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Temperatur und Abstandsmessung hinzugefügt.

patch-3
Nick Gnoevoj 5 years ago
parent
commit
ab93aa6db1
  1. 115
      Code/Temperatur_und_Abstandsmesung/Temperatur_und_Abstandsmessung.ino

115
Code/Temperatur_und_Abstandsmesung/Temperatur_und_Abstandsmessung.ino

@ -0,0 +1,115 @@
#include <OneWire.h>
#define trig PD3
#define echo PD4
long distance = 0;
int count = 0;
// ISR For Timer
ISR(TIMER0_COMPA_vect){
//set count depending on tcnt0 and the prescaler
if(count == 96){
count = 0;
TCNT0 = 0;
digitalWrite(trig, HIGH);
// ... wait for 10 µs ...
delayMicroseconds(10);
// ... put the trigger down ...
digitalWrite(trig, LOW);
PCICR |= 0b00000100;
PCMSK2 |= 0b00010000;
} else {
count++;
}
}
//ISR for PCINT20
ISR(PCINT2_vect) {
distance = pulseIn(echo, HIGH);
PCICR &= ~0b00000100;
PCMSK2 &= ~0b00010000;
delayMicroseconds(10);
}
long calculateDistance(){
return (long) (((float) distance/ 58.0));
}
int16_t dallas(int x, byte start){
OneWire ds(x);
byte i;
byte data[2];
int16_t result;
do{
ds.reset();
ds.write(0xCC); //skip Command
ds.write(0xBE); //Read 1st 2 bytes of Scratchpad
result = 0;
for(i = 0; i < 2; i++){
data[i] = ds.read();
result += data[i];
}
result = result/2;
ds.reset();
ds.write(0xCC);
ds.write(0x44, 1); //start conversion
if(start){
delay(1000);
}
} while(start--);
return result;
}
void initS(){
TCNT0 = 0; // reset timer
TCCR0A |= 0b00000010;
TCCR0B |= 0b0000011; //set prescaler to 64 becasue 256 does not work
OCR0A = 255;
TIMSK0 |= 0b00000010;
sei();
}
void setup(){
Serial.begin(9600);
dallas(2, 1);
// Initializing Trigger Output and Echo Input
pinMode(trig, OUTPUT);
pinMode(echo, INPUT);
// Reset the trigger pin and wait a half a second
digitalWrite(trig, LOW);
delayMicroseconds(500);
initS();
}
void loop(){
long run_time = micros();
Serial.print("Temperatur: ");
Serial.println(dallas(2, 0));
Serial.print("Distanz: ");
Serial.print(calculateDistance());
Serial.println("cm");
run_time = micros() - run_time;
Serial.print("Zeit für Durchlauf: ");
Serial.println(run_time);
Serial.println();
delay(1000);
}
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