Arduino Due DAC audio output problem

Question

Magnus Woodgate 2016-10-10

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/306633-arduino-due-dac-audio-output-problem

回答： Ankita Nargundkar 2016-10-20

Hi I have recently upgraded from an arduino UNO to a DUE and I'm now trying to use the DAC pins to output a chosen audio input (for the minute an audio file, but hopefully a connectable input after this is sorted).

At first an error would pop up saying "expected input type uint16 instead double was found" which I soon sorted using a converter block. However, now when using the converter, a lot more pops up on the error message screen (see image attached).

It's a very simple circuit connecting the DAC0 output to the positive of the speaker & the ground of the speaker to the ground of the DUE.

Any help would be greatly appreciated.

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Answer 1

Ankita Nargundkar 2016-10-20

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https://ww2.mathworks.cn/matlabcentral/answers/306633-arduino-due-dac-audio-output-problem#answer_239968

Try using the following command:

>> ls /dev/tty/*

You will get the list of all the Devices connected. For ex: if one of the devices listed is /dev/tty/usbmodemsd131'. Change the "port" argument to the correct port number. You should be able to connect to arduino.