SAM4L WM-400 Cape Board

Overview

The SAM4L WM-400 Cape is a full featured design to enable IEEE 802.15.4 low power nodes. It is a Beaglebone Black cape concept with an Atmel AT86RF233 radio transceiver. User can develop Touch interface and have access to many sensors and connectivity buses.

Hardware

  • ATSAM4LC4B ARM Cortex-M4 Processor

  • 12 MHz crystal oscillator

  • 32.768 kHz crystal oscillator

  • 1 RS-232 interface

  • 1 RS-485 full duplex interface

  • Micro-AB USB OTG host/device

  • 1 user touch button and One user pushbutton

  • 4 user LEDs

  • 1 AT86RF233 IEEE 802.15.4 transceiver

  • 1 MPL115A2 I²C Barometric Pressure/Temperature Sensor

  • 1 VCNL4010 Proximity/Light Sensor

  • 1 CC2D33S Advanced Humidity Temperature Sensor

  • 1 NCP18WF104J03RB NTC Temperature Sensor

  • 1 TEMT6000X01 Ambient Light Sensor

Supported Features

The sam4l_wm400_cape 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.

Connections and IOs

For detailed information see SAM4L WM-400 Cape [1] Information.

System Clock

The SAM4L MCU is configured to use the 12 MHz internal oscillator on the board with the on-chip PLL to generate an 48 MHz system clock.

Serial Port

The ATSAM4LC4B MCU has 4 USARTs. One of the USARTs (USART3) is shared between RS-232 and RS-485 interfaces. The default console terminal is available at RS-232 onboard port or via USB device.

Programming and Debugging

The sam4l_wm400_cape board supports the runners and associated west commands listed below.

flash debug

The SAM4L WM-400 Cape board has a 10-pin header to connect to a Segger JLink. Using the JLink is possible to program and debug the SAM4LC4B chip. The board came with a SAM-BA bootloader that only can be used to flash the software.

Flashing

  1. For JLink instructions, see J-Link Debug Host Tools.

  2. Run your favorite terminal program to listen for output. Under Linux the terminal should be /dev/ttyACM0. For example:

    $ minicom -D /dev/ttyACM0 -o

    The -o option tells minicom not to send the modem initialization string. Connection should be configured as follows:

    • Speed: 115200

    • Data: 8 bits

    • Parity: None

    • Stop bits: 1

  3. Connect the SAM4L WM-400 Cape board to your host computer using the USB debug port. Then build and flash the Hello World application.

    # From the root of the zephyr repository
west build -b sam4l_wm400_cape samples/hello_world
west flash

    You should see Hello World! sam4l_wm400_cape in your terminal.

  4. For SAM-BA bootloader instructions, see SAM Boot Assistant (SAM-BA).

  5. Connect the SAM4L WM-400 Cape board to your host computer using the USB debug port pressing the S1 button. Then build and flash the Hello World application. After programming the board the application will start automatically.

    # From the root of the zephyr repository
west build -b sam4l_wm400_cape samples/hello_world
west flash -r bossac

Debugging

You can debug an application in the usual way. Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b sam4l_wm400_cape samples/hello_world
west debug

References