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82 lines
1.6 KiB
C
82 lines
1.6 KiB
C
/*
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* Copyright (C) 2014 INRIA
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*
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* The source code is licensed under the LGPLv2 license,
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* See the file LICENSE for more details.
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*/
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/**
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* @ingroup cc430
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* @{
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*/
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/**
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* @file
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* @brief cc430 hardware timer driver
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*
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* @author Kévin Roussel <Kevin.Roussel@inria.fr>
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* @author Oliver Hahm <oliver.hahm@inria.fr>
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* @author Aleksandr Mikoff <sir.enmity@gmail.com>
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*
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*/
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#include <legacymsp430.h>
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#include "board.h"
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#include "hwtimer.h"
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#include "hwtimer_arch.h"
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#include "cpu.h"
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#define ENABLE_DEBUG (0)
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#include "debug.h"
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static uint32_t ticks = 0;
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extern void (*int_handler)(int);
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extern void timer_unset(short timer);
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void timerA_init(void)
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{
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ticks = 0; // Set tick counter value to 0
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TA0CTL = TASSEL_1 + TACLR; // Clear the timer counter, set ACLK
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TA0CTL &= ~TAIE; // Clear the IFG
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volatile unsigned int *ccr = &TA0CCR0;
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volatile unsigned int *ctl = &TA0CCTL0;
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for (int i = 0; i < ARCH_MAXTIMERS; i++) {
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*(ccr + i) = 0;
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*(ctl + i) &= ~(CCIFG);
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*(ctl + i) &= ~(CCIE);
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}
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TA0CTL |= MC_2;
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}
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interrupt(TIMER0_A0_VECTOR) __attribute__((naked)) timer0_a0_isr(void)
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{
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__enter_isr();
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timer_unset(0);
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int_handler(0);
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__exit_isr();
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}
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interrupt(TIMER0_A1_VECTOR) __attribute__((naked)) timer0_a1_5_isr(void)
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{
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__enter_isr();
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short taiv = TA0IV;
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short timer;
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if (taiv & TAIFG) {
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DEBUG("Overflow\n");
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}
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else {
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timer = (taiv / 2);
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timer_unset(timer);
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int_handler(timer);
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}
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__exit_isr();
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}
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