ATRS485 Xplained Pro User Guide

ATRS485 Xplained Pro User Guide
USER GUIDE
ATRS485 Xplained Pro
Preface
®
Atmel ATRS485 Xplained Pro is an extension board to the Atmel Xplained
Pro evaluation platform. ATRS485 Xplained Pro is designed to connect with
RS485/422 supporting devices.
42488A-MCU-07/2015
Table of Contents
Preface .......................................................................................... 1
1. Introduction .............................................................................. 3
1.1.
1.2.
Features .............................................................................. 3
Kit Overview ......................................................................... 3
2. Getting Started ........................................................................ 4
2.1.
2.2.
2.3.
Three Steps to Start Exploring the Atmel Xplained Pro Platform ...... 4
Connecting ATRS485 Xplained Pro to the Xplained Pro MCU
Board .................................................................................. 4
Design Documentation and Related Links .................................. 4
3. Xplained Pro ............................................................................ 5
3.1.
3.2.
Hardware Identification System ................................................ 5
Standard Headers and Connectors ........................................... 5
3.2.1.
Xplained Pro Standard Extension Header ...................... 5
4. Hardware User Guide ............................................................. 7
4.1.
Headers and Connectors ........................................................ 7
4.1.1.
ATRS485 Xplained Pro Extension Header ...................... 7
5. Hardware Revision History and Known Issues ...................... 8
5.1.
5.2.
Identifying Product ID and Revision .......................................... 8
Revision 6 ........................................................................... 8
6. Document Revision History ..................................................... 9
7. Evaluation Board/Kit Important Notice .................................. 10
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1.
Introduction
1.1
Features
●
●
1.2
RS485/422 transceiver
●
Full duplex and half duplex operation
●
ESD protection and fail safe mode available
●
5V and 3.3V operation
●
Supports profibus mode
Xplained Pro hardware identification system
Kit Overview
Atmel ATRS485 Xplained Pro is a RS485/422 board for the Xplained Pro platform. It connects to any Xplained
Pro standard extension header on any RS485 supporting Xplained Pro MCU board.
Figure 1-1. ATRS485 Xplained Pro Extension Board
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2.
Getting Started
2.1
Three Steps to Start Exploring the Atmel Xplained Pro Platform
2.2
1.
Download and install Atmel Studio.
2.
Launch Atmel Studio.
3.
Connect ATRS485 Xplained Pro to the Xplained Pro MCU board and connect a USB cable to the DEBUG
USB port on the Xplained Pro MCU board.
Connecting ATRS485 Xplained Pro to the Xplained Pro MCU Board
ATRS485 Xplained Pro is designed to be connected to the Xplained Pro header marked EXT1. It is compatible
with all Xplained Pro EXT headers. Refer to the pin-out of your Xplained Pro evaluation kit to find out which
Xplained Pro EXT headers that can be used.
Once the Xplained Pro MCU board is powered, the green power LED will be lit and Atmel Studio will auto
detect which Xplained Pro MCU and extension board(s) connected. Atmel Studio will present relevant
information like datasheets and kit documentation. The kit landing page in Atmel Studio also have the option
to launch Atmel Software Framework (ASF) example applications for the kit. The target device is programmed
and debugged by the on-board Embedded Debugger. No external programmer or debugger tool is needed.
2.3
Design Documentation and Related Links
The following list contains links to the most relevant documents and software for ATRS485 Xplained Pro
1.
1
Xplained Pro products - Atmel Xplained Pro is a series of small-sized and easy-to-use evaluation kits
®
for Atmel AVR 8- and 32-bit microcontrollers and SoC RF modules. It consists of a series of low cost
MCU and wireless boards for evaluation and demonstration of features and capabilities of different MCU
and / wireless families.
2
2.
ATRS485 Xplained Pro User Guide - PDF version of this User Guide.
3.
ATRS485 Xplained Pro Design Documentation - Package containing schematics, BOM, assembly
drawings, 3D plots, layer plots etc.
4.
Atmel Studio - Free Atmel IDE for development of C/C++ and assembler code for Atmel
microcontrollers.
5.
ATRS485-Xpro - Product page with information and documentation.
3
4
5
1
http://www.atmel.com/XplainedPro
http://www.atmel.com/tools/atrs485-xpro.aspx?tab=documents
3
http://www.atmel.com/tools/atrs485-xpro.aspx?tab=documents
4
http://www.atmel.com/atmelstudio
5
http://www.atmel.com/devices/atrs485.aspx
2
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3.
Xplained Pro
Xplained Pro is an evaluation platform that provides the complete Atmel microcontroller and / SoC RF
experience. The platform consists of
●
Microcontroller (MCU) and RF evaluation kits
●
Support a wide range of extension boards
●
Atmel Software Framework (ASF) drivers and demo code integrated with Atmel Studio
●
User guides, application notes, datasheets, and example code through Atmel Studio
1
Xplained Pro MCU and extension boards can be purchased in the Atmel Web Store .
3.1
Hardware Identification System
All Xplained Pro compatible extension boards have an Atmel ATSHA204A CryptoAuthentication™ chip
mounted. This chip contains information that identifies the extension with its name and some extra data. When
an Xplained Pro extension board is connected to an Xplained Pro board the information is read and sent
to Atmel Studio. The Atmel Kits extension, installed with Atmel Studio, will give relevant information, code
examples, and links to relevant documents. Table 3-1, “Xplained Pro ID Chip Content” on page 5 shows
the data fields stored in the ID chip with example content.
Table 3-1. Xplained Pro ID Chip Content
Data Field
Data Type
Example Content
Manufacturer
ASCII string
Atmel’\0’
Product Name
ASCII string
Segment LCD1 Xplained Pro’\0’
Product Revision
ASCII string
02’\0’
Product Serial Number
ASCII string
1774020200000010’\0’
Minimum Voltage [mV]
uint16_t
3000
Maximum Voltage [mV]
uint16_t
3600
Maximum Current [mA]
uint16_t
30
3.2
Standard Headers and Connectors
3.2.1
Xplained Pro Standard Extension Header
All Xplained Pro evaluation kits have one or more dual row, 20-pin, 100mil extension headers. Xplained Pro
boards have male headers while Xplained Pro extension boards have their female counterparts. Note that
all pins are not always connected. However, all the connected pins follow the defined pin-out described in
Table 3-2, “Xplained Pro Extension Header” on page 5. The extension headers can be used to connect a
wide variety of Xplained Pro extensions to Xplained Pro boards and to access the pins of the target MCU on
Xplained Pro board directly.
Table 3-2. Xplained Pro Extension Header
1
Pin Number
Name
Description
1
ID
Communication line to the ID chip on extension board.
2
GND
Ground.
3
ADC(+)
Analog to digital converter, alternatively positive part of
differential ADC.
4
ADC(-)
Analog to digital converter, alternatively negative part of
differential ADC.
5
GPIO1
General purpose I/O.
6
GPIO2
General purpose I/O.
http://www.atmel.com/buy/inventory/default.aspx?parts=ATRS485-XPRO
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Pin Number
Name
Description
7
PWM(+)
Pulse width modulation, alternatively positive part of
differential PWM.
8
PWM(-)
Pulse width modulation, alternatively negative part of
differential PWM.
9
IRQ/GPIO
Interrupt request line and/or general purpose I/O.
10
SPI_SS_B/GPIO
Slave select for SPI and/or general purpose I/O.
11
TWI_SDA
Data line for two-wire interface. Always implemented, bus
type.
12
TWI_SCL
Clock line for two-wire interface. Always implemented, bus
type.
13
USART_RX
Receiver line of Universal Synchronous and Asynchronous
serial Receiver and Transmitter.
14
USART_TX
Transmitter line of Universal Synchronous and
Asynchronous serial Receiver and Transmitter.
15
SPI_SS_A
Slave select for SPI. Should be unique if possible.
16
SPI_MOSI
Master out slave in line of Serial peripheral interface. Always
implemented, bus type.
17
SPI_MISO
Master in slave out line of Serial peripheral interface. Always
implemented, bus type.
18
SPI_SCK
Clock for Serial peripheral interface. Always implemented,
bus type.
19
GND
Ground.
20
VCC
Power for extension board.
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4.
Hardware User Guide
4.1
Headers and Connectors
4.1.1
ATRS485 Xplained Pro Extension Header
ATRS485 Xplained Pro implements one Xplained Pro Standard Extension Header on page 5 marked with
EXT in silkscreen. This header makes it possible to connect the board to any RS485 supporting Xplained Pro
MCU board. The pin-out definition for the extension header can be seen in Table 4-1, “ATRS485 Xplained Pro
Extension Header” on page 7.
Table 4-1. ATRS485 Xplained Pro Extension Header
Pin
on
EXT
Function
Description
1
ID_DATA
Communication line to ID chip
2
GND
Ground
3
NC
4
NC
5
GPIO1_RTS
Driver Enable to RS485 Transceiver
6
GPIO2_CTS
Receiver Enable to RS485 Transceiver
7
NC
8
NC
9
NC
10
NC
11
NC
12
NC
13
UART_RX
Receive pin of target MCU RS485 interface
14
UART_TX
Transmit pin of target MCU RS485 interface
15
NC
16
NC
17
NC
18
NC
19
GND
Ground.
20
VCC_3V3_5V0
Target supply voltage
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5.
Hardware Revision History and Known Issues
5.1
Identifying Product ID and Revision
The revision and product identifier of Xplained Pro boards can be found in two ways; through Atmel Studio or
by looking at the sticker on the bottom side of the PCB.
By connecting an Xplained Pro board to a computer with Atmel Studio running, an information window will pop
up. The first six digits of the serial number, which is listed under kit details, contain the product identifier and
revision. Information about connected Xplained Pro extension boards will also appear in the Atmel Kits window.
The same information can be found on the sticker on the bottom side of the PCB. Most kits will print the
identifier and revision in plain text as A09-nnnn\rr where nnnn is the identifier and rr is the revision. Boards with
limited space have a sticker with only a QR-code which contains a serial number string.
The serial number string has the following format:
"nnnnrrssssssssss"
n = product identifier
r = revision
s = serial number
The kit identifier for ATRS485 Xplained Pro is 2518.
5.2
Revision 6
Revision 6 of ATRS485 Xplained Pro is the initial released version, there are no known issues.
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6.
Document Revision History
Document
revision
Date
Comment
42488A
07/2015
Initial document release
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7.
Evaluation Board/Kit Important Notice
This evaluation board/kit is intended for use for FURTHER ENGINEERING, DEVELOPMENT,
DEMONSTRATION, OR EVALUATION PURPOSES ONLY. It is not a finished product and may not (yet)
comply with some or any technical or legal requirements that are applicable to finished products, including,
without limitation, directives regarding electromagnetic compatibility, recycling (WEEE), FCC, CE or UL
(except as may be otherwise noted on the board/kit). Atmel supplied this board/kit "AS IS," without any
warranties, with all faults, at the buyer's and further users' sole risk. The user assumes all responsibility
and liability for proper and safe handling of the goods. Further, the user indemnifies Atmel from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user's
responsibility to take any and all appropriate precautions with regard to electrostatic discharge and any other
technical or legal concerns.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER USER NOR
ATMEL SHALL BE LIABLE TO EACH OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES.
No license is granted under any patent right or other intellectual property right of Atmel covering or relating
to any machine, process, or combination in which such Atmel products or services might be or are used.
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Atmel Corporation
T: (+1)(408) 441.0311
1600 Technology Drive, San Jose, CA 95110 USA
F: (+1)(408) 436.4200
|
www.atmel.com
© 2015 Atmel Corporation. / Rev.: 42488A-MCU-07/2015
®
®
®
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