| .. _sam4l_ek: |
| |
| SAM4L-EK |
| ######## |
| |
| Overview |
| ******** |
| |
| The SAM4L series embeds picoPower technology for ultra-low power consumption. |
| Combined power control techniques are used to bring active current consumption |
| down to 90μA/MHz. The device allows a wide range of configurations giving the |
| user the ability to balance between the lowest possible power consumption and |
| the feature set selected for the application. The WAIT and RETENTION modes |
| provide full logic and RAM retention, associated with fast wake-up capability |
| (<1.5μs) and a very low consumption of, respectively, 3 μA and 1.5 μA. In |
| addition, WAIT mode supports SleepWalking features. In BACKUP mode, CPU, |
| peripherals and RAM are powered off consuming less than 0.9μA with external |
| interrupt wake-up support. |
| |
| The SAM4L-EK is a full featured design to develop for Atmel SAM4L SoC series. |
| The kit is equipped with a rich set of peripherals that make the ATSAM4L-EK a |
| perfect evaluation platform. Download the `SAM4L-EK Online User Guide`_ for |
| more details. |
| |
| .. image:: img/atmel-sam4l-ek-callouts.jpeg |
| :width: 500px |
| :align: center |
| :alt: SAM4L-EK |
| |
| Hardware |
| ******** |
| |
| - ATSAM4LC4C ARM Cortex-M4 Processor |
| - 12 MHz crystal oscillator |
| - 32.768 kHz crystal oscillator |
| - 1 Micro-AB USB OTG host/device |
| - 1 AT86RF2xx IEEE 802.15.4 transceiver connector |
| - 1 RS-485 full duplex interface |
| - 1 Sensor Xplained board connector |
| - 1 Audio Jack connector 3.5mm |
| - 1 Dedicated Board Monitor MCU |
| |
| - Power measurement (VDDIN, VDDIO, VDDANA) |
| - 1 OLED Display (128x64) |
| - 5 LEDs |
| - 1 Joystick |
| - 1 USART |
| - 1 TWI |
| - 1 40x4 LCD Segment Display |
| - 1 user touch button and One user pushbutton |
| - 1 user LED |
| - 1 QTouch Slider |
| - 1 QTouch Button |
| - 1 TEMT6000 Light Sensor |
| - 1 AT25DF641A Serial NOR Flash |
| |
| Supported Features |
| ================== |
| |
| The sam4l_ek board configuration supports the following hardware features: |
| |
| +-----------+------------+-------------------------------------+ |
| | Interface | Controller | Driver/Component | |
| +===========+============+=====================================+ |
| | GPIO | on-chip | gpio | |
| +-----------+------------+-------------------------------------+ |
| | HWINFO | on-chip | Unique 120 bit serial number | |
| +-----------+------------+-------------------------------------+ |
| | MPU | on-chip | arch/arm | |
| +-----------+------------+-------------------------------------+ |
| | NVIC | on-chip | arch/arm | |
| +-----------+------------+-------------------------------------+ |
| | SPI | on-chip | spi | |
| +-----------+------------+-------------------------------------+ |
| | SYSTICK | on-chip | systick | |
| +-----------+------------+-------------------------------------+ |
| | TRNG | on-chip | 32-bit True Random Number Generator | |
| +-----------+------------+-------------------------------------+ |
| | TWIM | on-chip | i2c master port-interrupt | |
| +-----------+------------+-------------------------------------+ |
| | USART | on-chip | serial port | |
| +-----------+------------+-------------------------------------+ |
| |
| Other hardware features are not currently supported by Zephyr. |
| |
| The default configuration can be found in the Kconfig |
| :zephyr_file:`boards/arm/sam4l_ek/sam4l_ek_defconfig`. |
| |
| Connections and IOs |
| =================== |
| |
| The `SAM4L-EK Design Documentation`_ has detailed information about board |
| connections. Download the `SAM4L-EK Design Documentation`_ for more details. |
| |
| 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 ATSAM4LC4C MCU has 4 USARTs. One of the USARTs (USART2) is connected on |
| the embedded debug unit and can works as a console. The USART0 is shared |
| between all others headers and RS-485 port. |
| |
| Programming and Debugging |
| ************************* |
| |
| The SAM4L-EK board have a Segger Embedded Debugger Unit |
| `J-Link OB <https://www.segger.com/jlink-ob.html>`_. This provides a debug |
| interface to the SAM4LC4C chip. You can use Ozone or JLink to communicate with |
| the SAM4LC4C. |
| |
| Flashing |
| ======== |
| |
| #. Download JLink from the Segger `JLink Downloads Page`_. Go to the section |
| "J-Link Software and Documentation Pack" and install the "J-Link Software |
| and Documentation pack for Linux". The application JLinkExe needs to be |
| accessible from your path. |
| |
| #. Run your favorite terminal program to listen for output. Under Linux the |
| terminal should be :code:`/dev/ttyACM0`. For example: |
| |
| .. code-block:: console |
| |
| $ 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 |
| |
| #. Connect the SAM4L-EK board to your host computer using the USB debug port. |
| Then build and flash the :ref:`hello_world` application. |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/hello_world |
| :board: sam4l_ek |
| :goals: build flash |
| |
| You should see "Hello World! sam4l_ek" in your terminal. |
| |
| 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: sam4l_ek |
| :maybe-skip-config: |
| :goals: debug |
| |
| References |
| ********** |
| |
| .. target-notes:: |
| |
| .. _SAM4L-EK Online User Guide: |
| http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-42026-ATSAM4L-EK-User-Guide_ApplicationNote_AVR32850.pdf |
| |
| .. _SAM4L-EK Design Documentation: |
| http://ww1.microchip.com/downloads/en/DeviceDoc/doc42027_SAM4L-EK_Design_Documentation.PDF |
| |
| .. _JLink Downloads Page: |
| https://www.segger.com/downloads/jlink |