Page 44 - MDP2020-2

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<아두이노 블루투스 송신코드>

#include <Wire.h>
#include <OneWire.h>
#include <SoftwareSerial.h>

int Tx=8; //전송
int Rx=9; //수신

SoftwareSerial blth(Tx, Rx);
OneWire ds(2);

unsigned long time_previous, time_current;

void setup()
{
Serial.begin(9600);
blth.begin(9600);
time_previous = millis();
}

void loop()
{
time_current = millis();
double temp = getTemp();

if (blth.available()) {
Serial.write(blth.read());
}
if (Serial.available()) {
blth.write(Serial.read());
}
if(time_current-time_previous >=1000)
{
blth.print(temp);
blth.println("");
Serial.println(temp);
}
}
float getTemp(){
//returns the temperature from one DS18S20 in DEG Celsius

byte data[12];

byte addr[8];