BallonSonde/tx_process/3_transmit

#!/bin/bash

if [ ! -f /ramfs/.canbetx ]; then
	echo "Nothing to transmit, wait 5 seconds"
	sleep 5
	exit 1
fi

rm /ramfs/.canbetx
echo "=> moving totx.wav to out.wav"
mv /ramfs/totx.wav /ramfs/out.wav

# Utile pour couper le TX quand on ctrl+c et que le script n'abouti pas
trap ctrl_c INT
function ctrl_c() {
    echo "Ctrl + C happened"
    raspi-gpio set 4 dh
    rm -rf /ramfs/*
}

# Setup the GPIO4 as output for Tx
raspi-gpio set 4 op && raspi-gpio set 4 dh

raspi-gpio set 4 dl
sleep 1
echo " => Playing WAV file"
cd ~/trxamadrmv3_7/linux
./txwfal 0
sleep 1
aplay ~/BallonSonde/sound/2025_stpourcain/1_prez.wav
ionice -c 2 -n 0 aplay /ramfs/out.wav

sleep 1

aplay ~/BallonSonde/sound/2025_stpourcain/2_qpsq31.wav
# Generate the wav file to Tx
/home/pi/BallonSonde/tx_process/qpsk31
# Tx the wav file !
aplay /ramfs/psk.wav

aplay ~/BallonSonde/sound/2025_stpourcain/3_cw.wav
echo "F4KOA-AM F4KOA-AM from France" | /usr/local/bin/cwwav -f 700 -w 20 -o /ramfs/cw.wav
aplay /ramfs/cw.wav; rm /ramfs/cw.wav
# On se passe 
#/home/pi/BallonSonde/read_nmea.py | awk '{print $10$3$4$5$6}' | sed -e "s/,/ /g" | sed -e "s/ NS=//g" | sed -e "s/ EW=//g" | sed -e "s/=/ /g" | /usr/local/bin/cwwav -f 700 -w 20 -o /ramfs/cw.wav
# alt 311.7 lat 46.0154466667N lon 1.0988666667E for example...
#aplay /ramfs/cw.wav; rm /ramfs/cw.wav

aplay ~/BallonSonde/sound/2025_stpourcain/4_stop.wav
raspi-gpio set 4 dh

# un peu de repos pour le transceiver :)
# et ça aide au GPS pour retrouver ses petits.
sleep 30

if [[ -f /ramfs/out.wav ]]; then
	echo " => All done, cleaning ramfs"
	rm -rf /ramfs/out.wav
fi