Analog Discovery 2 Communicates with Arduino

Recently, for a project I was doing, I wanted to use the Analog Discovery 2 to help intelligently interpret live audio and send the data to LED strips controlled by an Arduino. However, in order to do this, I would need WaveForms to have some way to talk to the Arduino. After exploring some options on my own, I turned to the Digilent Forum and posted the following question.

Before I knew it I had a solution proposed to me by attila, a Technical Forum Moderator and WaveForms software developer. He suggested using the Python libraries in WaveForms SDK by doing the following:

You could use the WaveForms SDK. Starting with the AnalogIn_Record_int16.py or AnalogIn_Record.py example script and modifying it to send the data chunks from the record loop to the desired protocol (like COM), or using the device DIO (see Digital_Spi.py, Digital_Uart.py, Digital_I2c.py)
The examples are located in the following path: C:/Program Files (x86)/Digilent/WaveFormsSDK/samples/py/

He also suggested that I could also send acquisition data over SPI with a custom script in the script editor like the one shown below:

Scope1.run()
while(Scope1.wait()){
    var rg16 = []
    var r = Scope1.Channel1.Range.value
    var o = Scope1.Channel1.Offset.value
    // convert float to 16bit integer
    Scope1.Channel1.alldata.forEach(function(v){
        rg16.push(max(-32768, min(32767, v*32768/r+o)))
    })
    Protocol.SPI.Start()
    if(!Protocol.SPI.Write(16, rg16)) break
    Protocol.SPI.Stop()
}

For the design I am working on, this communication is essential, as I am basically using the Analog Discovery 2 as an advanced sound sensor. Since my current setup involves manipulating the data from WaveForms in the Arduino IDE, I am going to experiment with attila’s suggested option of using the AnalogIn_Record example scripts to send to the COM port that the Arduino is on.

Stay tuned for updates on this project as well as how to use the Analog Discovery 2 with Arduino!

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