USBtiny Permissions in avrudude - Help!

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maglobal3603
 
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Joined: Thu Apr 19, 2018 1:51 pm

USBtiny Permissions in avrudude - Help!

Post by maglobal3603 »

Trying to bring a adafruit Trinket up on my RPI 3. Debian Jessie.

Using Arduino IDE 1.8.5.
Set Board, Programmer and ports according to Adafruit setup instructions.
When I try to load Blink...properly modified....I get the following errors.

avrdude: Warning: cannot open USB device: Permission denied
avrdude: Error: Could not find USBtiny device (0x1781/0xc9f)
avrdude: Error: Could not find USBtiny device (0x1781/0xc9f)

Spent a morning on web...cannot overcome this!

I have tried everything I could find on the web...including quick fixés to the device and updates in /etc/udev...

No avail....

Any ideas? What am I missing?
Thank you.

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maglobal3603
 
Posts: 2
Joined: Thu Apr 19, 2018 1:51 pm

Re: USBtiny Permissions in avrudude - Help!

Post by maglobal3603 »

While I can say I resolved it....I did somehow get it to work by adding my username to the dialout group that owns the /dev/ttyAMA0 usb.

So far so good!

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d0ugparker
 
Posts: 15
Joined: Fri Oct 29, 2010 9:47 am

Re: USBtiny Permissions in avrudude - Help!

Post by d0ugparker »

Cool. I've got the same problem here. Permissions on the /dev/ttyAMA0 usb. Sounds like Linux. Is it? I'm on Winners 7. Can anyone out there in Windows-land tell me what has to be done for an equivalent setting in Windows 7? Thanks.

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