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| 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/grc | |
| 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/grc')
| -rw-r--r-- | gr-vocoder/grc/vocoder_freedv_rx_ss.block.yml | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gr-vocoder/grc/vocoder_freedv_rx_ss.block.yml b/gr-vocoder/grc/vocoder_freedv_rx_ss.block.yml index b1ec5339e6..31f88b3224 100644 --- a/gr-vocoder/grc/vocoder_freedv_rx_ss.block.yml +++ b/gr-vocoder/grc/vocoder_freedv_rx_ss.block.yml @@ -29,6 +29,9 @@ inputs: outputs: - domain: stream dtype: short +- domain: message + id: text + optional: true templates: imports: |- |