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.

Hardware

  • SAME54P20A 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 same54_xpro board configuration supports the following hardware features:

Interface

Controller

Driver/Component

ADC

on-chip

adc

DAC

on-chip

dac

DMAC

on-chip

dma

EEPROM

i2c

eeprom, EUI-48 MAC Address

EIC

on-chip

interrupt_controller

GMAC

on-chip

ethernet, mdio

GPIO

on-chip

gpio

MPU

on-chip

arch/arm

NVIC

on-chip

arch/arm

NVMCTRL

on-chip

flash

PORT

on-chip

pinctrl

RTC

on-chip

timer

SERCOM I2C

on-chip

i2c

SERCOM SPI

on-chip

spi

SERCOM USART

on-chip

serial, console

Serial Number

on-chip

hwinfo

SYSTICK

on-chip

timer

TC

on-chip

counter

TCC

on-chip

counter, pwm

TRNG

on-chip

entropy

USB

on-chip

usb

WDT

on-chip

watchdog

Other hardware features are not currently supported by Zephyr.

The default configuration can be found in the Kconfig boards/atmel/sam0/same54_xpro/same54_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].

SAME54-XPRO-pinout

Default Zephyr Peripheral Mapping:

  • SERCOM2 USART TX : PB24

  • SERCOM2 USART RX : PB25

  • GPIO/PWM LED0 : PC18

  • GPIO SW0 : PB31

  • GMAC RMII REFCK : PA14

  • GMAC RMII TXEN : PA17

  • GMAC RMII TXD0 : PA18

  • GMAC RMII TXD1 : PA19

  • GMAC RMII CRSDV : PC20

  • GMAC RMII RXD0 : PA13

  • GMAC RMII RXD1 : PA12

  • GMAC RMII RXER : PA15

  • GMAC MDIO MDC : PC11

  • GMAC MDIO MDIO : PC12

  • SERCOM4 SPI SCK : PB26

  • SERCOM4 SPI MOSI : PB27

  • SERCOM4 SPI MISO : PB29

  • SERCOM7 I2C SDA : PD08

  • SERCOM7 I2C SCL : PD09

  • USB DP : PA25

  • USB DM : PA24

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 same54_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 same54_xpro samples/hello_world
west flash

    You should see “Hello World! same54_xpro” in your terminal.

References