From 0cc9b20c15460213e488bf5e70963b941482f628 Mon Sep 17 00:00:00 2001
From: William Harrington <kb0iic@berzerkula.org>
Date: Tue, 14 Jan 2025 16:06:02 -0600
Subject: Add source.

---
 sdk/dev/flowctrl.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 sdk/dev/flowctrl.c

(limited to 'sdk/dev/flowctrl.c')

diff --git a/sdk/dev/flowctrl.c b/sdk/dev/flowctrl.c
new file mode 100644
index 0000000..7977b1c
--- /dev/null
+++ b/sdk/dev/flowctrl.c
@@ -0,0 +1,47 @@
+/*
+ * Serial line flow control option settings.
+ * $Id$
+ * Copyright (c) 1997 by Tycho Softworks.
+ * For conditions of distribution and reuse see product license.
+ */
+
+#include <dev/tty.h>
+#ifndef	TERMIOS_H_MISSING
+#include <termios.h>
+#endif
+
+#ifndef	CRTSCTS
+#ifdef	CTSFLOW
+#define	CRTSCTS	CTSFLOW | CRTSFL
+#endif
+#endif
+
+int	setflowctrl(stty_t stty, FLOWCONTROL flow)
+{
+#ifndef	TERMIOS_H_MISSING
+
+	struct	termios *tios = stty;
+	tios->c_cflag &= ~CRTSCTS;
+	tios->c_iflag &= ~(IXON | IXOFF | IXANY);
+	
+	switch(flow)
+	{
+	case FC_HARD:
+		tios->c_cflag |= CRTSCTS;
+		break;
+	case FC_SOFT:
+		tios->c_iflag |= (IXON | IXOFF | IXANY);
+		break;
+	case FC_FULL:
+		tios->c_cflag |= CRTSCTS;
+		tios->c_iflag |= (IXON | IXOFF | IXANY);
+		break;
+	}
+#endif
+	return 0;
+}
+
+	
+	
+
+
-- 
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