Microchip SAML11 Xplained Pro

Caution

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Tip

When using this board with RIOT, set the BOARD variable to saml11-xpro in your Makefile. If you follow the standard RIOT project structure, your Makefile should look like this:

./Makefile

# name of your application
APPLICATION = hello-world

# Change this to your board if you want to build for a different board
BOARD ?= saml11-xpro

# This has to be the absolute path to the RIOT base directory:
RIOTBASE ?= $(CURDIR)/RIOT

include $(RIOTBASE)/Makefile.include

Support for the Microchip SAML11 Xplained Pro board.

Overview

The SAML11 Xplained Pro is an ultra-low power evaluation board by Microchip featuring a ATSAML11E16A SoC. The SoC includes a SAML11 ARM Cortex-M23 micro- controller. For programming the MCU comes with 16KB of RAM and 64KB of flash memory. In addition, this SoC features the ARM TrustZone technology.

Hardware

MCU

MCU	ATSAML11E14A
Family	ARM Cortex-M23
Vendor	Microchip
RAM	16KB
Flash	64KB
Frequency	up to 32MHz
FPU	no
Timers	3 (16-bit)
ADCs	1x 12-bit (10 channels)
UARTs	max 3 (shared with SPI and I2C)
SPIs	max 3 (see UART)
I2Cs	max 3 (see UART)
Vcc	1.6V - 3.6V
Datasheet	Datasheet
Board Manual	Board Manual

User Interface

1 User button and 1 LED:

Device	PIN
LED0	PA07
SW0 (button)	PA27

Implementation Status

Device	ID	Supported	Comments
MCU	saml11	partly	PLL clock not implemented
Low-level driver	GPIO	yes
	PWM	no
	UART	yes
	I2C	yes
	SPI	yes
	USB	no
	RTT	yes
	RTC	yes
	RNG	yes
	Timer	yes
	ADC	yes

Flashing the device

Connect the device to your Micro-USB cable.

The standard method for flashing RIOT to the saml11-xpro is using EDBG.

Special case

SERCOM1 (available on EXT1 connector) needs an extra step to be usable. By default, this SERCOM is only available in the secure world. As RIOT doesn’t support it for now, the only option, to use it, is to enable SERCOM non-secure mode. To do so, a fuse bit must be set in User ROW flash memory. Such action can be done with the following EDBG command: ‘edbg -t saml11 -F w0,194,1’ or pass it as argument when calling make: EDBG_ARGS=“-F w0,194,1” BOARD=saml11-xpro make flash term -C tests/periph/uart