--- /dev/null
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+/* sky_serial.c */
+
+extern int skytraq_open_time;
+extern int skytraq_verbose;
+
+int
+skytraq_open(const char *path);
+
+int
+skytraq_setspeed(int fd, int baud);
+
+int
+skytraq_setcomm(int fd, int baudrate);
+
+int
+skytraq_write(int fd, const char *data, int len);
+
+int
+skytraq_waitchar(int fd, int timeout);
+
+int
+skytraq_waitstatus(int fd, const char *status, int timeout);
+
+void
+skytraq_flush(int fd);
+
+int
+skytraq_cmd_wait(int fd, const char *message, int len, const char *status, int timeout);
+
+int
+skytraq_cmd_nowait(int fd, const char *message, int len);
+
+/* sky_debug.c */
+
+void
+skytraq_dbg_printf(int input, const char *fmt, ...);
+
+void
+skytraq_dbg_buf(int input, const char *buf, int len);
+
+void
+skytraq_dbg_char(int input, char c);
+
+/* sky_srec.c */
+int
+skytraq_send_srec(int fd, const char *file);
+
+/* sky_bin.c */
+int
+skytraq_send_bin(int fd, const char *filename);