Diff: ew_systick.c

Revision:

0:12b53511e212

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ew_systick.c	Fri Jan 29 21:46:31 2010 +0000
@@ -0,0 +1,61 @@
+//*****************************************************************************
+//   +--+       
+//   | ++----+   
+//   +-++    |  
+//     |     |  
+//   +-+--+  |   
+//   | +--+--+  
+//   +----+    Copyright (c) 2009 Code Red Technologies Ltd. 
+//
+// ew_systick.c provided SysTick functions for use by EasyWeb port to RDB1768
+//
+// Software License Agreement
+// 
+// The software is owned by Code Red Technologies and/or its suppliers, and is 
+// protected under applicable copyright laws.  All rights are reserved.  Any 
+// use in violation of the foregoing restrictions may subject the user to criminal 
+// sanctions under applicable laws, as well as to civil liability for the breach 
+// of the terms and conditions of this license.
+// 
+// THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
+// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
+// USE OF THIS SOFTWARE FOR COMMERCIAL DEVELOPMENT AND/OR EDUCATION IS SUBJECT
+// TO A CURRENT END USER LICENSE AGREEMENT (COMMERCIAL OR EDUCATIONAL) WITH
+// CODE RED TECHNOLOGIES LTD. 
+
+#include <mbed.h>
+
+extern void TCPClockHandler(void);
+
+volatile uint32_t TimeTick = 0;
+volatile uint32_t TimeTick2 = 0;
+
+
+// ****************
+//  SysTick_Handler
+void SysTick_Handler(void)
+{
+    TimeTick++;        // Increment first SysTick counter
+    TimeTick2++;    // Increment second SysTick counter
+    
+    // After 100 ticks (100 x 10ms = 1sec)
+    if (TimeTick >= 100) {
+      TimeTick = 0;    // Reset counter
+      LPC_GPIO1->FIOPIN ^= 1 << 25;    // Toggle user LED
+    }
+    // After 20 ticks (20 x 10ms = 1/5sec)
+    if (TimeTick2 >= 20) {
+      TimeTick2 = 0; // Reset counter
+      TCPClockHandler();  // Call TCP handler
+    }  
+}
+
+// ****************
+// Setup SysTick Timer to interrupt at 10 msec intervals
+void Start_SysTick10ms(void)
+{
+    if (SysTick_Config(SystemCoreClock / 100)) { 
+        while (1);  // Capture error
+    }
+}