/*
 * www.microDigitalEd.com
 * Ex5-13
 */
 
#include "msp.h"
int main(void) {
    /* initialize P2.0 for red LED */
    P2->SEL1 &= ~1;       /* configure P2.0 as simple I/O */
    P2->SEL0 &= ~1;
    P2->DIR |= 1;         /* P2.0 set as output */

TIMER_A1->CTL= 0x0211;    /* SMCLK, ID= /1, up mode, TA clear */
TIMER_A1->EX0= 0;         /* Divider2 = 1/(0+1) = 1/1 */
TIMER_A1->CCR[0]= 30 - 1;    

while (1) {
    while((TIMER_A1->CCTL[0]& 1) == 0); /* wait until the CCIFG is set */
    TIMER_A1->CCTL[0]&= ~1;             /* clear interrupt flag */
        P2->OUT ^= 1;                 /* toggle red LED */
    }
}