SSD1306 prefs start-up optimisation

Avoid [ 137][E][Preferences.cpp:483] getString(): nvs_get_str len fail: SSD1306Config NOT_FOUND error during start-up when no save preferences have been found
1technophile · Mar 27, 2023 · 2702c8f · 2702c8f
1 parent 0ece563
commit 2702c8f
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/main/ZdisplaySSD1306.ino b/main/ZdisplaySSD1306.ino
@@ -238,8 +238,8 @@ void SSD1306Config_init() {
 bool SSD1306Config_load() {
   StaticJsonDocument<JSON_MSG_BUFFER> jsonBuffer;
   preferences.begin(Gateway_Short_Name, true);
-  String exists = preferences.getString("SSD1306Config", "{}");
-  if (exists != "{}") {
+  bool exists = preferences.isKey("SSD1306Config");
+  if (exists) {
     auto error = deserializeJson(jsonBuffer, preferences.getString("SSD1306Config", "{}"));
     preferences.end();
     if (error) {