Two different components, two different baud rates

Hi guys once again....

Now I have a very interesting problem.

So.

I have MLX90614-sensor and PCF8523-RTC-clock.

I´m trying to connect these together, but...

MLX90614 uses 9600 baud rate.
PCF8523 uses 57600 baud rate.

So.

How can I code these working together in serial monitor?

Both of them works fine when I use only one component and comment out other component codes, but when I put those together, I don´t know what to do.

In the following code, there are now two void setups because I´m so f... lost now guys :smiley:

There is my code:


        // Alkaa MLX90614-sensorin määritys
        #include <Adafruit_MLX90614.h>
        Adafruit_MLX90614 mlx = Adafruit_MLX90614();
        void setup() {
        Serial.begin(9600);
        while (!Serial);
        if (!mlx.begin()) {
        Serial.println("Yhdistys MLX sensoriin ei onnistunut. Tarkista kytkentä savun halvettya.");
        while (1);
        };
        Serial.println("================================================");
        }
        // Tähän loppuu sensorin määritys 






  // Tästä alkaa RTC-kellon määritys
  #include "RTClib.h"
  RTC_PCF8523 rtc;  

  char daysOfTheWeek[7][12] = {"Sunnunta", "Maanantai", "Tiistai", "Keskiviikko", "Torstai", "Perjantai", "Lauantai"};      // Määritetään viikonpäivät

  void setup () {
  Serial.begin(57600);   // HOX! Muista vaihtaa baud sarjamonitorista arvoon 57600!

  #ifndef ESP8266
  while (!Serial); // Tarkistetaan USB-yhteys
  #endif

  if (! rtc.begin()) {
  Serial.println("RTC-kello hukassa, tarkista kytkentä!");
  Serial.flush();
  while (1) delay(10);
  }

  if (! rtc.initialized() || rtc.lostPower()) {
  Serial.println("RTC ei ole asennettu, asetetaan seuraavaksi aika ja päivämäärä!");
  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));   // Päivämäärän ja kellonajan määritys, jos RTC:stä on katkennut virta, tai patteri on irrotettu (muisti hävinnyt)
                                                      // Päivämäärä ja kellonaika asetetaan muodossa (2021,12,22, 14,53,32)
  }
  rtc.start();  // Tähän asti päästyä RTC on asentunut ja toimii oikein, joten voidaan aloittaa varsinainen ohjelma

  float drift = 43; // Kalibroi sekunnit 
  float period_sec = (7 * 86400);  // (86400 = sekunnit per päivä 1:  7 päivää = (7 * 86400) sekuntia )
  float deviation_ppm = (drift / period_sec * 1000000); //  Sekunnin poikkeama miljoonasosina
  float drift_unit = 4.34; // OFFSET-toiminto PCF8523_TwoHours-käytössä
  int offset = round(deviation_ppm / drift_unit);
 

  Serial.print("Offset is "); Serial.println(offset); // Offsetin arvo
  }
  // Tähän loppuu RTC-kellon määritys







    
        void loop () {
        DateTime now = rtc.now();
        
        Serial.print("Paivamaara: ");
        (Serial.print(now.year() , DEC )) ;
        Serial.print("-");
        (Serial.print(now.month(), DEC )) ;
        Serial.print("-");
        (Serial.print(now.day(), DEC));
        Serial.print("\n");


        Serial.print("Kellonaika: ");
        (Serial.print(now.hour(), DEC)) ; 
        Serial.print(":");
        (Serial.print(now.minute(), DEC)) ; 
        Serial.print(":");
        (Serial.print(now.second(), DEC));
        Serial.print("\n");
        
       
        Serial.print("Lampotila: \n");
        Serial.print("Ymparisto = "); Serial.print(mlx.readAmbientTempC());
        Serial.print(" \xC2\xB0"); Serial.print("C\tKohde = ");
        Serial.print(mlx.readObjectTempC()); Serial.print(" \xC2\xB0");
        Serial.println("C");Serial.print("            ");Serial.print(mlx.readAmbientTempF());
        Serial.print(" \xC2\xB0");Serial.print("F\t        ");
        Serial.print(mlx.readObjectTempF());Serial.print(" \xC2\xB0");
        Serial.println("F");
        Serial.println();
        
        if(mlx.readObjectTempC() > -20){
        tone(9, 200, 300);
        } 
        if(mlx.readObjectTempC() > -10){
        tone(9, 200, 300);
        } 
        if(mlx.readObjectTempC() > 0){
        tone(9, 200, 300);
        } 
        if(mlx.readObjectTempC() > 10){
        tone(9, 230, 300);
        }
        if(mlx.readObjectTempC() > 25){
        tone(9, 262, 300);
        }
        if(mlx.readObjectTempC() > 26){
        tone(9, 294, 300);
        }
        if(mlx.readObjectTempC() > 27){
        tone(9, 330, 300);
        }
        if(mlx.readObjectTempC() > 28){
        tone(9, 349, 300);
        }
        if(mlx.readObjectTempC() > 60){
        tone(9, 392, 300);
        }
        if(mlx.readObjectTempC() > 70){
        tone(9, 200, 300);
        }  
        

  
        Serial.print("\n");
        delay(1000); }

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The baud rate set in Serial.begin(9600) it's just for the pc communication.
What's the problem?
If you need 2 different serial comunication, you can use softwareSerial library

Oh I open this up.

So.

What I´m trying to do is to show measuring temperature (MLX90614) with time and date (PCF8523) in Serial Monitor, because when I get this working, I can move to the next step, which is to show this data in 2,8" TFT screen.

I think you are taking 2 different code and paste them together.
You don't have to care about communication between Arduino (or ESP) board and sensor/rtc board because it's handled by their library.
The serial rate is just a paremeter for the communication between pc and Arduino board

Ok so stupid question, how do I paste codes?

void loop () {
        DateTime now = rtc.now();
        
        Serial.print("Paivamaara: ");
        (Serial.print(now.year() , DEC )) ;
        Serial.print("-");
        (Serial.print(now.month(), DEC )) ;
        Serial.print("-");
        (Serial.print(now.day(), DEC));
        Serial.print("\n");


        Serial.print("Kellonaika: ");
        (Serial.print(now.hour(), DEC)) ; 
        Serial.print(":");
        (Serial.print(now.minute(), DEC)) ; 
        Serial.print(":");
        (Serial.print(now.second(), DEC));
        Serial.print("\n");
        
       
        Serial.print("Lampotila: \n");
        Serial.print("Ymparisto = "); Serial.print(mlx.readAmbientTempC());
        Serial.print(" \xC2\xB0"); Serial.print("C\tKohde = ");
        Serial.print(mlx.readObjectTempC()); Serial.print(" \xC2\xB0");
        Serial.println("C");Serial.print("            ");Serial.print(mlx.readAmbientTempF());
        Serial.print(" \xC2\xB0");Serial.print("F\t        ");
        Serial.print(mlx.readObjectTempF());Serial.print(" \xC2\xB0");
        Serial.println("F");
        Serial.println();
        
        if(mlx.readObjectTempC() > -20){
        tone(9, 200, 300);
        } 
        if(mlx.readObjectTempC() > -10){
        tone(9, 200, 300);
        } 
        if(mlx.readObjectTempC() > 0){
        tone(9, 200, 300);
        } 
        if(mlx.readObjectTempC() > 10){
        tone(9, 230, 300);
        }
        if(mlx.readObjectTempC() > 25){
        tone(9, 262, 300);
        }
        if(mlx.readObjectTempC() > 26){
        tone(9, 294, 300);
        }
        if(mlx.readObjectTempC() > 27){
        tone(9, 330, 300);
        }
        if(mlx.readObjectTempC() > 28){
        tone(9, 349, 300);
        }
        if(mlx.readObjectTempC() > 60){
        tone(9, 392, 300);
        }
        if(mlx.readObjectTempC() > 70){
        tone(9, 200, 300);
        }  

In the loop I need to use both components :smiley:

And you can do it.
Have you already try the code?

yup, "redefinition of ´void setup()´

Indeed you have 2 SETUP routine.

yup, that is exactly my problem, how do I unite these?

Just copy one inside the other.

void setup () {
        Serial.begin(9600);
        while (!Serial);
        if (!mlx.begin()) {
        Serial.println("Yhdistys MLX sensoriin ei onnistunut. Tarkista kytkentä savun halvettya.");
        while (1);
        };
        Serial.println("================================================");
if (! rtc.begin()) {
  Serial.println("RTC-kello hukassa, tarkista kytkentä!");
  Serial.flush();
  while (1) delay(10);
  }

  if (! rtc.initialized() || rtc.lostPower()) {
  Serial.println("RTC ei ole asennettu, asetetaan seuraavaksi aika ja päivämäärä!");
  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));   // Päivämäärän ja kellonajan määritys, jos RTC:stä on katkennut virta, tai patteri on irrotettu (muisti hävinnyt)
                                                      // Päivämäärä ja kellonaika asetetaan muodossa (2021,12,22, 14,53,32)
  }
  rtc.start();  // Tähän asti päästyä RTC on asentunut ja toimii oikein, joten voidaan aloittaa varsinainen ohjelma

  float drift = 43; // Kalibroi sekunnit 
  float period_sec = (7 * 86400);  // (86400 = sekunnit per päivä 1:  7 päivää = (7 * 86400) sekuntia )
  float deviation_ppm = (drift / period_sec * 1000000); //  Sekunnin poikkeama miljoonasosina
  float drift_unit = 4.34; // OFFSET-toiminto PCF8523_TwoHours-käytössä
  int offset = round(deviation_ppm / drift_unit);
 

  Serial.print("Offset is "); Serial.println(offset); // Offsetin arvo
  }

Oh, now I feel stupid...

Is it working?

It doesn´t give an error anymore, but it doesn´t show anything in serial monitor :yawning_face:

What do you mean with "does't show anything"?
It's completely blank or show strage characters?

There was typing error, my bad :rofl:

Now I have next problem.

I have a Mcufriend Blue Shield (2.8" touch screen) with SD-card, and when I´m trying to write to card, it doesn´t work right...

//Ohjelma, jolla voi lukea ja kirjoittaa dataa SD-kortilta.

#include <SD.h>
#include <Adafruit_GFX.h>
#include <MCUFRIEND_kbv.h>
MCUFRIEND_kbv tft;

#include <Fonts/FreeSans9pt7b.h>
#include <Fonts/FreeSans12pt7b.h>
#include <Fonts/FreeSerif12pt7b.h>

#include <FreeDefaultFonts.h>

#define BLACK   0x0000
#define RED     0xF800
#define GREEN   0x07E0
#define WHITE   0xFFFF
#define GREY    0x8410
#define BLUE    0x001F
#define CYAN    0x07FF
#define YELLOW  0xFFE0
#define ORANGE  0xFBE0
#define MAGENTA 0xF81F
#define BROWN   0x79E0
#define PINK    0xF81F


File myFile;

const int chipSelect = 4;


void setup()
{
  Serial.begin(9600);
  uint16_t ID = tft.readID();
  Serial.print("ID loydetty = 0x");
  Serial.println(ID, HEX);
  tft.begin(ID);
  tft.setRotation(1); //näytön suunnan määritys, 0 = pysty, 1 = vaaka, 2 = ylösalaisin, 3 = vaaka toisin päin
  while (!Serial) {
    
  }


  tft.print("Initializing SD card...");
 
  // SS pin = 10 Arduino unossa ja megassa SS pin = 53 (output)
  // muuten SD kirjasto ei toimi.
   pinMode(SS, OUTPUT);
   
  if (!SD.begin(chipSelect)) {
    tft.println("initialization failed!");
    return;
  }
  tft.println("initialization done.");
  // avaa tiedoston. Ohjelmalla voi avata vain yhden tiedoston kerralla.,
  
  myFile = SD.open("test3.txt", FILE_WRITE);
  
  // jos, tiedosto toimii oikein ohjelma tulostaa:
  if (myFile) {
    tft.print("Writing to test3.txt...");
    myFile.println("sd kortti");
    myFile.flush();
    
  // tiedosto sulkeutuu.
    myFile.close();
    tft.println("done.");
  } else {
    // jos, tiedosto ei aukea ohjelma tulostaa error.
    tft.println("error opening test3.txt");
  }
  
  // ohjelma aukeaa lukemista varten.:
  myFile = SD.open("test3.txt");
  if (myFile) {
    Serial.println("test3.txt:");
    tft.println("test3.txt:");
    
    while (myFile.available()) {  // ohjelma lukee tiedoston, ja kirjoittaa sen sarjamonitoriin:
      Serial.write(myFile.read());
      tft.fillScreen(BLACK);
      tft.setTextColor(WHITE);
      tft.setTextSize(2);
      tft.setCursor(10, 20);
      tft.print(myFile.read());
      myFile.flush();
      
    }
    // close the file:
    myFile.close();
  } else {
    // jos, tiedosto ei aukea ohjelma tulostaa error:
    tft.println("error opening test3.txt");
  }
}


void loop()
{
  
}

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