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Running an Audio Sketch on the Desktop
Sometimes it is just to tedious to deploy and test a sketch on a Microcontroller - specially when you don't have all the wires of your hardware connected or expect to run thru many validation cycles.
This project can also be used to output the sound on Linux, Windows and OS/X.
You just need to provide an Arduino Sketch together with this CMakeLists.txt file. Just replace the example generator.ino with your sketch file in the add_executable line.
In your sketch you can use the PortAudioStream class which uses PortAudio to input or output audio.
Alternatively you can also use the StdioStream class to input or output data (in Linux or OS/X) together with pipes: e.g. ./generator | aplay -f cd is playing the output of the generator with the help of the aplay command.
You can also use the header only MiniAudioStream.
The CMakeLists.txt file automatically downloads all dependencies (including the arduino-audio-tools project).
You can build the executable with:
mkdir build
cd build
cmake ..
make
A full example can be found in the examples-desktop directory: e.g. generator
If you intend to debug, please use cmake -DCMAKE_BUILD_TYPE=Debug .. instead.
The example above is automatically using the Arduino-Emulator which pretty much makes the full Arduino functionality available on the desktop as well.
If you prefer to have a lean implementation w/o the Arduino functionality you can deactivate the Emulator. Here is a minimum example w/o emulator.
We support different output libraries:
You can also decide not to use any Audio Library and just output the sound data to Standard Output
I am using PipeWire under Linux: After installing pipewire I recommend to make sure that we have some additional header files:
sudo apt install libasound2-dev libjack-jackd2-dev