View detail for Atmel AT09886: SAM L22 Getting Started Guide

View detail for Atmel AT09886: SAM L22 Getting Started Guide
SMART ARM-based Microcontrollers
AT09886: SAM L22 Getting Started Guide
APPLICATION NOTE
Introduction
This application note aims at helping the reader to get started with the
®
®
®
Atmel SAM L22 ARM Cortex -M0+ based Ultra low-power segment LCD
microcontroller.
Atmel | SMART SAM L22 is a series of Ultra low-power segment LCD
microcontrollers using the 32-bit ARM Cortex-M0+ processor, ranging from
48- to 100-pins with up to 256KB Flash and 32KB of SRAM and to drive up
to 320 LCD segments. The SAM L22 devices operate at a maximum
frequency of 32MHz and reach 2.14 Coremark/ MHz. With sophisticated
power management technologies the SAM L22 devices run below
50μA/MHz in active mode and below 600nA in ultra-low-power backup mode
with RTC.
SAM L22 is targeted for segment LCD and/or Battery powered applications,
like sport watches, personal healthcare devices, thermostat with user
interface, access control panels and metering (gas, water, energy metering,
and basic smart meter) applications.
Features
•
•
Getting started with Atmel SAM L22 microcontrollers
Getting started with Atmel SAM L22 tools (Atmel SAM L22 Xplained
PRO, Atmel Software Framework 3.26.10 or later, and Atmel Studio
6.2 or later)
Atmel-42494A-SAML22-Getting-Started-Guide_AT9886_Application Note-08/2015
Table of Contents
Introduction......................................................................................................................1
Features.......................................................................................................................... 1
1. Configuration Summary............................................................................................. 3
2. Getting the Device Datasheet....................................................................................4
3. Get the SAM L22 Xplained Pro Evaluation Kit...........................................................5
4. Get the Tools..............................................................................................................7
4.1.
4.2.
4.3.
4.4.
4.5.
Get Atmel Studio 6....................................................................................................................... 7
Get IAR Embedded Workbench for ARM..................................................................................... 7
Get SAM L22 Xplained Pro Embedded Debugger Software (Segger J-Link).............................. 7
Get Atmel Software Framework (ASF)......................................................................................... 7
Atmel Studio 6.2 Users Getting Started........................................................................................7
5. What’s Next?............................................................................................................11
6. Revision History.......................................................................................................12
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1.
Configuration Summary
Table 1-1 Comparison Between SAM L22, SAM L21, and SAM D21 on page 3 shows the difference
between SAM L22, SAM L21, and SAM D21 features. For more details, refer to the datasheet of the
respective products.
Table 1-1 Comparison Between SAM L22, SAM L21, and SAM D21
Features
SAM L22N
SAM L22J
SAM L22G
SAM L21J
SAM L21G
SAM L21E
SAM D21J
SAM D21G
SAM D21E
Pins
100
64
48
64
48
32
64
48
32
GPIO(s)
82
50
36
51
37
25
52
26
26
Flash
256/128/64KB 256/128/64KB 256/128/64KB 256/128/64KB 256/128/64KB 256/128/64/32KB 256/128/64/32KB 256/128/64/32KB 256/128/64/32KB
Flash RWW section
8/4/2KB
8/4/2KB
8/4/2KB
8/4/2KB
8/4/2KB
8/4/2/1KB
2KB/ 1KB in
2KB/ 1KB in
2KB/ 1KB in
32KB and 64KB 32KB and 64KB 32KB and 64KB
Flash variants
Flash variants
Flash variants
System SRAM
32/16/8KB
32/16/8KB
32/16/8KB
32/16/8KB
32/16/8KB
32/16/8/4KB
32/16/8/4KB
32/16/8/4KB
32/16/8/4KB
Low Power SRAM
-
-
-
8/8/4KB
8/8/4KB
8/8/4/2KB
-
-
-
Segment LCD (SLCD)
Pins
48
31
23
-
-
-
-
-
-
Timer Counter (TC)
4
4
4
5
3
3
5
3
3
Timer Counter for
Control (TCC)
1
1
1
3
3
3
3
3
3
DMA channels
16
16
16
16
16
16
12
12
12
USB interface
1
1
1
1
1
1
1
1
1
AES engine
1
1
1
1
1
1
-
-
-
Configurable Custom
Logic (CCL) (LUTs)
4
4
4
4
4
4
-
-
-
True Random Generator 1
(TRNG)
1
1
1
1
1
-
-
-
SERCOM
6
4
3
6
6
4
6
6
4
ADC channels
20
16
10
20
14
10
20
14
10
Analog Comparators
2
2
2
2
2
2
2
2
2
DAC Channels
-
-
-
2
2
2
1
1
1
Op-Amp
-
-
-
3
3
3
-
-
-
Tamper Input Pins
5
3
2
-
-
-
RTC
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
RTC alarms
1
1
1
1
1
1
1
1
1
External Interrupt lines
16
16
16
16
16
16
16
16
16
PTC channels for mutual 256 (16x16)
capacitance
182 (13x14)
110 (10x11)
12x16 16x12 8x12 12x8
6x10 10x6
16x16
12x10
10x6
PTC channels for self
capacitance
24
19
13
16
12
10
16
16
6
Maximum CPU
frequency
32MHz
32MHz
32MHz
48MHz
48MHz
48MHz
48MHz
48MHz
48MHz
Packages
TQFP
QFN TQFP
QFN TQFP
QFN TQFP
QFN TQFP
QFN TQFP
QFN TQFP
QFN TQFP
QFN TQFP
Event System channels 8
8
8
12
12
12
12
12
12
SW Debug Interface
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
WDT
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Atmel AT09886: SAM L22 Getting Started Guide [APPLICATION NOTE]
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2.
Getting the Device Datasheet
Web page: http://www.atmel.com/products/microcontrollers/arm/sam-l.aspx?tab=documents
Document: Atmel SAM L22 Datasheet (summary, complete) (.pdf)
Select the latest datasheet (.pdf file). There are two versions:
•
•
Complete version (includes all peripheral descriptions and electrical characteristics)
Summary version (includes Ordering Information, pinout and Packaging Information)
Atmel AT09886: SAM L22 Getting Started Guide [APPLICATION NOTE]
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3.
Get the SAM L22 Xplained Pro Evaluation Kit
Web page: http://www.atmel.com/products/microcontrollers/arm/sam-l.aspx?tab=tools
Get the kit: http://store.atmel.com
Figure 3-1 SAML22 Xplained Pro Picture
Document:
•
SAM L22 Xplained Pro User Guide application note (.pdf) available in http://www.atmel.com/tools/
ATSAML22-XPRO.aspx?tab=documents
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Key features:
•
•
•
•
•
•
•
ATSAML22N18A microcontroller
One mechanical reset button
One user button (wake-up, bootloader entry or general purpose)
One Yellow user LED (LED0)
USB Device interface function
®
One QTouch Button
Segment LCD connector with additional lines for touch
•
•
•
•
•
•
•
ATAES132 Crypto Authentication
32.768kHz crystal
Standard Cortex Debug connector
3 Xplained Pro extension headers (EXT1, EXT2, and EXT3)
USB powered
Supported with application examples in Atmel Software Framework
Embedded Debugger
– Auto ID for board identification in Atmel Studio 6.2
– Programming/debugging of target via SWD
– Data gateway interface to target (SPI & TWI)
– Four GPIOs connected to target
– One yellow EDBG status LED
– One green board power LED (controlled by EDBG)
– Virtual COM-port interface via UART
Embedded current measurement circuitry, with Atmel Data Visualizer support for data visualization
Arduino extension footprint
The SAM L22 Xplained Pro User Guide application note covers how to power the kit, the detailed
information of the on board components, extension interface and the hardware guide.
•
•
Atmel AT09886: SAM L22 Getting Started Guide [APPLICATION NOTE]
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4.
Get the Tools
Atmel Studio 6.2 is the preferred IDE to get started with the SAM L22 device and GCC compiler. Atmel
™
Software Framework (ASF) provides SAM L22 peripheral drivers and example projects. IAR compiler is
supported as well.
4.1.
Get Atmel Studio 6
Web page: www.atmel.com/atmelstudio
Document/ file:
•
Atmel Studio 6.2 installer (.exe)
Atmel Studio 6.2 is the IDE for developing and debugging firmware for the SAM L22 microcontroller.
4.2.
Get IAR Embedded Workbench for ARM
Web page: http://www.iar.com/en/Products/IAR-Embedded-Workbench/ARM/
Document/file:
•
4.3.
IAR installer for ARM
Get SAM L22 Xplained Pro Embedded Debugger Software (Segger J-Link)
Web page: http://www.segger.com/jlink-software.html
Document/file:
•
J-Link software
This software is required to program/debug the SAM L22 Xplained Pro embedded debugger with IAR
IDE.
4.4.
Get Atmel Software Framework (ASF)
Web page: www.atmel.com/asf
Document/file:
•
•
•
•
•
•
•
4.5.
ASF update for Atmel Studio (.vsix) from ASF web page
ASF update through Atmel Gallery https://gallery.atmel.com/ for version 3.26.10 and above
ASF update through Tools>Extension Manager from Atmel Studio
ASF standalone package for GCC makefile and IAR users
ASF: Getting started (.pdf)
ASF: Reference Manual (.pdf)
ASF online documentation for available API and examples can be found at http://asf.atmel.com
Atmel Studio 6.2 Users Getting Started
Prerequisites:
Atmel AT09886: SAM L22 Getting Started Guide [APPLICATION NOTE]
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•
•
•
Atmel Studio 6.2 SP2 or above installed
ASF version 3.26.10 or above installed
SAM L22 Xplained Pro board connected to PC through embedded debugger USB connector. The
kit is powered through USB.
Getting started with Atmel Studio 6.2, ASF, and SAM L22 Xplained Pro:
•
•
•
Launch Atmel Studio 6.2
Connect the SAM L22 Xplained Pro board to the PC using a USB cable
A page on SAM L22 Xplained Pro description will open in Atmel Studio
•
This page contains external link to Device Technical Documentation, Datasheet, Kit user guide, and
Kit specific details like serial number and target name. Also, there will be an option to open ASF
example projects.
To open ASF examples, click File-> New -> then Example Project.
•
Figure 4-1 Creating New Example Project in Atmel Studio
•
Select ‘Getting started application-SAM L22 Xplained Pro’ as shown in Figure 4-2 SAML22 Getting
started Project Selection on page 9, press OK and accept the license agreement. Then the
project will be created and opened
Atmel AT09886: SAM L22 Getting Started Guide [APPLICATION NOTE]
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Figure 4-2 SAML22 Getting started Project Selection
•
•
Open project properties (Project -> Properties or shortcut Alt+f7)
In Tool view, set ‘Select debugger/programmer’ to XPRO-EDBG and interface to SWD as shown in
Figure 4-3 SAML22 Atmel Studio – Tools Configuration on page 9
Figure 4-3 SAML22 Atmel Studio – Tools Configuration
•
Build the project: Build -> Build solution or shortcut F7
Atmel AT09886: SAM L22 Getting Started Guide [APPLICATION NOTE]
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•
•
•
•
•
•
To load the code in the SAM L22 Xplained Pro and debug, select Debug -> Start debugging and
break (shortcut Alt + F5)
The application is programmed and the debugger breaks in main
To run the code, select Debug -> Continue (shortcut F5)
®
On the computer, open and configure a terminal application (e.g. HyperTerminal on Microsoft
®
Windows or Terminal application is available as an addon to Atmel Studio) with these settings:
– 38400 bauds
– 8 bits of data
– No parity
– 1 stop bit
– No flow control
Start the application
The LED should start blinking on the board. In the terminal window, the following text should appear
(values depend on the board and chip used):
– \code
• Getting Started Example xxx -• xxxxxx-xx
• Compiled: xxx xx xxxx xx:xx:xx -– \endcode
•
Figure 4-4 SAML22 Getting Started – Terminal Output
•
Pressing and release button SW0 should make LED0 on and off blinking.
Atmel AT09886: SAM L22 Getting Started Guide [APPLICATION NOTE]
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5.
What’s Next?
•
•
•
•
•
•
•
Atmel Studio videos: www.atmel.com/atmelstudio
Atmel Studio help: Help -> View Help (Ctrl+F1)
ASF Getting Started: www.atmel.com/asf
ASF online documentation: http://asf.atmel.com/docs/latest/
ASF Reference manual: http://www.atmel.com/tools/AVRSOFTWAREFRAMEWORK.aspx?
tab=documents
Technical Documentation for various products: www.atmel.no/webdoc
Technical Support: http://www.atmel.com/design-support/
.
Atmel AT09886: SAM L22 Getting Started Guide [APPLICATION NOTE]
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6.
Revision History
Doc Rev.
Date
Comments
42494A
08/2015
Initial document release.
Atmel AT09886: SAM L22 Getting Started Guide [APPLICATION NOTE]
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2015 Atmel Corporation. / Rev.: Atmel-42494A-SAML22-Getting-Started-Guide_AT9886_Application Note-08/2015
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