I am using basic Listen tool .. It does not require TOSH_DATA_LENGTH
Actually .. even tough
00 FF FF 00 00 ---*27---* 00 93 {1E 70 19 12 20 56 E9 80 30 C5 9B 05 32 2D
47 A7 63 0E 12
56 62 08 53 DB 1C F9 9E 7E 2E 90 7A 37 5E F5 C1 CD 04 04 04}
is giving payload length 27 .. actually .. if i count no of bytes after 93
(handler ID) then no of bytes are 39 .. which equals my TOSH_DATA_LENGTH .
I am confused with .. other data packet .. which is not structured by me .
00 FF FF 00 00 09 00 72 21 00 13 00 01 00 01 {00 69 } of this structure ..
bracketed part is a counter .. which increments on each data reception .
So for each packet i received from radio. Serially i am receiving 2 packets
.. Can you tell me why ?
2009/8/4 Michael Schippling <[email protected]>
> Did you remake both your base-station and the java code using
> the new DATA_LENGTH?
> MS
>
>
> himanshu barve wrote:
>
>> Hello friends .. I am having some problem when i receive packet data . I
>> am using Listen tool to just have look at what packets i am receiving .. I
>> have already changed TOSH_DATA_LENGTH thus i am able to send 9*4 +3*1 = 39
>> byte data . Now on base mote (connected to pc) i have developed a program
>> which on reception of data from radio , transfer it to pc via serial data
>> transfer . This program is motivated from Oscilloscope program. I am
>> working on telosb platform in T2.
>>
>> my header file contain structure oscilloscope as
>> typedef nx_struct oscilloscope {
>> nx_int32_t reading1;
>> nx_int32_t reading2;
>> nx_int32_t reading3;
>> nx_int32_t reading4;
>> nx_int32_t reading5;
>> nx_int32_t reading6;
>> nx_int32_t reading7;
>> nx_int32_t reading8;
>> nx_int32_t reading9;
>> nx_int8_t reading10;
>> nx_int8_t reading11;
>> nx_int8_t reading12;
>>
>> } oscilloscope_t;
>>
>> and Packet data i am getting is .. (with the help of Listen)
>>
>> 00 FF FF 00 00 09 00 72 21 00 13 00 01 00 01 00 69
>> 00 FF FF 00 00 27 00 93 1E 70 19 12 20 56 E9 80 30 C5 9B 05 32 2D 47 A7 63
>> 0E 12
>> 56 62 08 53 DB 1C F9 9E 7E 2E 90 7A 37 5E F5 C1 CD 04 04 04
>>
>>
>> 1) Here we can observe that .. PC is receiving 2 messages for only one
>> radio message .. WHY ?
>> 2) My message length is 39 here 00 FF FF 00 00 ---*09---* 00 72 21 00 13
>> 00 01 00 01 00 69
>> 00 FF FF 00 00 ---*27---* 00 93 1E 70 19 12 20 56 E9 80 30 C5 9B 05 32 2D
>> 47 A7 63 0E 12
>> 56 62 08 53 DB 1C F9 9E 7E 2E 90 7A 37 5E F5 C1 CD 04 04 04
>>
>> it is either 9 or 27 .. which on adding becomes 38 . all three does not
>> equals with my payload length.
>> 3) 00 FF FF 00 00 09 00 72 21 00 13 00 01 00 01 -----*00 69-------*
>> 00 FF FF 00 00 27 00 93 1E 70 19 12 20 56 E9 80 30 C5 9B 05 32 2D 47 A7 63
>> 0E 12
>> 56 62 08 53 DB 1C F9 9E 7E 2E 90 7A 37 5E F5 C1 CD 04 04 04
>>
>> the bold part is counter .. which is not set by me ..
>> please help .. thanks in advance ..
>>
>>
>> --
>> With Best Regards
>> Himanshu Barve
>> M.Tech Electrical Engineering (Power System)
>> IIT Kharagpur , West Bengal , India
>> Ph: - +91 9775201181
>>
>>
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> Tinyos-help mailing list
>> [email protected]
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>>
>
--
With Best Regards
Himanshu Barve
M.Tech Electrical Engineering (Power System)
IIT Kharagpur , West Bengal , India
Ph: - +91 9775201181
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