sdcard fix

README.md

@@ -207,9 +207,9 @@ There in the sensor configuration select "TheThingsNetwork" and set Decoding Pro
 # SD-card
 Data can be stored on an SD-card if one is availabe. Simply choose the file in src/hal and add the following lines to your hal-file:
 
-    #define HAS_SDCARD 1     // this board has an SD-card-reader/writer, with SPI interface
+    #define HAS_SDCARD 1     // SD-card-reader/writer, using SPI interface
 	OR
-	#define HAS_SDCARD 2     // this board has an SD-card-reader/writer, using native SD interface
+	#define HAS_SDCARD 2     // SD-card-reader/writer, using SDMMC interface
 
     // Pins for SD-card
     #define SDCARD_CS   (13) // fill in the correct numbers for your board

src/sdcard.cpp

@@ -16,7 +16,7 @@ File fileSDCard;
 bool sdcard_init() {
   ESP_LOGI(TAG, "looking for SD-card...");
 #if HAS_SDCARD == 1
-  pinMode(SS, OUTPUT);
+  pinMode(SDCARD_CS, OUTPUT);
   useSDCard = SD.begin(SDCARD_CS, SDCARD_MOSI, SDCARD_MISO, SDCARD_SCLK);
 #elif HAS_SDCARD == 2
   useSDCard = SD_MMC.begin();