This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

SEGGER IP Switch Board¶

Overview¶

The Segger IP Switch Board is a Evaluation board based on NXP Kinetis K66 MCU. It comes with Micrel/Microchip KSZ8794CNX integrated 4-port 10/100 managed Ethernet switch with Gigabit RGMII/MII/RMII interface.

KSZ8794CNX enables evaluation for switch functions
On-board debug probe J-Link-OB for programming

Hardware¶

MK66FN2M0VMD18 MCU (180 MHz, 2 MB flash memory, 256 KB RAM, low-power, crystal-less USB
Dual role USB interface with micro-B USB connector
2 User LED
On-board debug probe J-Link-OB for programming
Micrel/Microchip Ethernet Switch KSZ8794CNX with 3 RJ45 connectors

For more information about the K66F SoC and IP-K66F board:

Supported Features¶

The ip_k66f board configuration supports the following hardware features:

Interface	Controller	Driver/Component
NVIC	on-chip	nested vector interrupt controller
SYSTICK	on-chip	systick
PINMUX	on-chip	pinmux
GPIO	on-chip	gpio
WATCHDOG	on-chip	watchdog
FLASH	on-chip	soc flash
RTC	on-chip	rtc

The default configuration can be found in the defconfig file:

boards/arm/ip_k66f/ip_k66f_defconfig

Micrel/Microchip KSZ8794CNX Ethernet Switch is not currently supported.

Connections and IOs¶

The K66F SoC has five pairs of pinmux/gpio controllers.

Name	Function	Usage
PTA8	GPIO	Red LED
PTA10	GPIO	RED LED

System Clock¶

The K66F SoC is configured to use the 12 MHz low gain crystal oscillator on the board with the on-chip PLL to generate a 180 MHz system clock.

Serial Port¶

The K66F SoC has six UARTs. None of them are used.

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 the OpenSDA J-Link Onboard Debug Probe.

OpenSDA J-Link Onboard Debug Probe ¶

Install the J-Link Debug Host Tools and make sure they are in your search path.

Follow the instructions in OpenSDA J-Link Onboard Debug Probe to program the OpenSDA J-Link Generic Firmware for V3.2 Bootloader. Note that Segger does provide an OpenSDA J-Link Board-Specific Firmware for this board, however it is not compatible with the DAPLink bootloader.

The default flasher is jlink using the built-in SEGGER Jlink interface.

Flashing¶

Here is an example for the Blinky application.

# From the root of the zephyr repository
west build -b ip_k66f samples/basic/blinky
west flash

Red LED0 should blink at 1 second delay.

Debugging¶