From ab93aa6db1bd743a27d4e429e558405d68c85e63 Mon Sep 17 00:00:00 2001
From: Nick Gnoevoj <nick.gnoevoj@informatik.hs-fulda.de>
Date: Wed, 15 Jan 2020 21:59:11 +0100
Subject: [PATCH] =?UTF-8?q?Temperatur=20und=20Abstandsmessung=20hinzugef?=
 =?UTF-8?q?=C3=BCgt.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Temperatur_und_Abstandsmessung.ino        | 115 ++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 Code/Temperatur_und_Abstandsmesung/Temperatur_und_Abstandsmessung.ino

diff --git a/Code/Temperatur_und_Abstandsmesung/Temperatur_und_Abstandsmessung.ino b/Code/Temperatur_und_Abstandsmesung/Temperatur_und_Abstandsmessung.ino
new file mode 100644
index 0000000..60cd80e
--- /dev/null
+++ b/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);
+
+}