66 lines
1.2 KiB
C
66 lines
1.2 KiB
C
#include <inttypes.h>
|
|
#include <avr/io.h>
|
|
#include <avr/interrupt.h>
|
|
#define __DELAY_BACKWARD_COMPATIBLE__
|
|
#include <util/delay.h>
|
|
#include <stdlib.h>
|
|
#include <avr/pgmspace.h>
|
|
#include <lib/bughal.h>
|
|
#include <lib/freq_table.h>
|
|
#include <lib/apps.h>
|
|
|
|
static uint16_t osc;
|
|
static uint16_t sample;
|
|
static uint8_t row;
|
|
|
|
|
|
#define LENGTH(x) (sizeof(x) / sizeof(x[0]))
|
|
static const uint8_t mushroom[] = {6,1,6,10,13,18,13,1,6,8,13,8,13,18,20,25,20,3,8,11,15,11,15,20,23,27,23};
|
|
|
|
static void mariofx_ISR(void) {
|
|
if (row < LENGTH(mushroom)) {
|
|
osc += pgm_read_word(&freq_table[mushroom[row] + 18]) * 3;
|
|
if (++sample == 800 ) {
|
|
sample = 0;
|
|
row++;
|
|
}
|
|
} else {
|
|
if (btn_state(BTNST_SUP, BTN_RIGHT)) {
|
|
button_clear(BTN_RIGHT);
|
|
row = 0;
|
|
}
|
|
}
|
|
|
|
if (osc >= 0xc000) {
|
|
PORTB |= (1 << PORTB2);
|
|
PORTC &= ~(1<< PORTC5);
|
|
}
|
|
else {
|
|
PORTB &= ~(1<< PORTB2);
|
|
PORTC |= (1 << PORTC5);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
static void mariofx(void) {
|
|
/* initialisation required */
|
|
if (mode_uninitialized) {
|
|
mode_uninitialized = false;
|
|
|
|
init_buzzr();
|
|
osc = sample = row = 0;
|
|
start_timer(mariofx_ISR);
|
|
}
|
|
|
|
/*deinialisation required */
|
|
if (mode_last_tick) {
|
|
stop_timer();
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
REGISTER(mariofx);
|