Getting Started with Freedom Development Board for Kinetis Ultra-Low-Power KL82 MCUs

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• True debug support via SWD and JTAG
• High software flexibility
• Full set of peripheral drivers with source
• Application examples and project files

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• Online compiler, no SWD or JTAG debug
• Simple, heavily abstracted programming interface
• Useful but limited drivers with source
• Community-submitted examples

Note: Selecting Mbed will direct you to the Mbed developer website.

Install Eclipse Update

Before using KDS IDE with KSDK, some KDS Eclipse updates must be applied. Without this update, Eclipse cannot generate KSDK-compatible projects.

Note: For Mac® OS users, the steps required for Mac OS are identical to Windows. The only difference is that the IDE looks slightly different.

Note: For Linux® OS users, the steps required for Mac OS are identical to Windows. The only difference is you need to launch KDS IDE from the command line as the root user when installing these updates. On the command line, use this command, assuming the default KDS IDE install path: user@ubuntu:~$ sudo /opt/NXP/KDS_x.x.x/eclipse/kinetis-design-studio.

1. Select "Help" → "Check for Updates"
2. On the selection screen, uncheck all the components except for the "Processor Expert® for Kinetis" component
3. Click on "Next" and follow the prompts to finish the installation of the Processor Expert update
4. Select "Help" → "Install New Software"
5. In the "Install New Software" dialog box, click the "Add" button in the upper right corner. Then, in the "Add Repository" dialog, select the "Archive" button
6. In the Repository archive dialog box, browse the KSDK install directory
7. Enter the <install_dir>/tools/eclipse_update folder and select the KSDK_<version>_Eclipse_Update.zip file
8. Click "Open", and the "OK" button in the "Add Repository" dialog box
9. The KSDK update shows up in the list of the original Install dialogs
10. Check the box to the left of the KSDK Eclipse update and click the "Next" button in the lower right corner
11. Follow the remaining instructions to finish the installation of the update
12. After the update is applied, restart KDS for the changes to take effect

Build the Platform Library

These steps show how to open and build the platform library project in KDS IDE. The platform library is required by the demo and does not build without it.

Note: The steps required for Linux and Mac OS are identical to those for Windows.

1. Select "File → Import" from the KDS IDE menu. In the window that appears, expand the "General" folder and select "Existing Projects into Workspace". Then, click the "Next" button
2. Click the "Browse" button next to the "Select root directory" option

3. Point to the platform library project for the appropriate device, which can be found using this path:

   1Copy<install_dir>/lib/ksdk_platform_lib/kds/KL82Z1287

4. After pointing to the correct directory, your "Import Projects" window should look like the figure below. Click the "Finish" button

5. There are two project configurations (build targets) supported for each KSDK project:

   • Debug - Compiler optimization is set to low, and debug information is generated for the executable. This target should be selected for development and debug
   • Release - Compiler optimization is set to high, and debug information is not generated. This target should be selected for final application deployment
6. Choose the appropriate build target, "Debug" or "Release", by clicking the downward facing arrow next to the hammer icon, as shown below. For this example, select the "Debug" target
7. The library starts building after the build target is selected. To rebuild the library in the future, click the hammer icon (assuming the same build target is chosen)

Build a Demo Application

To build a demo application, repeat the steps listed in the "Build the Platform Library" section using a demo application project instead of the platform library project. Demo application projects are located in this folder:

1Copy<install_dir>/examples/frdmkl82z/demo_apps/<demo_name>/kds

For this example, the path is:

1Copy<install_dir>/examples/frdmkl82z/demo_apps/hello_world/kds

Run a Demo Application

Note: The steps required for Linux and Mac OS are identical to those for Windows.

The FRDM-KL82Z board comes loaded with the mbed/CMSIS-DAP debug interface from the factory. This interface is not supported with the K82 in the current version of KDS. In order to debug, you must install the J-Link OpenSDA v2 application or P&E OpenSDA v2 application in order to use the KDS IDE to download and debug their board. You will also need to update the SEGGER J-Link KDS installation since the version that comes with KDS 3.0 does not know about the K8x family.

To install the J-Link OpenSDA v2 application on the FRDM-KL82Z board:

1. With the board unpowered, hold down the "Reset" button on the FRDM-KL82Z and plug in a micro-B USB cable into the "SDA USB" USB port on the board
2. Release the "Reset" button
3. The board will enumerate as a "BOOTLOADER" driver
4. Drag and drop the J-Link OpenSDA v2 Application  .bin file into this drive
5. Do a power cycle, and now the board will be running the J-Link OpenSDA application

To update the SEGGER J-Link Tool for KDS (you may have done this already from an earlier page):

1. Download the latest "Software and documentation pack", at least version 5.02, from SEGGER J-Link / J-Trace Downloads
2. Install the software
3. At the end of the installation, there will be a dialog box asking to update installed IDEs. Make sure the KDS 3.0.0 IDE is checked
4. For more information, see this MCU on Eclipse blog post

Now, continue with the instructions to connect to the board via KDS and a serial terminal.

1. Open the terminal application on the PC (such as PuTTY or Tera Term) and connect to the debug COM port you determined earlier. Configure the terminal with these settings:

   • 115,200 baud rate
   • No parity
   • 8 data bits
   • 1 stop bit

2. For Linux OS users only, run the following commands in your terminal. These install libudev onto your system, which is required by KDS IDE to launch the debugger

   1Copyuser@ubuntu:~$ sudo apt-get install libudev-dev libudev1

   1Copyuser@ubuntu:~$ sudo ln -s /usr/lib/x86_82-linux-gnu/libudev.so /usr/lib/x86_82-linux-gnu/libudev.so.0

3. Ensure that the debugger configuration is correct for the target you're attempting to connect to

   • To check the available debugger configurations, click the small downward arrow next to the green "Debug" button and select "Debug Configurations"
   • In the "Debug Configurations" dialog box, select debug configuration that corresponds to the hardware platform you're using. For Windows or Linux users, select is the "CMSIS-DAP/DAPLink" option under OpenOCD. For Mac users, select "J-Link"
   • After selecting the debugger interface, click the "Debug" button to launch the debugger
   
4. The first time you do this you will see the following dialog box to accept the J-Link OpenSDA Terms of Use. You can click on the checkbox to avoid seeing it in the future, and then click on "Accept"
   
5. The application is downloaded to the target and automatically run to main():
   
6. Start the application by clicking the "Resume" button:
7. The hello_world application is now running and a banner is displayed on the terminal. If this is not the case, check your terminal settings and connections

Build the Platform Library

These steps show how to open a demo workspace in IAR Embedded Workbench, how to build the platform library required by the demo, and how to build the demo application. The example used below is for the hello_world demo, but similar steps can be applied to any demo in the KSDK.

1. Open demo workspace (*.eww file) in:

   1Copy<install_dir>/examples/frdmkl82z/demo_apps/<demo_name>/iar

   After the workspace is open, two projects are shown: one for the KSDK platform library and one for the demo. Also, the platform library project is bold, indicating that it is the active project. The active project can be changed at any time by right clicking on the desired project and selecting "Set as Active" or via the build target drop-down at the top of the workspace browser

   

2. There are two project configurations (build targets) supported for each KSDK project:

   • Debug - Compiler optimization is set to low, and debug information is generated for the executable. This target should be selected for development and debug
   • Release - Compiler optimization is set to high, and debug information is not generated. This target should be selected for final application deployment

   The tool allows you to select either the "Debug" or "Release" configuration on a per-project basis, but since the demo has a dependency on the platform library, whichever configuration is selected for the demo must also be selected for the platform library. Selecting a configuration in the drop-down also makes whichever project and configuration that is selected the active project. For this example, select the "ksdk_platform_lib - Debug" target

   
3. Click the "Make" button, highlighted in red below
4. When the build is complete, the library (libksdk_platform.a) is generated in one of the following directories, according to the chosen build target:

1Copy<install_dir>/lib/ksdk_platform_lib/iar/KL82Z1287/debug

1Copy<install_dir>/lib/ksdk_platform_lib/iar/KL82Z1287/release

Build a Demo Application

The KSDK demo applications are built upon the software building blocks provided in the Kinetis SDK platform library, built in the previous section. If the platform library is not present, the linker displays an error indicating that it cannot find the library. An easy way to check whether the library is present is to expand the "Output" folder in the "ksdk_platform_lib" project. If the platform library binary is not built and present, follow the previous steps to build it. Otherwise, continue with the following steps to build the desired demo application.

1. If not already done, open the desired demo application workspace (*.eww file). This example's workspace file is located in:

   1Copy<install_dir>/examples/frdmkl82z/demo_apps/hello_world/iar

2. Select the desired build target from the drop-down. For this example, select the "hello_world - Debug" target
3. To build the demo application, click the "Make" button, highlighted in red below
4. The build will complete without errors

Run a Demo Application

The FRDM-KL82Z board comes loaded with the mbed/CMSIS-DAP debug interface from the factory. If you have changed the debug OpenSDA application on your board, visit OpenSDA for information on updating or restoring your board to the factory state.

1. Connect the development platform to your PC via USB cable between the "SDAUSB" USB port on the board and the PC USB connector

2. Open the terminal application on the PC (such as PuTTY or Tera Term) and connect to the debug COM port you determined earlier. Configure the terminal with these settings:

   • 115,200 baud rate
   • No parity
   • 8 data bits
   • 1 stop bit

3. Click the "Download and Debug" button to download the application to the target

   
4. The application is then downloaded to the target and automatically runs to the main() function
5. Run the code by clicking the "Go" button to start the application
6. The hello_world application is now running and a banner is displayed on the terminal. If this is not the case, check your terminal settings and connections

Install CMSIS device pack

After the MDK tools are installed, Cortex® Microcontroller Software Interface Standard (CMSIS) device packs must be installed to fully support the device from a debug perspective. These packs include things such as memory map information, register definitions and flash programming algorithms. Follow these steps to install the appropriate CMSIS pack.

1. Open the MDK IDE, which is called µVision. In the IDE, select the "Pack Installer" icon

   

2. In the "Pack Installer" window, navigate to the section with the Kinetis packs (they are in alphabetical order). The Kinetis packs start with Keil::Kinetis and are followed by the MCU family name, for example Keil::Kinetis_K80_DFP. Because this example uses the FRDM-KL82Z platform, the K80 family pack is selected. Click on the "Install" button next to the pack. This process requires an internet connection to successfully complete

   

3. After the installation finishes, close the "Pack Installer" window and return to the µVision IDE

Build the Platform Library

These steps show how to open the demo workspace in µVision, how to build the platform library required by the demo, and how to build the demo application.

1. Demo workspace files can be found using this path:

   1Copy<install_dir>/examples/frdmkl82z/demo_apps/<demo_name>/mdk

   The workspace file is named <demo_name>.uvmpw, so for this specific example, the actual path is:

   1Copy<install_dir>/examples/frdmkl82z/demo_apps/hello_world/mdk/hello_world.uvmpw

2. After the workspace is open, two projects show up: one for the KSDK platform library, and one for the demo. By default, the demo project is selected as the active project
3. Make the platform library project the active project since the library is required by the demo application to build. To make the platform library project active, right click on it and select "Set as Active Project". The active project has a black box around the project name. After it is active, the platform library project is highlighted

4. There are two project configurations (build targets) supported for each KSDK project:

   • Debug - Compiler optimization is set to low, and debug information is generated for the executable. This target should be selected for development and debug
   • Release - Compiler optimization is set to high, and debug information is not generated. This target should be selected for final application deployment

5. The tool allows selection of the build target based on the active project, so in order to change the configuration for the platform library it must be the active project. Choose the appropriate build target: "Debug" or "Release" from the drop-down menu. For this example, select the "ksdk_platform_lib Debug" configuration

   
6. Rebuild the project files by left-clicking the "Rebuild" button, highlighted in red

Build a Demo Application

The KSDK demo applications are built upon the software building blocks provided in the Kinetis SDK platform library, built in the previous section. If the platform library is not present, the linker displays an error indicating that it cannot find the library. If the platform library binary is not built and present, follow the previous steps to build it. Otherwise, continue with the following steps to build the desired demo application

1. If not already done, open the desired demo application workspace in:

   1Copy<install_dir>/examples/frdmkl82z/demo_apps/<demo_name>/mdk

   The workspace file is named <demo_name>.uvmpw, so for this specific example, the actual path is:

   1Copy<install_dir>/examples/frdmkl82z/demo_apps/hello_world/mdk/hello_world.uvmpw

2. Make the demo the active project
3. To build the demo project, select the "Rebuild" button, highlighted in red
4. The build will complete without errors

Run an Example Application

The FRDM-KL82Z board comes loaded with the mbed/CMSIS-DAP debug interface from the factory. If you have changed the debug OpenSDA application on your board, visit OpenSDA for information on updating or restoring your board to the factory state.

1. Connect the development platform to your PC via USB cable between the "SDAUSB" USB port on the board and the PC USB connector

2. Open the terminal application on the PC (such as PuTTY or Tera Term) and connect to the debug COM port you determined earlier. Configure the terminal with these settings:

   • 115,200 baud rate
   • No parity
   • 8 data bits
   • 1 stop bit

3. After the application is properly built, click the "Start/Stop Debug Session" button to download the application to the target and start the debugger

   

4. After clicking the "Debug" button, the application downloads to the target and should be running

   

5. Run the code by clicking the "Run" button to start the application

   

6. The hello_world application is now running and a banner is displayed on the terminal. If this is not the case, check your terminal settings and connections

   

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Set Up Toolchain

This section contains the steps to install the necessary components required to build and run a KSDK demo application with the Arm GCC Toolchain, as supported by the Kinetis SDK.

There are many ways to use Arm GCC tools, but this example focuses on a Windows environment. Though not discussed here, GCC tools can also be used with both Linux OS and Mac OSX.

Install GCC Arm Embedded Toolchain

Download and run the installer from GNU Arm Embedded Toolchain . This is the actual toolchain (i.e., compiler, linker, etc.). The GCC toolchain should correspond to the latest supported version, as described in the Kinetis SDK Release Notes.

Install MinGW

The Minimalist GNU for Windows (MinGW) development tools provide a set of tools that are not dependent on third party C-Runtime DLLs (such as Cygwin). The build environment used by the KSDK does not utilize the MinGW build tools, but does leverage the base install of both MinGW and MSYS. MSYS provides a basic shell with a Unix-like interface and tools.

1. Download the latest MinGW mingw-get-setup installer from MinGW - Minimalist GNU for Windows Files

2. Run the installer. The recommended installation path is C:\MinGW, however, you may install to any location

Note: The installation path cannot contain any spaces.

3. Ensure that the "mingw32-base" and "msys-base" are selected under Basic Setup

   

4. Click "Apply Changes" in the "Installation" menu and follow the remaining instructions to complete the installation

   

5. Add the appropriate item to the Windows operating system Path environment variable. It can be found under Control Panel → System and Security → System → Advanced System Settings in the "Environment Variables" section. The path is:

   1Copy<mingw_install_dir>\bin

   Assuming the default installation path, C:\MinGW, an example is shown below. If the path is not set correctly, the toolchain does not work

   Note: If you have C:\MinGW\msys\x.x\bin in your PATH variable (as required by KSDK 1.0.0), remove it to ensure that the new GCC build system works correctly.

   

Add a New Environment Variable for ARMGCC_DIR

1. Create a new system environment variable and name it ARMGCC_DIR. The value of this variable should point to the Arm GCC Embedded tool chain installation path, which, for this example, is:

   1CopyC:\Program Files (x86)\GNU Tools Arm Embedded\4.8 2014q3

2. Reference the installation folder of the GNU Arm GCC Embedded tools for the exact path name of your installation

Install CMake

1. Download CMake 3.0.x from CMake

2. Install CMake, ensuring that the option "Add CMake to system PATH" is selected when installing. It's up to the user to select whether it's installed into the PATH for all users or just the current user. In this example, the assumption is that it's installed for all users

   

3. Follow the remaining instructions of the installer

4. You may need to reboot your system for the PATH changes to take effect

Build an Example Application

To build an example application, follow these steps.

1. Open a GCC Arm Embedded Toolchain command window. To launch the window, from the Windows operating system Start menu, go to "Programs → GNU Tools Arm Embedded <version>" and select "GCC Command Prompt"

2. Change the directory of the command window to the platform library directory in the KSDK:

   1Copy<install_dir>/lib/ksdk_platform_lib/armgcc/KL82Z1287

3. There are two project configurations (build targets) supported for each KSDK project:

   • Debug - Compiler optimization is set to low, and debug information is generated for the executable. This target should be selected for development and debug
   • Release - Compiler optimization is set to high, and debug information is not generated. This target should be selected for final application deployment
4. There are batch files provided to build both configurations. For this example, the "Debug" target is built and "build_debug.bat" is typed on the command line. If the "Release" target is desired, type the "build_release.bat" instead. Alternatively, if using the command line is not desired, you can double click on the batch files from Windows Explorer
5. When the build finishes, the output looks like the image below
6. The library (libksdk_platform.a) is generated in one of these directories, according to the build target:

   1Copy<install_dir>/lib/ksdk_platform_lib/armgcc/KL82Z1287/debug

   1Copy<install_dir>/lib/ksdk_platform_lib/armgcc/KL82Z1287/release

Build a Demo Application

KSDK demo applications require that the platform library for the same build target (Debug or Release) is present. Please ensure that you follow the steps in previous sections prior to attempting to build a demo application.

To build a demo application, follow these steps:

1. If not already running, open a GCC Arm Embedded Toolchain command window. To launch the window, from the Windows operating system Start menu, go to "Programs → GNU Tools Arm Embedded <version>" and select "GCC Command Prompt"

2. Change the directory to the demo application project directory, which has a path like this:

   1Copy<install_dir>/examples/frdmkl82z/demo_apps/<demo_name>/armgcc

   For this example, the exact path is:

   1Copy<install_dir>/examples/frdmkl82z/demo_apps/hello_world/armgcc

3. Type "build_debug.bat" on the command line or double click on the "build_debug.bat" file in Windows operating system Explorer to perform the build. The output is shown in this figure:

Run a Demo Application

The GCC tools require a J-Link debug interface. To update the OpenSDA firmware on your board to the latest J-Link app, visit OpenSDA. After installing the J-Link OpenSDA application, download the J-Link driver and software package from SEGGER Downloads .

1. Connect the development platform to your PC via USB cable between the "SDAUSB" USB port on the board and the PC USB connector

2. Open the terminal application on the PC (such as PuTTY or Tera Term) and connect to the debug COM port you determined earlier. Configure the terminal with these settings:

   • 115,200 baud rate
   • No parity
   • 8 data bits
   • 1 stop bit

3. Open the J-Link GDB Server application. Assuming the J-Link software is installed, the application can be launched by going to the Windows operating system Start menu and selecting "Programs → SEGGER → J-Link <version> J-Link GDB Server"

4. Modify the settings as shown below. The target device selection chosen for this example is the "MKL82Z128xxx7"

   
5. Hit "OK" to connect to the board. You may see a warning about licensing, so accept the terms to move on

6. After it is connected, the screen should resemble this figure:

   

7. If not already running, open a GCC Arm Embedded Toolchain command window. To launch the window, from the Windows operating system Start menu, go to "Programs → GNU Tools Arm Embedded <version>" and select "GCC Command Prompt"

   

8. Change to the directory that contains the demo application output. The output can be found in using one of these paths, depending on the build target selected:

   1Copy<install_dir>/boards/<board_name>/<example_type>/<application_name>/armgcc/debug

   1Copy<install_dir>/boards/<board_name>/<example_type>/<application_name>/armgcc/release

   For this example, the path is:

   1Copy<install_dir>/boards/frdmkl82z/demo_apps/hello_world/armgcc/debug

9. Run the command arm-none-eabi-gdb.exe <demo_name>.elf. For this example, it is arm-none-eabi-gdb.exe hello_world.elf

   

10. Run these commands:

    • target remote localhost:2331
    • monitor reset
    • monitor halt
    • load
    • monitor reset
    • monitor go
11. The application is now downloaded and halted at the reset vector. Execute the "monitor go" command to start the example application
12. The hello_world application is now running and a banner is displayed in the terminal window