This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

SAM E54 Xplained Pro Evaluation Kit

Overview

The SAM E54 Xplained Pro evaluation kit is ideal for evaluation and prototyping with the SAM E54 Cortex®-M4F processor-based microcontrollers. The kit includes Atmel’s Embedded Debugger (EDBG), which provides a full debug interface without the need for additional hardware.

ATSAME54-XPRO

Hardware

  • ATSAME54P20A ARM Cortex-M4F processor at 120 MHz

  • 32.768 kHz crystal oscillator

  • 12 MHz crystal oscillator

  • 1024 KiB flash memory and 256 KiB of RAM

  • One yellow user LED

  • One mechanical user push button

  • One reset button

  • On-board USB based EDBG unit with serial console

  • One QTouch® PTC button

  • 32 MiB QSPI Flash

  • ATECC508 CryptoAuthentication™ device

  • AT24MAC402 serial EEPROM with EUI-48™ MAC address

  • Ethernet

    • RJ45 connector with built-in magnetics

    • KSZ8091RNA PHY

    • 10Base-T/100Base-TX IEE 802.3 compliant Ethernet transceiver

  • USB interface, host, and device

  • SD/SDIO card connector

Supported Features

The atsame54_xpro board configuration supports the following hardware features:

Interface

Controller

Driver/Component

NVIC

on-chip

nested vector interrupt controller

SYSTICK

on-chip

systick

WDT

on-chip

Watchdog

GPIO

on-chip

I/O ports

PWM

on-chip

Pulse Width Modulation

USART

on-chip

Serial ports

SPI

on-chip

Serial Peripheral Interface ports

I2C

on-chip

Serial Peripheral Interface ports

Other hardware features are not currently supported by Zephyr.

The default configuration can be found in the Kconfig boards/arm/atsame54_xpro/atsame54_xpro_defconfig.

Pin Mapping

The SAM E54 Xplained Pro evaluation kit has 4 GPIO controllers. These controllers are responsible for pin muxing, input/output, pull-up, etc.

For more details please refer to SAM D5x/E5x Family Datasheet 1 and the SAM E54 Xplained Pro Schematic 2.

ATSAME54-XPRO-pinout

Default Zephyr Peripheral Mapping:

  • SERCOM2 USART TX : PB24

  • SERCOM2 USART RX : PB25

  • GPIO/PWM LED0 : PC18

  • GPIO SW0 : PB31

System Clock

The SAME54 MCU is configured to use the 32.768 kHz external oscillator with the on-chip PLL generating the 48 MHz system clock.

Serial Port

The SAME54 MCU has 8 SERCOM based USARTs with one configured as USARTs in this BSP. SERCOM2 is the default Zephyr console.

  • SERCOM2 115200 8n1 connected to the onboard Atmel Embedded Debugger (EDBG)

PWM

The SAME54 MCU has 5 TCC based PWM units with up to 6 outputs each and a period of 24 bits or 16 bits. If CONFIG_PWM_SAM0_TCC is enabled then LED0 is driven by TCC0 instead of by GPIO.

SPI Port

The SAME54 MCU has 8 SERCOM based SPIs.

I2C Port

The SAME54 MCU has 8 SERCOM based I2Cs. On the SAM E54 Xplained Pro, SERCOM7 is connected to a AT24MAC402 EEPROM and a ATECC508A Crypto Authentication device.

Programming and Debugging

The SAM E54 Xplained Pro comes with a Atmel Embedded Debugger (EDBG). This provides a debug interface to the SAME54 chip and is supported by OpenOCD.

Flashing

  1. Build the Zephyr kernel and the hello_world sample application:

    west build -b atsame54_xpro samples/hello_world

  2. Connect the SAM E54 Xplained Pro to your host computer using the USB debug port.

  3. 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

  4. To flash an image:

    west build -b atsame54_xpro samples/hello_world
west flash

    You should see “Hello World! arm” in your terminal.