From 092cb60702ac8e01ff001c33ff02cb82125ad5ca Mon Sep 17 00:00:00 2001
From: Daniel Markstedt <markstedt@gmail.com>
Date: Sat, 6 Nov 2021 17:23:53 -0700
Subject: [PATCH] Handle the screen rotation parameter better, fixing an error
 when no parameter was specified (#418)

---
 src/oled_monitor/rascsi_oled_monitor.py | 2 ++
 src/oled_monitor/start.sh               | 9 +++++++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/oled_monitor/rascsi_oled_monitor.py b/src/oled_monitor/rascsi_oled_monitor.py
index 3d9512b9..7f329b78 100755
--- a/src/oled_monitor/rascsi_oled_monitor.py
+++ b/src/oled_monitor/rascsi_oled_monitor.py
@@ -65,8 +65,10 @@ print("Will update the OLED display every " + str(DELAY_TIME_MS) + "ms (approxim
 if len(argv) > 1:
     if str(argv[1]) == "0":
         ROTATION = 0
+        print("Using 0 degrees screen rotation.")
     elif str(argv[1]) == "180":
         ROTATION = 2
+        print("Using 180 degrees screen rotation.")
     else:
         exit("Only 0 and 180 are valid arguments for screen rotation.")
 else:
diff --git a/src/oled_monitor/start.sh b/src/oled_monitor/start.sh
index e48b63df..acc46b67 100755
--- a/src/oled_monitor/start.sh
+++ b/src/oled_monitor/start.sh
@@ -105,5 +105,10 @@ while [ "$1" != "" ]; do
     shift
 done
 
-echo "Starting OLED Screen with $ROTATION degrees rotation..."
-python3 rascsi_oled_monitor.py "${ROTATION}"
+echo "Starting OLED Screen..."
+if [ -z ${ROTATION+x} ]; then
+    echo "No screen rotation parameter given; falling back to the default."
+else
+    echo "Screen rotation set to $ROTATION degrees."
+fi
+python3 rascsi_oled_monitor.py ${ROTATION}