Dear Daniel, Okay I'll try that experiment out now. How do you turn off synchronization?
You can put some dbg statements in the tinyos-1.x/tos/platform/pc/RadioCRCPacket.nc and grep the output to see if they get printed out. Warmest regards, -- Nikolas Pontikos. On 26/10/06, Daniel S. Menasche <[EMAIL PROTECTED]> wrote:
Dear Nikolas, I'm using tinyos-1.x and /nfs/copa/tmp1/tinyos-1.x/tos/platform/pc/external_comm.c If you try your experiment with 100 or more nodes and the nodes send messages every 5 seconds without synchronization I think you will get lots of CRC errors... How may I figure out if I'm using RadioCRCPacket.nc? Best regards, Daniel On Thu, 2006-10-26 at 09:56 +0100, Nikolas wrote: > Dear Daniel, > > Are you sure about this? I've just ran the simulation in tossim on a > 40 node network and I don't see "Failed CRC" come up at all. Is your > application using tos/platform/pc/RadioCRCPacket.nc? Also just to > confirm, we are both using tinyos-1.x here right? > > Kindest regards, > -- > Nikolas Pontikos. > > On 26/10/06, Daniel S. Menasche <[EMAIL PROTECTED]> wrote: > > Dear Nikolas, > > > > > > I haven't studied the source code of Tiny OS but I have a question which > > is just the complement of yours: could someone please guide me as to how > > get collision simulation NOT working in tossim? > > > > If you start an application with 100 or more nodes in tossim, you will > > notice that CRC errors will happen even if you use the "simple" model > > for the channel... the "lossy" model can be turned on by setting the > > option "-r=lossy" when you run main.exe. > > > > Best regards, > > > > Daniel > > > > > > > > On Thu, 2006-10-26 at 03:57 +0100, Nikolas wrote: > > > Hi, > > > > > > I'm using tossim for tinyos-1.x. From looking at the files in > > > tos/platform/pc, I've noticed that there's a file called packet_sim.c > > > which seems to simulate collisions by corrupting packets when > > > a packet is received at the same time one is transmitted. However I > > > haven't seen this code getting called. If you look at > > > tos/platform/pc/Nido.nc you will that RadioSendMsg.send calls > > > transmit_packet in packet_sim.c. > > > So what I've done so far is add a wiring Send=Nido.RadioSendMsg so > > > that transmit_packet gets called. I still haven't seen the collision > > > code in packet_sim.c get called and furthermore I have witness the > > > program crash with a segmentation fault so this probably not the way > > > to do it. > > > > > > So could someone please guide me as to how get collision simulation > > > working in tossim? > > > > > > Thank you for your time, > > > -- > > > Nikolas Pontikos. > > > _______________________________________________ > > > Tinyos-help mailing list > > > Tinyos-help@Millennium.Berkeley.EDU > > > https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > > > > > _______________________________________________ > Tinyos-help mailing list > Tinyos-help@Millennium.Berkeley.EDU > https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
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