when I open a serial port, why the matlab is always busy?

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wenlong
wenlong el 28 de Abr. de 2017
I'm using Matlab R2015b, I set the serial as following: s = serial('COM3', 'BaudRate', 115200) then I using fopen(s) to open the serial port, but the status is always busy? I did it in command line Thanks!

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