skytraq_setcomm(int fd, int baudrate);
int
-skytraq_write(int fd, const char *data, int len);
+skytraq_write(int fd, const void *data, int len);
int
skytraq_waitchar(int fd, int timeout);
void
skytraq_flush(int fd);
+int
+skytraq_millis(void);
+
+void
+skytraq_dbg_newline(void);
+
int
skytraq_cmd_wait(int fd, const char *message, int len, const char *status, int timeout);