And also...I found that I had difficulty with 1.1.7 and micaz.
1.1.10 seems to work better communication wise. Be aware that
TOSBase Framer code translates micaz/AM.h radio message structs
to types/AM.h format before forwarding over the UART. This means
that you should use mica2 (not Z) in your MOTECOM on the host.
MS
Damien O'Rourke wrote:
Also see
http://www.octavetech.com/pubs/TB5-01%20Deciphering%20TinyOS%20Serial%20
Packets.pdf under general information.
Regards,
Damien.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Harri
Siirtola
Sent: 10 March 2006 08:08
To: [EMAIL PROTECTED]; [email protected]
Subject: Re: [Tinyos-help] Getting extra bytes in CRC in TOS_Msg packet
Hi Umesh,
that's just the ordinary escaping scheme of the 0x7D sync byte. It's
done
by stuffing a 0x7D into the stream and XORing the actual byte with 0x20
(0x7D xor 0x20 = 0x5D). In your case, the crc happens to have 0x7D on
that
line. A search on the list will tell you more if you want.
Regards,
Harri
At 01:04 PM 3/10/2006 +0700, S. Umesh Babu wrote:
Hello,
I am sending some packets from two micaz motes to base station.The data
observed using xlisten program.Some times i am getting crc value 3
bytes.Actually it should be 2 bytes according to TOS_Msg structure.Can
somebody explain me this.
something like following.I should get all 15 byte packets.But sometimes
i am getting 16 and larger size packets.I am using
tinyos-1.1.7July2004cvs-2.
7e42ffff0481060f0000040100cfa2 [15] 7e42ffff0481060e00fe010200db64 [15]
7e42ffff048106100000040100487d5d [16]
7e42ffff0481060f00000202003c45 [15]
Thankyou
Umesh
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