What is JLink OB?

J-Link OB is an on-board debug probe. It turns an evaluation board into a complete evaluation kit! Added features include debug support and download into Flash memory. J-Link OB is a cost-effective way to allow customers to fully use, test, and debug the target device right out of the box.

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What is JLink JTAG?

J-Link BASE is a USB powered JTAG debug probe supporting a large number of CPU cores. Based on a 32-bit RISC CPU, it can communicate at high speed with the supported target CPUs. J-Link is used around the world in tens of thousand places for development and production (flash programming) purposes.

How do I connect to JLink?

Target connection

Connect the J-Link via USB to the PC.
Power the target device.
Connect the target device with the J-Link.
Start J-Link Commander and follow the startup configuration instructions.

What is Cmsis DAP?

CMSIS-DAP is the interface firmware for a Debug Unit that connects the Debug Port to USB. Debuggers, which execute on a host computer, connect via USB to the Debug Unit and to the Device that runs the application software. The Debug Unit connects via JTAG or SW to the target Device.

What is Jlink used for?

Jlink is a Java command line tool that is used to generate a custom Java runtime environment (JRE). You can use your customized JRE to run Java applications. Using jlink, you can create a custom runtime environment that only includes the relevant class file.

How do I use Jlink debugger?

Debug Settings

Open the Options for Target — Debug dialog of µVision.
Enable Use and select Cortex-M/R J-LINK/J-Trace.
Click Settings to open the Target Driver Setup dialog.
Select SW (Serial Wire) for the debug Port, and click Auto Clk to set the debugging communication speed.

What is segger RTT?

SEGGER’s Real Time Transfer (RTT) is the proven technology for system monitoring and interactive user I/O in embedded applications. It combines the advantages of SWO and semihosting at very high performance. Bi-directional communication with the target application.

What is JLink used for?

How do I run JLink commander?

Answer

Connect a single JLink adapter or EFM32 STK with on-board JLink to the PC and MCU.
Run JLink Commander (jlink.exe) in interactive mode with no command line arguments:
JLink Commander should automatically connect to the only JLink adapter using JTAG.
[Optional] To switch to serial wire debug (SWD):