cannot open usb device permission denied

USB AVR Programmer and SPI interface. Adafruit's USBtinyISP.

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wms20
 
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Joined: Mon Feb 12, 2024 5:16 pm

cannot open usb device permission denied

Post by wms20 »

I am using an atmega328pb with minicore installed. My friend can upload to the atmega fine so I know its not a board issue. He used the same usb cord and programmer so those are not the issue either. avr dude shows it can find the port but just does not haver permission. Any help would be appreciated.
Screenshot 2024-04-02 174744.jpg
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aidanferry
 
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Re: cannot open usb device permission denied

Post by aidanferry »

I am having the exact same issue. ATMega328PB, usbtiny programmer, MiniCore, same error output. I wonder, did you ever figure this out?

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adafruit_support_carter
 
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Re: cannot open usb device permission denied

Post by adafruit_support_carter »

Check for 3rd party software that might be taking control of the COM port and preventing its usage in Arduino.

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