.. _ip_k66f:

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

.. image:: ip_k66f.jpg
   :align: center
   :alt: IP-K66F

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:

- `K66F Website`_
- `K66F Datasheet`_
- `K66F Reference Manual`_
- `IP-K66F Website`_
- `IP-K66F User Guide`_
- `IP-K66F Schematics`_

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
:zephyr_file:`boards/segger/ip_k66f/ip_k66f_defconfig`

Micrel/Microchip KSZ8794CNX Ethernet Switch is supported
(see :zephyr:code-sample:`dsa` sample).

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 :ref:`build_an_application` and
:ref:`application_run` 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 :ref:`opensda-jlink-onboard-debug-probe`.

:ref:`opensda-jlink-onboard-debug-probe`
--------------------------------------------------

Install the :ref:`jlink-debug-host-tools` and make sure they are in your search
path.

Follow the instructions in :ref:`opensda-jlink-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 :zephyr:code-sample:`blinky` application.

.. zephyr-app-commands::
   :zephyr-app: samples/basic/blinky
   :board: ip_k66f
   :goals: flash

Red LED0 should blink at 1 second delay.

Debugging
=========

Here is an example for the :zephyr:code-sample:`blinky` application.

.. zephyr-app-commands::
   :zephyr-app: samples/basic/blinky
   :board: ip_k66f
   :goals: debug

Step through the application in your debugger.

.. _IP-K66F Website:
   https://www.segger.com/evaluate-our-software/segger/embosip-switch-board/

.. _IP-K66F User Guide:
   https://www.segger.com/downloads/emnet/UM06002

.. _IP-K66F Schematics:
   https://www.segger.com/downloads/emnet/embOSIP_SwitchBoard_V2.0_WEB_Schematic.pdf

.. _K66F Website:
   https://www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/k-series-cortex-m4/k6x-ethernet/kinetis-k66-180-mhz-dual-high-speed-full-speed-usbs-2mb-flash-microcontrollers-mcus-based-on-arm-cortex-m4-core:K66_180

.. _K66F Datasheet:
   https://www.nxp.com/docs/en/data-sheet/K66P144M180SF5V2.pdf

.. _K66F Reference Manual:
   https://www.nxp.com/webapp/Download?colCode=K66P144M180SF5RMV2

.. _OpenSDA J-Link Generic Firmware for V3.2 Bootloader:
   https://www.segger.com/downloads/jlink/OpenSDA_V3_2

Serial console
==============

The ``ip_k66f`` board only uses Segger's RTT console for providing serial
console. There is no physical serial port available.

- To communicate with this board one needs in one console:

``/opt/SEGGER/JLink_V664/JLinkRTTLogger -Device MK66FN2M0XXX18 -RTTChannel 1 -if SWD -Speed 4000 ~/rtt.log``

- In another one:

``nc localhost 19021``