Atmel STK511 User manual

®
STK511
AVR®-Based Uni-Directional
Radio Starter Kit

18-Mrz-05 2
®
STK511
Outline
yIntroduction
yKit Contents
yReceiver Application Board
yReceiver Interface Board
¾Stand-alone Operation
¾Operation with STK500
yTransmitter Application Board
ySystem Setup
¾General Setup
¾Demo Setup – Hardware
¾Demo Setup – Software
¾Demo Receiver Configuration
¾Demo Transmitter Configuration
yRunning the Demo
yConclusion

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®
STK511
Introduction
yUHF radio covers 315, 434, 868 and 915 MHz
ySupports “intelligent” receiver ICs
yAtmel reference design receiver uses AVR
®
in STK500
yAtmel reference design transmitter uses ATtiny13
¾Supports 8-pin TSSOP PLL transmitters ICs
¾ASK or FSK transmission is pushbutton selectable
yReceiver Interface Board
¾Supports stand-alone receiver operation
¾Quickly programs configuration registers
OPMODE
LIMIT
¾Doubles as an expansion card for STK500
Enables quick prototype development
Sample software for STK500 included

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®
STK511
Kit Contents
ySTK511 Receiver Interface Board (IFB)
yRF Receiver Application Board (RAB) – one of the following:
¾T5743 (315/433.92 MHz)
¾T5760 (868 MHz)
¾T5761 (915 MHz)
yRF Transmitter Application Board (TAB) – one of the following:
¾Tiny13 + T5750 (868/915MHz)
¾Tiny13 + T5753 (315MHz)
¾Tiny13 + T5754 (433.92MHz)
yCD containing sample software and related documents
yAntenna
¾Transmitter uses integrated PCB trace
¾Receiver uses external monopole whip

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®
STK511
Receiver Application Board
yRegisters part of Atmel receivers (T5743/60/61)
¾OPMODE & LIMIT set performance of receiver
¾Must be reprogrammed upon power-up
¾Programmed using one-wire protocol over DATA line
yLED to indicate IC activity
yTest points for viewing signal activity
yMatching network for receive antenna

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®
STK511
Receiver Interface Board

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®
STK511
Stand-alone Operation
yChange receiver’s settings without writing software
¾DIP switches set configuration register values
¾Embedded firmware (ATmega8515) programs registers
yExample: Change modulation to ASK
¾Set DATA selector switch on IFB to STK511
¾Set OPMODE register DIP switch # 5 to “ON” position
¾Verify “Mod” LED is illuminated (indicating ASK)
¾Press “CONFIGURE” button to program registers

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®
STK511
Operation with STK500
ySTK511 Interface Board is an STK500 expansion card
¾Still permits DIP switch programming of configuration registers
¾Connects receiver signals to STK500
ySTK500 Capabilities
¾Allows user to select any AVR
®for system development
¾Creates environment for easy prototyping
¾Speeds up concept verification
¾Enables functional demos using integral LEDs and switches

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®
STK511
Transmitter
yAtmel ATtiny13 AVR
®
controls T575x transmitter
yCalibrated internal RC oscillator minimizes external parts
yProgrammable using exposed 6-pin ISP header
yMulti function I/O (5 places)
¾Button input
¾LED driver
¾A/D converter
¾RF transmission control
yASK or FSK RF modulation
yFSK modulation by “pulling” crystal load
¾Through I/O port
¾Through external FET

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®
STK511
General Setup
yStand-alone Operation (RAB to IFB Assembly)
¾Align signal pins of RAB near DIP switches on IFB
¾Align “+” and “GND” test points of RAB near DATA
switch on IFB
¾Insert RAB into 12-pin header connectors on IFB
¾Apply +5V supply to “+” and “GND” test points of RAB
yOperation with STK500 (RAB/IFB Assembly to STK500)
¾Align EXPAND0 and EXPAND1 pin headers of IFB & STK500
¾Insert IFB into STK500 (don’t pinch ribbon cables!)
¾Use VTARGET of STK500 sourced through EXPAND0/1

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®
STK511
Demo Setup - Hardware
yVerify AT90S8515 AVR
®
in 40-pin SCKT3000D3
(red silkscreen)
yShort VTARGET jumper setting on STK500
yVerify cable connections
¾DB9: From RS232 CTRL and host PC serial port
¾6-wire ribbon: Between SPROG3 and ISP6PIN headers
¾10-wire ribbon: From LEDS header to PORTC header
yConnect RAB/IFB Assembly to STK500
yApply +12V with supplied connector

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®
STK511
Demo Setup - Software
yOpen AVR Studio and select
Tools
⇒
STK500/AVRISP/JTAG ICE
yOn Board tab, verify
VTARGET voltage set to 5V
yOn Program tab
¾In Device, select AT90S8515
from pull-down menu
¾In Flash, browse Input Hex
File field to STK511 Decode
Software v2.0.hex located
on CD
¾Click Program button to
complete programming

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®
STK511
Demo Receiver Configuration
ySet DATA selector switch on IFB to STK511
ySet DIP switches as follows (SW#1 …SW#12):
¾OPMODE register: 000100011001
¾LIMIT register: 010101101001
¾Default values printed on board silkscreen below DIP switch
yPress “CONFIGURE” button to write values into registers
ySet DATA selector switch on IFB to STK500

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STK511
yShipped in low current “sleep” mode
yPeriodic RF transmission starts upon button release
¾LED(s) blinks on RF activity
¾RF contains ambient light level data
yToggle ASK/FSK by pressing buttons simultaneously
¾FSK selected if both LEDs blink
¾ASK selected if only one LED blinks
yReverts to “sleep” mode after 30 seconds
yToggle between fast/slow update rate
¾Press right button for ¼-second update interval
¾Press left button for 8-second update interval
yDemo program highlights ATtiny13 A/D converter
Demo Transmitter Configuration

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STK511
Running the Demo
yLight intensity shown as LED bar graph on STK500
yVarying ambient light level changes LED bar graph
¾As light gets brighter, more LEDs turn on
¾Darkness corresponds to all LEDs off
y¼-second RF transmit interval yields real-time updates
y“DATA” test point on RAB (also PB4 on STK500)
¾View demodulated RF data under normal operation
¾View programming data when configuring the receiver
registers

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®
STK511
Conclusion
ySTK511 is a …
¾Flexible development system compatible with the STK500
¾Quality support tool that supports many Atmel devices
ySTK511 enables …
¾Easy chipset evaluation of Atmel's uni-directional RF radios
¾Fast design and verification of AVR
®-based RF radios
ySTK511 kits are available today
¾Get yours now!
yOrder numbers
¾ATAKSTK511- 3 Operates at 315 MHz
¾ATAKSTK511- 4 Operates at 434 MHz
¾ATAKSTK511- 8 Operates at 868 MHz
¾ATAKSTK511- 9 Operates at 915 MHz