Multi-update

- 0.15.0-b2
- WS2805 support (NeoPixelBus 2.7.9)
- generic PSRAM support (ESP32 rev.1 still needs compile fix)
- BREAKING: default LEDPIN 2 (due to PSRAM)
- PinManager optimisations

wled00/file.cpp

@@ -376,20 +376,15 @@ void updateFSInfo() {
 }
 
 
-#if defined(BOARD_HAS_PSRAM) && defined(WLED_USE_PSRAM)
+#ifdef ARDUINO_ARCH_ESP32
 // caching presets in PSRAM may prevent occasional flashes seen when HomeAssitant polls WLED
 // original idea by @akaricchi (https://github.com/Akaricchi)
-// returns a pointer to the PSRAM buffer updates size parameter
+// returns a pointer to the PSRAM buffer, updates size parameter
 static const uint8_t *getPresetCache(size_t &size) {
   static unsigned long presetsCachedTime;
   static uint8_t *presetsCached;
   static size_t presetsCachedSize;
 
-  if (!psramFound()) {
-    size = 0;
-    return nullptr;
-  }
-
   if (presetsModifiedTime != presetsCachedTime) {
     if (presetsCached) {
       free(presetsCached);
@@ -421,8 +416,8 @@ bool handleFileRead(AsyncWebServerRequest* request, String path){
   DEBUG_PRINT(F("WS FileRead: ")); DEBUG_PRINTLN(path);
   if(path.endsWith("/")) path += "index.htm";
   if(path.indexOf(F("sec")) > -1) return false;
-  #if defined(BOARD_HAS_PSRAM) && defined(WLED_USE_PSRAM)
-  if (path.endsWith(FPSTR(getPresetsFileName()))) {
+  #ifdef ARDUINO_ARCH_ESP32
+  if (psramFound() && path.endsWith(FPSTR(getPresetsFileName()))) {
     size_t psize;
     const uint8_t *presets = getPresetCache(psize);
     if (presets) {