From 624b5fe9a6778a6f86edd4a16ffb84f4474ac15a Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Tue, 6 Jul 2021 15:01:35 -0400
Subject: [PATCH] grep for Loopback number fora play

---
 groundstation/sstv_decode_sim.sh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/groundstation/sstv_decode_sim.sh b/groundstation/sstv_decode_sim.sh
index fc07a33f..300895ee 100755
--- a/groundstation/sstv_decode_sim.sh
+++ b/groundstation/sstv_decode_sim.sh
@@ -37,6 +37,10 @@ sleep 5
 
 #sudo systemctl restart cubesatsim
 
-rtl_fm -M fm -f 434.9M -s 48k | aplay -D hw:2,0,0 -r 48000 -t raw -f S16_LE -c 1 
+value=`aplay -l | grep "Loopback"`
+echo "$value" > /dev/null
+set -- $value
+
+rtl_fm -M fm -f 434.9M -s 48k | aplay -D hw:${2:0:1},0,0 -r 48000 -t raw -f S16_LE -c 1 
 
 $SHELL