SD card reader native mode added

src/sdcard.cpp

@@ -14,12 +14,19 @@ static void createFile(void);
 File fileSDCard;
 
 bool sdcard_init() {
-  ESP_LOGD(TAG, "looking for SD-card...");
+  ESP_LOGI(TAG, "looking for SD-card...");
+#if HAS_SDCARD == 1
+  pinMode(SS, OUTPUT);
   useSDCard = SD.begin(SDCARD_CS, SDCARD_MOSI, SDCARD_MISO, SDCARD_SCLK);
-  if (useSDCard)
+#elif HAS_SDCARD == 2
+  useSDCard = SD_MMC.begin();
+#endif
+
+  if (useSDCard) {
+    ESP_LOGI(TAG, "SD-card found");
     createFile();
-  else
-    ESP_LOGD(TAG, "SD-card not found");
+  } else
+    ESP_LOGI(TAG, "SD-card not found");
   return useSDCard;
 }
 
@@ -64,10 +71,22 @@ void createFile(void) {
   for (int i = 0; i < 100; i++) {
     sprintf(bufferFilename, SDCARD_FILE_NAME, i);
     ESP_LOGD(TAG, "SD: looking for file <%s>", bufferFilename);
+
+#if HAS_SDCARD == 1
     bool fileExists = SD.exists(bufferFilename);
+#elif HAS_SDCARD == 2
+    bool fileExists = SD_MMC.exists(bufferFilename);
+#endif
+
     if (!fileExists) {
       ESP_LOGD(TAG, "SD: file does not exist: opening");
+
+#if HAS_SDCARD == 1
       fileSDCard = SD.open(bufferFilename, FILE_WRITE);
+#elif HAS_SDCARD == 2
+      fileSDCard = SD_MMC.open(bufferFilename, FILE_WRITE);
+#endif
+
       if (fileSDCard) {
         ESP_LOGD(TAG, "SD: name opened: <%s>", bufferFilename);
         fileSDCard.print(SDCARD_FILE_HEADER);