Hello all,
I am embarking on a rather ambitious project with Arduino. I am new to Arduino but I have decent experience with C++ in programming classes I took in school.
Basically what I am trying to do is use both the TSOP1838 IR Infrared Receiver and the One Wire Digital Temperature (DS18B20) at the same time to make a DIY digital thermostat (Arduino will turn a relay on/off for a fan to regulate temperature) and IR to receive remote control for lights in the room from an Apple remote. I borrowed heavily from other demos available online. Both work great separately, but when combined, wonky things happen.
I believe that this is due to both codes I am using making the IR receiver and digital temperature as serial devices on 3600?
Here are my two codes:
IR Code:
#include <IRremote.h>
int RECV_PIN = 22;
IRrecv irrecv(RECV_PIN);
decode_results results;
void setup()
{
Serial.begin(9600);
irrecv.enableIRIn(); // Start the receiver
}
void loop()
{
if (irrecv.decode(&results))
{
Serial.println(results.value); //, HEX <- took this out, values were initially passed in HEX
if(results.value==2011242612)
{
Serial.println("Center Button");
}
if(results.value==4294967295)
{
Serial.println("Down Button");
}
irrecv.resume(); // Receive the next value
}
}
Temperature code:
#include <OneWire.h>
int DS18S20_Pin = 2; //DS18S20 Signal pin on digital 2
//Temperature chip i/o
OneWire ds(DS18S20_Pin); // on digital pin 2
void setup()
{
Serial.begin(9600);
}
void loop()
{
float temperature = getTemp();
/*
Serial.print(temperature);
Serial.print(" C");
Serial.println(" ");
*/
float temperatureF=0;
temperatureF=(temperature*(9/5)+32);
Serial.println(" ");
Serial.print(temperatureF);
Serial.print(" F");
Serial.println(" ");
delay(5000); //just here to slow down the output so it is easier to read
}
float getTemp(){
//returns the temperature from one DS18S20 in DEG Celsius
byte data[12];
byte addr[8];
if ( !ds.search(addr)) {
//no more sensors on chain, reset search
ds.reset_search();
return -1000;
}
if ( OneWire::crc8( addr, 7) != addr[7]) {
Serial.println("CRC is not valid!");
return -1000;
}
if ( addr[0] != 0x10 && addr[0] != 0x28) {
Serial.print("Device is not recognized");
return -1000;
}
ds.reset();
ds.select(addr);
ds.write(0x44,1); // start conversion, with parasite power on at the end
byte present = ds.reset();
ds.select(addr);
ds.write(0xBE); // Read Scratchpad
for (int i = 0; i < 9; i++) { // we need 9 bytes
data[i] = ds.read();
}
ds.reset_search();
byte MSB = data[1];
byte LSB = data[0];
float tempRead = ((MSB << 8) | LSB); //using two's compliment
float TemperatureSum = tempRead / 16;
return TemperatureSum;
}
I really appreciate all of your help. I intend to make my project available online with as much documentation as I could give, so I promise I will give back!
Paul