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Technical Note 67644
USB device (dongle/JTAG) related to EW-product do not respond
| EW targets: |
All |
| EW component: |
Embedded Workbench & GUI |
| Keywords: |
dongle, J-Link, USB |
| Last update: |
December 4, 2009 |
Background
Sometimes a USB device (such as a dongle or JTAG) related to the EW do not respond.
A typical situation when the USB system
can become shaken, is when a Windows update is installed.
First action
First of all try to trouble shoot according to the documentaion/Tech-Notes for the USB device in use.
| • |
Trouble shoot the
SuperPro USB-dongle
with Tech Note 62867.
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| • |
Trouble shoot the
J-Link-ARM
with \arm\doc\J-Link_J-TraceARM-2.pdf and Tech Notes 76557 and 41987.
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Next action
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Attach the USB device.
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| • |
In the Device Manager uninstall this USB device.
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| • |
Remove the USB device.
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(Sometimes needed.) Restart the computer. Possibly you also need some (4-5) minutes of power down for the computer.
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| • |
Attach the USB device and install the drivers when the Windows Wizard has started.
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Third action
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Unplug all USB devices, (keep mouse and keyboard).
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Go into Control panel/system/device manager
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Change presentation at menu View to 'Devices by connection' (See picture at link
'Device Manager alternative'
.)
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Attach the troublesome USB device.
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Expand the list until you find the non-respronsive USB device. (See example in picture at link
'Device Manager alternative'
.)
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Uninstall at a higher level, i.e. the 'Standard universal PCI to...".´, is to be uninstalled (and later reinstalled by the Windows system).
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Reboot.
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Plug in the USB device and the Windows Wizard asks for the driver.
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Install the driver.
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Fourth action
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Restart PC
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Enter 'Safe Mode'
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Check for (and remove) USB devices that might exist (and only show up in 'Safe Mode') as USB devices that have not been correctly un-plugged.
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Actions beyond this tech note
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If there are still USB probelms contact your local IAR support department, and request details on more to do.
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Please Note
This tech note has been tested with the SuperPro USB-dongle and the J-Link-ARM. The suggestions above might (or not) work for other USB devices used in conjuction with EW:s.
For example the JTAGICE-mkII (EWAVR) and the PE-USB-BDM-probe (EWHCS12) uses a driver named
'Jungo'
which might need other treatment. (At time of writing this has not been tested by IAR.)
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