[Tinyos-devel] TOS_AM_GROUP

[Philip Levis]

On Feb 6, 2008, at 7:43 AM, David Moss wrote:

> There has been a change to the way TinyOS defines its  
> TOS_AM_GROUP.  According to the unit test here http:// 
> www.lavalampmotemasters.com/reports/html/1_micaz/tests/tinyos-2/x/ 
> tos/system/10_TestActiveMessageAddressC.html the TOS_AM_GROUP and  
> DEFINED_TOS_AM_GROUP are both set to 125 (0x7D).  Up until the  
> other day, it was 0x22.
>
>
>
> I notice DEFINED_TOS_AM_GROUP is being set by the .rules files  
> instead of AM.h now:
>
>
>
> ifdef DEFAULT_LOCAL_GROUP
>
> PFLAGS += -DDEFINED_TOS_AM_GROUP=$(DEFAULT_LOCAL_GROUP)
>
> endif
>
>
>
> And you can see this when compiling:
>
>
>
> ncc -o build/tmote2500/main.exe -Os -O -mdisable-hwmul -Wall - 
> Wshadow -Wnesc-all -target=tmote2500 -fnesc-cfile=build/tmote2500/ 
> app.c -board= -DDEFINED_TOS_AM_GROUP=0x7d  …
>
>
>
> Obviously this isn’t backwards compatible with other TinyOS  
> networks, and AM.h now gives you a false sense of what’s really  
> happening.  Can someone look into this behavior?
>

We fixed a bug, which caused a bug! The group should have been 0x7d,  
as per support/make/Makedefaults, but the defines were being  
referenced incorrectly. To be backwards compatible, I've updated  
Makedefaults to have 0x22 as the default.

Phil