Using a rotary encoder with arduino mega and MATLAB

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Derick Ghoda
Derick Ghoda 2017-7-28
编辑： Qais El-Bakaein 2018-1-17
I've tried to run the following example code I obtained from mathwoks website ( https://www.mathworks.com/help/supportpkg/arduinoio/ref/rotaryencoder.html ). I get the following error when I try to create a rotary encoder object:
>> a = arduino('COM4','Uno','Libraries','rotaryEncoder');
Invalid value 'rotaryEncoder' for Libraries. Valid libraries are
'Adafruit/MotorShieldV2, I2C, SPI, Servo, ShiftRegister'.
Do I need to install something in order to use the rotary encoder library, if so what library should I install ? I've already installed the MATLAB and SIMULINK support packages for arduino. Thanks in advance for your help.
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Derick Ghoda
Derick Ghoda 2017-8-2
Thanks for your response, I never really understood where such an error was coming from until I was able to get my hands on R2017a.
Qais El-Bakaein
Qais El-Bakaein 2018-1-17
编辑：Qais El-Bakaein 2018-1-17
Hey, i have the same problem and I have R2017b, what could the problem be? thanks

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Akhilesh Thakur
Akhilesh Thakur 2017-7-31
This feature is introduced in R2017a. Check the version. If you are unable to do that check this link https://www.mathworks.com/help/supportpkg/arduinoio/quadrature-encoders.html. You need to go through this there are sample examples that can help you.
Best Akhilesh

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