You might want to see the thread with this subject "erroneous data in received packets" for discussion on a related topic.
- om_p On Wed, Apr 20, 2011 at 4:28 PM, Xiaohui Liu <whu...@gmail.com> wrote: > Are the packet corruption caused by fase positive of CRC? Essentially I'm > just trying to see if these corrupted packets are due to the inherent limit > of the radio stack or some bug in my code. > Best regards, > > On Wed, Apr 20, 2011 at 3:07 PM, Xiaohui Liu <whu...@gmail.com> wrote: >> >> Thanks for your reply. >> So you mean received packet payload can be different from its payload at >> the sender side? If so, what's the probability for this case to happen, >> approximately? Does this apply to UART stack as well besides radio stack? >> >> On Wed, Apr 20, 2011 at 2:40 PM, Omprakash Gnawali >> <gnaw...@cs.stanford.edu> wrote: >>> >>> On Tue, Apr 19, 2011 at 9:31 AM, Xiaohui Liu <whu...@gmail.com> wrote: >>> > Hi everyone, >>> > A packet is sent with AMSenderC[AM_TYPE].Send.send and it has a payload >>> > of, >>> > say, 0xFF. After the packet is received by >>> > AMReceiverC[AM_TYPE].Receive.receive, sometimes I find it has a >>> > different >>> > payload (i.e., not 0xFF). But the probability for this to happen is >>> > low, >>> > around 1 out of 1000 packets. Is this expected in TinyOS or does this >>> > mean >>> > there is something wrong with my code? In general, can I regard the >>> > payload >>> > of a packet received by AMReceiverC[AM_TYPE].Receive.receive is the >>> > same as >>> > its payload when sent by AMSenderC[AM_TYPE].Send.send? Or should I add >>> > some >>> > more error-detection or even correction to ensure this >>> > assumption? Thanks. >>> >>> As long as your error detection or correction can guarantee these >>> properties. Most likely you will be able to increase the probability >>> of detection or correction but it would be hard to guarantee that. >>> >>> - om_p >> >> >> >> -- >> -Xiaohui Liu > > > > -- > -Xiaohui Liu > _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
