53 lines
1.7 KiB
Markdown
53 lines
1.7 KiB
Markdown
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#### Composite CDC + UAC2 on Pico
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This example provides a composite CDC + UAC2 device on top of a Raspberry Pi
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Pico board.
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#### Use Cases
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- The CDC + UAC2 composite device happens to be important, especially in the
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amateur radio community.
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Modern radios (`rigs`) like Icom IC-7300 + IC-705 expose a sound card and a
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serial device (`composite device`) to the computer over a single USB cable.
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This allows for Audio I/O and CAT control over a single USB cable which is
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very convenient.
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By including and maintaining this example in TinyUSB repository, we enable
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the amateur radio community to build (`homebrew`) radios with similar
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functionality as the (expensive) commercial rigs.
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This PR is important in bridging this specific gap between the commercial
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rigs and homebrew equipment.
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- https://digirig.net/digirig-mobile-rev-1-9/ is a digital interface for
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interfacing radios (that lack an inbuilt digital interface) with computers.
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Digirig Mobile works brilliantly (is OSS!) and is a big improvement over
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traditional digital interfaces (like the SignaLink USB Interface). By using a
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Raspberry Pi Pico powered CDC + UAC2 composite device, we can simplify the
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Digirig Mobile schematic, drastically reduce the manufacturing cost, and
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(again) enable the homebrewers community to homebrew a modern digital interface
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with ease themselves.
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#### Build Steps
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```
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cd examples/device/cdc_uac2
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export PICO_SDK_PATH=$HOME/pico-sdk
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cmake -DFAMILY=rp2040 pico .
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cmake -DFAMILY=rp2040 -DCMAKE_BUILD_TYPE=Debug # use this for debugging
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make BOARD=raspberry_pi_pico all
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```
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#### Development Notes
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Please try to keep this code synchronized with the `uac2_headset` example
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included in this repository.
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