USB-KW24D512
Overview
The USB-KW24D512 is an evaluation board in a convenient USB dongle form factor based on the NXP MKW24D512 System-in-Package (SiP) device (KW2xD wireless MCU series). MKW24D512 wireless MCU provides a low-power, compact device with integrated IEEE 802.15.4 radio. The board can be used as a packet sniffer, network node, border router or as a development board.
Hardware
Kinetis KW2xD-2.4 GHz 802.15.4 Wireless Radio Microcontroller (50 MHz, 512 KB flash memory, 64 KB RAM, low-power, crystal-less USB)
USB Type A Connector
Two blue LEDs
One user push button
One reset button
Integrated PCB Folded F-type antenna
10-pin (0.05”) JTAG debug port for target MCU
For more information about the KW2xD SiP and USB-KW24D512 board:
Supported Features
The usb_kw24d512 board supports the hardware features listed below.
- on-chip / on-board
- Feature integrated in the SoC / present on the board.
- 2 / 2
-
Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files. -
vnd,foo -
Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.
Type |
Location |
Description |
Compatible |
|---|---|---|---|
CPU |
on-chip |
ARM Cortex-M4 CPU1 |
|
ADC |
on-chip |
Kinetis ADC161 |
|
Clock control |
on-chip |
NXP Kinetis Multipurpose Clock generator (MCG) IP node1 |
|
on-chip |
Kinetis System Integration Module (SIM) IP node1 |
||
on-chip |
Generic fixed factor clock provider3 |
||
Flash controller |
on-chip |
NXP Kinetis Flash Memory Module L (FTFL)1 |
|
GPIO & Headers |
on-chip |
Kinetis GPIO5 |
|
I2C |
on-chip |
Kinetis I2C2 |
|
IEEE 802.15.4 |
on-chip |
NXP MCR20A 802.15.4 wireless transceiver1 |
|
Input |
on-board |
Group of GPIO-bound input keys1 |
|
Interrupt controller |
on-chip |
ARMv7-M NVIC (Nested Vectored Interrupt Controller)1 |
|
LED |
on-board |
Group of GPIO-controlled LEDs1 |
|
MTD |
on-chip |
Flash node1 |
|
on-board |
Fixed partitions of a flash (or other non-volatile storage) memory1 |
||
Pin control |
on-chip |
NXP PORT Pin Controller5 |
|
on-chip |
NXP PORT Pin Controller1 |
||
RNG |
on-chip |
Kinetis RNGA (Random Number Generator Accelerator)1 |
|
Serial controller |
on-chip |
||
SPI |
on-chip |
||
SRAM |
on-chip |
Generic on-chip SRAM1 |
|
Timer |
on-chip |
ARMv7-M System Tick1 |
|
on-chip |
NXP FlexTimer Module (FTM)3 |
||
USB |
on-chip |
NPX Kinetis USBFSOTG Controller in device mode1 |
|
Watchdog |
on-chip |
Kinetis watchdog1 |
Connections and IOs
The KW2xD SoC has five pairs of pinmux/gpio controllers.
Name |
Function |
Usage |
|---|---|---|
PTA1 |
UART0_RX |
UART Console |
PTA2 |
UART0_TX |
UART Console |
PTC4 |
GPIO |
SW1 |
PTD4 |
GPIO |
Blue LED (D2) |
PTD5 |
GPIO |
Blue LED (D3) |
PTB10 |
SPI1_PCS0 |
internal connected to MCR20A |
PTB11 |
SPI1_SCK |
internal connected to MCR20A |
PTB16 |
SPI1_SOUT |
internal connected to MCR20A |
PTB17 |
SPI1_SIN |
internal connected to MCR20A |
PTB19 |
GPIO |
internal connected to MCR20A (Reset) |
PTB3 |
GPIO |
internal connected to MCR20A (IRQ_B) |
PTC0 |
GPIO |
internal connected to MCR20A (GPIO5) |
System Clock
USB-KW24D512 contains 32 MHz oscillator crystal, which is connected to the clock pins of the radio transceiver. The MCU is configured to use the 4 MHz external clock from the transceiver with the on-chip PLL to generate a 48 MHz system clock.
Serial Port
The KW2xD SoC has three UARTs. One is configured and can be used for the console, but it uses the same pins as the JTAG interface and is only accessible via the JTAG SWD connector.
USB
The KW2xD SoC has a USB OTG (USBOTG) controller that supports both device and host functions. Only USB device function is supported in Zephyr at the moment. The USB-KW24D512 board has a USB Type A connector and can only be used in device mode.
Programming and Debugging
The usb_kw24d512 board supports the runners and associated west commands listed below.
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 the J-Link External Debug Probe.
J-Link External Debug Probe
Install the J-Link Debug Host Tools and make sure they are in your search path.
Attach a J-Link 10-pin connector to J1.
Configuring a Console
The console is available using Segger RTT.
Connect a USB cable from your PC to J5.
Once you have started a debug session, run telnet:
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
SEGGER J-Link V6.44 - Real time terminal output
SEGGER J-Link ARM V10.1, SN=600111924
Process: JLinkGDBServerCLExe
Flashing
Here is an example for the Hello World application.
# From the root of the zephyr repository
west build -b usb_kw24d512 samples/hello_world
west flash
The Segger RTT console is only available during a debug session. Use attach
to start one:
# From the root of the zephyr repository
west build -b usb_kw24d512 samples/hello_world
west attach
Run telnet as shown earlier, and you should see the following message in the terminal:
***** Booting Zephyr OS v1.14.0-rc1 *****
Hello World! usb_kw24d512
Debugging
Here is an example for the Hello World application.
# From the root of the zephyr repository
west build -b usb_kw24d512 samples/hello_world
west debug
Run telnet as shown earlier, step through the application in your debugger, and you should see the following message in the terminal:
***** Booting Zephyr OS v1.14.0-rc1 *****
Hello World! usb_kw24d512
Support Resources for Zephyr
MCUXpresso for VS Code, wiki documentation and Zephyr lab guides
NXP’s Zephyr landing page (including training resources)