Autonom robotväckarklocka med trådlös basstation - KTH

Bilaga 1: Kod
ultrasound.c
#include
#include
#include
#include
#include "backend.h"
#define ZERO 118 //zero value, from calibration
#define MULTI 0.319488818 //Multiple value, from calibration
#define f_cpu 8000000
int main(void) {
startProcessor();
);
}
//Setting up USART
DisplayStart();
sei(); //Enables interrupts
while(1){
}
_delay_ms(10);
FreqReset();
_delay_ms(10);
TimerStart();
FreqGenStart();
while(TimerWait);
USART_TransmitDistance( (unsigned int)((double)(getTime()-ZERO)*MULTI)
ResetTime();
_delay_ms(400);
backend.c
#include
#include
#include
#include
char outfreq = 0;
char enable = 0;
unsigned char count = 0;
char start = 0;
char timerOn = 0;
unsigned char timerOverflowCount = 0;
unsigned int time = 0;
ISR(TIMER0_COMP_vect){
if(enable | start)
{
PORTB = outfreq;
outfreq = ~outfreq;
if(start)