diff options
| author | Clayton Smith <argilo@gmail.com> | 2020-10-12 09:09:43 -0400 |
|---|---|---|
| committer | mormj <34754695+mormj@users.noreply.github.com> | 2020-10-20 08:40:31 -0400 |
| commit | 629d8854863ab9ea782d0c0d648f525ed5d4c71b (patch) | |
| tree | 7fba59da700a1080c2f259abbb33a9c184a0b9a7 /gr-vocoder/examples | |
| parent | a61c0c32b92dad34d4c1dda77064f36ce2780fcf (diff) | |
vocoder: add text message output to FreeDV demodulator
The FreeDV protocol includes a low bit rate text stream which is used to
transmit information such as call sign and location. GNU Radio's FreeDV
demodulator block sets up a callback to receive this text data, but the
callback currently does nothing.
Here I've added an optional message output to the block. It collects
characters until a carriage return is encountered, then outputs a
string. I've updated the sample flow graph to print these messages using
the Message Debug block.
Diffstat (limited to 'gr-vocoder/examples')
| -rw-r--r-- | gr-vocoder/examples/grfreedv.grc | 71 |
1 files changed, 59 insertions, 12 deletions
diff --git a/gr-vocoder/examples/grfreedv.grc b/gr-vocoder/examples/grfreedv.grc index 25865df36c..5bb41d2b84 100644 --- a/gr-vocoder/examples/grfreedv.grc +++ b/gr-vocoder/examples/grfreedv.grc @@ -1,6 +1,7 @@ options: parameters: author: A. Maitland Bottoms + catch_exceptions: 'True' category: Custom cmake_opt: '' comment: '' @@ -22,9 +23,11 @@ options: sizing_mode: fixed thread_safe_setters: '' title: GNU Radio FreeDV - window_size: '' states: - coordinate: [8, 8] + bus_sink: false + bus_source: false + bus_structure: null + coordinate: [8, 4.0] rotation: 0 state: enabled @@ -35,7 +38,10 @@ blocks: comment: '' value: '8000' states: - coordinate: [8, 160] + bus_sink: false + bus_source: false + bus_structure: null + coordinate: [8, 164.0] rotation: 0 state: enabled - name: squelch @@ -45,7 +51,7 @@ blocks: gui_hint: '' label: squelch slider min_len: '256' - orient: Qt.Horizontal + orient: QtCore.Qt.Horizontal rangeType: float start: '-127' step: '1' @@ -53,7 +59,10 @@ blocks: value: '-120' widget: counter_slider states: - coordinate: [232, 16] + bus_sink: false + bus_source: false + bus_structure: null + coordinate: [184, 4.0] rotation: 0 state: enabled - name: audio_sink_0 @@ -67,7 +76,10 @@ blocks: ok_to_block: 'True' samp_rate: samp_rate states: - coordinate: [1152, 220.0] + bus_sink: false + bus_source: false + bus_structure: null + coordinate: [1192, 204.0] rotation: 0 state: enabled - name: audio_source_0 @@ -83,6 +95,9 @@ blocks: ok_to_block: 'True' samp_rate: '48000' states: + bus_sink: false + bus_source: false + bus_structure: null coordinate: [8, 300.0] rotation: 0 state: enabled @@ -97,9 +112,25 @@ blocks: scale: '32768' vlen: '1' states: - coordinate: [456, 220.0] + bus_sink: false + bus_source: false + bus_structure: null + coordinate: [416, 220.0] rotation: 0 state: enabled +- name: blocks_message_debug_0 + id: blocks_message_debug + parameters: + affinity: '' + alias: '' + comment: '' + states: + bus_sink: false + bus_source: false + bus_structure: null + coordinate: [1104, 288.0] + rotation: 0 + state: true - name: blocks_short_to_float_0 id: blocks_short_to_float parameters: @@ -111,7 +142,10 @@ blocks: scale: '32768' vlen: '1' states: - coordinate: [1008, 220.0] + bus_sink: false + bus_source: false + bus_structure: null + coordinate: [1024, 204.0] rotation: 0 state: enabled - name: blocks_wavfile_source_0 @@ -126,7 +160,10 @@ blocks: nchan: '1' repeat: 'True' states: - coordinate: [120, 164.0] + bus_sink: false + bus_source: false + bus_structure: null + coordinate: [176, 164.0] rotation: 0 state: disabled - name: rational_resampler_xxx_0 @@ -143,7 +180,10 @@ blocks: taps: '' type: fff states: - coordinate: [232, 276.0] + bus_sink: false + bus_source: false + bus_structure: null + coordinate: [200, 276.0] rotation: 0 state: enabled - name: vocoder_freedv_rx_ss_0 @@ -159,7 +199,10 @@ blocks: squelch_enable: 'True' squelch_thresh: squelch states: - coordinate: [816, 196.0] + bus_sink: false + bus_source: false + bus_structure: null + coordinate: [808, 196.0] rotation: 0 state: enabled - name: vocoder_freedv_tx_ss_0 @@ -176,7 +219,10 @@ blocks: tx_bpf_val: 'True' txt_msg: '''GNU Radio''' states: - coordinate: [608, 188.0] + bus_sink: false + bus_source: false + bus_structure: null + coordinate: [584, 188.0] rotation: 0 state: enabled @@ -187,6 +233,7 @@ connections: - [blocks_wavfile_source_0, '0', blocks_float_to_short_0, '0'] - [rational_resampler_xxx_0, '0', blocks_float_to_short_0, '0'] - [vocoder_freedv_rx_ss_0, '0', blocks_short_to_float_0, '0'] +- [vocoder_freedv_rx_ss_0, text, blocks_message_debug_0, print] - [vocoder_freedv_tx_ss_0, '0', vocoder_freedv_rx_ss_0, '0'] metadata: |