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Topic: strange error (Read 829 times) previous topic - next topic

popyd

My arduino uno was working fine until I just tried to upload a program. The error message "PORT 4 Is ALREADY BEING USED" appeared. I then reset the arduino, unplugged it, and re- connected it to port 1, this time the error avrdude: stk500_getsync(): not in sync: resp=0x00 appeared, please help,
                                                                                                                               Thanks

CWashburn

Do you have any other programs running that are using that port? Occasionally, for some unknown reason I am not able to explain, when I try to upload a new program, it displays "Serial port COM4 not found. Did you select the right one from the Tools > Serial Port menu?". I then plug the usb cable into a different port, and it uploads fine. I have an uno and a nano, and when I accidentally try to upload a uno program to a nano or vice versa, it will tell me it's not in sync, so check that your board matches the one in the Tools > Board menu.

rcorr

I'm willing to bet you have more than one IDE (Arduino download software) running at a time, and they are conflicting at the USB port.  Using the serial monitor and leaving it open might not help either.

Just something to look at.

Robert

popyd

I tried re-starting my computer, opening one arduino IDE, re-selecting arduino uno, switching cables to a different serial port, (and telling my computer that I did that), resetting my arduino, and never opening the aerial monitor, with no avail. btw, I am using 32bit windows XP

popyd

its ok, i solved the problem!
:-)

weedpharma

And what was the problem???


Weedpharma

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