Matlab - Arduino Communicate --> Open failed: Port: COM6 is not available. No ports are available

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Arif Emre DEMIR 2021-5-2

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https://ww2.mathworks.cn/matlabcentral/answers/819440-matlab-arduino-communicate-open-failed-port-com6-is-not-available-no-ports-are-available

评论： Rohan Kale 2021-5-6

Hi , everyone I need your helps.

I am working on a project that reqiured matlab-arduino communicate. But ı took a weird error and ı didnt solve it.

Error :

Error using serial/fopen (line 72)

Open failed: Port: COM6 is not available. No ports are available.

Use INSTRFIND to determine if other instrument objects are connected to the requested device.

Error in Arduino (line 3)

fopen(s1);

when ı take this error. my arduino is connected to the COM6 but my matlab serial port says me it doesnt connect the COM6. thing that is weird, when ı started the matlab for the first , it working nice but when ı tried run the same script for second or third, it doesn't work . I mean ı take this error.

Please help me :/ it is so weird error. I haven't found it yet.