Undefined function 'writePosition' for input arguments of type 'double'

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Kin Sun Wong
Kin Sun Wong 2019-1-18
回答： amin ali 2021-9-11
Hi, I have followed the guide from this page (https://www.mathworks.com/help/supportpkg/arduinoio/ug/control-servo-motors.html) on how to set up the servo motor via Arduino on Matlab.
However, I keep getting the following the error message: Undefined function 'writePosition' for input arguments of type 'double'
This page (https://www.mathworks.com/help//supportpkg/arduinoio/ref/writeposition.html) states that the writePosition function can take in any numeric value from 0 to 1, but yet the error shows up.
Why is this happening?
My code is as shown below:
Screenshot 2019-01-18 at 1.58.11 PM.png
Thank you.
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回答（2 个）

madhan ravi
madhan ravi 2019-1-18
change
function interval(x)
to
function interval
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Kin Sun Wong
Kin Sun Wong 2019-1-18
Hi, thanks for the help so far.
I have reinstalled the package and the code is working again. Seems like some of the files got corrupted.

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amin ali
amin ali 2021-9-11
hello
can you help me

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