Revision 0:02022f4feae7, committed 2012-06-22

Comitter:

PA

Date:

Fri Jun 22 02:56:17 2012 +0000

Commit message:

Changed in this revision

diff -r 000000000000 -r 02022f4feae7 GetTickCount.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/GetTickCount.cpp	Fri Jun 22 02:56:17 2012 +0000
@@ -0,0 +1,5 @@
+volatile unsigned int TickCount;
+
+extern "C" void SysTick_Handler (void) {
+    TickCount+= 10;
+}
\ No newline at end of file

diff -r 000000000000 -r 02022f4feae7 GetTickCount.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/GetTickCount.h	Fri Jun 22 02:56:17 2012 +0000
@@ -0,0 +1,31 @@
+/* mbed GetTickCount Library
+  * Copyright (c) 2010 Michael Wei
+  */ 
+  
+//shouldn't have to include, but fixes weird problems with defines
+#include "LPC1768/LPC17xx.h"
+
+#ifndef MBED_TICKCOUNT_H 
+#define MBED_TICKCOUNT_H 
+extern volatile unsigned int TickCount;
+
+inline void GetTickCount_Start(void) {
+    //CMSIS SYSTICK Config
+    SysTick_Config(SystemCoreClock / 100);               /* Generate interrupt every 10 ms */
+}
+
+inline void GetTickCount_Stop(void) {
+    SysTick->CTRL = (1 << SYSTICK_CLKSOURCE) | (0<<SYSTICK_ENABLE) | (0<<SYSTICK_TICKINT);    /* Disable SysTick IRQ and SysTick Timer */
+}
+
+inline void GetTickCount_Reset(void) {
+     SysTick->CTRL = (1 << SYSTICK_CLKSOURCE) | (0<<SYSTICK_ENABLE) | (0<<SYSTICK_TICKINT);    /* Disable SysTick IRQ and SysTick Timer */
+     TickCount = 0;
+     SysTick->CTRL = (1 << SYSTICK_CLKSOURCE) | (1<<SYSTICK_ENABLE) | (1<<SYSTICK_TICKINT);    /* Enable SysTick IRQ and SysTick Timer */
+}
+
+inline unsigned int GetTickCount(void)
+{
+    return TickCount;
+}
+#endif
\ No newline at end of file