Jason Garner / registers-example

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Dependencies:   ARM registers

Diff: Timer.cpp

Revision:
3:88da6c0412b0
Parent:
2:e26c096f1946
diff -r e26c096f1946 -r 88da6c0412b0 Timer.cpp
--- a/Timer.cpp	Sun Dec 30 04:58:42 2012 +0000
+++ b/Timer.cpp	Thu Jan 03 02:57:29 2013 +0000
@@ -3,9 +3,9 @@
 
 // static data initialization  (only called once)
 bool Timer::timer1initialized = false; 
-int Timer::resolution = 1000000;
+int Timer::resolution = 1000000; //default: microseconds accuracy
 
-void Timer::initTimer1(int res) //microseconds accuracy
+void Timer::initTimer1(int res) 
 {
     uint8_t pclk;
     uint32_t pclkdiv = (LPC_SC->PCLKSEL0 >> 4) & 0x03; //PCLK for Timer 1 (page 56)
@@ -27,14 +27,14 @@
             break;
     }
 
-    LPC_TIM1->TCR = 0x02;           /* reset timer */
+    LPC_TIM1->TCR = 0x02;           // reset timer
     LPC_TIM1->PR  = (SystemCoreClock / (pclk * res)); //default: microsecond steps
-    LPC_TIM1->MR0 = 2147483647;             /* highest number a 32bit signed int can store (for us ~ 35.79 minutes, or, for ms ~ 596.52 hours ) */
-    LPC_TIM1->IR  = 0xff;           /* reset all interrrupts */
-    LPC_TIM1->MCR = 0x02;           /* reset timer on match */
-    LPC_TIM1->TCR = 0x01;           /* start timer */
+    LPC_TIM1->MR0 = 2147483647;             // highest number a 32bit signed int can store (for us ~ 35.79 minutes, or, for ms ~ 596.52 hours )
+    LPC_TIM1->IR  = 0xff;           // reset all interrrupts
+    LPC_TIM1->MCR = 0x02;           // reset timer on match
+    LPC_TIM1->TCR = 0x01;           // start timer
 
-    /* The timer simply goes on forever! It just resets itself when it hits the max number for TC */
+    // The timer simply goes on forever! It just resets itself when it hits the max number for TC
     timer1initialized = true;
     resolution = res;
 }