132 lines
2.1 KiB
C
132 lines
2.1 KiB
C
#include <inttypes.h>
|
|
#include <avr/io.h>
|
|
#include <avr/interrupt.h>
|
|
#include <util/delay.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "main.h"
|
|
#include "lib/synth.h"
|
|
#include "lib/usart.h"
|
|
#include "lib/bughal.h"
|
|
|
|
|
|
uint16_t sw_v = 0;
|
|
uint16_t darkness = 0;
|
|
uint16_t darkval = 0;
|
|
uint16_t last_darkval = 0;
|
|
|
|
|
|
static void init_sampletimer(void)
|
|
{
|
|
/*
|
|
* Timer 0
|
|
*/
|
|
|
|
/* set timer0 to CTC & prescaler 64 → 125kHz increment */
|
|
TCCR0A = (1 << WGM01);
|
|
TCCR0B = (1 << CS00) | (1 << CS01);
|
|
|
|
OCR0A = 6; /* TOP */
|
|
TCNT0 = 0;
|
|
/*enable interrupt*/
|
|
TIMSK0 |= (1<<OCIE0A);
|
|
}
|
|
|
|
static inline void init_pwm(void)
|
|
{
|
|
/* set PB2 as output (buzzer pwm port):*/
|
|
DDRB |= (1 << PORTB2);
|
|
|
|
/* analog value preselection :*/
|
|
OCR1B = 0x007F;
|
|
|
|
/* Top value. Timer overflows here. Thus we have a resulting 8bit pwm */
|
|
ICR1 = 0x00FF;
|
|
|
|
/* only b-chan , fastpwm (mode 14), no prescale */
|
|
TCCR1A = (1 << COM1B1) | (1 << WGM11);
|
|
TCCR1B = (1 << WGM13 ) | (1 << WGM12) | (1 << CS10);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
inline void setleds(uint8_t state)
|
|
{
|
|
/* set leds according to */
|
|
PORTC |= (state | 0b00001111);
|
|
PORTC &= ~(state | 0b11110000);
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
|
|
void __attribute__((noreturn))
|
|
main(void)
|
|
{
|
|
/* hardware initialisation: */
|
|
init_leds();
|
|
//USART0_Init();
|
|
// init_motor();
|
|
//init_pwm();
|
|
//init_sampletimer();
|
|
|
|
/* syntesizer initialisation */
|
|
//synth_init();
|
|
|
|
/* here the show begins:*/
|
|
//sei();
|
|
for(;;) /* ever */ {
|
|
|
|
//do something
|
|
//synth_poll();
|
|
//USART0_put_uint16(0xA09F);
|
|
//USART0_crlf();
|
|
}
|
|
|
|
/* never return 0; */
|
|
}
|
|
|
|
|
|
|
|
ISR(TIMER2_COMPA_vect)
|
|
{
|
|
darkval++;
|
|
switch(sw_v){
|
|
|
|
case 0 : // Set PC0 to 1 and PC1 to 0 - charge LED
|
|
|
|
DDRC = 0b00000011;
|
|
PORTC = 0b00000010;
|
|
|
|
darkness = 0;
|
|
sw_v++;
|
|
|
|
break;
|
|
|
|
case 10 : // set PC0 to 0 and PC1 as input
|
|
|
|
DDRC = 0b00000001;
|
|
PORTC = 0b00000000;
|
|
|
|
sw_v++;
|
|
break;
|
|
case 5000 : sw_v = 0;
|
|
//darkval = darkness;
|
|
//darkval = 1234;
|
|
break;
|
|
default : //measure if PC1 falls to LOW
|
|
if ((darkness==0) && ((PINC && 0b00000010)==0)){
|
|
darkness = sw_v;
|
|
};
|
|
sw_v++;
|
|
|
|
|
|
}; //end switch
|
|
|
|
//PORTC ^= 0b00001111; //toggle C0, C1, C2,C3
|
|
//PORTC = 0;
|
|
|
|
}
|