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CC430 RF Examples

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ApplicationReportSLAA465–August2010

CC430RFExamplesMiguelMoralesandDungDangABSTRACTThisapplicationreportdescribesthelibrarycomponentsandimplementationoftheRFcodeexamplesfortheCC430F613x/F513xsub-1GHzsystem-on-chip(SoC)devices.Theexamplesincludesupportforpacket-handlingmodes,includingvariableandfixedlengthfiltering,aswellastheasynchronousandsynchronousmodesofcommunication.ThedocumentalsoexplainsthekeyRFconfigurationregistersettingstoenableeachmode.

ProjectcollateralandsourcecodediscussedinthisapplicationreportcanbedownloadedfromthefollowingURL:http://www-s.ti.com/sc/techlit/slaa465.zip.

Table1.AbbreviationsAcronymDefinitionCCRCaptureCompareRegisterCRCChecksumFIFOFirst-InFirst-OutLQILinkQualityIndexRSSIReceivedSignalStrengthIndicatorRXReceiveTXTransmit

Contents1CC430ModesofCommunication.........................................................................................22Packet-HandlingMode.....................................................................................................23(A)synchronousMode(s)...................................................................................................64CodeOrganization..........................................................................................................95References.................................................................................................................10

ListofFigures1TypicalPacketFormat......................................................................................................22ProgramFlowforRFTX/RXWithPacketLengthLessThanFIFO..................................................33StatusByteContents.......................................................................................................44ProgramFlowforRFTX/RXWithPacketLengthGreaterThanFIFO..............................................55AsynchronousModeTXWithTimerACCRxInternalConnections..................................................76AsynchronousModeRXWithTimerACCRxInternalConnections..................................................77SynchronousModeTXWithTimerACCRxConnections.............................................................88SynchronousModeRXWithTimerACCRxConnections.............................................................9

ListofTables1Abbreviations................................................................................................................12ReceivedPacketStatusByte1Descriptions............................................................................33ReceivedPacketStatusByte2(SecondByteAppendedAfterData)Descriptions...............................34PKTCTRL0–PacketAutomationControl...............................................................................45PKTCTRL0–PacketAutomationControl...............................................................................5

1SLAA465–August2010CC430RFExamples

Copyright©2010,TexasInstrumentsIncorporatedOptional Data WhiteningOptional CRC-16CalculationLegend:

InsertedAutomatically in TX,Processed and Removed in RX.

Optional User-Provided Fields Processedin TX, Processed but not Removed in RX.

Unprocessed User Data(Apart From Whitening)

Data FieldCRC

-

16

Address F

i

eld

Length Field

Sync Word

Preamble

Bits(1010...1010)

8 x nBits16/32Bits8Bits8Bits8 x nBits16Bits

CC430ModesofCommunicationwww.ti.com

6TA1SignalConnections...................................................................................................67PKTCTRL0–PacketAutomationControl...............................................................................88IOCFG0–GDOxSignalSelection(x=0,1,or2)......................................................................89PKTCTRL0–PacketAutomationControl...............................................................................910IOCFG0–GDOxSignalSelection(x=0,1,or2)......................................................................911IOCFG2–GDOxSignalSelection(x=0,1,or2)......................................................................9

1CC430ModesofCommunicationThereareessentiallytwodifferentmethodstotransmitandreceivepacketsontheCC430:packetized-andnon-packetizedmodes.Thedifferenceisbasicallywhetherthedataisreceivedortransmittedthroughanon-chip64-byteFIFOorprovideddirectlytotheradioineitherasynchronousoranasynchronousbit-stream.Thefollowingcodeexamplesaredescribedindetailinthisapplicationreport:

Packet-HandlingMode•Packetsize>FIFOsize(variableandfixed-lengthfiltering)•Packetsize

合集下载

RF Basics for Non-RF Engineers

RF Basics for Non-RF Engineers

• Unlicensed ISM/SRD bands:
• USA/Canada:
260 – 470 MHz 902 – 928 MHz 2400 – 2483.5 MHz (FCC Part 15.231; 15.205) (FCC Part 15.247; 15.249) (FCC Part 15.247; 15.249)
© 2006 Texas Instruments Inc, Slide 2
Definitions
• dBm – relative to 1 mW • dBc – relative to carrier • 10mW = 10dBm, 0dBm = 1mW • -110dBm = 1E-11mW = 0.00001nW • For a 50 ohm load : -110dBm is 0.7uV, i.e. not much!
TX TX RX
TX TRX
RX
TX TX
© 2006 Texas Instruments Inc, Slide 8
RF Communication Systems
• Half-duplex RF Systems
Operation mode of a radio communication system in which each end can transmit and receive, but not simultaneously. Note: The communication is bidirectional over the same frequency, but unidirectional for the duration of a message. The devices need to be transceivers. Applies to most TDD and TDMA systems. Examples: Walkie-talkie, wireless keyboard mouse
Instructions (6)

Instructions (6)

CCxxxxEMK INTERFACE WITH THE MSP430This document has the required information necessary to run an example code todemonstrate the RF capabilities of the experimenter’s board.Note: Read the Experimenter's User's Guide and the FET User's Guide documents for more information. RequirementsFigure 1 shows the board with the associated jumpers and their configuration for properfunctionality of the demonstration.Place to powerFG4618. Use alsoto measure current.Place to locally powerboard from 2xAAAbatteries. In this case,use also to measurethe total boardcurrent consumption.Lower 3 pins. Used for FG4618 / JTAG1.Upper 3 pins. Used for F2013 / JTAG2.Jumper to “LCL” to provide local VCC to FET interface.(shown).Jumper to “FET” to power board from the FET interface.(In this case, thejumper must not be set.)FET tool connector toprogram / debug theMSP430FG4618.Figure 1: Board settings to demonstrate RF capabilitiesAssociated code filesThe code files associated with this demonstration is• TI_CC_spi.h• TI_CC_msp430.h• TI_CC_hardware_board.h• TI_CC_CC1100-CC2500.h• include.h• hal_uart.h• CC1100-CC2500.h• TI_CC_spi.c• main.c• hal_uart.c• cc1100-CC2500.cSteps to run the demonstration codesThis demonstration requires two experimenter’s boards and two CCxxxxEMK boardswith antennas. The exact steps are to be followed on each experimenter’s board. It isassumed that the CCxxxxEMK boards have been placed as a daughter card on eachexperimenter’s board. For stand alone operation the board has to be battery powered and hence the BATT jumper must be on the board.1. On Board #1 connect JTAG header of USB FET to JTAG1 to debug the FG46182. Open IAR Embedded Workbench V3.42.3. Choose ProjectÆ Add Existing Project from the drop down menu.4. Select the project file the CCxxxxEMK_Interface.ewp.5. Confirm if the target is MSP430FG4618 and FET Debugger option is selected.6. Build and load the project on the device by selecting ProjectÆ Debug.7. Come out of Debug mode by selecting Debug ÆStop Debugging.8. Disconnect JTAG header of USB FET from JTAG1.9. Repeat steps 1 through 8 on Board #2.10. Cycle power on each board individually to see LED 1 and LED 2 blink a fewtimes. The boards are then ready for the demonstration.11. Switch S1 and S2 on Board #1 (#2) control LED 2 and LED 1 on Board #2 (#1)respectively.12. Switch operation toggles the state of the LED from ONÆOFF or OFFÆON.13. For proper functionality ensure the on-board batteries have the sufficient voltagerequired for the MSP430.Note: This example is not configured for LOW POWER, remove BATT jumper toconserve power when not in use.。

430学习笔记

430学习笔记

一，MSP430G2553单片机的各个功能模块（一），IO口模块，1，我们所用的MSP430G2553有两组IO口，P1和P2。

2，IO口的寄存器有：方向选择寄存器PxDIR，输出寄存器PxOUT，输入寄存器PxIN，IO口内部上拉或下拉电阻使能寄存器PxREN，IO口功能选择寄存器PxSEL和PxSEL2，IO口中断使能寄存器PxIE，中断沿选择寄存器PxIES，IO口中断标志寄存器PxIFG。

3，所有的IO都带有中断，其中所有的P1口公用一个中断向量，所有的P2口公用一个中断向量。

所以在使用中断时，当进入中断后，还要判断到底是哪一个IO口产生的中断，判断方法可以是判断各个IO口的电平。

4，中断标志PxIFG需要软件清除，也可以用软件置位，从而用软件触发一个中断。

注意：在设置PxIESx时根据PxINx有可能会引起相应的PxIFGx置位（具体的情况见用户指南），所以在初始化完IO口中断以后，正式使用IO中断前要先将对应的PxIFGx清零。

程序如下：void IO_interrupt_init() //IO中断初始化函数{P1REN |= BIT4+BIT5+BIT6+BIT7; // pullup 内部上拉电阻使能//使用中断时，使能内部的上拉电阻这样当该脚悬空是，电平不会跳变，防止悬空时电平跳变不停的触发中断P1OUT = BIT4+BIT5+BIT6+BIT7; // 当引脚上的上拉或下拉电阻使能时，PxOUT选择是上拉还是下来//0：下拉，1：上拉P1IE |= BIT4+BIT5+BIT6+BIT7; // interrupt enabled P13中断使能P1IES |= BIT4+BIT5+BIT6+BIT7; // Hi/lo edge 下降沿中断//P1IES &= ~BIT3; //上升沿触发中断P1IFG &= ~(BIT4+BIT5+BIT6+BIT7); //中断标志位清零}5，PxOUT：如果引脚选择了内部的上拉或下拉电阻使能，则PxOUT设定电阻是上拉还是下拉，0：下拉，1：上拉6，当IO口不用时，最好不要设为输入，且为浮动状态（这是IO口的默认状态），因为当输入为浮动时，输入电压有可能会在VIL和VIH之间，这样会产生击穿电流。

基于单片机的无线自组网技术研究

基于单片机的无线自组网技术研究

*********本科毕业设计（论文）学院电子信息学院专业*******************学生姓名********班级学号***********指导教师***二零一三年六月****大学本科毕业论文基于单片机的无线自组网技术研究Research of Wireless Ad hoc Network Technology Based on Microcontroller摘要随着Internet技术的飞速发展，网络技术日趋多样，Wired Network已不能满足人们对随时、随地、可靠、快速通信的需求，无线网络技术应运而生。

无线Ad Hoc网络就是新型无线网络之一。

不同于其他无线网络，Ad Hoc网络并不依赖固定基础设施，具有通信、自组织、自管理等特点。

随着我国电子技术的不断提高，以单片机为核心处理器，进行无线自组网的技术，无疑已成为通信技术的发展趋势之一。

本文采用CC430F5137作为微处理器，配合其内部集成的CC1101无线收发器以及一些基本接口电路构成节点硬件系统。

网络系统包括中心节点和终端节点，介绍了无线自组网的特点以及讨论了低功耗应用方法。

分别对SimpliciTI网络协议及其拓扑结构进行了分析，并在此基础上进行软件设计，最终实现了基于SimpliciTI网络协议的网络通信系统。

关键词：CC430 F5137；无线自组网；低功耗；AbstractWith the rapid development of Internet technology, network technology increasingly becomes diverse, and Wired Network has been unable to satisfy people‟s needs who want to have reliable and fast communication in anytime or anywhere. As a result ,wireless network technology came into being. Wireless Ad Hoc network is one of the new wireless networks. Unlike other wireless networks, Ad Hoc network has many features including communication, self-organization, self-management, which does not rely on fixed infrastructure.With the continuous development of China's electronic technology ,the communication technology of wireless ad hoc network based on the microcontroller which works as the core processor , has undoubtedly become one of the trends of Communication .In this paper，CC430F5137 is adopted as the microprocessor，coordinating with its embedded CC1101 wireless transceiver and some of the basic interfacing circuits；the node hardware system is composed．The network system includes centrer node and terminal node,The characteristics of wireless Ad Hoc networks and the application method for the low-power is discussed. SimpliciTI network protocol and its topological structure are analyzed，and the software is designed based on the analysis．Thus，the network communication system based on SimpliciTI network protocol is implemented．Keywords:CC430 F5137; Wireless ad hoc network; low-power;目录第一章绪论................................................. 错误！未定义书签。