hello, i got a problem with the code. initially i wear 2 arduino, and currently i want to wear just 1 arduino. how to combine 2 codes into 1 code only? I really need help.
here the code :
//Master
/* Sensor LM 35
Mencetak temperatur ke serial monitor */
#include <Wire.h>
#include <Keypad.h>
#include <LiquidCrystal_I2C.h>
int state = 0; // 0 = otomatis & 1 = manual
//Variable untuk keypad
const int inPin = 0;
const byte ROWS = 4; // jumlah baris = 4
const byte COLS = 3; // jumlah kolom = 3
// Mendefiniskan keypad map
char keys[ROWS][COLS] = {
{'1','2','3'},
{'4','5','6'},
{'7','8','9'},
{'*','0','#'}
};
// Menyambungkan keypad ROW0, ROW1, ROW2 dan ROW3 ke pin digital arduino.
byte rowPins[ROWS] = { 0, 1 , 7, 8 };
// Menyambungkan keypad COL0, COL1 and COL2 ke pin digital arduino.
byte colPins[COLS] = { 9, 10, 13 };
//Menciptakan 'objek keypad'
Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
// Inisialisasi library tadi dengan nomor pin
// yang digunakan untuk interface
LiquidCrystal_I2C lcd(0x3F, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);
void setup() {
// Kita set bit rate dari komunikasi serialnya 9600 bps
Serial.begin(9600);
// Banyaknya kolom yang dipakai 16. Dan barisnya
// sebanyak 2. Itu dari sananya.
lcd.begin(16, 2);
// Tuliskan pesannya ke LCD
lcd.print("Suhunya ini :");
Wire.begin(); // join i2c bus (address optional for master)
}
void loop() {
int alarm = 0;
char key = kpd.getKey();
//mengeset hasil pembacaan sensor LM 35
int value = analogRead(inPin);
/* mengubah hasil pembacaan sensor LM 35
ke dalam milivolt */
float millivolts = (value / 1024.0) * 5000;
// mengkonversi ke dalam Celcius
float celcius = millivolts / 10;
// Pindahkan kursor ke baris 2, kolom paling kiri
lcd.setCursor(0, 1);
// Tuliskan ke LCD!!
lcd.print(celcius); lcd.print(" C");
if(state == 1){
lcd.print(" MODE:M");
}else if(state == 0){
lcd.print(" MODE:A");
}
int out;
Wire.beginTransmission(4); // transmit to device #4
// int a = 3;
// Wire.write(a);
Serial.print("statek loop = ");
Serial.println(state);
if(key == '*'){
state = 0;
Serial.println(state);
}else if(key == '#') {
state = 1;
Serial.println(state);
}else if(key == '9'){
alarm = 9;
Serial.println(alarm);
}
if(state == 0){
if (celcius < 30.00) {
out=1;
} else if (celcius >= 30.00 && celcius <= 32.00) {
out=2;
} else if (celcius > 32.00) {
out=3;
}
}else if(state == 1){
if(key == '1'){
Serial.println("satu");
out=4;
}else if(key == '2'){
out=5;
Serial.println("dua");
} else if (key == '3') {
out=2;
Serial.print("tiga");
}
if(alarm == 9){
Wire.write(alarm);
}else{
Wire.write(out);
}
Wire.endTransmission();
//tunggu 1 detik
delay(1000);
}
}
/Slave
#include <Wire.h>
//define names for the 4 Digital pins On the Arduino 7,8,9,10
//These data pins link to 4 Relay board pins IN1, IN2, IN3, IN4
#define RELAY1 8
#define RELAY2 9
int valPIR = LOW;
int statePIR = LOW; // we start, assuming no motion detected
int inputPIR = 7; // choose the input pin (for PIR sensor)
int lampstate = 0; //kondisi lampu
int fanstate = 0; //kondisi kipas
int pinALARM = 13;
int statemove = 0;
int counter = 0;
void setup()
{
// Initialise the Arduino data pins for OUTPUT
pinMode(RELAY1, OUTPUT);
pinMode(RELAY2, OUTPUT);
pinMode(inputPIR, INPUT);
pinMode(pinALARM, OUTPUT);
Wire.begin(4); // join i2c bus with address #4
Wire.onReceive(receiveEvent); // register event
Serial.begin(9600); // start serial for output
}
void loop()
{
delay(100);
}
// function that executes whenever data is received from master
// this function is registered as an event, see setup()
void receiveEvent(int howMany)
{
int x = Wire.read(); // receive byte as an integer
Serial.print("X");
Serial.println(x);
if (x == 1 && lampstate == 0) { //lampu nyalain
digitalWrite(RELAY1,LOW);
digitalWrite(RELAY2,HIGH);
lampstate = 1;
} else if (x == 2 && lampstate == 1 || x ==2 && fanstate == 1) { //matiin lampu atau kipas
digitalWrite(RELAY1,HIGH);
lampstate = 0;
digitalWrite(RELAY2,HIGH);
fanstate = 0;
} else if (x == 3 && fanstate == 0) { //kipas nyalain
digitalWrite(RELAY1,HIGH);
digitalWrite(RELAY2,LOW);
fanstate = 1;
} else if (x == 4) { //lampu nyalain mode darurat
digitalWrite(RELAY1,LOW);
digitalWrite(RELAY2,HIGH);
lampstate = 1;
} else if (x == 5) { //kipas nyalain mode darurat
digitalWrite(RELAY1,HIGH);
digitalWrite(RELAY2,LOW);
fanstate = 1;
}
valPIR = digitalRead(inputPIR); // read input value
if(valPIR == HIGH && statePIR == LOW){
//kirim sinyal untuk menyalakan alarm
digitalWrite(pinALARM, HIGH);
statemove = 1;
statePIR = HIGH;
}
Serial.print("sensork = ");
Serial.println(x);
if (statemove = 1) {
counter++;
}
if (counter >= 30 || x == 9 ) {
statemove = 0;
counter = 0;
digitalWrite(pinALARM, LOW);
statePIR = LOW;
}
}
help me, please 
