mote-mote radio communication - tinyos documentation wiki.htm

从官方网站上下载tinyos2.0的学习指南

  rather than interrupt context (events that have the <CODE>async</CODE> keyword 
  can execute in interrupt context). Since the TinyOS execution model allows 
  only one task to execute at a time, if all accesses to a variable occur in 
  task context, then no race conditions will occur for that variable. Since all 
  accesses to <CODE>counter</CODE> occur in task context, no critical sections 
  are needed when accessing it. </P>
  <LI><B>Update the implementation block of the application configuration file 
  by adding a components statement for each component used that provides one of 
  the interfaces chosen earlier.</B> <BR>The following lines can be added just 
  below the existing <CODE>components</CODE> declarations in the implementation 
  block of <CODE>BlinkToRadioAppsC.nc</CODE>: <PRE>implementation {
  ...
  components new AMReceiverC(AM_BLINKTORADIO);
  ...
}
</PRE>
  <P>This statement means that a new instance of <CODE>AMReceiverC</CODE> will 
  be created. <CODE>AMReceiver</CODE> is a generic, parameterized component. The 
  <CODE>new</CODE> keyword indicates that a new instance of 
  <CODE>AMReceiverC</CODE> will be created. The <CODE>AM_BLINKTORADIO</CODE> 
  parameter indicates the AM type of the <CODE>AMReceiverC</CODE> and is chosen 
  to be the same as that used for the <CODE>AMSenderC</CODE> used earlier, which 
  ensures that the same AM type is being used for both transmissions and 
  receptions. <CODE>AM_BLINKTORADIO</CODE> is defined in the 
  <CODE>BlinkToRadio.h</CODE> header file. </P>
  <LI><B>Wire the the interfaces used by the application to the components which 
  provide those interfaces.</B> <BR>Update the wiring by insert the following 
  line just before the closing brace of the <CODE>implementation</CODE> block in 
  BlinkToRadioAppC: <PRE>implementation {
  ...
  App.Receive -&gt; AMReceiverC;
}
</PRE>
  <LI><B>Test your application!</B> <BR>Testing your application is easy. Get 
  two motes. They can be mica2, micaz, telosa, telosb, or tmote. For this 
  exercise, let's assume that the motes are telosb (if not, skip past the 
  motelist part and program the mote using whatever the appropriate programmer 
  parameters are for your hardware). Assuming you are using a telosb, first open 
  a Cygwin or Linux shell and cd to the <CODE>apps/tutorials/BlinkToRadio</CODE> 
  directory. Then, insert the first telosb mote into an available USB port on 
  the PC and type <CODE>motelist</CODE> the at the Cygwin or Linux prompt ($). 
  You should see exactly one mote listed. For example: <PRE>$ motelist
Reference  CommPort   Description
---------- ---------- ----------------------------------------
UCC89MXV   COM17      Telos (Rev B 2004-09-27)
</PRE>
  <P>Now, assuming you are in the <CODE>apps/tutorials/BlinkToRadio</CODE> 
  directory, type <CODE>make telosb install,1</CODE>. You should see a lot text 
  scroll by that looks something like: </P><PRE>$ make telosb install,1
mkdir -p build/telosb
    compiling BlinkToRadioAppC to a telosb binary
ncc -o build/telosb/main.exe -Os -O -mdisable-hwmul -Wall -Wshadow -DDEF_TOS_AM_GROUP=0x7d 
-Wnesc-all -target=telosb -fnesc-cfile=build/telosb/app.c -board=   BlinkToRadioAppC.nc -lm
    compiled BlinkToRadioAppC to build/telosb/main.exe
            9040 bytes in ROM
             246 bytes in RAM
msp430-objcopy --output-target=ihex build/telosb/main.exe build/telosb/main.ihex
    writing TOS image
tos-set-symbols --objcopy msp430-objcopy --objdump msp430-objdump --target ihex build/telosb/main.ihex 
build/telosb/main.ihex.out-1 TOS_NODE_ID=1 ActiveMessageAddressC$addr=1
    found mote on COM17 (using bsl,auto)
    installing telosb binary using bsl
tos-bsl --telosb -c 16 -r -e -I -p build/telosb/main.ihex.out-1
MSP430 Bootstrap Loader Version: 1.39-telos-8
Mass Erase...
Transmit default password ...
Invoking BSL...
Transmit default password ...
Current bootstrap loader version: 1.61 (Device ID: f16c)
Changing baudrate to 38400 ...
Program ...
9072 bytes programmed.
Reset device ...
rm -f build/telosb/main.exe.out-1 build/telosb/main.ihex.out-1
</PRE>
  <P>Now, remove the first telosb from the USB port, insert the batteries, and 
  set it aside. Insert the second telos into the USB port and once again type 
  <CODE>motelist</CODE>. You should again see something like: </P><PRE>$ motelist
Reference  CommPort   Description
---------- ---------- ----------------------------------------
UC9VN03I   COM14      Telos (Rev B 2004-09-27)
</PRE>
  <P>Finally, type <CODE>make telosb reinstall,2</CODE> and you should once 
  again see something like the following scroll by: </P><PRE>$ make telosb reinstall,2
tos-set-symbols --objcopy msp430-objcopy --objdump msp430-objdump --target ihex build/telosb/main.ihex 
build/telosb/main.ihex.out-2 TOS_NODE_ID=2 ActiveMessageAddressC$addr=2
    found mote on COM14 (using bsl,auto)
    installing telosb binary using bsl
tos-bsl --telosb -c 13 -r -e -I -p build/telosb/main.ihex.out-2
MSP430 Bootstrap Loader Version: 1.39-telos-8
Mass Erase...
Transmit default password ...
Invoking BSL...
Transmit default password ...
Current bootstrap loader version: 1.61 (Device ID: f16c)
Changing baudrate to 38400 ...
Program ...
9072 bytes programmed.
Reset device ...
rm -f build/telosb/main.exe.out-2 build/telosb/main.ihex.out-2
</PRE>
  <P><B><FONT color=red>At this point, both motes should be blinking their 
  LEDs.</FONT></B> If you press the RESET button on either telosb, then the LEDs 
  on the <I>other</I> telosb will pause on whatever was being displayed at the 
  moment you pressed RESET. When you release the RESET the button, the paused 
  mote will be reset and then resume counting from one. </P></LI></OL><A 
name=Conclusions></A>
<H1><SPAN class=mw-headline>Conclusions</SPAN></H1>
<P>This lesson has introduced radio communications TinyOS 2.x. </P><A 
name=Related_Documentation></A>
<H1><SPAN class=mw-headline>Related Documentation</SPAN></H1>
<OL class=references>
  <LI id=_note-fn1>↑ <SUP><A title="" 
  href="http://docs.tinyos.net/index.php/Mote-mote_radio_communication#_ref-fn1_0">1.0</A></SUP> 
  <SUP><A title="" 
  href="http://docs.tinyos.net/index.php/Mote-mote_radio_communication#_ref-fn1_1">1.1</A></SUP> 
  <A class="external text" 
  title=http://www.tinyos.net/tinyos-2.x/doc/html/tep111.html 
  href="http://www.tinyos.net/tinyos-2.x/doc/html/tep111.html" rel=nofollow>TEP 
  111: message_t</A> 
  <LI id=_note-fn3><A title="" 
  href="http://docs.tinyos.net/index.php/Mote-mote_radio_communication#_ref-fn3_0">↑</A> 
  <B>Programming Hint 15:</B>Always use platform independent types when defining 
  message formats. From Phil Levis' <A class="external text" 
  title=http://csl.stanford.edu/~pal/pubs/tinyos-programming-1-0.pdf 
  href="http://csl.stanford.edu/~pal/pubs/tinyos-programming-1-0.pdf" 
  rel=nofollow><I>TinyOS Programming</I></A> 
  <LI id=_note-fn4><A title="" 
  href="http://docs.tinyos.net/index.php/Mote-mote_radio_communication#_ref-fn4_0">↑</A> 
  <B>Programming Hint 16:</B>If you have to perform significant computation on a 
  platform independent type or access it many (hundreds or more) times, then 
  temporarily copying it to a native type can be a good idea. From Phil Levis' 
  <A class="external text" 
  title=http://csl.stanford.edu/~pal/pubs/tinyos-programming-1-0.pdf 
  href="http://csl.stanford.edu/~pal/pubs/tinyos-programming-1-0.pdf" 
  rel=nofollow><I>TinyOS Programming</I></A></LI></OL>
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