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[Discuss-gnuradio] [UHD] Time delay does not work


From: Sangho Oh
Subject: [Discuss-gnuradio] [UHD] Time delay does not work
Date: Thu, 30 Dec 2010 22:54:28 -0500


Hello,

I am sending 802.11 packet using "tx_waveforms"
I have modified the code to read samples from a file.
The file is 2560000 samples for 1000 802.11 packets.
When I give 0 sec delay, gnuradio transmits packets and I have receive the packets from my laptop in monitor mode.
But if I give any delay, the packet seems not transmitted nor delayed.


------------------------------------------------------------------------------------------------------------------------------------
address@hidden:~/git/uhd/host/build/examples# ./tx_waveforms --args addr=192.168.10.2 --freq 2427e6 --nsamps 2560001 --txrate 20e6 --gain 15 --secs 2

linux; GNU C++ version 4.4.1; Boost_103800; UHD_0001.20101229023217.253ac61


Creating the usrp device with: addr=192.168.10.2...
Current recv sock buff size: 50000000 bytes
Using Device: Single USRP:
  Device: USRP2/N Series device
  Mboard: USRP2-REV3 mboard
  RX DSP: USRP2-REV3 ddc0
  RX Channel: 0
    RX Dboard: USRP2-REV3 dboard (rx unit)
    RX Subdev: XCVR2450 (0x0061)
  TX DSP: USRP2-REV3 duc0
  TX Channel: 0
    TX Dboard: USRP2-REV3 dboard (tx unit)
    TX Subdev: XCVR2450 (0x0060)

Setting TX Rate: 20.000000 Msps...
Actual TX Rate: 20.000000 Msps...
Setting device timestamp to 0...
Read data to send from file: in.dat
Number of samples in file: 2560001

Sent 257382 samples

Done!




--
From: Sangho Oh
Voice mail: (609) 759-1552




--
From: Sangho Oh
Voice mail: (609) 759-1552


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