blink.c

#include <msp430.h>
#include "../misc.h"

int main(void) {
  stop_watchdog();
	// set up bit 0 of P1 as output
	// P1DIR = BIT0 | BIT6;
	P1DIR = 0;
	pinmode_out(1,0);
	pinmode_out(1,6);
	// clear all output pins
	port_clear(1);

	// loop forever
	for (;;) {
		green_led_on();
		delay(0x6000);
		green_led_off();
		red_led_on();
		delay(0x6000);
		red_led_off();
	}
}

misc.h

#ifndef IG_MSP430_MISC_H__
#define IG_MSP430_MISC_H__

#define pinmode_out(port,pin) P##port##DIR |= BIT##pin
#define stop_watchdog() WDTCTL = WDTPW | WDTHOLD
#define delay(x) for (volatile int _delayctr = 0; _delayctr < (x); _delayctr++);

#define port_clear(port) P##port##OUT = 0

#define pin_on(port,pin)  P##port##OUT |= BIT##pin
#define pin_off(port,pin) P##port##OUT &= ~(BIT##pin)
#define pin_toggle(port,pin) P##port##OUT ^= BIT##pin

#define green_led_on() pin_on(1,0)
#define green_led_off() pin_off(1,0)
#define green_led_toggle() pin_toggle(1,0)

#define red_led_on() pin_on(1,6)
#define red_led_off() pin_off(1,6)
#define red_led_toggle() pin_toggle(1,6)

#endif