Hello everyone,
I have been working on a project in which I show the flowrate of water in an RO plant.
For which I’ve used ESP32 dev board. So far I’m facing a problem. Due to low signals, my ESP32 gets connect and disconnect manytimes a day, but the powersupply stays on that means ESP32 stay ON all the time (without any resets). When my ESP32 reconnects, all the values and variables become zero or vanish.
Kindly help me out in that… SORRY FOR BAD ENGLISH AS IT ISN’T MY NATIVE LANGUAGE 
HERE’S MY PROGRAM
#define BLYNK_MAX_SENDBYTES 255 #define BLYNK_PRINT Serial #include <WiFi.h> #include <WiFiClient.h> #include <BlynkSimpleEsp32.h> #include <EEPROM.h> WidgetLED well(V3); WidgetLED feed(V4); WidgetLED pressure(V5); WidgetLED AM(V10); #define wellPin 32 //D0 16 #define feedPin 33 #define presPin 25 #define intrPin 26 #define am 27 boolean wellPump; boolean feedPump; boolean presPump; boolean amStatus; boolean err = 0, wellErr = 0, feedErr = 0, presErr = 0, i = 0; float calibrationFactor = 7.5; //450 pulses / 60 sec int count = 0; float wellKW = 2.1; float feedKW = 1.27; float presKW = 2.94; volatile byte pulse = 0; float flowRate = 0.0, totalGallons = 0.0, preGallons = 0.0; float KW = 0.0, KWh = 0.0, preKWh = 0.0; float GPKW = 0.0; uint32_t seconds = 0;//oldTime = 0; char auth[] = "DG-Dmf24TsZoDIuIuUw8b4a2EJNhcpT9"; char ssid[] = "Transworld";//"Infinix Smart 3 Plus";//"Transworld_EXT"; //"HUAWEI nova";// char pass[] = "Password"; //"mansoors";//"Zubair123"; String body; BlynkTimer timer; void intr(){ pulse++; } void EEPROMWrite(int address, uint32_t value) { //Decomposition from a long to 4 bytes by using bitshift. //One = Most significant -> Four = Least significant byte byte four = (value & 0xFF); byte three = ((value >> 8) & 0xFF); byte two = ((value >> 16) & 0xFF); byte one = ((value >> 24) & 0xFF); //Write the 4 bytes into the eeprom memory. EEPROM.write(address, four); EEPROM.write(address + 1, three); EEPROM.write(address + 2, two); EEPROM.write(address + 3, one); EEPROM.commit(); } //This function will return a 4 byte (32bit) long from the eeprom //at the specified address to adress + 3. uint32_t EEPROMRead(int address) { //Read the 4 bytes from the eeprom memory. uint32_t four = EEPROM.read(address); uint32_t three = EEPROM.read(address + 1); uint32_t two = EEPROM.read(address + 2); uint32_t one = EEPROM.read(address + 3); //Return the recomposed long by using bitshift. return ((four << 0) & 0xFF) + ((three << 8) & 0xFFFF) + ((two << 16) & 0xFFFFFF) + ((one << 24) & 0xFFFFFFFF); } void test(){ Serial.println("---------------------------------------"); Serial.print("Well Pump : "); Serial.println(wellPump); Serial.print("Feed Pump : "); Serial.println(feedPump); Serial.print("Pressure Pump: "); Serial.println(presPump); Serial.print("FlowRate: "); Serial.print(flowRate); Serial.println(" GPM"); Serial.print("Total: "); Serial.print(totalGallons); Serial.println(" Gallons"); } void check(){ if(!Blynk.connected()){ Blynk.disconnect(); Blynk.begin(auth, ssid, pass); count = 18; } else{ if(wellErr && feedErr && presErr){ if(!i){ i = 1; body = String("AT ""RO PLANT 1.5GPM"", ALL PUMPS i.e. WELL PUMP, FEED PUMP AND HIGH-PRESSURE PUMP ARE STOPPED."); Blynk.email("mansoor.samad@patex.com.pk", "Subject: RO PLANT STATUS", body); Blynk.notify("RO PLANT 1.5GPM is currently off"); } else i = 0; } else if(!feedErr && presErr){ if(!i){ i = 1; body = String("HIGH-PRESSURE PUMP IS STOPPED, WHILE FEED PUMP IS RUNNING AT ""RO PLANT 1.5GPM""."); Blynk.email("mansoor.samad@patex.com.pk", "Subject: RO PLANT STATUS", body); Blynk.notify("HIGH-PRESSURE PUMP IS STOPPED, WHILE FEED PUMP IS RUNNING."); } else i = 0; } else if(feedErr && !presErr){ if(!i){ i = 1; body = String("FEED PUMP IS STOPPED, WHILE HIGH-PRESSURE PUMP IS RUNNING AT ""RO PLANT 1.5GPM""."); Blynk.email("mansoor.samad@patex.com.pk", "Subject: RO PLANT STATUS", body); Blynk.notify("FEED PUMP IS STOPPED, WHILE HIGH-PRESSURE PUMP IS RUNNING."); } else i = 0; } EEPROMWrite(0, KWh*100); EEPROMWrite(5, totalGallons*100); EEPROM.commit(); } } void MAIN(){ wellPump = !digitalRead(wellPin); feedPump = digitalRead(feedPin); presPump = !digitalRead(presPin); amStatus = !digitalRead(am); //if((millis() - oldTime) > 1000){ detachInterrupt(intrPin); flowRate = pulse / calibrationFactor; //oldTime = millis(); flowRate = (flowRate * 0.27); totalGallons += (flowRate/60); pulse = 0; attachInterrupt(intrPin, intr, FALLING); //} //test(); if(amStatus){ AM.on(); } else{ AM.off(); } KW = 0.0; if(wellPump){ KW += wellKW; wellErr = 0; well.on(); } else{ wellErr = 1; well.off(); } if(feedPump){ feedErr = 0; KW += feedKW; feed.on(); } else{ feedErr = 1; feed.off(); } if(presPump){ presErr = 0; KW += presKW; pressure.on(); } else{ presErr = 1; pressure.off(); } KWh += (KW/3600); //adding per second (3600s = 1hr) seconds++; if(seconds>=2592000){ //monthly seconds seconds = 0; preKWh = KWh; KWh=0; preGallons = totalGallons; totalGallons = 0; GPKW = totalGallons / (KWh/3600); //Gallons per KW EEPROMWrite(10, preKWh*100); EEPROMWrite(15, preGallons*100); EEPROM.commit(); } ////////////////////////////////////////////////// if(count >= 5){ count = 0; check(); } else count++; Blynk.virtualWrite(V6, preKWh); Blynk.virtualWrite(V7, preGallons); Blynk.virtualWrite(V8, GPKW); Blynk.virtualWrite(V9, KWh); Blynk.virtualWrite(V0, KW); Blynk.virtualWrite(V2, flowRate); Blynk.virtualWrite(V1, totalGallons); } BLYNK_CONNECTED(){ Blynk.syncVirtual(V11); } BLYNK_WRITE(V11){ if(param.asInt() == 1){ totalGallons=0; KWh=0; preKWh=0; preGallons=0; GPKW=0; } } void setup() { // put your setup code here, to run once: EEPROM.begin(20); Serial.begin(9600); pinMode(wellPin, INPUT_PULLUP); pinMode(feedPin, INPUT_PULLUP); pinMode(presPin, INPUT_PULLUP); pinMode(intrPin, INPUT_PULLUP); pinMode(am, INPUT_PULLUP); preKWh = (EEPROMRead(10)/100.000); preGallons = (EEPROMRead(15)/100.000); KWh = (EEPROMRead(0)/100.000); KWh += 0.011; totalGallons = (EEPROMRead(5)/100.000); totalGallons += 0.034; //delay(1000); Blynk.begin(auth, ssid, pass); //Blynk.email("mansoor.samad@patex.com.pk", "Subject: RO PLANT STATUS", """RO PLANT 1.5GPM"" IS SUCCESSFULLY CONNECTED TO THE SERVER."); timer.setInterval(1000L, MAIN); attachInterrupt(intrPin, intr, FALLING); } void loop() { if(Blynk.connected()){ Blynk.run(); if(!i){ i=1; preKWh = (EEPROMRead(10)/100.000); preGallons = (EEPROMRead(15)/100.000); KWh = (EEPROMRead(0)/100.000); KWh += 0.011; totalGallons = (EEPROMRead(5)/100.000); totalGallons += 0.034; } } timer.run(); }
