Diff: timer/timer.c

Revision:

40:53666b1a5848

Parent:

39:5b594b1b6a0a

Child:

41:8cd859cd1475

--- a/timer/timer.c	Mon Dec 03 12:50:10 2018 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,61 +0,0 @@
-#include <stdint.h>
-#include <stdbool.h>
-
-#include   "timer.h"
-
-#define TCR  (*((volatile unsigned *) 0x40004004))
-#define TC   (*((volatile unsigned *) 0x40004008))
-#define PR   (*((volatile unsigned *) 0x4000400C))
-#define MCR  (*((volatile unsigned *) 0x40004014))
-#define CTCR (*((volatile unsigned *) 0x40004070))
-
-uint32_t TimerCount()
-{
-    return TC;
-}
-uint32_t TimerSinceRepetitive(uint32_t* pLastCount)
-{
-    uint32_t thisCount = TC;
-    uint32_t period = thisCount - *pLastCount;    
-    *pLastCount = thisCount;
-    return period;
-}
-uint32_t TimerSinceCount(uint32_t lastCount)
-{
-    return TC - lastCount; 
-}
-uint32_t TimerSinceMs(uint32_t lastCount)
-{
-    uint32_t count = TC - lastCount;
-    return count / TIMER_COUNT_PER_MS;
-}
-
-bool TimerRepetitiveTick(uint32_t* pLastCount, uint32_t interval)
-{
-    if (TC - *pLastCount >= interval) //All unsigned wrap around arithmetic
-    {
-        *pLastCount += interval;
-        return true;
-    }
-    return false;
-}
-
-int32_t TimerMultiplyFractionalPart(int32_t value, uint32_t countSinceLast, uint32_t interval)
-{
-    int64_t fraction;
-    
-    fraction = countSinceLast;
-    fraction <<= 32;
-    fraction /= interval;
-              
-    return (value * fraction) >> 32;
-}
-
-void TimerInit()
-{    
-    TCR     =     2; // 21.6.2 Timer Control Register - Reset TC and PC.
-    CTCR    =     0; // 21.6.3 Count Control Register - Timer mode
-    PR      =     0; // 21.6.5 Prescale register      - Don't prescale 96MHz clock (divide by PR+1).
-    MCR     =     0; // 21.6.8 Match Control Register - no interrupt or reset
-    TCR     =     1; // 21.6.2 Timer Control Register - Enable TC and PC
-}