This document solves usb driver errors for Arduino programmers. The problem usually happens after installing Atmel Studio. The error will often be:- avrdude: usbdev_open() Atmel changed the usb driver they install to Jungo which doesn't work with the Arduino Ide and therfore with Visual Micro This document explains how to switch the driver to one that the Arduino tool chain will work with. Tested on Xp, Win7 and Win8.1 1) We downloaded the latest release (1.2.6.0) of libusb-win32 from but the latest release can be found here 2) Unpack the libusb zip and run the inf-wizard.exe in the bin folder AS ADMINISTRATOR 3) Select the avrisp mkII from the list that appears when you run inf-wizard then click next through the wizard. 4) When prompted select a place on your pc to save the.inf file that the wizard will create. (If you loose the file in the future you can simply repeat the task) 5) When prompted click OK to install the driver.
If required you can run the Atmel Studio 6.1 Jungo driver install again and revert to Atmel Studio drivers with the avrispmkII. It is probably also possible to switch back to arduino/avrdude mode by reapplying the.inf created in step 6) via device manager Sorry about the formatting of the following, it is my fault and caused by conversion from ms word.
This update was submiited by Brian M. It explains how to make both the Arduino and Atmel Studio Native commands to work using the same usb driver. Using Atmel's AVRISP mk II Programmer with the Visual Micro plug-in for Atmel Studio IDE Overview: When you install the Arduino IDE, a USB driver is installed so that you can use the Atmel AVRISP mk II programmer as an alternative to using the Arduino serial Boot-loader. Also, if you need to actually program an AVR MCU with the bootloader code itself (i.e. If you have a blank Mega328 that has not had the boot-loader firmware pre-installed), you can do so from the Arduino IDE using the Tools/Burn Bootloader function- after having specified the AVRISP mk II as the programmer using Tools/Programmer function. When you install Studio 6.1/ 6.2 however, the Atmel installation will install it's own USB driver, which work with the Studio6.x IDE. This is the Jungo driver, and while you have the option of not installing the Jungo driver during the Studio install process, you can't use the Atmel AVRISP mk II nor the Atmel JTAGICE3 without this driver.
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The Problem: When you install the Visual Micro plug-in for Studio 6.x, you are most likely to be using the Arduino serial bootloader, since Visual Micro's programming and debugging capability is based upon the USB-serial link between the PC and the Arduino board. Doing things this way works fine. However, if you decide that you want to use the Atmel AVRISP mk II from within the Visual Micro/Studio 6.x IDE (for downloading your program, or burning the Arduino bootloader), you will find that it doesn't work. You will get an error message to the effect that AVRdude (the programming software used by the Arduino IDE), can't “see” the AVRISP mk II programmer. This happens because Studio6.x uses the Jungo USB driver, and Visual Micro basically calls the AVRdude programming software (located in the Arduino program folder) just like the Arduino IDE does. AVRdude won't work properly, because its normal USB driver has been replaced by the Jungo driver that Studio6.x has loaded. The Solution: What we need is a way to allow the Jungo driver that is associated with the Studio6.x to co-exist with the USB driver that the Arduino IDE uses.