210 lines
3.2 KiB
C
210 lines
3.2 KiB
C
#include <inttypes.h>
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#define __DELAY_BACKWARD_COMPATIBLE__
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#include <util/delay.h>
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#include <stdlib.h>
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#define LED_L (1 << PORTC0)
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#define LED_R (1 << PORTC2)
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#define MOTOR_ON (0<<PORTB1)
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#define MOTOR_OFF (1<<PORTB1)
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static void init_leds(void){
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//enable LED channels as output
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DDRC |= (1 << PORTC0) | (1 << PORTC1) | (1 << PORTC2) | (1 << PORTC3);
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// both LEDs off
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PORTC &= ~((1 << PORTC0) | (1 << PORTC1) | (1 << PORTC2) | (1 << PORTC3));
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return;
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}
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static void inline led_on(int leds){
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PORTC |= leds;
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}
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static void inline led_off(int leds){
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PORTC &= ~leds;
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return;
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}
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static void inline buzzr_off(void){
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PORTC &= ~(1 << PORTC5);
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PORTB &= ~(1 << PORTB2);
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}
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static void init_buzzr(void){
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//its on B2 and C5, for reasons
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DDRC |= (1 << PORTC5);
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DDRB |= (1 << PORTB2);
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//switch it off
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buzzr_off();
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return;
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}
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static void buzzr_up(void){
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PORTC &= ~(1 << PORTC5);
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PORTB |= (1 << PORTB2);
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return;
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}
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static void buzzr_down(void){
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PORTC |= (1 << PORTC5);
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PORTB &= ~(1 << PORTB2);
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}
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static void buzzr_inv(void){
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PORTC ^= (1 << PORTC5);
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PORTB ^= (1 << PORTB2);
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}
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static void init_motor(void)
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{
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/* vibration motor on B1, initially off: */
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DDRB |= (1 << PORTB1);
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PORTB &= ~( 1<<PORTB1);
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return;
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}
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static void set_motor(int val){
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PORTB = ~(val);
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PORTB = PORTB;
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return;
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}
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static void init_switch(void){
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DDRD &= ~( (1 << PORTD1) | (1<<PORTD0));
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PORTD |= (1 << PORTD1) | (1<<PORTD0); //Pullups FTW
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return;
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}
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static void blinkrattlebeep(void){
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led_off(LED_L|LED_R);
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_delay_ms(100);
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led_on(LED_L);
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_delay_ms(100);
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led_off(LED_L);
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led_on(LED_R);
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_delay_ms(100);
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led_off(LED_R);
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set_motor(MOTOR_ON);
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_delay_ms(200);
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set_motor(MOTOR_OFF);
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buzzr_up();
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for (int i=0; i<100; i++){
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_delay_ms(2);
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buzzr_inv();
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};
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buzzr_off();
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}
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static void mode_motortest(void)
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{
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set_motor(MOTOR_ON);
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_delay_ms(400);
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set_motor(MOTOR_OFF);
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_delay_ms(500);
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return;
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}
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static void mode_blinktest(void)
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{
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led_off(LED_L|LED_R);
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_delay_ms(100);
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led_on(LED_L);
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_delay_ms(100);
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led_off(LED_L);
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led_on(LED_R);
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_delay_ms(100);
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led_off(LED_R);
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return;
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}
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static void mode_beeptest(void)
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{
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buzzr_up();
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for (int i=0; i<100; i++){
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_delay_ms(2);
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buzzr_inv();
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};
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buzzr_off();
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return;
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}
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static void flashleds(int leds)
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{
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led_off(LED_L|LED_R);
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for (int i=0; i<10; i++){
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led_on(leds);
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_delay_ms(10);
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led_off(LED_L|LED_R);
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_delay_ms(90);
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};
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return;
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}
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int main(void)
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{
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/* hardware initialisation: */
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init_motor();
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init_buzzr();
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init_leds();
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init_switch();
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uint8_t mode = 0;
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for(;;) /* ever */ {
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//do something
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switch(mode){
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case 1:
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mode_blinktest();
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break;
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case 2:
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mode_motortest();
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break;
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case 3:
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mode_beeptest();
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break;
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default: //mode=0;
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blinkrattlebeep();
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}
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//check switches and change mode
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switch( PIND & 0b00000011){
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case 0b00000010: //left switch pressed
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mode--;
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if (mode > 3) mode =3;
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flashleds(LED_L);
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break;
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case 0b00000001: //right switch pressed
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mode++;
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if (mode > 3) mode = 0;
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flashleds(LED_R);
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break;
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case 0b00000000: //both switches pressed
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flashleds(LED_R|LED_L);
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break;
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}
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}
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/* never return 0; */
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return 0;
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}
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