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 * Copyright (c) 2019, Texas Instruments Incorporated
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//*****************************************************************************
//   HAL Timer functions
//
// Texas Instruments, Inc.
// *****************************************************************************
#include <msp430.h>
#include <stdint.h>
#include <stdlib.h>
#include <HAL.h>
#include "HAL_Config_Private.h"

// Simple callbacks to main function
extern void TimerCallback(void);

/**** Functions **************************************************************/
void HAL_Timer_Init(void)
{
    // Initialize a timer to update the counter
    // Configure Timer
    TB0CCR0 = LSBUS_FREQ_HZ / 2;                      // 0.5sec
    TB0CCTL0 = CCIE;                        // TBCCR0 interrupt enabled
    TB0CTL = TBSSEL__ACLK |                 // Use ACLK
            MC__UP |                       // Up Mode
            TBCLR;                         // Clear counter
}


// Timer B0 interrupt service routine
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector = TIMER0_B0_VECTOR
__interrupt void Timer(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(TIMER0_B0_VECTOR))) Timer_B0 (void)
#else
#error Compiler not supported!
#endif
{
    TimerCallback();
    __bic_SR_register_on_exit(LPM3_bits);   // Exit LPM3
}