On Wed, Jun 29, 2011 at 07:44, Zhen <zkon...@yahoo.com.cn> wrote: > > The reason is that in gnuradio-examples, UDP default payload size is set to > 1471. In gr_udp_source.cc, all received data will be round down to a > multiple of d_itemsize. Since sizeof_gr_complex is 8, so only 1464 Bytes are > received correctly, while the left 7 byte are abandoned. This will in turn > disturb the position of the following data stream, and also affect the > mmse_fir_interpolator > and make imu negative. > > Actually, the default UDP payload size in gr_udp_source.h is set to 1472, > but in examples, it is set to 1471. I am not sure if this is a bug. A > simple way to bypass this problem is to set MTU size as a multiple of > itemsize, such as 1464 or 1472, then everything works as expected. >
Very nice catch. I have yet looked at the code to verify this, but your description sounds plausible. Thanks! Johnathan
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
