Microchip Technology SAM R30 Xplained Pro Manuel utilisateur

ATSAMR30-XPRO

SAM R30 Xplained Pro

Description

The SAM R30 Xplained Pro is a hardware platform designed to evaluate the ATSAMR30G18A SoC. This

kit is supported by Atmel Studio, an integrated development platform, which provides predefined

application examples.This kit provides easy access to various features of the ATSAMR30G18A SoC, and

offers additional peripherals to extend the features of the board and ease the development of custom

designs.

Figure 1. SAM R30 Xplained Pro Evaluation Kit

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Table of Contents

Description.......................................................................................................................1

1. Introduction................................................................................................................4

1.1. Features....................................................................................................................................... 4

1.2. Kit Overview................................................................................................................................. 4

2. Getting Started.......................................................................................................... 6

2.1. Xplained Pro Quick Start.............................................................................................................. 6

3. Xplained Pro.............................................................................................................. 8

3.1. Embedded Debugger................................................................................................................... 8

3.2. Xplained Pro Analog Module (XAM).............................................................................................9

3.3. Hardware Identification System..................................................................................................11

3.4. Power Sources........................................................................................................................... 11

3.5. Xplained Pro Headers and Connectors......................................................................................12

4. Hardware User Guide..............................................................................................14

4.1. Power Distribution...................................................................................................................... 14

4.2. Connectors.................................................................................................................................14

4.3. Peripherals................................................................................................................................. 18

4.4. Embedded Debugger Implementation........................................................................................19

4.5. Kit Modifications......................................................................................................................... 22

5. Agency Certification.................................................................................................26

5.1. United States (FCC)................................................................................................................... 26

5.2. European Union (RED [Radio Equipment Directive]).................................................................26

5.3. List of Antennas Tested With This Product.................................................................................27

6. Appendix..................................................................................................................28

6.1. Getting Started with IAR.............................................................................................................28

6.2. Connecting External Debuggers to an Xplained Pro Board....................................................... 31

7. Hardware Revision History and Known Issues........................................................33

7.1. Identifying Product ID and Revision........................................................................................... 33

7.2. Hardware Revision..................................................................................................................... 33

7.3. Known Issues............................................................................................................................. 33

8. Document Revision History..................................................................................... 34

The Microchip Web Site................................................................................................ 35

Customer Change Notification Service..........................................................................35

Customer Support......................................................................................................... 35

Microchip Devices Code Protection Feature................................................................. 35

ATSAMR30-XPRO

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Legal Notice...................................................................................................................36

Trademarks................................................................................................................... 36

Quality Management System Certified by DNV.............................................................37

Worldwide Sales and Service........................................................................................38

ATSAMR30-XPRO

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1. Introduction

1.1 Features

• Kit Supports 868MHz and 915MHz Dual (Wideband) ISM Band

• On-Board Embedded Debugger (EDBG):

– Auto-ID for board identification in Studio

– One status LED (yellow)

– One power supply LED (green)

– Symbolic debug of complex data types including scope information

– Programming and debugging including power measurements

– Data Gateway Interface: Serial Peripheral Interface (SPI) bus, Inter-Integrated Circuit (I2C)

and four General Purpose Input/Outputs (GPIOs)

– Virtual COM Port (CDC)

• Embedded Current Measurement Circuitry with Data Visualizer Support for Data Visualization

• Two Mechanical Buttons (User-Configurable Button and RESET Button)

• Two User LEDs (Soft Orange and Green)

• One QTouch® Button

• USB Interface, Device and Reduced Host Mode

• Two Xplained Pro Extension Headers

• Antenna:

– One ceramic chip antenna (Johanson Technology – 0900AT43A0070)

– One SMA connector for external antenna

• Three Possible Power Sources:

– External power

– Embedded Debugger (EDBG) USB

– TARGET USB

• Clock Source:

– 32.768 kHz crystal, a clock source for the controller in the SAM R30 device

– 16 MHz crystal for the RF die in the SAM R30 device

• Supported with application examples in the Atmel Software Framework

1.2 Kit Overview

The SAM R30 device is an ARM-based, ultra low-power microcontroller (MCU) equipped with an IEEE®

802.15.4-2003/2006/2011 standard that is compliant with RF interfaces for the sub-1GHz frequency

bands, such as 780 MHz (China), 868 MHz (Europe), and 915 MHz (North America). It uses the 32-bit

ARM® Cortex®- M0+ processor, which operates at a maximum of 48 MHz (2.46 CoreMark®/MHz) and

offers 256KB of Flash and 40KB of SRAM in both 32-pin and 48-pin packages.

The SAM R30 device supports the following power managaement techniques to reduce current

consumption:

• Power Gating

• SleepWalking

ATSAMR30-XPRO

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• Ultra low-power peripherals, etc.

The kit is designed to work with the ATSAMR30G18A SoC that supports dual ISM band 868 MHz

(Europe) and 915 MHz (North America).

Figure 1-1. SAM R30 Xplained Pro Evaluation Kit

ATSAMR30-XPRO

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2. Getting Started

This chapter describes how to get started with the Xplained Pro evaluation platform and how to find

design documentation and other relevant links.

2.1 Xplained Pro Quick Start

Steps to start exploring the Xplained Pro platform:

1. Download and install Atmel Studio.

2. Launch Atmel Studio.

3. Connect the DEBUG USB port on the evaluation kit to the computer using a USB cable (Standard-

A to Micro-B or Micro-AB).

The operating system installs the driver software automatically the first time the Xplained Pro evaluation

kit is connected to a PC. This driver supports 32-bit and 64-bit versions of Microsoft® Windows® XP,

Windows Vista®, Windows 7, Windows 8, Windows 10, and Windows Server 2012.

When the Xplained Pro MCU board is powered, the power LED (green) glows and Atmel Studio

automatically detects the specific Xplained Pro MCU and extension board(s) that are connected. The kit

landing page in Atmel Studio comes with an option to launch Atmel Software Framework (ASF) and

Atmel START example application codes for the kit. The SAM R30 device is programmed and debugged

by the on-board Embedded Debugger and therefore no external programmer or debugger tool is

required.

2.1.1 Design Documentation and Relevant Links

The following list contains links to the most relevant documents and software for the SAM R30 Xplained

Pro.

•Xplained products - Xplained evaluation kits are a series of easy-to-use evaluation kits for

Microchip microcontrollers and other Microchip products.

– Xplained Nano: used for low pin-count devices and provides a minimalistic solution with

access to all I/O pins of the target microcontroller.

– Xplained Mini: used for medium pin-count devices and adds Arduino Uno compatible header

footprint and a prototyping area.

– Xplained Pro: used for medium to high pin-count devices that features advanced debugging

and standardized extensions for peripheral functions.

Note: All the above kits have on-board programmers/debuggers, which creates a set of low-cost

boards for evaluation and demonstration of features and capabilities of different Microchip products.

•Atmel Studio - Free IDE for development of C/C++ and assembler code for microcontrollers.

•Microchip sample store - Microchip sample store where you can order samples of devices.

•EDBG User Guide - User guide containing more information about the on-board Embedded

Debugger.

•IAR Embedded Workbench® for ARM® - This is a commercial C/C++ compiler that is available for

ARM®. There is a 30 day evaluation version as well as a code size limited kick-start version

available from their website. The code size limit is 16KB for devices with M0, M0+, and M1 cores

and 32KB for devices with other cores.

•QTouch® tools - A collection of tools to design capacitive touch applications.

ATSAMR30-XPRO

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•Data Visualizer - Data Visualizer is a program used for processing and visualizing data. The Data

Visualizer can receive data from various sources such as the Embedded Debugger Data Gateway

Interface found on Xplained Pro boards and COM Ports.

•Design Documentation - Package containing CAD source, schematics, BOM, assembly drawings,

3D plots, layer plots etc.

ATSAMR30-XPRO

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3. Xplained Pro

Xplained Pro is an evaluation platform which contains a series of microcontroller boards (evaluation kits)

and extension boards. Atmel Studio is used to program and debug the microcontrollers on these boards.

Atmel Studio includes ASF and Atmel START, which has drivers and demo code, and Data Visualizer,

which supports data streaming and advanced debugging. Xplained Pro evaluation kits can be connected

to a wide range of Xplained Pro extension boards through standardized headers and connectors.

Xplained Pro extension boards have identification (ID) chips to uniquely identify which boards are

connected to the Xplained Pro evaluation kits.

3.1 Embedded Debugger

The SAM R30 Xplained Pro contains an Embedded Debugger (EDBG) for on-board debugging. The

EDBG is a USB composite device with the following interfaces:

• Debugger

• Virtual COM Port

• Data Gateway Interface (DGI)

The EDBG can program and debug the ATSAMR30G18A with the help of Atmel Studio. The SWD

interface is connected between the EDBG and the ATSAMR30G18A on the SAM R30 Xplained Pro.

The Virtual COM Port is connected to a UART on the ATSAMR30G18A and provides an easy way to

communicate with the target application through terminal software. It offers variable baud rate, parity, and

stop bit settings. Note that the settings on the ATSAMR30G18A must match the settings given in the

terminal software.

Info: The Virtual COM Port in the EDBG requires the terminal software to set the Data

Terminal Ready (DTR) signal to enable the UART pins connected to the ATSAMR30G18A. If the

DTR signal is not enabled, the UART pins on the EDBG are kept in tri-state (high-z) to render

the COM Port not usable. The DTR signal is automatically set by some terminal software, but it

may have to be manually enabled in your terminal.

The DGI consists of several physical interfaces for bidirectional communication with the host computer.

Communication over the interfaces is bidirectional. It can be used to send event values, and data from

the ATSAMR30G18A. Traffic over the interfaces can be timestamped by the EDBG for more accurate

tracing of events, but timestamping reduces the maximal data throughput. The Data Visualizer is used to

send and receive data through DGI.

The EDBG controls two LEDs on the SAM R30 Xplained Pro: a power LED and a status LED. The table

below shows how the LEDs are controlled in different operation modes.

ATSAMR30-XPRO

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Table 3-1. EDBG LED Control

Mode Power LED Status LED

Normal mode The power LED is on when

power is applied to the board.

Activity indicator, the LED flashes

when any communication

happens to the EDBG.

Bootloader mode (idle) The power LED and the status LED blink simultaneously.

Bootloader mode (firmware

upgrade)

The power LED and the status LED blink in an alternating pattern.

For more details on the EDBG, see the EDBG User Guide.

3.2 Xplained Pro Analog Module (XAM)

3.2.1 Overview

The Xplained Pro Analog Module (XAM) extends the embedded debugger with high dynamic range

current measurement. This enables power profiling of the target system.

Figure 3-1. XAM Block Diagram

ADC0

ADC1

20x

voltage

reference

2.7V

Control MCU

GND

S&H

ADC

Calibration

circuitry

Calibration ON/OFF

AREF

GPIO

GPIO(s)

GPIO

100 mOhm

100 Ohm

EDBG

SPI

Clock sync

SWD

Sync GPIO

I2C

16x

Current input

Current output

Range selection

Pre-amplifier

Active filter with

gain

Xplained Pro Analog Module (XAM)

20x

The XAM consists of:

• Calibration circuitry

• Voltage reference circuitry

• Analog front-end:

– Shunt resistors with a range selection switch

– Pre-amplifier

– Two active filters with gain

• Control MCU

ATSAMR30-XPRO

– Analog-to-Digital Converter

– Signal processing

– Control/communication interface to the EDBG

The current measurement front-end is a high side shunt measurement with a pre-amplifier and a second

active filter stage with gain as shown in Figure 3-1. The wide dynamic range is achieved by four

measurement ranges, which are defined by two shunt resistors and the two parallel second stage active

filters with gain.

3.2.2 EDBG Interface

The XAM is connected to the EDBG with the following interfaces:

•I2C: This is used to control and configure the XAM.

•SPI: Current measurement data is streamed to the EDBG via this interface. This is a unidirectional

channel from the XAM to the EDBG.

•SWD: The MCU in the XAM is programmed via SWD from the EDBG.

•Clock sync: Signal used to synchronize ADC measurements with the EDBG.

•Reference clock: Reference clock for the XAM.

3.2.3 Sample Rate

The raw sampling rate of the XAM is up to 250 kHz and with the default averaging configuration (average

of 16 samples), the actual output of the XAM is 16.67 ksps.

Info: The XAM output sample rate is not an integer fraction of the raw sampling.

3.2.4 Measurement Ranges and Accuracy

The XAM has four measurement ranges. These are defined by two shunt resistors and two gain stages.

Table 3-2. XAM Measurement Ranges and Accuracy

Measurement

Range

Hardware Resolution Accuracy Comments

Range 1 Low current shunt and

high gain stage

20 nA 1 LSB ±1% Accuracy will decrease below

1μA. Typical accuracy for

300nA is 1 LSB ± 10%.

Range 2 Low current shunt and

low gain stage

150 nA 1 LSB ±1%

Range 3 High current shunt and

high gain stage

10 μA 1 LSB ±1%

Range 4 High current shunt and

low gain stage

100 μA 1 LSB ±1% Accuracy will decrease

above 100 mA. Typical

accuracy is 1 LSB ±5% at

400 mA. Maximum current is

400 mA.

ATSAMR30-XPRO

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