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
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.
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
Build the Zephyr kernel and the
hello_worldsample application:west build -b atsame54_xpro samples/hello_worldConnect the SAM E54 Xplained Pro to your host computer using the USB debug port.
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
To flash an image:
west build -b atsame54_xpro samples/hello_world west flash
You should see “Hello World! arm” in your terminal.