Exception shown in Serial Monitor when running sketch on ESP8266 board

[iceguy2022]

#include "DHT.h" 
#define DHTPIN D1
#define DHTTYPE DHT11 
DHT dht(DHTPIN, DHTTYPE);
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2); 

#include "UbidotsMicroESP8266.h"
#define TOKEN  "TOKEN"  // Put here your Ubidots TOKEN
#define WIFISSID "SSID"
#define PASSWORD "PASSWORD"
int vs = A0;
int vs1 = D0;
int percentValue = 0;
Ubidots client(TOKEN);
unsigned long lastMillis = 0;

void setup(){
    Serial.begin(115200);
    dht.begin();
    delay(10);
    client.wifiConnection(WIFISSID, PASSWORD);
    pinMode(vs ,INPUT);
    pinMode(vs1 ,INPUT);
    Wire.begin(2,0);
    lcd.init();
    lcd.backlight();
    lcd.home();
}
void loop(){

    if (millis() - lastMillis > 10000) {  ///every 10S
    
      

      float humedad = dht.readHumidity();
      float temperatura = dht.readTemperature();
      float data      = analogRead(vs);
      float data1      = digitalRead(vs1);
      percentValue = map(data, 1023, 200, 0, 100);
            lastMillis = millis();
            client.add("humrel", humedad);
            client.add("temperature", temperatura);
            client.add("soil", percentValue);
             client.add("LDR", data1);
            client.sendAll(true);
            lcd.clear();
            lcd.setCursor(0,0);
            lcd.print("H:"); lcd.print(humedad); lcd.print("% S:"); lcd.print(percentValue); lcd.print("%");
            lcd.setCursor(0,1);
            lcd.print("T:"); lcd.print(temperatura); lcd.print("C L:"); lcd.print(data1); lcd.print("%");   
            delay(500);

            
            }

 
   
}

[gcjr]

fix what problem?

[iceguy2022]

i think my esp resets every time and shows this

[iceguy2022]

[gcjr]

looks ubidots is some variant of MQTT.

i suggest you comment/#ifdef out use of your client and see if that is the cause

or maybe it's because you attempt to use the connection, "client", before it successfully connects.

with standard WiFI routines, after attempting to connect to WiFI

WiFi.begin (ssid, pass);

the code waits for the connection to complete

    if (WL_CONNECTED != WiFi.status ())  {
        printf (" not connected\n");
        return false;
   }

[StefanL38]

If you install the exception-decoder like described here

Debugging Arduino Errors with the ESP8266 Exception Decoder

the exception-decoder will guide to to that line of code where the exception occurs

best regards Stefan

[iceguy2022]

@StefanL38

If you install the exception-decoder like described here
Debugging Arduino Errors with the ESP8266 Exception Decoder

the exception-decoder will guide to to that line of code where the exception occurs

best regards Stefan

i followed the tutorial but it doesnt show in arduino tools

[StefanL38]

@iceguy2022

i followed the tutorial but it doesnt show in arduino tools

Which IDE-version are you using?

restart the arduino IDE.
and look again

[iceguy2022]

sorry guys if i am bothoring you with questions but i really dont know much of programming and i do a lot of mistakes

[iceguy2022]

1.8.18

[StefanL38]

@iceguy2022

sorry guys if i am bothoring you with questions but i really dont know much of programming and i do a lot of mistakes

You are welcome. And making mistakes is normal. As long as you show some own effort and answer questions that users post you will receive continious support.
There are threads that are 500 posts long and still growing.

best regards Stefan

[Deva_Rishi]

Can you show us how you have everything connected.

Somehow the I2C pins on an ESP are D1 & D2, but you have defined the DHT pin as D1, Then you go for sw I2C but that may not work as expected. I'm not sure i never use I2C

[iceguy2022]

@gcjr

if (WL_CONNECTED != WiFi.status ())  {
        printf (" not connected\n");
        return false;
   }

idk it says Arduino

sensor_update:34:16: error: return-statement with a value, in function returning 'void' [-fpermissive]

34 | return false;

  |                ^~~~~

exit status 1

return-statement with a value, in function returning 'void' [-fpermissive]

[gcjr]

@iceguy2022

return-statement with a value, in function returning 'void' [-fpermissive]

the function you put this in returns a void.

you probably put this after the begin(). it shouldn't return. make it a while loop

[StefanL38]

The way that you communicate in this forum is non-optimal and somehow uneffective.

You should take 20 minutes of your own freetime to read this.
The result of taking the advice to your heart will be a faster finished project:

How to get the best out of this forum

See also FAQ - Arduino Forum for general rules on forum behaviour and etiquette. Hello, Welcome to the Arduino Forum. This guide explains how to get the best out of this forum. Please read and follow the instructions below. Being new here you might think this is having rules for the sake of rules, but that is not the case. If you don’t follow the guidelines all that happens is there is a long exchange of posts while we try to get you to tell us what we need in order to help you, which is fru…

best regards Stefan

[runaway_pancake]

At the end of your millis()-based if( ) routine, you have "delay(500);" ─ and that will hose the deal.

[gcjr]

@iceguy2022

void setup(){
    Serial.begin(115200);
    dht.begin();
    delay(10);
    client.wifiConnection(WIFISSID, PASSWORD);
    ...
}

change above to

void setup(){
    Serial.begin(115200);
    dht.begin();
    delay(10);
    client.wifiConnection(WIFISSID, PASSWORD);
    while(WL_CONNECTED != WiFi.status ())  {
        printf (" not connected\n");
        delay (1000);
    }
    ...
}

[iceguy2022]

Can someone help me bc i found the mistakes with exception decoder but i dont know how to fix the lines bc i am bad at programmig

``

THIS IS THE CODE THAT NEEDS TO BE FIXED
#include "DHT.h"
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include "UbidotsMicroESP8266.h"

#define DHTPIN D1
#define DHTTYPE DHT11
#define TOKEN "TOKEN" // Put here your Ubidots TOKEN
#define WIFISSID "SSID"
#define PASSWORD "PASSWORD"

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27,16,2);
Ubidots client(TOKEN);
unsigned long lastMillis = 0;
int vs = A0;
int vs1 = D0;
int percentValue = 0;

void setup(){
  Serial.begin(115200);
  dht.begin();
  client.wifiConnection(WIFISSID, PASSWORD);
  pinMode(vs, INPUT);
  pinMode(vs1, INPUT);
  Wire.begin(2,0);
  lcd.init();
  lcd.backlight();
  lcd.home();
}

void loop(){
  if (millis() - lastMillis > 10000) { ///every 10S
    float humedad = dht.readHumidity();
    float temperatura = dht.readTemperature();
    float data = analogRead(vs);
    float data1 = digitalRead(vs1);
    percentValue = map(data, 0, 1023, 0, 100); // Fixed the mapping of the analogRead value
    lastMillis = millis();
    client.add("humrel", humedad);
    client.add("temperature", temperatura);
    client.add("soil", percentValue);
    client.add("LDR", data1);
    client.sendAll(true);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("H:"); lcd.print(humedad); lcd.print("% S:"); lcd.print(percentValue); lcd.print("%");
    lcd.setCursor(0,1);
    lcd.print("T:"); lcd.print(temperatura); lcd.print("C L:"); lcd.print(data1); lcd.print("%");
    delay(500);
  }

THIS ARE THE RESULTS OF EXCEPTION DECODER.CAN SOMEONE HELP ME FIX THE CODE

}`Exception 0: Illegal instruction
PC: 0x40201d8c
EXCVADDR: 0x00000000

Decoding stack results
0x402012e3: DHT::begin(unsigned char) at C:\Users\dejvi\Documents\Arduino\libraries\DHT-sensor-library-master\DHT.cpp line 69
0x40201072: setup() at C:\Users\dejvi\Desktop\sensor_update/sensor_update.ino line 24
0x40204d9c: loop_wrapper() at C:\Users\dejvi\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.0.0\cores\esp8266\core_esp8266_main.cpp line 198
`

[UKHeliBob]

Please do not post pictures of code or error messages

Please follow the advice given in the link below when posting code, in particular the section entitled 'Posting code and common code problems'

Use code tags (the < CODE/ > icon above the compose window) to make it easier to read and copy for examination

How to get the best out of this forum

See also FAQ - Arduino Forum for general rules on forum behaviour and etiquette. Hello, Welcome to the Arduino Forum. This guide explains how to get the best out of this forum. Please read and follow the instructions below. Being new here you might think this is having rules for the sake of rules, but that is not the case. If you don’t follow the guidelines all that happens is there is a long exchange of posts while we try to get you to tell us what we need in order to help you, which is fru…

[iceguy2022]

thank you i am gonna fix it now