How can i continue loop when some part of it crashes

obyilmaz · December 25, 2021, 1:50am

hi , i am on a project and i am using WIFI modules and send data to internet. but sometimes there was a connection issues and my whole codes stack in same line. What i want is, if there is a error just leave it and continue the loop.
i have 2 code blocks related to WIFI

in the void setup section. my code try to connect esp but when it couldn't i want to pass this part
in the void loop section. my code try to send data to internet. but when it couldn't i want to pass this part.

how could i do that? any ideas? my approach could be bad if you show me correct way i am very glad thank you.

i make bold the related parts


#include <Wire.h>
#include <FaBoLCD_PCF8574.h>
FaBoLCD_PCF8574 lcd;

#include <DHT.h>
#define DHTPIN 2 
#define DHTTYPE    DHT11 
DHT dht(DHTPIN, DHTTYPE);


//wifi eklentileri
#include <SoftwareSerial.h>
String agAdi="TURKSAT-KABLONET-70A3-2.4G";
String agSifresi="d12e9410";
int rxPin=10;
int txPin=11;
String ip= "184.106.153.149";
//float sicaklik, nem;
SoftwareSerial esp(rxPin,txPin);
unsigned long previousMillis3 = 0;
const long interval3 = 60000; 


#include<Servo.h>
Servo Myservo;

const int LED_RED=9; //Red LED
const int LED_GREEN=8; //Green LED
const int RELAY=12; //Lock Relay or motor
const int up_key=7;
const int down_key=6;

double T=20; //sensörden ölçülen anlık sıcaklık null olabilir
double T0=20;//anlık sıcaklık null değil
double T1=20; //son 60 (num readings)çlçüm ortalaması
double T2=20; // son 10(numreadings2) çlçüm ortalaması
int step1=10; //step size for inc
int pos=90;
double H;

int SetPoint=25;
unsigned long currentMillis=0;
unsigned long previousMillis = 0;        // will store last time LED was updated
const long interval = 1000;              //ortalama sıcaklık hesaplama süresi
unsigned long previousMillis2 = 0;        // will store last time LED was updated
const long interval2 = 10000;          //wait time before make new action



//ortalama sıcaklık için T1 hesaplama

const int numReadings = 60;
double readings[numReadings];      // array the readings from the analog input
int readIndex = 0;              // the index of the current reading                 
double average = 20;  
double total = numReadings*average;// the running total

//Ortalama sıcaklık için T2 hesaplama
const int numReadings2 = 10;
double readings2[numReadings2];      // 2. sayaç
int readIndex2 = 0;              // 2.sayaç
double average2 = 20; 
double total2 = numReadings2*average2;                  // 2.sayaç 
//test-----------------------
int a=0;

//test----------



void setup() {
  
pinMode(LED_RED,OUTPUT);
pinMode(LED_GREEN,OUTPUT);  
pinMode(RELAY,OUTPUT);  
pinMode(up_key,INPUT);
pinMode(down_key,INPUT);
digitalWrite(up_key,HIGH);
digitalWrite(down_key,HIGH);

Serial.begin(9600);

lcd.begin(16, 2);

// Print a message to the LCD.
lcd.print("oby");
lcd.setCursor(0, 1);
lcd.print("v5");

dht.begin();


digitalWrite(LED_GREEN,HIGH);  //Green LED Off
digitalWrite(LED_RED,LOW);     //Red LED On
digitalWrite(RELAY,LOW);       //Turn off Relay
Myservo.attach(5);

//ortalama sıcaklık
// initialize all the readings to 0:
  for (int thisReading = 0; thisReading < numReadings; thisReading++) {
    readings[thisReading] = 20;}
  for (int thisReading2 = 0; thisReading2 < numReadings2; thisReading2++) {
    readings2[thisReading2] = 20;}
------------------------------------------------
-----------------------------------------------
**//wifi setup --------------------------**
**Serial.println("Started");**
**  esp.begin(115200);                                          //ESP8266 ile seri haberleşmeyi başlatıyoruz.**
**  esp.println("AT");                                          //AT komutu ile modül kontrolünü yapıyoruz.**
**  Serial.println("AT Yollandı");**
**  while(!esp.find("OK")){                                     //Modül hazır olana kadar bekliyoruz.**
**    esp.println("AT");**
**    Serial.println("ESP8266 Bulunamadı.");**
**  }**
**  Serial.println("OK Komutu Alındı");**
**  esp.println("AT+CWMODE=1");                                 //ESP8266 modülünü client olarak ayarlıyoruz.**
**  while(!esp.find("OK")){                                     //Ayar yapılana kadar bekliyoruz.**
**    esp.println("AT+CWMODE=1");**
**    Serial.println("Ayar Yapılıyor....");**
**  }**
**  Serial.println("Client olarak ayarlandı");**
**  Serial.println("Aga Baglaniliyor...");**
**  esp.println("AT+CWJAP=\""+agAdi+"\",\""+agSifresi+"\"");    //Ağımıza bağlanıyoruz.**
**  while(!esp.find("OK"));                                     //Ağa bağlanana kadar bekliyoruz.**
**  Serial.println("Aga Baglandi.");**
**  lcd.setCursor(0, 1);**
**  lcd.print("ag ok!");**
------------------------------------------------
-----------------------------------------------

 delay(2000);

}

void Turnoff(){
 Myservo.write(0);
 delay(100);
  
   digitalWrite(RELAY,LOW);    //Turn off heater
   digitalWrite(LED_RED,LOW);
   digitalWrite(LED_GREEN,HIGH);  //Turn on Green LED

}

void Turnon(){


 Myservo.write(170);
 delay(100);
  
  digitalWrite(RELAY,HIGH);    //Turn on heater %100
  digitalWrite(LED_GREEN,LOW);
  digitalWrite(LED_RED,HIGH);  //Turn on RED LED  

}


void servopos(int position){
    Serial.print("servopos cagirildi---+++--+++---:");Serial.println(position);
    Myservo.write(position);
    delay(100);
    digitalWrite(RELAY,HIGH);    //Turn on heater %50
    digitalWrite(LED_GREEN,HIGH);
    digitalWrite(LED_RED,HIGH);  //Turn on RED LED 
    

}


void loop() {

//-------Test Section-----------
 
//   if(digitalRead(up_key)==1){
//      digitalWrite(LED_RED,HIGH);
//       digitalWrite(LED_GREEN,HIGH);
//     }
//   else{
//     digitalWrite(LED_RED,LOW);
//     digitalWrite(LED_GREEN,LOW);
//     }

//   if(digitalRead(down_key)==1){
//      digitalWrite(LED_GREEN,HIGH);
//     }
//   else{
//     digitalWrite(LED_GREEN,LOW);
//     }
    
//Servo test
// Myservo.write(a);
// delay(1000);
// if (a<180) a=a+20;
//dht lcd yazdırma
// float temp=dht.readTemperature();
// float hum=dht.readHumidity();
// lcd.setCursor(7,0);
// lcd.print(temp);
// lcd.setCursor(7,1);
// lcd.print(hum);
// Serial.println(temp);
// Serial.println(hum);
Serial.print("pos");Serial.println(pos);
Serial.print("T0");Serial.println(T0);
Serial.print("total");Serial.println(total);
Serial.print("T1");Serial.println(T1);
Serial.print("readings");
for (int i = 0; i < numReadings; i++) Serial.print(readings[i]);
// Serial.print("currentmilis:");Serial.println(currentMillis);
// Serial.print("cm-previousMilis T1 hesaplama:");Serial.println(currentMillis - previousMillis);
// Serial.print("cm-previousMilis2:");Serial.println(currentMillis - previousMillis2);
// Serial.print("cm-previousMilis3:");Serial.println(currentMillis - previousMillis3);
Serial.println("------------");

// test sonu------------------

//read temparature and chack is null
T=dht.readTemperature();
H=dht.readHumidity();
if(T<50 && T>-30) T0=T;

currentMillis = millis();

//Ortalama sıcaklık T1 array hesaplama
 if (currentMillis - previousMillis >= interval) 
 {
  Serial.print("calc_t1 cagirildi read index:");Serial.println(readIndex);
  previousMillis = currentMillis;  
  total = total - readings[readIndex];
  readings[readIndex] = T0;
  total = total + readings[readIndex];
  readIndex = readIndex + 1;
  if (readIndex == (numReadings)) 
    {
      readIndex = 0;
    }
  T1 = float(total) / float(numReadings);
//ortalama sıcaklık için t2 hesaplama. anlık karar verdiği için hesaplandı
  Serial.print("calc_t2 cagirildi read index:");Serial.println(readIndex2);
  previousMillis = currentMillis;  
  total2 = total2 - readings2[readIndex2];
  readings2[readIndex2] = T0;
  total2 = total2 + readings2[readIndex2];
  readIndex2 = readIndex2 + 1;
  if (readIndex2 == (numReadings2)) 
    {
      readIndex2 = 0;
    }
  T2 = float(total2) / float(numReadings2);


  }
 
 
  //Get user input for setpoints  
  if(digitalRead(down_key)==1)
  {
    if(SetPoint>15)
    {
      SetPoint--;    
    }
  }
  if(digitalRead(up_key)==1)
  {
    if(SetPoint<30)
    {
      SetPoint++;
    }
  }


 //Display Set point on LCD/ lcd values
  lcd.setCursor(0,0);
  lcd.print("oda:");    
  lcd.setCursor(4,0);
  lcd.print(T0); 
  lcd.setCursor(10,0);
  lcd.print(T2); 
  lcd.setCursor(15,0);
  if (T2>T1+0.3) lcd.print("+");
  else if (T1>T2+0.3) lcd.print("-");
  else lcd.print("=");

  lcd.setCursor(0,1);
  lcd.print("set:");
  lcd.print(SetPoint);
  lcd.print(" T1:");
  lcd.setCursor(11,1);
  lcd.print(T1);


//Check T2 is in limit
if(T2 > (SetPoint+4)) 
  {
  Turnoff();
  }
else if (T2<(SetPoint-4))
  {
  Turnon();
  }


//AKILLI KARŞILAŞTIRMA
//eğer oda istenenden biraz sıcaksa

if ((T2>(SetPoint)) && (currentMillis - previousMillis2 >= interval2) )
  {
    //ve oda ısınıyorsa
    if ((T1<T2+0.3)&&(pos>step1)) //+0.3 amacı -eşit olsa bile soğutmaya çalış
    {     
        pos=(pos-step1);   
        Serial.print("biraz sicak");Serial.println(pos);
        servopos(pos) ;

    }
    //ve oda soğuyorsa

    previousMillis2 = currentMillis;
  }

  //eğer oda istenenden biraz soğuksa
if ( (T2<SetPoint) && (currentMillis - previousMillis2 >= interval2) )
  {
   //VE ODA SOĞUYORSA
    if ((T1>T2-0.3)&&(pos<170))
    {
      pos = (pos+step1);
      Serial.print("biraz soguk");Serial.println(pos);
      servopos(pos);
    }
    
    previousMillis2 = currentMillis;
  }
------------------------------------------------
-----------------------------------------------
**//wifi setup veri gönderme**
**if (currentMillis - previousMillis3 >= interval3)**
**{**
**  esp.println("AT+CIPSTART=\"TCP\",\""+ip+"\",80");           //Thingspeak'e bağlanıyoruz.**
**  if(esp.find("Error")){                                      //Bağlantı hatası kontrolü yapıyoruz.**
**    Serial.println("AT+CIPSTART Error");**
**  }**
**  //DHT11.read(dht11Pin);**

**  //orjinal kod bu ama T0 ile değiştirildi**
**  //sicaklik = (float)dht.readTemperature();; **
**  //nem = (float)DHT11.humidity;**
**  String veri = "GET https://api.thingspeak.com/update?api_key=VAWRNI7PQE6P7RJN";   //Thingspeak komutu. Key kısmına kendi api keyimizi yazıyoruz.                                   //Göndereceğimiz sıcaklık değişkeni**
**  veri += "&field1=";**
**  veri += String(T0);**
**  veri += "&field2=";**
**  veri += String(H);                                        //Göndereceğimiz nem değişkeni**
**  veri += "\r\n\r\n"; **
**  esp.print("AT+CIPSEND=");                                   //ESP'ye göndereceğimiz veri uzunluğunu veriyoruz.**
**  esp.println(veri.length()+2);**
**  delay(2000);**
**  if(esp.find(">")){                                          //ESP8266 hazır olduğunda içindeki komutlar çalışıyor.**
**    esp.print(veri);                                          //Veriyi gönderiyoruz.**
**    Serial.println(veri);**
**    Serial.println("Veri gonderildi.");**
**    delay(1000);**
**  }**
**  Serial.println("Baglantı Kapatildi.");**
**  esp.println("AT+CIPCLOSE");                                //Bağlantıyı kapatıyoruz**
**  previousMillis3 = currentMillis;**


}
//------------------------------------------------

------------------------------------------------
-----------------------------------------------



  delay(100); //Update at every 
  


}

guix · December 25, 2021, 2:31am

Hello

Maybe a simple solution is to add a timeout. For example if 10 seconds have passed without receiving a reply from esp, then set an error flag and break out of the while loops

Example:

...
esp.println("AT");
uint32_t timer_start = millis();
bool error = false;
while(!esp.find("OK"))
{
  if ( millis() - timer_start >= 10000UL )
  {
    error = true;
    Serial.println("Timeout");
    break;
  }
  esp.println("AT");
  Serial.println("ESP8266 Bulunamadı.");
}

if ( error )
{
   ...

But, I'm not sure if that is a good idea to spam esp.println inside these while loops

obyilmaz · December 25, 2021, 11:35pm

i think it will work but i need to check them afterawhile. and moreover i need to know is it succesfull ornot. so i added some code to yours. what do u think?

unsigned long previoustime=0;
unsigned long currentMillis=0;

void setup(){
....
}
void wifisetup(){

esp.println("AT");
uint32_t timer_start = millis();
bool error = false;
while(!esp.find("OK"))
{
  if ( millis() - timer_start >= 10000UL )
  {
    error = true;
    Serial.println("Timeout");
    break;
  }
  esp.println("AT");
  Serial.println("ESP8266 Bulunamadı.");
if(esp.find("OK")) error=false;;
}

void wifidatasend(data){
   -same code vith wifi setup-

}

void loop(){
currenttime=milis()
if(error && currenttime-previoustime>someinterval){

    wifisetup()
    previoustime=currenttime
}

if (error2&& currenttime-previoustime>someinterval){
    wifidatasend(somedata)
    previoustime=currenttime

}

anon57585045 · December 26, 2021, 12:57am

If it is possible, you should always avoid using the clumsy AT command interface, instead program the ESP to do the whole job, or with a customized sketch that performs the wireless functions that you need, but presents a custom, streamlined interface to the main processor that is running everything else.

If not this time, maybe the next?

obyilmaz · December 26, 2021, 2:42am

i am not understand all theese wifi code %100 percent. so i dont understand what u mean if you write an alternative path i will investegate it. what is the disadvantage of my code and how can i change it ? thank you

guix · December 26, 2021, 3:21am

You can program the ESP like an arduino : Installing — ESP8266 Arduino Core 3.1.1-15-gbadb407b documentation

obyilmaz · December 26, 2021, 10:20pm

why do i need it?

anon57585045 · December 28, 2021, 2:06am

Isn't the fact that you're having a tough time making it work, sufficient reason? But it's your project, your time, your choice.

obyilmaz · January 6, 2022, 4:36pm

sorry for my bad language. i mean i didnt get the point of programing esp instead of arduino!

anon57585045 · January 8, 2022, 3:07pm

You need only one board or processor (smaller, simpler)
You don't have to fool around with a serial interface (sometimes level shifters)
You don't need the AT command set, which is intended mainly for testing, not production use.
The code can run faster, more efficiently.
You use less power
Maybe more reasons....

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