How can I run matlab connected to arduino more than once?
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hamzah alamoodi
le 20 Déc 2015
Commenté : Hakki Eren Uzunyayla
le 17 Juin 2019
I have a problem with connecting my arduino uno to matlab.. It actually runs perfectly for the first time but when I run it again it says this (Failed to open serial port COM4 to communicate with Arduino board Uno. Make sure there is no other MATLAB arduino object for this board. For troubleshooting, see Arduino Hardware Troubleshooting.
.. I'm using this command to connect: a = arduino('com4','uno') ..
If anyone can help here I would appreciate it ...
2 commentaires
Sumit Banerjee
le 10 Mai 2016
You have to delete the object which you have created. For example, if you have this object arduino_board = arduino(port, board, 'Libraries', 'Servo'); then you have to delete this object in the end of the code, i.e. clear arduino_board; all the objects which you have created like this should be cleared.
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Esther
le 21 Déc 2015
Are you running the connect command
a = arduino('com4','uno')
a second time while object 'a' still exists in the workspace? You only need to connect once.
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Sadi Mohammad Rifat
le 18 Juin 2017
All you have to write a command "clear all" on the first line of your code . That's it.
1 commentaire
Sumit Banerjee
le 10 Mai 2016
You have to delete the object which you have created. For example, if you have this object arduino_board = arduino(port, board, 'Libraries', 'Servo'); then you have to delete this object in the end of the code, i.e. clear arduino_board; all the objects which you have created like this should be cleared.
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