mirror of https://github.com/jscrane/r65emu.git
28 lines
760 B
C++
28 lines
760 B
C++
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#include <Energia.h>
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#include <stdint.h>
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#include <inc/hw_ints.h>
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#include <driverlib/interrupt.h>
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#include <driverlib/sysctl.h>
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#include <driverlib/timer.h>
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#include "timed.h"
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static Timed *t;
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// FIXME: disable timer when tick() returns false
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static void timer0isr(void) {
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ROM_TimerIntClear(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
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t->tick();
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}
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void timer_create(unsigned freq, Timed *client) {
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t = client;
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ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
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ROM_TimerConfigure(TIMER0_BASE, TIMER_CFG_PERIODIC);
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TimerIntRegister(TIMER0_BASE, TIMER_A, timer0isr);
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ROM_TimerEnable(TIMER0_BASE, TIMER_A);
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ROM_IntEnable(INT_TIMER0A);
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ROM_TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
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ROM_TimerLoadSet(TIMER0_BASE, TIMER_A, ROM_SysCtlClockGet() / freq);
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}
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