Re: [Discuss-gnuradio] benchmark tx and rx help

[Kyle Zhou]

Please check line 113 of benchmark_tx.py
data = (pkt_size - 2) * chr(pktno & 0xff)
Therefore, only the LSB 8 bit of pktno is transmitted in the payload.
And please note 257=0x0101, 514=0x0202. So they are payload contents for 
packet 1 and 2, respectively.
You've just missed packet 0. Not quite sure the reason.
I guess it might be likely that synchronization at receiver has not been 
accomplished such that packet 0 is not received correctly.

To transmit your own data, you can use --from-file option. The file has 
to be in binary format. It does not matter what file extension you use. 
The transmitter just transmits the file contents byte by byte.
Regards
Kyle

> Thanks again for
> replies..
> I'm looking for
> transmitted data (dbpsk mod).For instance (package_size=1500) when pktno=0
> (first loop) package should contain 1498 'x00' and package no. At the
> receiver side i'm looking into the package by reading payload[2:4] but i
> see 257 for first package 514 for second package and for every new package
> it is increasing by 257.I expected to see 1 2 3.. and so on ..What can be
> the reason of this? How shoul i read the coming data at the receiver
> side?
> Best Regards
> Merve
>
>