wled · Will-wastelander · Jun 14, 2026 · Jun 15, 2026 · Jun 15, 2026 · Jun 15, 2026
diff --git a/usermods/sd_card/sd_card.cpp b/usermods/sd_card/sd_card.cpp
@@ -14,8 +14,16 @@
 #endif
 
 #ifdef WLED_USE_SD_MMC
+  // SD_MMC configuration handled elsewhere
 #elif defined(WLED_USE_SD_SPI)
-  SPIClass spiPort = SPIClass(VSPI);
+  #if defined(CONFIG_IDF_TARGET_ESP32S3)
+    // ESP32-S3 default hardware SPI bus is typically FSPI (or HSPI)
+    SPIClass spiPort = SPIClass(HSPI); 
+  #else
+    // Classic ESP32 defaults (VSPI is default/safest for SD cards on standard pins)
+    SPIClass spiPort = SPIClass(VSPI);
+    // Alternative for classic ESP32 if needed: SPIClass spiPort = SPIClass(HSPI);
+  #endif
 #endif
 
 void listDir( const char * dirname, uint8_t levels);
@@ -241,4 +249,4 @@ void listDir( const char * dirname, uint8_t levels){
 #endif
 
 static UsermodSdCard sd_card;
-REGISTER_USERMOD(sd_card);
+REGISTER_USERMOD(sd_card);