ERROR: Could not find USBtiny device (0x1781/0xc9f) on W10

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

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jguas
 
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Joined: Tue Feb 01, 2022 2:39 pm

ERROR: Could not find USBtiny device (0x1781/0xc9f) on W10

Post by jguas »

My USBtinyISP programmer is not reconized by AVRDUDE 6.11
Working Conditions:
SO: W10
USB port on programmer looks well (Green led is ON)
Device is enumerated correctly (I hope) - Device manager reports: Universal serial bus devices --> USBTinyISP
I've just reinstalled the Adafruit drivers on W10.
At this moment no target MCU is connected to programmer.
Run AVERDUDE 6.11 and write on mcd: avrdude -c usbtiny -p m8
Answer from avrdude: "Could not find USBtiny device (0x1781/0xc9f)"

This programmer worked fine under WXP - a few years ago. And now under W10 it does not react to avrdude calls.

¿Does any one found the solution to this issue on W10?

Any help will be appreciated.

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mikeysklar
 
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Joined: Mon Aug 01, 2016 8:10 pm

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

Post by mikeysklar »

This is in the FAQ for the USBtinyISP programmer. I would also add USB3 as a possible culprit to the list.

https://learn.adafruit.com/usbtinyisp/h ... -632147-10
I'm running avrdude and I get "Could not find USB device 0x1781/0xc9f"

This response means it could not find the programmer. There are many possible reasons:

If you are using the latest WinAVR (which was built with an old version of the libusb driver library) you must use the v1.10 driver. Uninstall the driver you have and make sure you get the right one installed.
Try unplugging and re-plugging it in
Make sure the driver (windows only) is installed.
Make sure the green LED is lit (which means its powered and has performed USB enumeration).
Make sure you have libusb installed and that it is the correct version. (linux/mac)
Make sure you have replaced the old version of libusb0.dll with the one from the download page.
Make sure you are not providing power to the target through USB when it already has power. Check the jumper in the end of the device and remove it, if so.
If you programmed the usbtinyisp chip, make sure the fuses are set properly.

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