1
0
mirror of https://github.com/jscrane/r65emu.git synced 2024-07-19 21:29:06 +00:00
r65emu/timed.cpp

28 lines
760 B
C++
Raw Normal View History

2014-11-13 19:20:01 +00:00
#include <Energia.h>
#include <stdint.h>
#include <inc/hw_ints.h>
#include <driverlib/interrupt.h>
#include <driverlib/sysctl.h>
#include <driverlib/timer.h>
#include "timed.h"
static Timed *t;
// FIXME: disable timer when tick() returns false
static void timer0isr(void) {
ROM_TimerIntClear(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
t->tick();
}
void timer_create(unsigned freq, Timed *client) {
t = client;
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
ROM_TimerConfigure(TIMER0_BASE, TIMER_CFG_PERIODIC);
TimerIntRegister(TIMER0_BASE, TIMER_A, timer0isr);
ROM_TimerEnable(TIMER0_BASE, TIMER_A);
ROM_IntEnable(INT_TIMER0A);
ROM_TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
ROM_TimerLoadSet(TIMER0_BASE, TIMER_A, ROM_SysCtlClockGet() / freq);
}