You probably wiped out the comm jar and properties files when you
reloaded the JRE. Just because, I have a copy here:
http://www.etantdonnes.com/TMP/javacomm20-win32.zip
and there are install instructions in it someplace.
MS
Prashant Kr. Gupta wrote:
Hi there
i had installed tinyos 1.1.0 with that jdk 1.4.1 was installed too...
prior to that there was no jdk installed on the system... the comm
libraries worked fine then....
later i needed to install jsapi; my system failed to read any valid JVM
on the machine... so i installed jdk 1.4.1 available on sun's site...
after that the jsapi works fine... but there is an error whenever i want
to use Listen
Exception in thread "main" java.lang.NoClassDefFoundError:
javax/comm/SerialPortEventListener
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:502)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12
3)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:250)
at java.net.URLClassLoader.access$100(URLClassLoader.java:54)
at java.net.URLClassLoader$1.run(URLClassLoader.java:193)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:186)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:265)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
at net.tinyos.packet.BuildSource.makeSerial(BuildSource.java:364)
at
net.tinyos.packet.BuildSource.makeArgsSerial(BuildSource.java:353)
at
net.tinyos.packet.BuildSource.makePacketSource(BuildSource.java:145)
at
net.tinyos.packet.BuildSource.makePacketSource(BuildSource.java:118)
at net.tinyos.tools.Listen.main(Listen.java:47)
i dunno what to do...
plz help
thanks
prashant
On 5/16/06, *Michael Schippling* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
You should be able to set xmit power dymanically using:
// set Xmit strength
// mica2 916 Mhz -20 0x02 -- 2
// -10 0x09 -- 9
// 0 (1mw) 0x80 -- 128
// 5 0xFF -- 255
call CC1000Control.SetRFPower( value );
There is a similar i'face for the micaz as well, but I don't have
an example right at hand.
Also if you compile under the contrib/xbow tree you get the
MakeXbowLocal
file that has a compile time define for xmit power. In fact, I was not
completely successful at getting the mica2 radio to work without the
xbow
code. I know that tree is usable with 1.1.7 and above, so you don't
need
to go all the way to .15.
MS
Aditya Bhave wrote:
> If you are using the MICA2 motes with tinyos-1.1.10 you should
edit the
> CC1000Const.h file in /tos/platform/mica2.
> Scroll down to CC1K_Params[5][31] in the file. Depending on the
freq of
> the motes you are using, you should change the contents of PA_POW
at the
> appropriate place. The default value is 0xff. If you change it to
0x00
> you can get a range of 3 feet or around that much.
>
> If you are using tinyos-1.1.15 you should edit the MakeXbowLocal
file.
> Check the manual that comes on the CD to see what and where to
change.
>
> I perosnally did the above in my project. If you figure out how
the same
> thing can be done using the Pots interface in the program itself,
please
> let me know. Thanx
>
> On 5/15/06, *Prashant Kr. Gupta* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>> wrote:
>
> I have been trying to reduce the radio range by using Pot
interface...
> but it seems that it doesn't helps much... what can i do
>
> thanks
> prashant
>
> _______________________________________________
> Tinyos-help mailing list
> [email protected]
<mailto:[email protected]>
> <mailto:[email protected]
<mailto:[email protected]>>
>
https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>
<https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
<https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help>>
>
>
>
>
>
> --
> regards,
> Aditya Bhave
>
>
>
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