Setting Up The Usb Interface; Verifying Correct Driver Installation - Segger J-Link User Manual

3.2

Setting up the USB interface

After installing the J-Link ARM software and documentation package it should not be
necessary to perform any additional setup sequences in order to configure the USB
interface of J-Link.
3.2.1

Verifying correct driver installation

To verify the correct installation of the driver, disconnect and reconnect J-Link / J-
Trace to the USB port. During the enumeration process which takes about 2 seconds,
the LED on J-Link / J-Trace is flashing. After successful enumeration, the LED stays
on permanently.
Start the provided sample application JLink.exe, which should display the compila-
tion time of the J-Link firmware, the serial number, a target voltage of 0.000V, a
complementary error message, which says that the supply voltage is too low if no
target is connected to J-Link / J-Trace, and the speed selection. The screenshot below
shows an example.
In addition you can verify the driver installation by consulting the Windows device
manager. If the driver is installed and your J-Link / J-Trace is connected to your com-
puter, the device manager should list the J-Link USB driver as a node below "Univer-
sal Serial Bus controllers" as shown in the following screenshot:
J-Link / J-Trace (UM08001) © 2004-2009 SEGGER Microcontroller GmbH & Co. KG
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