Diff: timer0.cpp

Revision:

0:bbd867fd30d1

Child:

1:45063f72267b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/timer0.cpp	Sat Jul 26 07:27:37 2014 +0000
@@ -0,0 +1,87 @@
+
+#include "timer0.h"
+
+//--------------------------------------------------------
+// Construktor initialisiert den Timer
+timer0::timer0()
+{
+    uint8_t i;
+    
+    // Initialize countdown timers
+    for (i=0; i < TIMER0_NUM_COUNTDOWNTIMERS; i++)
+      CountDownTimers[i].status = 0xFF;
+  
+    ticker.attach_us(this, &timer0::func, 1000);
+}
+
+//--------------------------------------------------------
+// Interruptroutine wird jede ms aufgerufen
+void timer0::func(void)
+{
+    uint8_t i;
+    
+    if(counter != 0) counter--;
+
+    // ----- count down timers in ms -------------------------------------------------
+    for (i=0; i<TIMER0_NUM_COUNTDOWNTIMERS; i++) 
+    {
+        if (CountDownTimers[i].status == 1) 
+        {       // 10 ms
+            if (CountDownTimers[i].count_timer > 0)
+                CountDownTimers[i].count_timer -- ;
+            if (CountDownTimers[i].count_timer == 0)
+                CountDownTimers[i].status = 0;
+        }
+    }
+
+}
+
+//--------------------------------------------------------
+// Abfrage nach freiem Timer
+//
+// wenn alle Timer belegt sind wird 0xFF zurückgegebne
+
+uint8_t timer0::AllocateCountdownTimer (void)
+{
+    uint8_t i;
+    
+    for (i=0; i<TIMER0_NUM_COUNTDOWNTIMERS; i++)
+        if (CountDownTimers[i].status == 0xFF)
+        {
+            CountDownTimers[i].status = 0x00;   // Timer reserviert, nicht gestartet
+            // printf_P(PSTR("\rallocate timer [%03d] %d\n"),i,ListPointer);            
+            
+            return i;
+        }
+
+    return 0xFF;
+}
+
+//--------------------------------------------------------
+// Timer wieder freigeben
+void timer0::RemoveCountdownTimer(uint8_t timer)
+{
+    CountDownTimers[timer].status = 0xFF;
+}
+
+//--------------------------------------------------------
+// Abfrage ob Timer 0 erreicht hat                  
+uint8_t timer0::GetTimerStatus(uint8_t timer)
+{
+    return CountDownTimers[timer].status;
+}
+
+//--------------------------------------------------------
+// Abfrage der verbleibenden Zeit               
+uint16_t timer0::GetTimerZeit(uint8_t timer)
+{
+    return CountDownTimers[timer].count_timer;
+}
+
+//--------------------------------------------------------
+// Timer aktivieren
+void timer0::SetCountdownTimer(uint8_t timer, uint8_t status, uint16_t value)
+{
+    CountDownTimers[timer].count_timer = value;
+    CountDownTimers[timer].status = status;
+}