jens
f5fe03340f
- added timerStop() git-svn-id: http://moon:8086/svn/projects/HendiControl@66 fda53097-d464-4ada-af97-ba876c37ca34
66 lines
1.2 KiB
C
66 lines
1.2 KiB
C
/*
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* timer.c
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*
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* Created: 20.02.2019 20:56:18
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* Author: jens
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*/
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include "timer.h"
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#include "message.h"
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static uint16_t timer_reload = 0;
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static Timer_t user_timer[16];
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static Fifo *g_pFifo = NULL;
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ISR (TIMER1_OVF_vect) // Timer1 ISR
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{
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TCNT1 = timer_reload;
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for (int i=0; i < 16; i++)
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{
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if (user_timer[i].isRunning)
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{
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if (user_timer[i].count > 0)
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{
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user_timer[i].count--;
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}
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else
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{
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Msg_t msg = {Timer, i};
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if (fifo_push(g_pFifo, &msg))
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{
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user_timer[i].isRunning = 0;
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}
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}
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}
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}
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}
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void timer_init(Fifo *pFifo, uint16_t TIMER_RELOAD, TimerClockSel clockSel)
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{
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g_pFifo = pFifo;
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timer_reload = TIMER_RELOAD;
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TCNT1 = TIMER_RELOAD;
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TCCR1A = 0x00;
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TCCR1B = (TCCR1B & TimerClockSel_mask) | clockSel;
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TIMSK1 = (1 << TOIE1) ; // Enable timer1 overflow interrupt(TOIE1)
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}
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void timer_start(TimerId timerId, uint16_t count)
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{
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enterCritical();
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user_timer[timerId].count = count;
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user_timer[timerId].isRunning = 1;
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exitCritial();
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}
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void timer_stop(TimerId timerId)
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{
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enterCritical();
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user_timer[timerId].isRunning = 0;
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exitCritial();
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}
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