Could not find USBtiny device (0x1781/0xc9f)

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

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walkabout
 
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Joined: Tue Nov 12, 2013 5:47 am

Could not find USBtiny device (0x1781/0xc9f)

Post by walkabout »

I know... I know... A common problem.

I circumvented it by doing my development on a mac. No drivers needed... And no problems. I have been using avrdude with the adafruit AVR Pocket Programmer without a hitch (on a mac).

But "now" for a particular situation, I have to use PC to download precompiled *.hex file onto a Arduino UNO. I groaned going near a windows PC, because I could never get this to work before, and after hours of Googling for other nuggets from 100s of other people dealing with the same issue, I still could not get this resolved.

I downloaded the PC version from here: http://sourceforge.net/projects/winavr/

Any suggestions from anybody greated appreciated. :)

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adafruit_support_rick
 
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Joined: Tue Mar 15, 2011 11:42 am

Re: Could not find USBtiny device (0x1781/0xc9f)

Post by adafruit_support_rick »

Can't you use the Arduino bootloader?

What exactly is the problem? You can't get the USBtinyISP driver loaded?

walkabout
 
Posts: 18
Joined: Tue Nov 12, 2013 5:47 am

Re: Could not find USBtiny device (0x1781/0xc9f)

Post by walkabout »

Hi Rick,

Eventually I will use avrdude on the PC to (1) set up the fuses on the Arduino and (2) burn on the program which is the uno.hex file. This works perfect on the mac.

Right now... All I'm trying to do is this simple cmd (below), but it does not even see the Arduino hooked to the Adafruit programmer which is hooked to the PC via usb cable. Avrdude was downloaded and installed okay. I can type "avrdude" and see all the options in the cmd window.

avrdude -c usbtiny -p m8

Any suggestions? Thanks...

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adafruit_support_rick
 
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Joined: Tue Mar 15, 2011 11:42 am

Re: Could not find USBtiny device (0x1781/0xc9f)

Post by adafruit_support_rick »

The winavr you downloaded comes with an old version of avrdude.
Try installing this one:

http://download.savannah.gnu.org/releas ... -win32.zip

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