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J-Link Support: Installing the driver
| J-Link overview | Performance comparison | J-Link Pricing | J-Link non-commercial use | J-Link flash programming overview | J-Link FAQs | Using J-Link with IAR "C"-Spy | J-Link USB driver installation | Troubleshooting | J-Link adapters | J-Link JTAG Isolator | J-Link GDB Server | J-Flash ARM | J-Link ARM RDI software | J-Link developer DLL (J-Link SDK) | J-Link Flash SDK | J-Link dedicated flash programming utilities | J-Mem |

When your target device is plugged into your computer's USB port, or when the computer is first powered up after connecting the J-Link, Windows will detect the new hardware.

Step 1 Step 2
The wizard starts the installation of the driver. First select the "Search for a suitable driver for my device (recommended)" option, then click on the "Next >" button. In the next step, you need to select the "Specify a location" option, and click on the "Next >" button.
Step 3 Step 4
The wizard will ask you to help it find the correct driver files for the new device. Use the directory navigator to select "D:\armjlink_v108\" (or your chosen location) and confirm with a click on the "Next >" button. The wizard confirms your choice and starts to copy, when you click on the "Next >" button.
Step 5 Step 6
At this point, the installation is complete. Click on the "Finish" button to dismiss the installation. To verify the correct installation of the driver, disconnect and reconnect J-Link to the USB port. During the initialization process the LED on the J-Link is flashing and afterwards glows permanently. Connect your target hardware with the J-Link via JTAG and start the provided sample application JLink.exe. The sample application JLink.exe should display the voltage and the Id of the target device as shown in the following screenshot.

In addition to this you may verify the driver installation by consulting the Windows device manager. If the driver is installed and your J-Link ARM is connected to your computer, the device manager should list the J-Link ARM driver as a node below "Universal Serial Bus controllers" as show in the following screenshot:

A right-click on the driver will open a context menu which contains the item "Properties". If you select this item, a new dialog is opened and should report: "This device is working properly".

Connecting the target system

Power-on Sequence

In general J-Link ARM should be powered on before connecting it with the target device. That means you should first connect J-Link with the host system via USB and then connect J-Link ARM with the target device via JTAG. Power-on the device after you connected J-Link ARM to it.

Verifying target device connection

If the USB driver is working properly and your J-Link ARM is connected with the host system, you may connect J-Link ARM to your target hardware. Then start JLink.exe again which should now display the normal J-Link ARM related information and in addition to that it should report that it found a JTAG target and the target's core ID.
The screenshot below shows the output of JLink.exe. As can be seen, it reports a J-Link ARM with one JTAG device connected.

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Last update: January 8, 2008