#include <stdint.h>
#include <stdbool.h>
#include <msp430.h>

#define interrupt(x) void __attribute__((interrupt (x)))

void delay_ms(uint16_t ms) {
    while (ms--)
        __delay_cycles(16000);
}

uint8_t s1, s2;
uint8_t a;

interrupt(TIMER0_A0_VECTOR) ta1_isr() {
    TACCR1 = (s1 + s2) / 2;
    
    s1 += 2;
    s2 += 1;
}

int main() {
    // Disable watchdog
    WDTCTL = WDTPW | WDTHOLD;
    
    // 16MHz clock
    BCSCTL1 = CALBC1_16MHZ;
    DCOCTL = CALDCO_16MHZ;
    
    P1SEL |= 0x04;
    P1DIR |= 0x04;
    
    TACTL |= TACLR;
    TACTL = TASSEL_2;
    TACCTL0 = CCIE;
    TACCTL1 = OUTMOD_7;
    TACCR0 = 256;
    TACCR1 = 0;
    
    __enable_interrupt();
    TACTL |= MC_1;
    
    int16_t a = 1, wl = 0;
    while (1) {
        __delay_cycles(100);
    }
}