#include <msp430.h>

#define DEVELOPMENT_MODE 0x5A80
#define ENABLE_IO   0xFFFE
#define BTN_RED 0x10


main() {
    WDTCTL = DEVELOPMENT_MODE;
    PM5CTL0 = ENABLE_IO;
    P1DIR = 0x80;
    P9DIR = 0x02;

    P2OUT = BIT4;
    P2REN = BIT4;

    P9OUT = BIT4;
    P9REN = BIT4;

    while (1) {
        if ((BIT4 & P2IN) == 0)
            P1OUT |= 0x80;
        else
            P1OUT = BIT4;

        if ((BIT4 & P9IN) == 0)
            P9OUT |= 0x02;
        else
            P9OUT = BIT4;
    }
}