Hello,
The attached patch adds a pair of small functions to access signals
information for the serial port.
Carlos.
Index: serial.c
===================================================================
--- serial.c (revisión: 57943)
+++ serial.c (copia de trabajo)
@@ -10,6 +10,7 @@
#include <fcntl.h>
#include <string.h>
#include <sys/poll.h>
+#include <sys/ioctl.h>
#include <glib.h>
@@ -202,6 +203,62 @@
return TRUE;
}
+static gint32
+get_signal_code (MonoSerialSignal signal)
+{
+ switch (signal) {
+ case Cd:
+ return TIOCM_CAR;
+ case Cts:
+ return TIOCM_CTS;
+ case Dsr:
+ return TIOCM_DSR;
+ case Dtr:
+ return TIOCM_DTR;
+ case Rts:
+ return TIOCM_RTS;
+ }
+
+ /* Not reached */
+ return 0;
+}
+
+gint32
+get_signal (int fd, MonoSerialSignal signal)
+{
+ int signals, expected;
+
+ expected = get_signal_code (signal);
+ if (ioctl (fd, TIOCMGET, &signals) == -1)
+ return -1;
+
+ return (expected & signals) != 0;
+}
+
+gint32
+set_signal (int fd, MonoSerialSignal signal, gboolean value)
+{
+ int signals, expected, activated;
+
+ expected = get_signal_code (signal);
+ if (ioctl (fd, TIOCMGET, &signals) == -1)
+ return -1;
+
+ activated = (signals & expected) != 0;
+ if (activated == value) /* Already set */
+ return 1;
+
+ if (value)
+ signals |= expected;
+ else
+ signals &= ~expected;
+
+ if (ioctl (fd, TIOCMSET, &signals) == -1)
+ return -1;
+
+ return 1;
+}
+
/*
* mono internals should not be used here.
* this serial stuff needs to be implemented with icalls.
Index: serial.h
===================================================================
--- serial.h (revisión: 57943)
+++ serial.h (copia de trabajo)
@@ -27,5 +27,14 @@
OnePointFive = 3
} MonoStopBits;
+/* This is a copy of System.IO.Ports.SerialSignal */
+typedef enum {
+ Cd = 0, /* Carrier detect */
+ Cts = 1, /* Clear to send */
+ Dsr = 2, /* Data set ready */
+ Dtr = 3, /* Data terminal ready */
+ Rts = 4 /* Request to send */
+} MonoSerialSignal;
+
#endif
Index: ChangeLog
===================================================================
--- ChangeLog (revisión: 57943)
+++ ChangeLog (copia de trabajo)
@@ -1,3 +1,7 @@
+2006-03-14 Carlos Alberto Cortez <[EMAIL PROTECTED]>
+
+ * serial.c: Add functions to handle signals access.
+
2006-03-09 Carlos Alberto Cortez <[EMAIL PROTECTED]>
* serial.c: Fix a pair of wrong or incomplete assignations
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