Project just stopped communicating with Console or App

Solved
1

My project just suddenly stopped working. Thinking I might have a bad ESP-32, I loaded a new one with my code. It still would not communicate. However the original processor and the new one, both functioned correctly with a different sketch loaded. I can’t seem to figure this one out. It used to work flawlessly.

#define BLYNK_TEMPLATE_ID "TMPL2c----------"
#define BLYNK_TEMPLATE_NAME "TEMPHUMECAR1"
// 09 IMPALA
#include <Arduino.h>
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>
#include <WiFi.h>
#include <WiFiMulti.h>
#include <BlynkSimpleEsp32.h>
#include <Update.h>
#include <HTTPClient.h>

#define BLYNK_AUTH_TOKEN "----------------------------------------"

#define BLYNK_PRINT Serial
#define BLYNK_FIRMWARE_VERSION        "0.1.0"
#define USE_ESP32_DEV_MODULE

#define DHTTYPE DHT11
#define DHTPIN 27  //Sensor Green
#define BattIn 32
#define Starter 25

DHT dht(DHTPIN, DHTTYPE);

WiFiMulti wifiMulti;

char auth[] = BLYNK_AUTH_TOKEN;
String ssid = "yourNetwork";


float Mintemp = 110;
float Maxtemp = 0;
int Hyst = 200; //rain sensor hysteresis setting
int humidHyst = 5; // Humidity sensor Hysteresis
int ct; // counter variable
int ct1;
int ctAvg1;
float Vcc1;
float Vout1;
float Vin1;
float CorrectionFactor1=1.06;
float Vtot1;
float BATTIN;
float BATT1;
float BATTAVG1;
float Vavg1;
int Smoother=10;
int ALRM1;
int R1 = 67400; //volt div resistor
int R2 = 16530; //volt div resistor
int Div = 4095;

float humeCal = 1.0; // Humidity sensor calibration offset multiplier
float tempF = 0;
float tempCal = -9.5;
float tempSet = 0;
float hif;

// float humid =65;
// float tempSet = 50; //set temprature threshold in F

int ReBoot  = 0;
int Booting = 0;
int START = 0;
int iled=0;
int dur=750; // delay in Ms
int connectTimeoutMs = 10000;

unsigned long cntNow = 0; // VARIABLES FOR Millis()
unsigned long cntInit = millis();
unsigned long cntInterv = 900000; // 15 min reboot

float TEMP = 0;
float HUMIDITY = 0;
float INDEX;

BLYNK_WRITE(V4)
{   
  tempCal = param.asInt(); // Get value as integer
  }

BLYNK_WRITE(V8)
{   
  START = param.asInt(); // Get value as integer
}

BLYNK_CONNECTED() { // when device is conneceted to Blynk Cloud... 

 Blynk.syncAll(); // request the values for all datastreams that has "sync" setting enabled 
  }

// This function creates the timer object. It's part of Blynk library 
BlynkTimer timer; 

void myTimer() 
{
  // This function describes what will happen with each timer tick
  // e.g. writing sensor value to datastream V5
  Vcc1 = analogRead(BattIn);
 Vout1 = (Vcc1 * 3.3) / Div;
 //R2 = R2+CorrectionFactor1;
 Vin1 = Vout1 / (R2/float(R1+R2));
 Vin1 = Vin1 * CorrectionFactor1;
 BATT1 = Vin1;

if (ct1 < Smoother) {
    Vtot1 = Vtot1+Vin1;
    //BATT1 = Vtot1/ct1+1;
    ct1=ct1+1;
  }
  else if (ct1==Smoother) {
    ct1=0;
  BATT1 = Vtot1/Smoother-1;
  Vtot1=0;
  Blynk.virtualWrite(V5, ALRM1); 
  }


  Blynk.virtualWrite(V0, TEMP);
  Blynk.virtualWrite(V1, HUMIDITY);
  Blynk.virtualWrite(V3, WiFi.SSID()+" "+WiFi.RSSI());
  Blynk.virtualWrite(V2, INDEX);
  Blynk.virtualWrite(V7, BATT1);
 // Blynk.virtualWrite(V9, iled);
  Blynk.virtualWrite(V6, Booting);
}


String overTheAirURL = "";
BLYNK_WRITE(InternalPinOTA) {
  overTheAirURL = param.asString();
  HTTPClient http;
  http.begin(overTheAirURL);
  int httpCode = http.GET();
  if (httpCode != HTTP_CODE_OK) {return;}
  int contentLength = http.getSize();
  if (contentLength <= 0) {return; }
  bool canBegin = Update.begin(contentLength);
  if (!canBegin) { return;}
  Client& client = http.getStream();
  int written = Update.writeStream(client);
  if (written != contentLength) {return;}
  if (!Update.end()) {return;}
  if (!Update.isFinished()) {return;}
reboot();
}

void reboot()
{
#if defined(ARDUINO_ARCH_MEGAAVR)
  wdt_enable(WDT_PERIOD_8CLK_gc);
#elif defined(__AVR__)
  wdt_enable(WDTO_15MS);
#elif defined(__arm__)
  NVIC_SystemReset();
#elif defined(ESP8266) || defined(ESP32)
{Booting = 1;
Blynk.virtualWrite(V6, Booting);
delay(1000);
Booting = 0;
Blynk.virtualWrite(V6, Booting);
delay(1000);
  ESP.restart();}
#else
  #error "MCU reset procedure not implemented"
#endif
  for (;;) {}
}

void setup() { // open setup

  
  pinMode(DHTPIN,INPUT);   // DHT11 Data In
  pinMode(32,INPUT_PULLDOWN);  // Battery sense
  pinMode(Starter, OUTPUT); //KeyFob Lock Button Press
  digitalWrite (Starter, HIGH);
  
  
   Serial.begin(115200);
    delay(10);
    
    wifiMulti.addAP("");
    wifiMulti.addAP("");
    wifiMulti.addAP("");
    wifiMulti.addAP("");
    

    Serial.println("Connecting Wifi...");
    if(wifiMulti.run() == WL_CONNECTED) {
        Serial.println("");
        Serial.print("Connected to : ");
        Serial.println(WiFi.SSID());
        ssid = WiFi.SSID();       
        Serial.print("IP address: ");
        Serial.println(WiFi.localIP());
           }
    else
      { Serial.println("");
        Serial.print("Connected to : ");
        Serial.println(ssid);}

  if (ssid == "Truck Hotspot") {
    timer.setInterval(30000L, myTimer);
  } else {
 // timer.setInterval(500L, myTimer);
  }

  Blynk.config(auth);
  Blynk.connect(0);

  dht.begin();
     
} //close setup

void impala() {
  if(START == 1){
  digitalWrite (Starter, LOW);
  iled=1;
  Blynk.virtualWrite(V9, iled);
  delay(dur);
  digitalWrite (Starter, HIGH);
  iled=0;
  Blynk.virtualWrite(V9, iled);
  delay(dur);
  digitalWrite (Starter, LOW);
  iled=1;
  Blynk.virtualWrite(V9, iled);
  delay(dur);
  digitalWrite (Starter, HIGH);
  iled=0;
  Blynk.virtualWrite(V9, iled);
  delay(dur);
  digitalWrite (Starter, LOW);
  iled=1;
  Blynk.virtualWrite(V9, iled);
  delay(dur);
  digitalWrite (Starter, HIGH);
  iled=0;
  Blynk.virtualWrite(V9, iled);
  }
}
    
    
   

void update() {
// open test humidity/temp
    int HUMIDITY = dht.readHumidity();
    // Read temperature as Fahrenheit (isFahrenheit = true)
   float TEMP = dht.readTemperature(true);
    // Check if any reads failed and exit early (to try again).
  if (isnan(HUMIDITY) || isnan(TEMP)) { // open check
     Serial.println(F("Failed to read from DHT sensor!"));
     HUMIDITY=0;
     TEMP=0;
    return;
  }
   // close check
}

void loop() { //open MAIN loop !!!!!!!!!!!!!!!!!!!!

Blynk.run();
timer.run();

//if the connection to the stongest hotspot is lost, it will connect to the next network on the list
  if (wifiMulti.run(connectTimeoutMs) == WL_CONNECTED) {
    
    Serial.print("WiFi connected: ");
    Serial.print(WiFi.SSID());
    Serial.print(" ");
    Serial.println(WiFi.RSSI());
    Serial.println("");
    Serial.print("Vcc1 = ");
    Serial.println(Vcc1);
    Serial.print("Vout1 = ");
    Serial.println(Vout1);
    Serial.print("Vin1 = ");
    Serial.println(Vin1);
    Serial.print("BATT1 = ");
    Serial.println(BATT1);
    Serial.println();
    delay(1000);
  }
  else {
    Serial.println("WiFi not connected!");
    
  }
  

TEMP = dht.readTemperature(true)+tempCal;
HUMIDITY = dht.readHumidity();
INDEX = dht.computeHeatIndex(TEMP,HUMIDITY);
if (BATT1 < 10.50) {
    delay(2000);
    if (BATT1 < 10.50) ALRM1 = 1;}
  if (BATT1 > 10.70) ALRM1 = 0;

update();
impala();

    Serial.print("Connected to ");
    Serial.println(ssid);
    Serial.print("Temp = ");
    Serial.println(TEMP);
    Serial.print("Humidity = ");
    Serial.println(HUMIDITY);
    Serial.println("");
    Serial.print("Heat Index = ");
    Serial.println(INDEX);
//delay(2000);

// if (millis() - cntInit >= cntInterv) reboot();

   
unsigned long currentMillis = millis();

 }// close loop
2

What type of Blynk subscription do you have?
Does your device show as being online in the Blynk app/console?
If you have a Free Blynk account then is it one with the 30,000 message per month limit?
Are you connected to a WiFi network called “Truck Hotspot”? (If not then your timer will never run)
What does your serial monitor show when you boot your device?

Pete.

1 Like
3

Thank You for your help. It was the Commented line in the //timer.setInterval(500L, myTimer);
I must have lost track of it when I updated my sketch. Thank You again.

1 Like