[Discuss-gnuradio] Re: [USRP-users] UHD Announcement - February 25rd 2011

[Thomas Tsou]

On Fri, Feb 25, 2011 at 8:32 PM, Josh Blum <address@hidden> wrote:
> Hello list,
>
> In preparation for the coming gnuradio release, and the cut-over from
> next to master, changes have been pushed to both the uhd.git master
> branch and the gnuradio.git next branch.

I'm getting the following timeouts after the update. I presume this has
something to do with buffering since it always occurs at the same packet
number - code change at end. Same result on e100 and rlt NIC's.

address@hidden examples]$ ./tx_timed_samples --secs 4 --nsamps 400000 --rate 
400e3 --dilv --spp 864
linux; GNU C++ version 4.5.1 20100924 (Red Hat 4.5.1-4); Boost_104400; 
UHD_003.20110226000831.77641c6


Creating the usrp device with: ...
Current recv sock buff size: 50000000 bytes
mboard0 MIMO master
Using Device: Single USRP:
  Device: USRP2/N Series device
  Mboard 0: USRP-N210 mboard
  RX DSP 0: USRP-N210 ddc0
  RX Channel: 0
    RX Dboard: USRP-N210 dboard (rx unit)
    RX Subdev: Unknown - Unknown (0xffff)
  TX DSP 0: USRP-N210 duc0
  TX Channel: 0
    TX Dboard: USRP-N210 dboard (tx unit)
    TX Subdev: Basic TX (0x0000) - AB

Setting TX Rate: 0.400000 Msps...
Actual TX Rate: 0.400000 Msps...

Setting TX Freq: 0.000000 Mhz...
Actual TX Freq: 0.000000 Mhz...

Setting device timestamp to 0...
Send timeout... Sent 362 samples of packet 237
Send timeout... Sent 0 samples of packet 238
Send timeout... Sent 0 samples of packet 239
Send timeout... Sent 0 samples of packet 240
Send timeout... Sent 0 samples of packet 241
...

  Thomas

---
 host/examples/tx_timed_samples.cpp |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/host/examples/tx_timed_samples.cpp 
b/host/examples/tx_timed_samples.cpp
index f10d7e4..1f87ae3 100644
--- a/host/examples/tx_timed_samples.cpp
+++ b/host/examples/tx_timed_samples.cpp
@@ -106,7 +106,8 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
             //send will backup into the host this many seconds before sending:
             seconds_in_future + 0.1 //timeout (delay before transmit + padding)
         );
-        if (num_tx_samps < samps_to_send) std::cout << "Send timeout..." << 
std::endl;
+        if (num_tx_samps < samps_to_send)
+            std::cout << "Send timeout... Sent " << num_tx_samps << " samples 
of packet " << i << std::endl;
         if(verbose) std::cout << std::endl << boost::format("Sent %d samples") 
% num_tx_samps << std::endl;
     }

--