void play(char m)
{
if (m == ' ') {
tmr_delay(tmrid, 2 * dot_delay);
} else {
pio_pin_sethigh("PF_0");
pwm_start(pwmid);
tmr_delay(tmrid, m == '.' ? dot_delay : 3 *dot_delay);
pwm_stop(pwmid);
pio_pin_setlow("PF_0");
tmr_delay(tmrid, dot_delay);
}
}
void beep(void)
{
// Enable Buzzer
PORT_BUZZER_O &= ~(1<<BIT_BUZZER_O);
// Wait 100 ms
tmr_delay(100);
// Disable Buzzer
PORT_BUZZER_O |= (1<<BIT_BUZZER_O);
}
int main(void)
{
// Set BUZZER_O as output pin
DDR_BUZZER_O |= (1<<BIT_BUZZER_O);
// Disable Buzzer
PORT_BUZZER_O |= (1<<BIT_BUZZER_O);
// Initialise timer
tmr_init();
// Repeat indefinitely
for(;;)
{
beep();
// Wait 1 s
tmr_delay(1000);
}
}
