>(noutput_items));            
-            return noutput_items;
+            return _radio->ReadSamples(out, static_cast<size_t>(noutput_items));            
         }
 
     } /* namespace caribouLite */