This site describes the message format and CRC calculation:
http://www.octavetech.com/pubs/TB5-01%20Deciphering%20TinyOS%20Serial%20Packets.pdf

There's also code in TOS (well...duh) and the java tools which
does the CRC. I know one is called crc.java

MS

jurin dan wrote:
hi, i have the raw data packet below receive with xlisten app:
*$ xlisten -r -b=mica2 -s=COM4 -t*

*xlisten Ver:$Id: xlisten.c,v 1.2 2005/06/21 01:36:06 pipeng Exp $*

*Using params: [baud=0x1001] [raw] [timed]*

*COM4 input stream opened*

*[2007/04/04 10:40:35]*

*7e42ffff007d5d1d840101009101000000007100000031037d5d0230030000000000000000007964 [40]*

CRC = 0x6479 (last bytes) i woul like to know how i could use the CRC to check the integrity of the transmitted packet.
and which byte of the packet are taking in acount to compute the CRC.
thanx for your help


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