1 files changed, 53 insertions, 0 deletions
diff --git a/ttyutils.h b/ttyutils.h
new file mode 100644
index 0000000..c1376f7
--- /dev/null
+++ b/ttyutils.h
@@ -0,0 +1,53 @@
+/*
+ * Generic serial port handling functions.
+ */
+ 
+#ifndef _TTYUTILS_H
+#define	_TTYUTILS_H
+
+#ifndef	TRUE
+#define	TRUE	1
+#endif
+
+#ifndef	FALSE
+#define	FALSE	0
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Put a given file descriptor into raw mode, if the hwflag is set to TRUE
+ * then hardware handshaking is enabled. Returns TRUE if successful.
+ */
+extern int tty_raw(int fd, int hwflag);
+
+/*
+ * Set the speed of the given file descriptor. Returns TRUE is it was
+ * successful.
+ */
+extern int tty_speed(int fd, int speed);
+
+/*
+ * Determines whether a given tty is already open by another process. Returns
+ * TRUE if is already locked, or FALSE if it is free.
+ */
+extern int tty_is_locked(char *tty);
+
+/*
+ * Creates a lock file for the given tty. It writes the process ID to the
+ * file so take care if doing a fork. Returns TRUE if everything was OK.
+ */
+extern int tty_lock(char *tty);
+
+/*
+ * Removes the lock file for a given tty. Returns TRUE if successful.
+ */
+extern int tty_unlock(char *tty);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif