Update update-components.sh

Author: Jason2866

Diff for: tools/update-components.sh

@@ -5,10 +5,18 @@ source ./tools/config.sh
 #
 # CLONE/UPDATE ARDUINO
 #
-ARDUINO_BRANCH="release/v1.0"
-ARDUINO_HAS_BRANCH=`git_branch_exists "$AR_COMPS/arduino" "idf-$IDF_BRANCH"`
-if [ "$ARDUINO_HAS_BRANCH" == "1" ]; then
-	ARDUINO_BRANCH="idf-$IDF_BRANCH"
+if [ -z $ARDUINO_BRANCH ]; then
+	has_ar_branch=`git_branch_exists "$AR_COMPS/arduino" "idf-$IDF_BRANCH"`
+	if [ "$has_ar_branch" == "1" ]; then
+		ARDUINO_BRANCH="idf-$IDF_BRANCH"
+	else
+		has_ar_branch=`git_branch_exists "$AR_COMPS/arduino" "$AR_PR_TARGET_BRANCH"`
+		if [ "$has_ar_branch" == "1" ]; then
+			ARDUINO_BRANCH="$AR_PR_TARGET_BRANCH"
+		else
+			ARDUINO_BRANCH="master"
+		fi
+	fi
 fi
 
 if [ ! -d "$AR_COMPS/arduino" ]; then