add app for testing purposes, fix import in grc

apps/fm_receiver.grc

+options:
+  parameters:
+    author: ''
+    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: fm_receiver
+    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: Not titled yet
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 8]
+    rotation: 0
+    state: enabled
+
+blocks:
+- name: cutoff
+  id: variable
+  parameters:
+    comment: ''
+    value: 100e3
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [312, 4.0]
+    rotation: 0
+    state: true
+- name: freq
+  id: variable
+  parameters:
+    comment: ''
+    value: 102.2e6
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [592, 12.0]
+    rotation: 0
+    state: true
+- name: samp_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: 2e6
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [184, 12]
+    rotation: 0
+    state: enabled
+- name: transition
+  id: variable
+  parameters:
+    comment: ''
+    value: 1e6
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [464, 12.0]
+    rotation: 0
+    state: true
+- name: volume
+  id: variable_qtgui_range
+  parameters:
+    comment: ''
+    gui_hint: ''
+    label: ''
+    min_len: '200'
+    orient: QtCore.Qt.Horizontal
+    rangeType: float
+    start: '0'
+    step: '1'
+    stop: '100'
+    value: '1'
+    widget: counter_slider
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [776, 84.0]
+    rotation: 0
+    state: true
+- name: analog_wfm_rcv_0
+  id: analog_wfm_rcv
+  parameters:
+    affinity: ''
+    alias: ''
+    audio_decimation: '1'
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    quad_rate: 500e3
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [568, 196.0]
+    rotation: 0
+    state: true
+- name: audio_sink_0
+  id: audio_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    device_name: ''
+    num_inputs: '1'
+    ok_to_block: 'True'
+    samp_rate: '48000'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1264, 268.0]
+    rotation: 0
+    state: true
+- name: bladeRF_source_0
+  id: bladeRF_source
+  parameters:
+    affinity: ''
+    alias: ''
+    args: '""'
+    bb_gain0: '20'
+    bb_gain1: '20'
+    bias_tee0: 'False'
+    bias_tee1: 'False'
+    bw0: '200000'
+    bw1: '200000'
+    comment: ''
+    corr0: '0'
+    corr1: '0'
+    dac: '10000'
+    dc_offset_mode0: '0'
+    dc_offset_mode1: '0'
+    fpga_image: ''
+    freq0: freq
+    freq1: 1e8
+    gain0: '10'
+    gain1: '10'
+    gain_mode0: 'False'
+    gain_mode1: 'False'
+    if_gain0: '20'
+    if_gain1: '20'
+    in_clk: ONBOARD
+    iq_balance_mode0: '0'
+    iq_balance_mode1: '0'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    nchan: '1'
+    out_clk: 'False'
+    power_monitoring: 'False'
+    ref_clk: ''
+    sample_rate: samp_rate
+    type: fc32
+    xb_2000: 222M
+    xb_2001: auto
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [56, 116.0]
+    rotation: 0
+    state: true
+- name: blocks_multiply_const_vxx_0
+  id: blocks_multiply_const_vxx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    const: volume
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    type: float
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1056, 268.0]
+    rotation: 0
+    state: true
+- name: low_pass_filter_0
+  id: low_pass_filter
+  parameters:
+    affinity: ''
+    alias: ''
+    beta: '6.76'
+    comment: ''
+    cutoff_freq: cutoff
+    decim: '1'
+    gain: '1'
+    interp: '1'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samp_rate: samp_rate
+    type: fir_filter_ccf
+    width: transition
+    win: window.WIN_HAMMING
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [352, 148.0]
+    rotation: 0
+    state: true
+- name: rational_resampler_xxx_0
+  id: rational_resampler_xxx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    decim: '500'
+    fbw: '0'
+    interp: '48'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    taps: '[]'
+    type: fff
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [800, 276.0]
+    rotation: 0
+    state: true
+
+connections:
+- [analog_wfm_rcv_0, '0', rational_resampler_xxx_0, '0']
+- [bladeRF_source_0, '0', low_pass_filter_0, '0']
+- [blocks_multiply_const_vxx_0, '0', audio_sink_0, '0']
+- [low_pass_filter_0, '0', analog_wfm_rcv_0, '0']
+- [rational_resampler_xxx_0, '0', blocks_multiply_const_vxx_0, '0']
+
+metadata:
+  file_format: 1

grc/gen_bladerf_blocks.py

@@ -105,7 +105,7 @@ outputs:
 
 templates:
   imports: |-
-     import bladerf
+     import bladeRF
      import time
   make: |
     bladerf.${sourk}(