How can i interact with embedded hardware through com port in app designer

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Kulbir 2023-4-20

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https://ww2.mathworks.cn/matlabcentral/answers/1950623-how-can-i-interact-with-embedded-hardware-through-com-port-in-app-designer

回答： Rijuta 2023-5-18

PLEASE HELP ME HOW TO read save and plot real time adui signal in app designer.. i need to make a gui

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dpb 2023-4-21

Learn how to control the device from the command line first to send/recieve data from the device. Then wrap that code in the GUI. They're two totally separate things, really...

Kulbir 2023-5-3

hi @dpb

i can communicate with the device in command line. not able to plot live data in graph.

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Answer 1

Rijuta 2023-5-18

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Hi Kulbir,

I understand that you want to read, save, and plot real-time audio signals in MATLAB App Designer. Please follow the steps below:

Start by designing your GUI in MATLAB's App Designer. You can refer the documentation.
In the App Designer, create a callback function for the "Start" button. Inside the callback function, use the ‘audioDeviceReader’ function from the Audio System Toolbox to configure the audio device and start reading audio data.
Add a "Stop" button to your GUI, along with its corresponding callback function. Inside the "Stop" button callback, stop the audio device to halt the data acquisition.
If you want to save the acquired audio data, you can modify the code to write the data to a file using MATLAB's 'udiowrite'function. Create a file writer object and write the audio data inside the while loop.
To update the GUI during real-time data acquisition, use the 'drawnow'function inside the while loop to ensure the GUI components are refreshed.