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NXP FRDM-KE15Z

Overview

The FRDM-KE15Z is a development board for NXP Kinetis KE1xZ 32-bit MCU-based platforms. The FRDM-KE15Z contains a robust TSI module with up to 50 channels which makes this board highly flexible for touch keys. Offers options for serial communication, flash programming, and run-control debugging.

FRDM-KE15Z

Hardware

  • MKE15Z256VLL7 MCU (up to 72 MHz, 256 KB flash memory, 32 KB RAM)

  • OpenSDA Debug Circuit with a virtual serial port

  • Touch electrodes in the self-capacitive mode

  • Compatible with FRDM-TOUCH, FRDM-MC-LVBLDC, and Arduino® boards

  • User Components such as Reset; RGB LED and two user buttons

  • 6-axis FXOS8700CQ digital accelerometer and magnetometer

For more information about the KE1xZ SoC and the FRDM-KE15Z board, see these NXP reference documents:

Supported Features

The frdm_ke15z board configuration supports the following hardware features:

Interface

Controller

Driver/Component

NVIC

on-chip

nested vector interrupt controller

SYSTICK

on-chip

systick

GPIO

on-chip

gpio

UART

on-chip

uart polling; uart interrupt

The default configuration can be found in the defconfig file: boards/nxp/frdm_ke15z/frdm_ke15z_defconfig.

Other hardware features are not currently supported by the port.

System Clock

The KE15 SoC is configured to run at 48 MHz using the FIRC.

Serial Port

The KE15 SoC has three UARTs. UART1 is configured for the console.

Programming and Debugging

Build and flash applications as usual (see Building an Application and Run an Application for more details).

Configuring a Debug Probe

A debug probe is used for both flashing and debugging the board. This board is configured by default to use Linkserver.

Early versions of this board have an outdated version of the OpenSDA bootloader and require an update. Please see the DAPLink Bootloader Update page for instructions to update from the CMSIS-DAP bootloader to the DAPLink bootloader.

Option 1: Linkserver

Install the LinkServer Debug Host Tools and make sure they are in your search path. LinkServer works with the default CMSIS-DAP firmware included in the on-board debugger.

Linkserver is the default for this board, west flash and west debug will call the linkserver runner.

Configuring a Console

Regardless of your choice in debug probe, we will use the OpenSDA microcontroller as a usb-to-serial adapter for the serial console.

Connect a USB cable from your PC to J5.

Use the following settings with your serial terminal of choice (minicom, putty, etc.):

  • Speed: 115200

  • Data: 8 bits

  • Parity: None

  • Stop bits: 1

Flashing

Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b frdm_ke15z samples/hello_world
west flash

Open a serial terminal, reset the board (press the SW1 button), and you should see the following message in the terminal:

*** Booting Zephyr OS build v3.6.0-3478-gb923667860b1 ***
Hello World! frdm_ke15z/mke15z7

Debugging

Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b frdm_ke15z samples/hello_world
west debug

Open a serial terminal, step through the application in your debugger, and you should see the following message in the terminal:

***** Booting Zephyr OS v3.6.0-xxx-gxxxxxxxxxxxx *****
Hello World! frdm_ke15z