platforms - tinyos documentation wiki.htm

从官方网站上下载tinyos2.0的学习指南

 configuration PlatformLedsC {
   provides interface GeneralIO as Led0;
   provides interface GeneralIO as Led1;
   provides interface GeneralIO as Led2;
   uses interface Init;
 }
 implementation
 {
   components
       HplMsp430GeneralIOC as GeneralIOC
     , new Msp430GpioC() as Led0Impl
     , new Msp430GpioC() as Led1Impl
     , new Msp430GpioC() as Led2Impl
     ;
   components PlatformP;
 
   Init = PlatformP.LedsInit;
 
   Led0 = Led0Impl;
   Led0Impl -> GeneralIOC.Port54;
 
   Led1 = Led1Impl;
   Led1Impl -> GeneralIOC.Port55;
 
   Led2 = Led2Impl;
   Led2Impl -> GeneralIOC.Port56;
 
 }
 
</PRE>
<P>We refer the reader to the TinyOS Programming Guide cited below for more 
explanations on how the above confiuration uses generics (ie with the "new" 
keyword). For the purpose of this lesson, the key point is that we are wiring to 
ports 5.4, 5.5, and 5.6 -- we shall suppose that these are the MSP430 
microcontroller pins to which the three Leds are connected on the yamp platform. 
</P>
<P>With the above file in place, we can now compile Blink for the yamp platform. 
How do we test that the application actually works? We have thus far presented 
yamp as an imaginary platform, but it turns out that the above application 
should work on any platform with the MSP430x1611 microcontroller and where the 
Leds are connected to microcontroller ports 5.4-5.6. Not entirely 
coincidentally, these are exactly the Led wirings used by the telos/tmote 
platforms. So those readers that have a telos/tmote at hand can test this 
application on it. (Testing on a tinynode or eyes mote is also easy and only 
requires changing the pin wirings in PlatformLedsC to follow those of that 
platform; running this application on mica-family motes will require more 
changes since they use a different microcontroller). </P>
<P>Now, enter the following command (where you have suitably replaced 
/dev/ttyXXX by the appropriate serial port), </P><PRE>  make yamp install bsl,/dev/ttyXXX
</PRE>
<P>and you will see the Leds of your impersonated (by a telos) yamp node 
Blinking! </P><A name=Conclusion></A>
<H1><SPAN class=mw-headline>Conclusion</SPAN></H1>
<P>This lesson has introduced the notion of per-platform support in TinyOS using 
as a guiding example the development of a platform port to an imaginary "yamp" 
platform. We have seen how introducing support for a new platform requires 
touching not only nesc code but also adding some rules to the build system. This 
tutorial also touched upon the notions of Hardware Abstraction Architecture 
(HAA) that is central to the clean and modular support of different platforms 
and chips in TinyOS. </P>
<P>The steps outlined here did not cover what is the hardest part of a platform 
port: developping the components to drive a radio transceiver or MCU (which are 
necessary if the platform uses chips that are not currently supported in 
TinyOS). Developping such drivers is an advanced topic that is beyond the scope 
of the tutorials; for those curious to gain some insight we recommend perusing 
the code for a chip (e.g the CC2420 radio in tos/chips/cc2420 or the xe1205 
radio in tos/chips/xe1205) armed with that chips datasheet and the platform 
schematics. </P><A name=Related_Documentation></A>
<H1><SPAN class=mw-headline>Related Documentation</SPAN></H1>
<UL>
  <LI><A class="external text" title=https://sourceforge.net/projects/nescc 
  href="https://sourceforge.net/projects/nescc" rel=nofollow>nesc at 
  sourceforge</A> 
  <LI><A class="external text" 
  title=http://nescc.sourceforge.net/papers/nesc-ref.pdf 
  href="http://nescc.sourceforge.net/papers/nesc-ref.pdf" rel=nofollow>nesC 
  reference manual</A> 
  <LI><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>TinyOS Programming Guide</A> 
  <LI><A class="external text" 
  title=http://www.tinyos.net/tinyos-2.x/doc/html/tep102.html 
  href="http://www.tinyos.net/tinyos-2.x/doc/html/tep102.html" rel=nofollow>TEP 
  2: Hardware Abstraction Architecture</A> 
  <LI><A class="external text" 
  title=http://www.tinyos.net/tinyos-2.x/doc/html/tep106.html 
  href="http://www.tinyos.net/tinyos-2.x/doc/html/tep106.html" rel=nofollow>TEP 
  106: Schedulers and Tasks</A> 
  <LI><A class="external text" 
  title=http://www.tinyos.net/tinyos-2.x/doc/html/tep107.html 
  href="http://www.tinyos.net/tinyos-2.x/doc/html/tep107.html" rel=nofollow>TEP 
  107: TinyOS 2.x Boot Sequence</A> 
  <LI><A class="external text" 
  title=http://www.tinyos.net/tinyos-2.x/doc/html/tep117.html 
  href="http://www.tinyos.net/tinyos-2.x/doc/html/tep117.html" rel=nofollow>TEP 
  117: Low-level I/O</A> 
  <LI><A class="external text" 
  title=http://tinyos.cvs.sourceforge.net/*checkout*/tinyos/tinyos-2.x/doc/html/tep131.html 
  href="http://tinyos.cvs.sourceforge.net/*checkout*/tinyos/tinyos-2.x/doc/html/tep131.html" 
  rel=nofollow>TEP 131: Creating a New Platform for TinyOS 2.x</A> </LI></UL>
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