50 lines
1.5 KiB
C++
Executable File
50 lines
1.5 KiB
C++
Executable File
/*****************************************************************************
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* *
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* P I T *
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* *
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*---------------------------------------------------------------------------*
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* Beschreibung: Programmable Interval Timer. *
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* *
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* Autor: Michael Schoettner, 23.8.2016 *
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*****************************************************************************/
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#ifndef __PIT_include__
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#define __PIT_include__
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#include "kernel/interrupts/ISR.h"
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class PIT : public ISR {
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private:
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PIT(const PIT& copy) = delete; // Verhindere Kopieren
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enum { time_base = 838 }; /* ns */
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int timer_interval;
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char indicator[4] = {'|', '/', '-', '\\'};
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unsigned int indicator_pos = 0;
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unsigned long last_indicator_refresh = 0;
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public:
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// Zeitgeber initialisieren.
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PIT(int us) {
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this->interval(us);
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}
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// Konfiguriertes Zeitintervall auslesen.
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int interval() {
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return timer_interval;
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}
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// Zeitintervall in Mikrosekunden, nachdem periodisch ein Interrupt
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//erzeugt werden soll.
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void interval(int us);
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// Aktivierung der Unterbrechungen fuer den Zeitgeber
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void plugin();
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// Unterbrechnungsroutine des Zeitgebers.
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void trigger();
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};
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#endif
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