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.
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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:
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 .
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.
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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 probe and your target device. You can use it to perform tasks such as:
Execute commands and scripts
Read and write memory and registers
Download and verify applications
Erase and program flash memory
Reset and halt the target device
And more!
To use the Segger J-Link Commander, follow these steps:
Launch the J-Link Commander tool from the Start menu (for Windows) or the Terminal (for Linux or macOS).
Type in the commands that you want to execute and press Enter. You can also use the Tab key for auto-completion and the Up and Down keys for command history.
To exit the J-Link Commander, type in exit or quit and press Enter.
How to use Segger J-Link GDB Server
The Segger J-Link GDB Server is a software tool that allows you to use any GDB-compatible IDE or debugger with your Segger J-Link debug probe and your target device. It acts as a bridge between the GDB client (such as Eclipse or Visual Studio Code) and the Segger J-Link debug probe, translating GDB commands into J-Link commands. You can use it to perform tasks such as:
Set breakpoints and watchpoints
Step through code and inspect variables
Evaluate expressions and modify memory
And more!
To use the Segger J-Link GDB Server, follow these steps:
Launch the J-Link GDB Server tool from the Start menu (for Windows) or the Terminal (for Linux or macOS).
Select your Segger J-Link debug probe and your target device from the drop-down menus.
Click on OK to start the server. You should see a message saying "Waiting for GDB connection..."
Launch your GDB client (such as Eclipse or Visual Studio Code) and configure it to connect to the J-Link GDB Server. The default port number is 2331.
Start debugging your target device using your GDB client.
How to use Segger J-Link Flash Download
The Segger J-Link Flash Download is a software tool that allows you to download applications into flash memory of your target device using your Segger J-Link debug probe. It supports various flash types, such as internal, external, QSPI, etc. It also supports various file formats, such as ELF, Intel Hex, Motorola S-record, etc. You can use it to perform tasks such as:
Erase flash memory
Download applications into flash memoryVerify applications in flash memory
And more!
To use the Segger J-Link Flash Download, follow these steps:
Launch the J-Link Flash Download tool from the Start menu (for Windows) or the Terminal (for Linux or macOS).
Select your Segger J-Link debug probe and your target device from the drop-down menus.
Click on Browse to select the application file that you want to download.
Click on Erase to erase the flash memory of your target device.
Click on Program to download the application file into the flash memory of your target device.
Click on Verify to verify that the application file matches the flash memory of your target device.
Conclusion and FAQs
In this article, we have learned what Segger J-Link is, how to download and install it, and how to use it for debugging and programming your target device. We have also covered some of the most common tasks that you can perform with Segger J-Link, such as connecting, configuring, commanding, and downloading. We hope that this article has helped you to get started with Segger J-Link and to enjoy its features and benefits.
If you have any questions or comments about Segger J-Link, please feel free to contact us or visit the . You can also check out some of the frequently asked questions below:
FAQ 1: How can I get a Segger J-Link debug probe?
You can get a Segger J-Link debug probe from various online and offline distributors. You can find a list of authorized distributors on the .
FAQ 2: How much does a Segger J-Link debug probe cost?
The price of a Segger J-Link debug probe depends on the model and the features that you need. You can find a list of available models and their prices on the .
FAQ 3: How can I update my Segger J-Link firmware?
You can update your Segger J-Link firmware using the J-Link Configurator tool or the J-Link Commander tool. You can find more information about how to update your Segger J-Link firmware in the .
FAQ 4: How can I troubleshoot my Segger J-Link connection?
If you encounter any problems with your Segger J-Link connection, you can try some of the following steps:
Check your cable and adapter connections and make sure they are secure and correct.
Check your power supply and make sure it is sufficient and stable.
Check your target device and make sure it is working properly.
Check your host computer and make sure it recognizes your Segger J-Link debug probe.
Check your software settings and make sure they match your hardware configuration.
Check your software logs and error messages and look for possible causes and solutions.
FAQ 5: How can I learn more about Segger J-Link?
If you want to learn more about Segger J-Link, you can visit some of the following resources:
The , where you can find product information, downloads, support, and more.
The , where you can find technical articles, tutorials, tips, and tricks.
The , where you can interact with other users and experts.
The , where you can watch videos and webinars about Segger J-Link.
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