bsp.c

a super good method for designing finite state machine

/*****************************************************************************
* PELICAN crossing example
* Last Updated for Version: 1.5.00
* Date of the Last Update:  Sep 17, 2006
*
* Copyright (C) 2002-2006 Quantum Leaps, LLC. All rights reserved.
*
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* Foundation and appearing in the file GPL.TXT included in the packaging of
* this file. Please note that GPL Section 2[b] requires that all works based
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#include "qpn_port.h"
#include "qassert.h"
#include "bsp.h"

#define LED_on()   (P1OUT |= (uint8_t)1)
#define LED_off()  (P1OUT &= (uint8_t)~1)

/*..........................................................................*/
#pragma vector = TIMERA0_VECTOR
__interrupt void timerA_ISR(void) {
    __low_power_mode_off_on_exit();
    QF_tick();
}
/*..........................................................................*/
void BSP_init(void) {
    WDTCTL = (WDTPW | WDTHOLD);                                 /* Stop WDT */
    P1DIR |= 0x01;                                           /* P1.0 output */
    CCR0   = ((BSP_SMCLK + BSP_TICKS_PER_SEC/2) / BSP_TICKS_PER_SEC);
    TACTL  = (TASSEL_2 | MC_1);                            /* SMCLK, upmode */
}
/*..........................................................................*/
void QF_start(void) {
    CCTL0 = CCIE;                                 /* CCR0 interrupt enabled */
}
/*..........................................................................*/
void QF_onIdle(void) {
    __low_power_mode_1();                                     /* Enter LPM1 */
}
/*..........................................................................*/
void Q_assert_handler(char const Q_ROM *file, int line) {
    (void)file;                                   /* avoid compiler warning */
    (void)line;                                   /* avoid compiler warning */
    QF_INT_LOCK();                  /* make sure that interrupts are locked */
    for (;;) {
    }
}
/*..........................................................................*/
void BSP_signalPeds(enum BSP_PedsSignal sig) {
    if (sig == PEDS_DONT_WALK) {
        LED_on();
    }
    else {
        LED_off();
    }
}