Initial commit, migrated repo

modulations/ssb.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+
+# Pin logic
+#selecting pin
+
+GPIO=26
+
+# "Prepare" it, whatever that means, I just copied it from SO
+if [ ! -d /sys/class/gpio/gpio${GPIO} ]; then
+  echo "${GPIO}" > /sys/class/gpio/export
+fi
+echo "in" > /sys/class/gpio/gpio"${GPIO}"/direction
+
+
+
+# old line
+#(while true; do cat sampleaudio.wav; done)
+
+while true; do
+  	if [ 1 == "$(</sys/class/gpio/gpio"${GPIO}"/value)" ]; then
+
+		# REMOVE THIS
+		echo "Not pressed"
+
+  	else
+
+# do arecord -l or arecord -L to find your audio card and change hw:0,7 to the corresponding value
+		arecord -q -f cd -r 44100 -c2 -D hw:0,7 -t raw | csdr convert_i16_f \ | csdr fir_interpolate_cc 2 | csdr dsb_fc \ | csdr bandpass_fir_fft_cc 0.002 0.06 0.01 | csdr fastagc_ff \  | sudo ./sendiq -i /dev/stdin -s 96000 -f "$1" -t float
+# maybe i just need to extract this command and put it in a subprocess... 🤔
+
+	fi
+	sleep .5
+done
+
+# this should work
+# screen will probably be operated using python, so all we need to do there is to killall ssb.sh, then run a new one with new freq async subproc
+# usage: bash ssb.sh "freq"