f5oeo/dvbsdr

DVB transmit and receive

dvbsdr's Issues

Short frame not working

jetson_nano.sh doesn't run with LKV

Dear Evariste,

after several try giving up with Jetson. I've re-installed SO for three times, formatting the card, and restarting from a fresh installation. The system won't run, it starts, there is the udp packets incoming from LKV devices, but no TS. Something goes wrong in the ffmpeg or in the script. I'm thinking that it's possible to use only with the camera installed directly on the board, in the F4HSL way or like in yours youtube video.

DD4YR experieced the same issue.

I followed exactly the Wiki installation : https://wiki.batc.org.uk/Jetson_Nano

This combination unfortunately is unreliable and if there will not solution I will decide to leave this way.

73 Alex.

Picamera resolution nanoencode.sh

It seems there is an error in the nanoencode.sh
gst-launch-1.0 -q nvarguscamerasrc ! "video/x-raw(memory:NVMM),width=768, height=432,
Picamera asked resolution is fixed to 768*432

When upsample set to 1 power setting has no effect

Peak bitrate nanoencode.sh

According to Nvidia documentation parameter peakbitrate is not necessary when omxh265 control rate parameter is not vbr (Value 1)
omxh265enc control-rate=2 bitrate=$VIDEOBITRATE peak-bitrate=$VIDEOPEAKBITRATE

Jetson nano sudo issue

Need to remove sudo for Lime_dvb as it is required on script but sometimes is hidden around all debug.

Does this work with the LimeSDR Mini?

Hi There

Just a quick question. Does dvbsdr work with the LimeSDR mini, without any other dependencies?

Thanks

Codec problem

Seems to be a problem with Jetson codec not refreshing images, even at high bandwidths leaving ghosts. This was not there with the higher latency.

Platform detection broken for Jetson Nano

Latest jetson nano build is not recognised by detect_platform.sh

Change "jetson-nano" to "Jetson" to resolve.

VUI parameters nanoencode.sh

Jetson nano Latency

Latency seems OK with UDP output but not with modulation.

Leansdr compilation

Need to modify Makefile with -DLEANSDR_EXTENSION to allow DVBS2

Jetson Nano & LIME

IK4IDY - Alex

I followed instruction of :https://wiki.batc.org.uk/Jetson_Nano . I don't use Portsdown, only Jetson Lime and LKV converter

I can see the LKV stream on VLC, I configure the script jetson_nano.sh for the exact UDP address.

When the lime TX Minitioune decode correctly but I can't see images, and furthermore no call sign in the minitiouner.

Something goes wrong and I can't understand if it's necessary a further configuration.

Help wanted.

Thank you.

Issue with running at 146.5MHz or Below

Hi,

The setup is Jetson Nano with Portsdown Control and Lime Mini (all up-to-date) and Minitiouner Rx PiCam and USB Mic on the Jetson.

I'm getting good results at 70cm and above, very stable and runs for many hours without issue, but at 2m and below the output is very flakey, the on 146MHz Lime Mini sometimes produces no RF at all, sometimes just wide-band noise and on occasions a decent signal. No issues in running the Lime direct from the Portsdown at 146.5MHz (without H265 of course).

Any idea why the lower frequencies seem to have a problem?

Justin G8YTZ

csdr not compiling for Nano Jetson

Hi, I am having trouble compiling csdr on the nano jetson.
I get the following errors, But not sure if I should be posting it here or not.
Thanks.
MikeK

mikek@mikek-jetson:~/Documents/dvbsdr/build/csdr$ make
NOTE: you may have to manually edit Makefile to optimize for your CPU (especially if you compile on ARM, please edit PARAMS_NEON).
Auto-detected optimization parameters: -mfloat-abi=hard -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mvectorize-with-neon-quad -funsafe-math-optimizations -Wformat=0 -DNEON_OPTS

rm -f dumpvect*.vect
gcc -std=gnu99 -O3 -ffast-math -fdump-tree-vect-details -dumpbase dumpvect -mfloat-abi=hard -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mvectorize-with-neon-quad -funsafe-math-optimizations -Wformat=0 -DNEON_OPTS fft_fftw.c libcsdr_wrapper.c -g -lm -lrt -lfftw3f -DUSE_FFTW -DLIBCSDR_GPL -DUSE_IMA_ADPCM -Wno-unused-result -fpic -shared -Wl,-soname,libcsdr.so.0.15 -o libcsdr.so.0.15
gcc: error: unrecognized command line option ‘-mfloat-abi=hard’
gcc: error: unrecognized command line option ‘-mfpu=neon’
gcc: error: unrecognized command line option ‘-mvectorize-with-neon-quad’
Makefile:52: recipe for target 'libcsdr.so' failed
make: *** [libcsdr.so] Error 1

Performance at high bitrate

When bitrate is more than 1MS, there could be some droppout out of modulator.