182 lines
6.7 KiB
ReStructuredText
182 lines
6.7 KiB
ReStructuredText
.. _frdm_kw41z:
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NXP FRDM-KW41Z
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##############
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Overview
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********
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The FRDM-KW41Z is a development kit enabled by the Kinetis® W series
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KW41Z/31Z/21Z (KW41Z) family built on ARM® Cortex®-M0+ processor with
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integrated 2.4 GHz transceiver supporting Bluetooth® Smart/Bluetooth®Low Energy
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(BLE) v4.2, Generic FSK, IEEE® 802.15.4 and Thread.
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The FRDM-KW41Z kit contains two Freedom boards that can be used as a
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development board or a shield to connect to a host processor. The FRDM-KW41Z is
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form-factor compatible with the Arduino™ R3 pin layout for more expansion
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options.
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The FRDM-KW41Z highly-sensitive, optimized 2.4 GHz radio features a PCB
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F-antenna which can be bypassed to test via SMA connection, multiple power
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supply options, push/capacitive touch buttons, switches, LEDs and integrated
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sensors.
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.. image:: frdm_kw41z.jpg
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:width: 720px
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:align: center
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:alt: FRDM-KW41Z
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Hardware
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********
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- Can be configured as Host or Shield for connection to Host Processor
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- Supports all DC-DC configurations (Buck, Boost, Bypass)
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- PCB inverted F-type antenna
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- SMA RF Connector
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- RF regulatory certified
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- Serial Flash for OTA firmware upgrades
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- On board NXP FXOS8700CQ digital sensor, 3D Accelerometer (±2g/±4g/±8g) + 3D
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Magnetometer
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- OpenSDA and JTAG debug
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For more information about the KW41Z SoC and FRDM-KW41Z board:
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- `KW41Z Website`_
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- `KW41Z Datasheet`_
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- `KW41Z Reference Manual`_
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- `FRDM-KW41Z Website`_
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- `FRDM-KW41Z User Guide`_
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- `FRDM-KW41Z Schematics`_
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Supported Features
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==================
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The frdm_kw41z board configuration supports the following hardware features:
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+-----------+------------+-------------------------------------+
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| Interface | Controller | Driver/Component |
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+===========+============+=====================================+
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| NVIC | on-chip | nested vector interrupt controller |
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+-----------+------------+-------------------------------------+
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| SYSTICK | on-chip | systick |
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+-----------+------------+-------------------------------------+
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| PINMUX | on-chip | pinmux |
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+-----------+------------+-------------------------------------+
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| GPIO | on-chip | gpio |
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+-----------+------------+-------------------------------------+
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| I2C | on-chip | i2c |
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+-----------+------------+-------------------------------------+
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| UART | on-chip | serial port-polling; |
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| | | serial port-interrupt |
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+-----------+------------+-------------------------------------+
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| FLASH | on-chip | soc flash |
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+-----------+------------+-------------------------------------+
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| SENSOR | off-chip | fxos8700 polling: |
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| | | fxos8700 trigger |
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+-----------+------------+-------------------------------------+
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The default configuration can be found in the defconfig file:
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``boards/arm/frdm_kw41z/frdm_kw41z_defconfig``
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Other hardware features are not currently supported by the port.
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Connections and IOs
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===================
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The KW41Z SoC has three pairs of pinmux/gpio controllers, but only two are
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currently enabled (PORTA/GPIOA and PORTC/GPIOC) for the FRDM-KW41Z board.
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+-------+-------------+---------------------------+
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| Name | Function | Usage |
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+=======+=============+===========================+
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| PTC1 | GPIO | Red LED / FXOS8700 INT1 |
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+-------+-------------+---------------------------+
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| PTA19 | GPIO | Green LED |
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+-------+-------------+---------------------------+
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| PTA18 | GPIO | Blue LED |
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+-------+-------------+---------------------------+
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| PTC2 | I2C1_SCL | I2C / FXOS8700 |
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+-------+-------------+---------------------------+
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| PTC3 | I2C1_SDA | I2C / FXOS8700 |
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+-------+-------------+---------------------------+
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| PTC4 | GPIO | SW3 |
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+-------+-------------+---------------------------+
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| PTC5 | GPIO | SW4 |
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+-------+-------------+---------------------------+
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| PTC6 | LPUART0_RX | UART Console |
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+-------+-------------+---------------------------+
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| PTC7 | LPUART0_TX | UART Console |
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+-------+-------------+---------------------------+
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System Clock
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============
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The KW41Z SoC is configured to use the 32 MHz external oscillator on the board
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with the on-chip FLL to generate a 40 MHz system clock.
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Serial Port
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===========
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The KW41Z SoC has one UART, which is used for the console.
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Programming and Debugging
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*************************
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Flashing
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========
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The FRDM-KW41Z includes an `OpenSDA`_ serial and debug adaptor built into the
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board. The adaptor provides:
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- A USB connection to the host computer, which exposes a Mass Storage and an
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USB Serial Port.
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- A Serial Flash device, which implements the USB flash disk file storage.
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- A physical UART connection which is relayed over interface USB Serial port.
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Flashing an application to FRDM-KW41Z
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-------------------------------------
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The sample application :ref:`hello_world` is used for this example.
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Build the Zephyr kernel and application:
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.. code-block:: console
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$ cd $ZEPHYR_BASE
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$ . zephyr-env.sh
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$ cd $ZEPHYR_BASE/samples/hello_world/
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$ make BOARD=frdm_kw41z
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Connect the FRDM-KW41Z to your host computer using the USB port and you should
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see a USB connection which exposes a Mass Storage (DAPLINK) and a USB Serial
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Port. Copy the generated zephyr.bin in the DAPLINK drive.
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Reset the board and you should be able to see on the corresponding Serial Port
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the following message:
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.. code-block:: console
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Hello World! arm
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.. _FRDM-KW41Z Website:
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http://www.nxp.com/products/microcontrollers-and-processors/more-processors/application-specific-mcus-mpus/bluetooth-low-energy-ble/nxp-freedom-development-kit-for-kinetis-kw41z-31z-21z-mcus:FRDM-KW41Z
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.. _FRDM-KW41Z User Guide:
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http://www.nxp.com/assets/documents/data/en/user-guides/FRDMKW41ZUG.pdf
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.. _FRDM-KW41Z Schematics:
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http://www.nxp.com/assets/downloads/data/en/schematics/FRDM-KW41Z-SCH.pdf
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.. _OpenSDA:
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http://www.nxp.com/products/software-and-tools/hardware-development-tools/startertrak-development-boards/opensda-serial-and-debug-adapter:OPENSDA#FRDM-KW41Z
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.. _KW41Z Website:
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http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/kinetis-cortex-m-mcus/w-series-wireless-m0-plus-m4/kinetis-kw41z-2.4-ghz-dual-mode-ble-and-802.15.4-wireless-radio-microcontroller-mcu-based-on-arm-cortex-m0-plus-core:KW41Z
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.. _KW41Z Datasheet:
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http://www.nxp.com/assets/documents/data/en/data-sheets/MKW41Z512.pdf
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.. _KW41Z Reference Manual:
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http://www.nxp.com/assets/documents/data/en/reference-manuals/MKW41Z512RM.pdf
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