First version under SVN is V4.0.1

Demo/Common/Full/print.c

@@ -0,0 +1,111 @@
+/*
+	FreeRTOS V4.0.1 - Copyright (C) 2003-2006 Richard Barry.
+
+	This file is part of the FreeRTOS distribution.
+
+	FreeRTOS 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; either version 2 of the License, or
+	(at your option) any later version.
+
+	FreeRTOS 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 FreeRTOS; if not, write to the Free Software
+	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+	A special exception to the GPL can be applied should you wish to distribute
+	a combined work that includes FreeRTOS, without being obliged to provide
+	the source code for any proprietary components.  See the licensing section 
+	of http://www.FreeRTOS.org for full details of how and when the exception
+	can be applied.
+
+	***************************************************************************
+	See http://www.FreeRTOS.org for documentation, latest information, license 
+	and contact details.  Please ensure to read the configuration and relevant 
+	port sections of the online documentation.
+	***************************************************************************
+*/
+
+/**
+ * Manages a queue of strings that are waiting to be displayed.  This is used to 
+ * ensure mutual exclusion of console output.
+ *
+ * A task wishing to display a message will call vPrintDisplayMessage (), with a 
+ * pointer to the string as the parameter. The pointer is posted onto the 
+ * xPrintQueue queue.
+ *
+ * The task spawned in main. c blocks on xPrintQueue.  When a message becomes 
+ * available it calls pcPrintGetNextMessage () to obtain a pointer to the next 
+ * string, then uses the functions defined in the portable layer FileIO. c to 
+ * display the message.
+ *
+ * <b>NOTE:</b>
+ * Using console IO can disrupt real time performance - depending on the port.  
+ * Standard C IO routines are not designed for real time applications.  While 
+ * standard IO is useful for demonstration and debugging an alternative method 
+ * should be used if you actually require console IO as part of your application.
+ *
+ * \page PrintC print.c
+ * \ingroup DemoFiles
+ * <HR>
+ */
+
+/*
+Changes from V2.0.0
+
+	+ Delay periods are now specified using variables and constants of
+	  portTickType rather than unsigned portLONG.
+*/
+
+#include <stdlib.h>
+
+/* Scheduler include files. */
+#include "FreeRTOS.h"
+#include "queue.h"
+
+/* Demo program include files. */
+#include "print.h"
+
+static xQueueHandle xPrintQueue;
+
+/*-----------------------------------------------------------*/
+
+void vPrintInitialise( void )
+{
+const unsigned portBASE_TYPE uxQueueSize = 20;
+
+	/* Create the queue on which errors will be reported. */
+	xPrintQueue = xQueueCreate( uxQueueSize, ( unsigned portBASE_TYPE ) sizeof( portCHAR * ) );
+}
+/*-----------------------------------------------------------*/
+
+void vPrintDisplayMessage( const portCHAR * const * ppcMessageToSend )
+{
+	#ifdef USE_STDIO
+		xQueueSend( xPrintQueue, ( void * ) ppcMessageToSend, ( portTickType ) 0 );
+	#else
+    	/* Stop warnings. */
+		( void ) ppcMessageToSend;
+	#endif
+}
+/*-----------------------------------------------------------*/
+
+const portCHAR *pcPrintGetNextMessage( portTickType xPrintRate )
+{
+portCHAR *pcMessage;
+
+	if( xQueueReceive( xPrintQueue, &pcMessage, xPrintRate ) == pdPASS )
+	{
+		return pcMessage;
+	}
+	else
+	{
+		return NULL;
+	}
+}
+
+