.. _frdm_k64f:

NXP FRDM-K64F
##############

Overview
********

The Freedom-K64F is an ultra-low-cost development platform for Kinetis K64,
K63, and K24 MCUs.

- Form-factor compatible with the Arduino R3 pin layout
- Peripherals enable rapid prototyping, including a 6-axis digital
  accelerometer and magnetometer to create full eCompass capabilities, a
  tri-colored LED and 2 user push-buttons for direct interaction, a microSD
  card slot, and connectivity using onboard Ethernet port and headers for use
  with Bluetooth* and 2.4 GHz radio add-on modules
- OpenSDAv2, the NXP open source hardware embedded serial and debug adapter
  running an open source bootloader, offers options for serial communication,
  flash programming, and run-control debugging

.. image:: frdm_k64f.jpg
   :width: 720px
   :align: center
   :alt: FRDM-K64F

Hardware
********

- MK64FN1M0VLL12 MCU (120 MHz, 1 MB flash memory, 256 KB RAM, low-power,
  crystal-less USB, and 100 Low profile Quad Flat Package (LQFP))
- Dual role USB interface with micro-B USB connector
- RGB LED
- FXOS8700CQ accelerometer and magnetometer
- Two user push buttons
- Flexible power supply option - OpenSDAv2 USB, Kinetis K64 USB, and external source
- Easy access to MCU input/output through Arduino* R3 compatible I/O connectors
- Programmable OpenSDAv2 debug circuit supporting the CMSIS-DAP Interface
  software that provides:

  - Mass storage device (MSD) flash programming interface
  - CMSIS-DAP debug interface over a driver-less USB HID connection providing
    run-control debugging and compatibility with IDE tools
  - Virtual serial port interface
  - Open source CMSIS-DAP software project

- Ethernet
- SDHC

For more information about the K64F SoC and FRDM-K64F board:

- `K64F Website`_
- `K64F Datasheet`_
- `K64F Reference Manual`_
- `FRDM-K64F Website`_
- `FRDM-K64F User Guide`_
- `FRDM-K64F Schematics`_

Supported Features
==================

The frdm_k64f 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                                |
+-----------+------------+-------------------------------------+
| I2C       | on-chip    | i2c                                 |
+-----------+------------+-------------------------------------+
| SPI       | on-chip    | spi                                 |
+-----------+------------+-------------------------------------+
| WATCHDOG  | on-chip    | watchdog                            |
+-----------+------------+-------------------------------------+
| ADC       | on-chip    | adc                                 |
+-----------+------------+-------------------------------------+
| PWM       | on-chip    | pwm                                 |
+-----------+------------+-------------------------------------+
| ETHERNET  | on-chip    | ethernet                            |
+-----------+------------+-------------------------------------+
| UART      | on-chip    | serial port-polling;                |
|           |            | serial port-interrupt               |
+-----------+------------+-------------------------------------+
| FLASH     | on-chip    | soc flash                           |
+-----------+------------+-------------------------------------+
| SENSOR    | off-chip   | fxos8700 polling;                   |
|           |            | fxos8700 trigger                    |
+-----------+------------+-------------------------------------+

The default configuration can be found in the defconfig file:

	``boards/arm/frdm_k64f/frdm_k64f_defconfig``

Other hardware features are not currently supported by the port.

Connections and IOs
===================

The K64F SoC has five pairs of pinmux/gpio controllers.

+-------+-----------------+---------------------------+
| Name  | Function        | Usage                     |
+=======+=================+===========================+
| PTB22 | GPIO            | Red LED                   |
+-------+-----------------+---------------------------+
| PTE26 | GPIO            | Green LED                 |
+-------+-----------------+---------------------------+
| PTB21 | GPIO            | Blue LED                  |
+-------+-----------------+---------------------------+
| PTC6  | GPIO            | SW2 / FXOS8700 INT1       |
+-------+-----------------+---------------------------+
| PTC13 | GPIO            | FXOS8700 INT2             |
+-------+-----------------+---------------------------+
| PTA4  | GPIO            | SW3                       |
+-------+-----------------+---------------------------+
| PTB10 | ADC             | ADC1 channel 14           |
+-------+-----------------+---------------------------+
| PTB16 | UART0_RX        | UART Console              |
+-------+-----------------+---------------------------+
| PTB17 | UART0_TX        | UART Console              |
+-------+-----------------+---------------------------+
| PTC8  | PWM             | PWM_3 channel 4           |
+-------+-----------------+---------------------------+
| PTC9  | PWM             | PWM_3 channel 5           |
+-------+-----------------+---------------------------+
| PTC16 | UART3_RX        | UART BT HCI               |
+-------+-----------------+---------------------------+
| PTC17 | UART3_TX        | UART BT HCI               |
+-------+-----------------+---------------------------+
| PTD0  | SPI0_PCS0       | SPI                       |
+-------+-----------------+---------------------------+
| PTD1  | SPI0_SCK        | SPI                       |
+-------+-----------------+---------------------------+
| PTD2  | SPI0_SOUT       | SPI                       |
+-------+-----------------+---------------------------+
| PTD3  | SPI0_SIN        | SPI                       |
+-------+-----------------+---------------------------+
| PTE24 | I2C0_SCL        | I2C / FXOS8700            |
+-------+-----------------+---------------------------+
| PTE25 | I2C0_SDA        | I2C / FXOS8700            |
+-------+-----------------+---------------------------+
| PTA5  | MII0_RXER       | Ethernet                  |
+-------+-----------------+---------------------------+
| PTA12 | MII0_RXD1       | Ethernet                  |
+-------+-----------------+---------------------------+
| PTA13 | MII0_RXD0       | Ethernet                  |
+-------+-----------------+---------------------------+
| PTA14 | MII0_RXDV       | Ethernet                  |
+-------+-----------------+---------------------------+
| PTA15 | MII0_TXEN       | Ethernet                  |
+-------+-----------------+---------------------------+
| PTA16 | MII0_TXD0       | Ethernet                  |
+-------+-----------------+---------------------------+
| PTA17 | MII0_TXD1       | Ethernet                  |
+-------+-----------------+---------------------------+
| PTA28 | MII0_TXER       | Ethernet                  |
+-------+-----------------+---------------------------+
| PTB0  | MII0_MDIO       | Ethernet                  |
+-------+-----------------+---------------------------+
| PTB1  | MII0_MDC        | Ethernet                  |
+-------+-----------------+---------------------------+
| PTC16 | ENET0_1588_TMR0 | Ethernet                  |
+-------+-----------------+---------------------------+
| PTC17 | ENET0_1588_TMR1 | Ethernet                  |
+-------+-----------------+---------------------------+
| PTC18 | ENET0_1588_TMR2 | Ethernet                  |
+-------+-----------------+---------------------------+
| PTC19 | ENET0_1588_TMR3 | Ethernet                  |
+-------+-----------------+---------------------------+

.. note::
   Do not enable Ethernet and UART BT HCI simultaneously because they conflict
   on PTC16-17.

System Clock
============

The K64F SoC is configured to use the 50 MHz external oscillator on the board
with the on-chip PLL to generate a 120 MHz system clock.

Serial Port
===========

The K64F SoC has six UARTs. One is configured for the console, another for BT
HCI, and the remaining are not used.

Programming and Debugging
*************************

The FRDM-K64F includes the :ref:`nxp_opensda` serial and debug adapter built
into the board to provide debugging, flash programming, and serial
communication over USB.

To use the pyOCD tools with OpenSDA, follow the instructions in the
:ref:`nxp_opensda_pyocd` page using the `DAPLink FRDM-K64F Firmware`_. The
pyOCD tools are the default for this board, therefore it is not necessary to
set ``OPENSDA_FW=daplink`` explicitly when using the default flash and debug
mechanisms.

With these mechanisms, applications for the ``frdm_k64f`` board
configuration can be built and flashed in the usual way (see
:ref:`build_an_application` and :ref:`application_run` for more
details).

To use the Segger J-Link tools with OpenSDA, follow the instructions in the
:ref:`nxp_opensda_jlink` page using the `Segger J-Link OpenSDA V2.1 Firmware`_.
The Segger J-Link tools are not the default for this board, therefore it is
necessary to set ``OPENSDA_FW=jlink`` explicitly in the environment before
programming and debugging.

Flashing
========

This example uses the :ref:`hello_world` sample with the
:ref:`nxp_opensda_pyocd` tools.

.. zephyr-app-commands::
   :zephyr-app: samples/hello_world
   :board: frdm_k64f
   :goals: flash

Open a serial terminal (minicom, putty, etc.) with the following settings:

- Speed: 115200
- Data: 8 bits
- Parity: None
- Stop bits: 1

Reset the board and you should be able to see on the corresponding Serial Port
the following message:

.. code-block:: console

   Hello World! arm

Debugging
=========

You can debug an application in the usual way.  Here is an example for the
:ref:`hello_world` application.

.. zephyr-app-commands::
   :zephyr-app: samples/hello_world
   :board: frdm_k64f
   :maybe-skip-config:
   :goals: debug

.. _FRDM-K64F Website:
   http://www.nxp.com/products/software-and-tools/hardware-development-tools/freedom-development-boards/freedom-development-platform-for-kinetis-k64-k63-and-k24-mcus:FRDM-K64F

.. _FRDM-K64F User Guide:
   http://www.nxp.com/assets/documents/data/en/user-guides/FRDMK64FUG.pdf

.. _FRDM-K64F Schematics:
   http://www.nxp.com/assets/downloads/data/en/schematics/FRDM-K64F-SCH-E4.pdf

.. _K64F Website:
   http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/kinetis-cortex-m-mcus/k-series-performance-m4/k6x-ethernet/kinetis-k64-120-mhz-256kb-sram-microcontrollers-mcus-based-on-arm-cortex-m4-core:K64_120

.. _K64F Datasheet:
   http://www.nxp.com/assets/documents/data/en/data-sheets/K64P144M120SF5.pdf

.. _K64F Reference Manual:
   http://www.nxp.com/assets/documents/data/en/reference-manuals/K64P144M120SF5RM.pdf

.. _DAPLink FRDM-K64F Firmware:
   http://www.nxp.com/assets/downloads/data/en/ide-debug-compile-build-tools/OpenSDAv2.2_DAPLink_frdmk64f_rev0242.zip

.. _Segger J-Link OpenSDA V2.1 Firmware:
   https://www.segger.com/downloads/jlink/OpenSDA_V2_1.bin