FreeModBus is now integrated with the Nuttx configuration system

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4961 7fd9a85b-ad96-42d3-883c-3090e2eb8679
2026-11-03 00:31:36 +08:00 · 2012-07-21 14:56:21 +00:00
parent 3eafac29cd
commit 4c2b6c49c9
24 changed files with 978 additions and 220 deletions
@@ -0,0 +1,72 @@
+/*
+ * FreeModbus Libary: Linux Port
+ * Copyright (C) 2006 Christian Walter <wolti@sil.at>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * File: $Id: portevent.c,v 1.1 2006/08/01 20:58:49 wolti Exp $
+ */
+
+/* ----------------------- Modbus includes ----------------------------------*/
+#include "mb.h"
+#include "mbport.h"
+
+/* ----------------------- Variables ----------------------------------------*/
+static eMBEventType eQueuedEvent;
+static BOOL     xEventInQueue;
+
+/* ----------------------- Start implementation -----------------------------*/
+BOOL
+xMBPortEventInit( void )
+{
+    xEventInQueue = FALSE;
+    return TRUE;
+}
+
+BOOL
+xMBPortEventPost( eMBEventType eEvent )
+{
+    xEventInQueue = TRUE;
+    eQueuedEvent = eEvent;
+    return TRUE;
+}
+
+BOOL
+xMBPortEventGet( eMBEventType * eEvent )
+{
+    BOOL            xEventHappened = FALSE;
+
+    if( xEventInQueue )
+    {
+        *eEvent = eQueuedEvent;
+        xEventInQueue = FALSE;
+        xEventHappened = TRUE;
+    }
+    else
+    {
+        /* Poll the serial device. The serial device timeouts if no
+         * characters have been received within for t3.5 during an
+         * active transmission or if nothing happens within a specified
+         * amount of time. Both timeouts are configured from the timer
+         * init functions.
+         */
+        ( void )xMBPortSerialPoll(  );
+
+        /* Check if any of the timers have expired. */
+        vMBPortTimerPoll(  );
+
+    }
+    return xEventHappened;
+}