59 lines
1.2 KiB
C
59 lines
1.2 KiB
C
#include <msp430x16x.h>
|
|
#include <hwtimer.h>
|
|
#include <hwtimer_arch.h>
|
|
#include <cpu.h>
|
|
|
|
static uint32_t ticks = 0;
|
|
|
|
extern void (*int_handler)(int);
|
|
extern void TA0_unset(short timer);
|
|
|
|
void timerA_init(void)
|
|
{
|
|
ticks = 0; // Set tick counter value to 0
|
|
TA0CTL = TASSEL_1 + TACLR; // Clear the timer counter, set ACLK
|
|
TA0CTL &= ~TAIFG; // Clear the IFG
|
|
TA0CTL &= ~TAIE; // Clear the IFG
|
|
volatile unsigned int *ccr = &TA0CCR0;
|
|
volatile unsigned int *ctl = &TA0CCTL0;
|
|
|
|
for (int i = 0; i < ARCH_MAXTIMERS; i++) {
|
|
*ccr = 0;
|
|
*ctl &= ~(CCIFG);
|
|
*ctl &= ~(CCIE);
|
|
}
|
|
|
|
ITA0CTL |= MC_2;
|
|
}
|
|
|
|
interrupt(TIMERA0_VECTOR) __attribute__((naked)) timer_isr_ccr0(void)
|
|
{
|
|
__enter_isr();
|
|
|
|
TA0_unset(0);
|
|
int_handler(0);
|
|
|
|
__exit_isr();
|
|
}
|
|
|
|
interrupt(TIMERA1_VECTOR) __attribute__((naked)) timer_isr(void)
|
|
{
|
|
__enter_isr();
|
|
|
|
short taiv = TA0IV;
|
|
|
|
if (taiv & TAIFG) {
|
|
// puts("msp430/hwtimer_cpu TAIFG set!");
|
|
// TA0CTL &= ~TAIFG;
|
|
// ticks += 0xFFFF;
|
|
}
|
|
else {
|
|
|
|
short timer = (taiv / 2);
|
|
TA0_unset(timer);
|
|
int_handler(timer);
|
|
}
|
|
|
|
__exit_isr();
|
|
}
|