modified while adding pic18 support

bacnet-stack/ports/pic18/timer.c

@@ -0,0 +1,45 @@
+/**************************************************************************
+*
+* Copyright (C) 2005 Steve Karg
+*
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to deal in the Software without restriction, including
+* without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to
+* permit persons to whom the Software is furnished to do so, subject to
+* the following conditions:
+*
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*
+*
+*********************************************************************/
+#include <stdint.h>
+
+volatile uint8_t Milliseconds; // used for timing stuff - counts up to 0xFF.
+
+/****************************************************************************
+* DESCRIPTION: Timer is set to go off every 1ms.  We increment the counter, 
+*              and the main task will decrement the counter.
+* PARAMETERS:  none
+* RETURN:      none
+* ALGORITHM:   none
+* NOTES:       none
+*****************************************************************************/
+void Timer_Millisecond_Interrupt(void)
+{
+  // Global Milisecond timer
+  if (Milliseconds < 0xFF)
+    Milliseconds++;
+
+  return;
+}