diff --git a/include/tabby/serial.h b/include/tabby/serial.h
new file mode 100644
index 0000000..ffa07d4
--- /dev/null
+++ b/include/tabby/serial.h
@@ -0,0 +1,16 @@
+#ifndef _TABBY_SERIAL_H
+#define _TABBY_SERIAL_H
+
+#include <sys/types.h>
+
+#define TABBY_SERIAL_BAUD 115200
+
+int tabby_serial_open(const char *dev);
+
+void tabby_serial_close(int fd);
+
+int tabby_serial_send(int fd, char *buf, size_t len);
+
+ssize_t tabby_serial_recv(int fd, char *buf, size_t len);
+
+#endif /* _TABBY_SERIAL_H */