Added install/uninstall scripts

.gitignore

@@ -0,0 +1 @@
+*.dtbo

gpio-keys/Makefile

@@ -9,3 +9,6 @@ dt-load:
 
 install:
 	cp picade.dtbo /boot/overlays/
+
+clean:
+	rm -f picade.dtbo

gpio-keys/install.sh

@@ -0,0 +1,62 @@
+#!/bin/bash
+
+OVERLAY_PATH="/boot/overlays"
+OVERLAY_NAME="picade.dtbo"
+
+CONFIG="/boot/config.txt"
+CONFIG_BACKUP="$CONFIG.picade-preinstall"
+
+CONFIG_LINES=(
+	"dtoverlay=picade"
+)
+
+printf "Picade HAT: Installer\n\n"
+
+if [ $(id -u) -ne 0 ]; then
+	printf "Script must be run as root. Try 'sudo ./install.sh'\n"
+	exit 1
+fi
+
+if [ ! -f "$OVERLAY_NAME" ]; then
+	if [ ! -f "/usr/bin/dtc" ]; then
+		printf "This script requires device-tree-compiler, please \"sudo apt install device-tree-compiler\"\n";
+		exit 1
+	fi
+	make
+fi
+
+if [ ! -f "$CONFIG_BACKUP" ]; then
+	cp $CONFIG $CONFIG_BACKUP
+	printf "Notice: copying $CONFIG to $CONFIG_BACKUP\n"
+fi
+
+if [ -d "$OVERLAY_PATH" ]; then
+	cp $OVERLAY_NAME $OVERLAY_PATH/$OVERLAY_NAME
+	printf "Installed: $OVERLAY_PATH/$OVERLAY_NAME\n"
+else
+	printf "Warning: unable to copy $OVERLAY_NAME to $OVERLAY_PATH\n"
+fi
+
+if [ -f "$CONFIG" ]; then
+	for ((i = 0; i < ${#CONFIG_LINES[@]}; i++)); do
+		CONFIG_LINE="${CONFIG_LINES[$i]}"
+		grep -e "^#$CONFIG_LINE" $CONFIG > /dev/null
+		STATUS=$?
+		if [ $STATUS -eq 1 ]; then
+			grep -r "^$CONFIG_LINE" $CONFIG > /dev/null
+			STATUS=$?
+			if [ $STATUS -eq 1 ]; then
+				# Line is missing from config file
+				echo "$CONFIG_LINE" >> $CONFIG
+				printf "Config: Added \"$CONFIG_LINE\" to $CONFIG\n"
+			else
+				printf "Config: Skipped \"$CONFIG_LINE\", already exists in $CONFIG\n"
+			fi
+		else
+			sed $CONFIG -i -e "s/^#$CONFIG_LINE/$CONFIG_LINE/"
+			printf "Config: Uncommented \"$CONFIG_LINE\" in $CONFIG\n"
+		fi
+	done
+else
+	printf "Warning: unable to find $CONFIG, is /boot mounted?\n"
+fi

gpio-keys/uninstall.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+
+OVERLAY_PATH="/boot/overlays"
+OVERLAY_NAME="picade.dtbo"
+
+CONFIG="/boot/config.txt"
+CONFIG_BACKUP="$CONFIG.picade-preuninstall"
+
+CONFIG_LINES=(
+	"dtoverlay=picade"
+)
+
+printf "Picade HAT: Uninstaller\n\n"
+
+if [ $(id -u) -ne 0 ]; then
+	printf "Script must be run as root. Try 'sudo ./install.sh'\n"
+	exit 1
+fi
+
+if [ ! -f "$CONFIG_BACKUP" ]; then
+	cp $CONFIG $CONFIG_BACKUP
+	printf "Notice: copying $CONFIG to $CONFIG_BACKUP\n"
+fi
+
+if [ -f "$OVERLAY_PATH/$OVERLAY_NAME" ]; then
+	rm -f $OVERLAY_PATH/$OVERLAY_NAME
+	printf "Removing $OVERLAY_PATH/$OVERLAY_NAME\n"
+fi
+
+if [ -f "$CONFIG" ]; then
+	for ((i = 0; i < ${#CONFIG_LINES[@]}; i++)); do
+		CONFIG_LINE="${CONFIG_LINES[$i]}"
+		grep -e "^$CONFIG_LINE" $CONFIG > /dev/null
+		STATUS=$?
+		if [ $STATUS -eq 0 ]; then
+			sed -i "/^$CONFIG_LINE/d" $CONFIG
+			printf "Config: removed \"$CONFIG_LINE\", from $CONFIG\n"
+		else
+			printf "Config: skipped \"$CONFIG_LINE\", not found in $CONFIG\n"
+		fi
+	done
+else
+	printf "Warning: unable to find $CONFIG, is /boot mounted?\n"
+fi