diff --git a/prosjekt.X/uart.h b/prosjekt.X/uart.h
index 6259eee..7284552 100644
--- a/prosjekt.X/uart.h
+++ b/prosjekt.X/uart.h
@@ -20,9 +20,14 @@ extern "C" {
 #endif
     
 #define USART3_BAUD_RATE(BAUD_RATE) ((float)(F_CPU * 64 / (16 * (float)BAUD_RATE)) + 0.5)
-    
+
+// Initialize the USART3 controller
 void init_uart(uint16_t baud);
+
+// Send a single character over UART
 void USART3_sendChar(char c);
+
+// Send a string of characters over UART
 int USART3_printChar(char c, FILE *stream);
 
 static FILE USART_stream = FDEV_SETUP_STREAM(USART3_printChar, NULL, _FDEV_SETUP_WRITE);