Added function def for serial0_read()

avr_usart.c

@@ -135,11 +135,15 @@ unsigned char rx_usart0(void) {
 
 
 /*
- * Inupt: None
+ * Inupt: A serialbuffer and length
  * Output: None
- * Description:
+ * Description: Reads the serial data into a buffer of x length.
  */
-
+void serial0_read(char* buffer, uint8_t buf_length) {
+    for(uint8_t i = 0; i < buf_length; i++) {
+        buffer[i] = rx_usart0();
+    }
+}