added DCF77 function (experimental, not fully working yet)

src/hal/generic.h

@@ -55,6 +55,9 @@
 // Settings for IF482 interface
 #define HAS_IF482 9600, SERIAL_7E1, GPIO_NUM_12, GPIO_NUM_14 // IF482 serial port parameters
 
+// Settings for DCF77 interface
+#define HAS_DCF77 GPIO_NUM_13
+
 // Pins for LORA chip SPI interface, reset line and interrupt lines
 #define LORA_SCK  (5) 
 #define LORA_CS   (18)