[tabazka]

Oto moje skatche...

Dla MASTER:

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 20, 4);
#include <OneWire.h>
#include <DallasTemperature.h>
//=====================================================================================================================================
#include "Arduino.h"
// Library to allow a Serial port on arbitrary pins
#include <SoftwareSerial.h>
// These are the pins we'll be talking to the RS485 device on
#define RS485rx 2 // RS485 Receive pin
#define RS485Tx 3 // RS485 Transmit pin
#define RS485Transmit HIGH
#define RS485Receive LOW
#define baudRate 115200
SoftwareSerial RS485(RS485rx, RS485Tx);
int buttonState = 0;

//=====================================================================================================================================

// Data wire is plugged into port 2 on the Arduino
#define ONE_WIRE_BUS 4

// Setup a oneWire instance to communicate with any OneWire devices
OneWire oneWire(ONE_WIRE_BUS);

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

// Addresses of 3 DS18B20s
uint8_t sensor1[8] = { 0xX, 0xX, 0xX, 0xX, 0xX, 0xX, 0xX, 0xX };
uint8_t sensor2[8] = { 0xX, 0xX, 0xX, 0xX, 0xX, 0xX, 0xX, 0xX };
uint8_t sensor3[8] = { 0xX, 0xX, 0xX, 0xX, 0xX, 0xX, 0xX, 0xX };
float tempC1 = 0;
float tempC2 = 0;
float tempC3 = 0;
float times =10000;


void setup()
{
lcd.init();
lcd.begin(20, 4);
lcd.backlight();
Wire.begin();
sensors.begin();
lcd.setCursor(4, 0);
lcd.print("TEMPERATURA");
Serial.begin(9600);  
sensors.setResolution(sensor1, 12);
sensors.setResolution(sensor2, 12);
sensors.setResolution(sensor3, 12);

 pinMode(5, OUTPUT);
 pinMode(A0, INPUT);
 
 sensors.requestTemperatures();
 float tempC1 = sensors.getTempC(sensor1);
 float tempC2 = sensors.getTempC(sensor2);
 float tempC3 = sensors.getTempC(sensor3);
 lcd.setCursor(1, 1);
  lcd.print("Wewnatrz: ");
  lcd.setCursor(11, 1);
  lcd.print(tempC1);
  lcd.setCursor(1, 2);
  lcd.print("Zewnatrz: ");
  lcd.setCursor(11, 2);
  lcd.print(tempC2);
  lcd.setCursor(1, 3);
  lcd.print("Sensor 3: ");
  lcd.setCursor(11, 3);
  lcd.print(tempC3);

 

//=====================================================================================================================================
 RS485.begin(baudRate);
//=====================================================================================================================================

}

void loop()
{
 
  buttonState = analogRead(A0);
  if (buttonState >= 1000)
  {
    digitalWrite(5, HIGH);
  }
  if (buttonState <= 1000)
  {
    digitalWrite(5, LOW);
  }
 
static float count = 0;
count++; if (count==times)
{
sensors.requestTemperatures();
float tempC1 = sensors.getTempC(sensor1);
float tempC2 = sensors.getTempC(sensor2);
float tempC3 = sensors.getTempC(sensor3);
float rxtempC1;
float rxtempC2;
float rxtempC3;

  lcd.setCursor(11, 1);
  lcd.print(tempC1);
  lcd.setCursor(11, 2);
  lcd.print(tempC2);
  lcd.setCursor(11, 3);
  lcd.print(tempC3);

//=====================================================================================================================================

Serial.print("Sending:");Serial.println(sensors.getTempC(sensor3));
 RS485.write(sensors.getTempC(sensor3));
 delay(1);

 if (RS485.available())
 {
rxtempC3 = RS485.read();
 // Display it on the Serial Monitor as a char (not an integer value)
 Serial.print(" Got back:"); Serial.println(rxtempC3);
 }
 count =0;
}
//=====================================================================================================================================
}


Oraz SLAVE:


#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 20, 4);
int tempC1= 0;
int tempC2= 0;
int tempC3= 0;
//=====================================================================================================================================
#include "Arduino.h"
// Library to allow a Serial port on arbitrary pins
#include <SoftwareSerial.h>
// These are the pins we'll be talking to the RS485 device on
#define RS485rx 2 // RS485 Receive pin
#define RS485Tx 3 // RS485 Transmit pin
#define RS485Transmit HIGH
#define RS485Receive LOW
#define baudRate 115200
// Define the RS485 object
SoftwareSerial RS485(RS485rx, RS485Tx);
float rxtempC1;
float rxtempC2;
float rxtempC3;
//=====================================================================================================================================

void setup()
{
lcd.init();
lcd.begin(20, 2);
lcd.backlight();
Wire.begin();
Serial.begin(9600);  


//=====================================================================================================================================
RS485.begin(baudRate);
//=====================================================================================================================================

}

void loop()
{
//=====================================================================================================================================
// Is there something on the serial pin?
 if (RS485.available())
 {
 float rxtempC3 = RS485.read();
 Serial.print("Received:");Serial.println(rxtempC3);
 lcd.setCursor(1, 0);
  lcd.print(rxtempC3);
  lcd.print("   ");
 delay(10);
 // Send back a modified value
 RS485.write(rxtempC3);
 }
//=====================================================================================================================================
}


Monitor portu dla MASTER:
Sending:19.69


Got back:19.00


Sending:19.69


Got back:19.00


Sending:19.69

Got back:19.00

Monitur portu dla SLAVE:
Received:19.00


Received:19.00


Received:19.00


Received:19.00

Received:19.00