--- /dev/null
+/*
+ * fw/uart.h - Functions needed for debugging over uart
+ *
+ * Code adapted from http://www.roboternetz.de/wissen/index.php/UART_mit_avr-gcc
+ * and http://www.mikrocontroller.net/articles/AVR-GCC-Tutorial
+ *
+ * Published under the Creative Commons Share-Alike licence
+ * https://creativecommons.org/licenses/by-sa/2.0/de/
+ *
+ * S. Salewski 2007
+ *
+ * Adapted by
+ * Josef Filzmaier 2017
+ */
+
+#ifndef UART_H_
+#define UART_H_
+
+#include <stdio.h>
+
+void uart_init(void);
+int uart_write_char(char c, FILE* stream);
+void uart_new_line(void);
+
+#endif /* UART_H_ */