[Discuss-gnuradio] out of tree module with code generation problem

2013-06-08 Thread Achilleas Anastasopoulos
I have an out of tree module and I want to create a block that is automatically expanded for different input/output types. I have changed all CMakeList.txt files according to gr-blocks directory. However "make" complaints it cannot find the buid_utils module in the generate_helper.py script. In

[Discuss-gnuradio] Detecting underflows with uhd_usrp_sink

2013-06-08 Thread Juha Vierinen
Hi, I've recently been working with a coded CW radar system that just loops over a fairly long IQ vector. It works all fine for a while, but after a few days, the transmission timing has drifted away from where it should be. I'm comparing the leading edge of the transmit waveform with the PPS prov

Re: [Discuss-gnuradio] Detecting underflows with uhd_usrp_sink

2013-06-08 Thread Josh Blum
On 06/08/2013 02:26 PM, Juha Vierinen wrote: > Hi, > > I've recently been working with a coded CW radar system that just loops > over a fairly long IQ vector. It works all fine for a while, but after a > few days, the transmission timing has drifted away from where it should be. > I'm comparing

Re: [Discuss-gnuradio] Detecting underflows with uhd_usrp_sink

2013-06-08 Thread Marcus D. Leech
L = late packet, there was a time on the packet which was> time on device when There are two different "cases" for late packets happening. The first is that you haven't sent your packet far enough in advance to account for latency variations on the host. Unfortunately, on a general-purpose

[Discuss-gnuradio] about gps lock

2013-06-08 Thread Zan Li
Dear all, I meet a problem about the gpsdo for lock. First I check the usrp->get_mboard_sensor("gps_locked",0); it indicates the gps is locked. Then the program is sleep for 5 mins. Then I check the gps again but in this time it does not lock. I do not think that in this 5 mins the gps lost lock be

Re: [Discuss-gnuradio] about gps lock

2013-06-08 Thread Marcus D. Leech
Dear all, I meet a problem about the gpsdo for lock. First I check the usrp->get_mboard_sensor("gps_locked",0); it indicates the gps is locked. Then the program is sleep for 5 mins. Then I check the gps again but in this time it does not lock. I do not think that in this 5 mins the gps lost lo

[Discuss-gnuradio] Error installing Gras

2013-06-08 Thread Yogesh Dahiya
I am trying to build gras but stuck with following error: -- Found SWIG: /usr/bin/swig (found version "1.3.40") -- Found PythonLibs: /usr/lib/libpython2.7.so CMake Error at python/gras/CMakeLists.txt:9 (include): include could not find load file: GrSwig CMake Error at python/gras/CMakeLis

[Discuss-gnuradio] Changing UHD buffer to avoid latency in Benchmark_tx.py and benchamrk_rx.py

2013-06-08 Thread Jay Prakash
I designed a hopping Primay transmitter changing few lines of Benchmark tx/rx pythob files. Now to synchronize I am having a predefined table of frequency hops on both the Receiver and transmitter. I count the packet no at both Rx and Tx and shift to a higher frequency on every multiple of 100 pa

Re: [Discuss-gnuradio] Error installing Gras

2013-06-08 Thread Josh Blum
On 06/08/2013 10:27 PM, Yogesh Dahiya wrote: > I am trying to build gras but stuck with following error: > > -- Found SWIG: /usr/bin/swig (found version "1.3.40") > -- Found PythonLibs: /usr/lib/libpython2.7.so > CMake Error at python/gras/CMakeLists.txt:9 (include): > include could not find l

Re: [Discuss-gnuradio] Error installing Gras

2013-06-08 Thread Josh Blum
>> > > Those files should be in ${GRAS_SOURCE_DIR}/PMC/cmake/Modules > > Does that directory exist for you? Did you follow the build > instructions, the submodule commands are very important for fetching all > the code. Thats my guess: > > https://github.com/guruofquality/gras/wiki/Build#get-th