#include <OneWire.h>
#include <DallasTemperature.h>

// Data wire is plugged into port 2 on the Arduino
#define ONE_WIRE_BUS 11
#define jdq 12
#define TEMPERATURE_PRECISION 12

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);

int numberOfDevices; // Number of temperature devices found

DeviceAddress tempDeviceAddress; // We'll use this variable to store a found device address

void setup(void)
{
// start serial port
pinMode(12, OUTPUT);
delay(200);
Serial.begin(9600);
Serial.println("Dallas Temperature IC Control Library Demo");
digitalWrite(12,LOW);
delay(100);
// Start up the library
sensors.begin();

// Grab a count of devices on the wire
numberOfDevices = sensors.getDeviceCount();

// locate devices on the bus
Serial.print("Locating devices...");

Serial.print("Found ");
Serial.print(numberOfDevices, DEC);
Serial.println(" devices.");

// report parasite power requirements
Serial.print("Parasite power is: ");
if (sensors.isParasitePowerMode()) Serial.println("ON");
else Serial.println("OFF");

// Loop through each device, print out address
for(int i=0;i<numberOfDevices; i++)
{
// Search the wire for address
if(sensors.getAddress(tempDeviceAddress, i))
{
Serial.print("Found device ");
Serial.print(i, DEC);
Serial.print(" with address: ");
printAddress(tempDeviceAddress);
Serial.println();

Serial.print("Setting resolution to ");
Serial.println(TEMPERATURE_PRECISION,DEC);

// set the resolution to 9 bit (Each Dallas/Maxim device is capable of several different resolutions)
sensors.setResolution(tempDeviceAddress, TEMPERATURE_PRECISION);

Serial.print("Resolution actually set to: ");
Serial.print(sensors.getResolution(tempDeviceAddress), DEC);
Serial.println();
}else{
Serial.print("Found ghost device at ");
Serial.print(i, DEC);
Serial.print(" but could not detect address. Check power and cabling");
}
}

}
int HH0 = 0;
int HH1 = 0;
int H1 = 0;
int H0 = 0;
int LL1 = 0;
int LL0 = 0;
int L1 = 0;
int L0 = 0;
// function to print the temperature for a device
void printTemperature(DeviceAddress deviceAddress,int i)
{
// method 1 - slower
//Serial.print("Temp C: ");
//Serial.print(sensors.getTempC(deviceAddress));
//Serial.print(" Temp F: ");
//Serial.print(sensors.getTempF(deviceAddress)); // Makes a second call to getTempC and then converts to Fahrenheit

// method 2 - faster
float tempC = sensors.getTempC(deviceAddress);
Serial.print("Temp C: ");
Serial.print(tempC);
Serial.print(" Temp F: ");
Serial.println(DallasTemperature::toFahrenheit(tempC)); // Converts tempC to Fahrenheit

if (tempC > 25 && i == 0) {HH0 = 1;H0 = 0;LL0 = 0;L0 = 0; }
else if (tempC > 22 && i == 0) {HH0 = 0;H0 = 1;LL0 = 0;L0 = 0; }
else if (tempC > 20 && i == 0) {HH0 = 0;H0 = 0;LL0 = 0;L0 = 0; }
else if (tempC > 18 && i == 0) {HH0 = 0;H0 = 0;LL0 = 0;L0 = 1; }
else if ( i == 0) {HH0 = 0;H0 = 0;LL0 = 1;L0 = 0; }

if (tempC > 25 && i == 1) {HH1 = 1;H1 = 0;LL1 = 0;L1 = 0; }
else if (tempC > 22 && i == 1) {HH1 = 0;H1 = 1;LL1 = 0;L1 = 0; }
else if (tempC > 20 && i == 1) {HH1 = 0;H1 = 0;LL1 = 0;L1 = 0; }
else if (tempC > 18 && i == 1) {HH1 = 0;H1 = 0;LL1 = 0;L1 = 1; }
else if ( i == 1) {HH1 = 0;H1 = 0;LL1 = 1;L1 = 0; }

}

void loop(void)
{
if (HH1 == 1 || HH0 == 1 ) {digitalWrite(jdq,LOW); delay(200);}
else if (LL1 == 1 || LL0 == 1 ) {digitalWrite(jdq,HIGH); delay(200);}
else if (L1 == 1 && L0 == 1 ) {digitalWrite(jdq,HIGH); delay(200);}
else if (H1 == 1 && H0 == 1 ) {digitalWrite(jdq,LOW); delay(200);}

// call sensors.requestTemperatures() to issue a global temperature
// request to all devices on the bus
Serial.print("Requesting temperatures...");
sensors.requestTemperatures(); // Send the command to get temperatures
Serial.println("DONE");


// Loop through each device, print out temperature data
for(int i=0;i<numberOfDevices; i++)
{
// Search the wire for address
if(sensors.getAddress(tempDeviceAddress, i))
{
// Output the device ID
Serial.print("Temperature for device: ");
Serial.println(i,DEC);

// It responds almost immediately. Let's print out the data
printTemperature(tempDeviceAddress,i); // Use a simple function to print out the data
}
//else ghost device! Check your power requirements and cabling

}
delay(10000);

}

// function to print a device address
void printAddress(DeviceAddress deviceAddress)
{
for (uint8_t i = 0; i < 8; i++)
{
if (deviceAddress[i] < 16) Serial.print("0");
Serial.print(deviceAddress[i], HEX);
}
}

 

///////////    2个  ds18b20 接在 11arduino D11    ，   继电器 接在  D1