> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:tinyos-help-
> [EMAIL PROTECTED] On Behalf Of Philip Levis
> Sent: Thursday, June 29, 2006 14:06
> To: [EMAIL PROTECTED]
> Cc: [email protected]
> Subject: RE: [Tinyos-help] Mate and send_lqi on Telosb/tmote
>
> On Thu, 2006-06-29 at 11:29, Ben Kelley wrote:
> > MateRoute to the MultiHop
> > format?
> >
> > I can't help but wonder if this also has something to do with the
> > AM_BUFFERMSG that my makefile keeps trying to mig.
>
> It doesn't have much to do with AM_BUFFERMSG. This is just how the Mate'
> build system gets mig to generate a Java class for the actual buffer
> data structure.
>
> It has to do with the packet format. The mig-generated packet formats
> are not the same as those the node is using. What you need to do is get
> them to agree. My intention was to get you to correct the MateRoute to
> match the MultiHop format.
>
> You want to put this in mhop.h:
>
> typedef struct MateRouteMsg {
> uint16_t sourceaddr;
> uint16_t originaddr;
> int16_t seqno;
> int16_t originseqno;
> uint16_t hopcount;
> uint8_t data[(TOSH_DATA_LENGTH - 10)];
> } MateRouteMsg;
>
> You then need to go into your VM app directory and
>
> make clean
>
> To remove all of the generated packet files. Then do the standard make,
> make install.
>
> Here are the basic issues you might run into and their causes:
>
> type UNKNOWN, type NONE: the packet format TinyOS is generating and the
> packet format the Java side is expecting do not agree. The Java side is
> looking for a type field in the buffer, and because the formats do not
> agree, it is looking in the wrong place, seeing a different byte, and
> then complaining it is not valid.
>
> too short: The packet formats do not agree. TinyOS is sending a shorter
> packet than what the Java side expects. This happens if the Java side
> has been compiled to think that the header is larger than the one TinyOS
> expects.
>
> Apologies that I can't look into the code right now: trying to get the
> 2.0 beta2 release out.
>
> Phil
>
I finally got it to work, I have no idea how.
I ended up going with
typedef struct MateRouteMsg {
uint16_t sourceaddr;
uint16_t originaddr;
int16_t seqno;
int16_t originseqno;
uint16_t hopcount;
uint8_t data[];
} __attribute__ ((packed)) MateRouteMsg;
In $TOSDIR/lib/VM/types/mhop.h
I don't believe I changed anything else; however, just for the archives, it
at least works.
Received broadcast buffer of type TTEMP, size 10 @ Wed Jul 05 17:53:30 EDT
2006
[7104][7105][7107][7107][7107][7108][7108][7108][7108][7107]
Message <MateBCastMsg>
[buffer.type=0x1]
[buffer.data.length=0x16]
[buffer.data.data=0x38 0xa 0xc0 0x1b 0xc1 0x1b 0xc3 0x1b 0xc3 0x1b 0xc3
0x1b 0xc4 0x1b 0xc4 0x1b 0xc4 0x1b 0xc4 0x1b 0xc3 0x1b 0x0 0x0 0x0 0x0 ]
Message <MateMultiHopMsg>
[sourceaddr=0x0]
[originaddr=0x0]
[seqno=0x0]
[originseqno=0x8]
[hopcount=0x0]
Ben
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