اتصال آردینو لئوناردو به نرم افزار متلب

[rasool]

سلام من پکیج آردینو رو روی متلب نصب کردم و این ارور رو دارم میشه راهنماییم کنید:
a =arduino('COM3')
Attempting connection .............
Warning: Unsuccessful read: A timeout occurred before the Terminator was reached..
Error using arduino (line 104)
Connection unsuccessful, please make sure that the board is powered on, running a sketch provided with the package, and connected to the indicated serial port. You
might also try to unplug and re-plug the USB cable before attempting a reconnection.

[magmagmary]

اره پورت کامت رو نمیتونه باز کنه

Arduino Playground - Matlab

Arduino Interface with MATLAB

با روش این دو تا لینک پورت کام رو باز کن