/* LPC21xx / ARM7: toggle buzzer on P0.16 */
#include <lpc21xx.h>

void delay(unsigned int n) {
    unsigned int i;
    for (i = 0; i < n; i++);
}

int main(void) {
    IO0DIR |= 0x00010000;
    while (1) {
        IO0SET = 0x00010000;
        delay(500000);
        IO0CLR = 0x00010000;
        delay(500000);
    }
}
