J-Link Software and Documentation - All You Need for J-Link / J-Trace Debugging
Segger Download J-Link: How to Install and Use the Most Popular Debug Probe
If you are working on embedded systems development, you probably have heard of Segger J-Link, the most widely used line of debug probes available today. But what is Segger J-Link exactly, and how can you download and use it for your projects? In this article, we will answer these questions and more, so you can get started with Segger J-Link in no time.
What is Segger J-Link?
Segger J-Link is a family of debug probes that allow you to connect your target device (such as a microcontroller or a microprocessor) to your host computer (such as a PC or a Mac) via USB or Ethernet. By using Segger J-Link, you can perform various debugging and programming tasks on your target device, such as:
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Setting breakpoints and stepping through code
Reading and writing memory and registers
Downloading applications into flash memory
Monitoring variables and expressions
Tracing program execution and data transfers
Measuring performance and power consumption
And much more!
Segger J-Link is compatible with all popular development environments, such as Eclipse, Keil, IAR, Visual Studio Code, Arduino, etc. It also supports various debug protocols, such as JTAG, SWD, SPI, cJTAG, etc.
Features and benefits of Segger J-Link
Segger J-Link has many features and benefits that make it the best choice for embedded systems development. Here are some of them:
It has unparalleled performance, with fast download speeds, low latency, and high reliability.
It has an extensive feature set, with support for unlimited flash breakpoints, RTT (Real Time Transfer), SWO (Serial Wire Output), ETM (Embedded Trace Macrocell), etc.
It has a large number of supported CPUs, with over 6,000 devices from more than 70 manufacturers.
It has a user-friendly interface, with easy-to-use software tools and documentation.
It has a flexible licensing model, with free software updates and no annual maintenance fees.
It has a long-term availability, with more than 10 years of proven track record and continuous improvement.
Supported devices and development environments
To access a list of supported devices by Segger J-Link, please go to .
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To access a list of supported development environments by Segger J-Link, please go to . You can also use Segger J-Link with any IDE that supports GDB (GNU Debugger), such as Eclipse or Visual Studio Code.
How to download Segger J-Link software and documentation pack
The Segger J-Link software and documentation pack is an all-in-one debugging solution that includes all the software tools and documentation you need to use Segger J-Link with your target device. You can download it for free from the .
System requirements and compatibility
The Segger J-Link software and documentation pack is compatible with Windows, Linux, and macOS operating systems. The minimum system requirements are:
A PC with a 1 GHz processor and 512 MB of RAM
A USB 2.0 or higher port
A Segger J-Link debug probe
A target device with a supported CPU
Download options and installation steps
To download the Segger J-Link software and documentation pack, you have two options:
You can download the latest version from the . This option will give you the most up-to-date features and bug fixes.
You can download the version that matches your Segger J-Link debug probe from the . This option will ensure that your software and hardware are compatible.
After downloading the Segger J-Link software and documentation pack, you can install it by following these steps:
Extract the downloaded ZIP file to a folder of your choice.
Run the setup.exe file (for Windows) or the install script (for Linux or macOS).
Follow the instructions on the screen to complete the installation.
Restart your computer if prompted.
How to update Segger J-Link software
To update your Segger J-Link software, you can use the built-in update feature. To do this, follow these steps:
Launch the J-Link Configurator tool from the Start menu (for Windows) or the Applications folder (for Linux or macOS).
Select your Segger J-Link debug probe from the list of connected devices.
Click on the Update button to check for available updates.
If an update is available, click on Yes to download and install it.
Wait for the update process to finish and disconnect your Segger J-Link debug probe when prompted.
How to use Segger J-Link for debugging and programming
Now that you have installed and updated your Segger J-Link software, you are ready to use it for debugging and programming your target device. Here are some of the most common tasks that you can perform with Segger J-Link:
How to connect Segger J-Link to your target device
To connect your Segger J-Link debug probe to your target device, you need to use a suitable cable and adapter. The type of cable and adapter depends on the debug interface of your target device, such as JTAG, SWD, SPI, etc. You can find more information about the different debug interfaces and how to connect them in the .
After connecting your Segger J-Link debug probe to your target device, you need to power up both devices. You can power up your target device using an external power supply or using the USB power from your host computer. You can power up your Segger J-Link debug probe using the USB power from your host computer or using an external 5V power supply (for some models).
To verify that your connection is successful, you can use the J-Link Configurator tool or the J-Link Commander tool. These tools will show you information about your Segger J-Link debug probe and your target device, such as serial number, firmware version, device name, core frequency, etc.
How to use Segger J-Link Configurator
The Segger J-Link Configurator is a graphical user interface tool that allows you to configure and manage your Segger J-Link debug probes. You can use it to perform tasks such as:
Update your Segger J-Link firmware
Change your Segger J-Link settings, such as speed, interface, voltage, etc.
Test your Segger J-Link connection and functionality
Assign names and IP addresses to your Segger J-Link debug probes
And more!
To use the Segger J-Link Configurator, follow these steps:
Launch the J-Link Configurator tool from the Start menu (for Windows) or the Applications folder (for Linux or macOS).
Select your Segger J-Link debug probe from the list of connected devices.
Click on the Settings button to open the Settings dialog.
Change the settings according to your preferences and click on OK to save them.
Click on the Test button to test your Segger J-Link connection and functionality.
How to use Segger J-Link Commander
The Segger J-Link Commander is a command line interface tool that allows you to control and communicate with your Segger J-Link debug pro