FreeDV-JATE [Just Another TNC Experiment]

002_HIGHSNR_PING_PONG

INSTALL TEST SUITE

Install prerequierements

sudo apt update
sudo apt upgrade
sudo apt install git cmake build-essential python3-pip portaudio19-dev python3-pyaudio
pip3 install crcengine
pip3 install threading

Go into a directory of your choice Run the following commands --> They will download and compile the latest codec2 ( dr-packet ) files and LPCNet as well into the directory of your choice

wget https://raw.githubusercontent.com/DJ2LS/FreeDV-JATE/002_HIGHSNR_PING_PONG/install_test_suite.sh
chmod +x install_test_suite.sh
./install_test_suite.sh

PARAMETERS

parameter	description	side
- -txmode 12	set the mode for FreeDV ( 10,11,12,14 )	Terminal 1 & Terminal 2
- -rxmode 14	set the mode for FreeDV ( 10,11,12,14 )	Terminal 1 & Terminal 2
- -frames 1	set the number of frames per burst	Terminal 1
- -bursts 1	set the number of bursts	Terminal 1
- -audioinput 2	set the audio device	Terminal 1 & Terminal 2
- -audiooutput 1	set the audio device	Terminal 1 & Terminal 2
- -debug	if used, print additional debugging output	Terminal 1 & Terminal 2

AUDIO TESTS VIA VIRTUAL AUDIO DEVICE

Create audio sinkhole and subdevices

Note: This command needs to be run again after every reboot

sudo modprobe snd-aloop index=1,2 enable=1,1 pcm_substreams=1,1 id=CHAT1,CHAT2

check if devices have been created

aplay -l

Output should be like this:

    Karte 0: Intel [HDA Intel], Gerät 0: Generic Analog [Generic Analog]
      Sub-Geräte: 1/1
      Sub-Gerät #0: subdevice #0
    Karte 1: CHAT1 [Loopback], Gerät 0: Loopback PCM [Loopback PCM]
      Sub-Geräte: 1/1
      Sub-Gerät #0: subdevice #0
    Karte 1: CHAT1 [Loopback], Gerät 1: Loopback PCM [Loopback PCM]
      Sub-Geräte: 1/1
      Sub-Gerät #0: subdevice #0
    Karte 2: CHAT2 [Loopback], Gerät 0: Loopback PCM [Loopback PCM]
      Sub-Geräte: 1/1
      Sub-Gerät #0: subdevice #0
    Karte 2: CHAT2 [Loopback], Gerät 1: Loopback PCM [Loopback PCM]
      Sub-Geräte: 1/1
      Sub-Gerät #0: subdevice #0

Run tests:

Terminal 1: Ping

python3 PING.py --txmode 12 --rxmode 14 --audioinput 2 --audiooutput 2 --frames 1 --bursts 2

Output

BURSTS: 2 FRAMES: 1
-----------------------------------------------------------------
TX | PING | BURST [1/2] FRAME [1/1]
RX | PONG | BURST [1/2] FRAME [1/1]
-----------------------------------------------------------------
TX | PING | BURST [2/2] FRAME [1/1]
RX | PONG | BURST [2/2] FRAME [1/1]

Terminal 2: Pong

python3 PONG.py --txmode 14 --rxmode 12 --audioinput 2 --audiooutput 2