Error for esp32

Need Help With My Project
1

i have this error can anyone help me i really need it
In file included from C:\Users\Admin\Documents\Arduino\libraries\Blynk\src/BlynkApiArduino.h:14,
from C:\Users\Admin\Documents\Arduino\libraries\Blynk\src/BlynkSimpleEsp32.h:20,
from C:\Users\Admin\AppData\Local\Temp.arduinoIDE-unsaved20231117-18716-1immoki.506s\sketch_dec17a\sketch_dec17a.ino:8:
C:\Users\Admin\Documents\Arduino\libraries\Blynk\src/Blynk/BlynkApi.h:40:3: error: #error “Please specify your BLYNK_TEMPLATE_ID and BLYNK_DEVICE_NAME”
#error “Please specify your BLYNK_TEMPLATE_ID and BLYNK_DEVICE_NAME”
^~~~~
C:\Users\Admin\Documents\Arduino\libraries\Blynk\src/Blynk/BlynkApi.h:11: error: unterminated #ifndef
#ifndef BlynkApi_h

2

It’s fairly self explanatory.

Pete.

3

what do you mean pete?

4

Pete.

5

like how to specify it? sorry im new to this

6

Maybe you should start by telling us what you’ve done so far, what hardware you are using, what Blynk firmware library you are using etc etc.

Pete.

7

Pete. I got the same error. I have copied the Template ID and the Template Name from my Blynk.Console, but I still got the same error message. What should I do?

8

Here is my code:

#include <Wire.h>
#include <DHT.h>
#include <LiquidCrystal_I2C.h> // Library for the I2C LCD display
#include <Blynk.h> 

// Blynk Auth Token
char auth[x] = "5zjno4eZT3zQkC0T15_X0cDOQST_gcf7";
#define BLYNK_TEMPLATE_ID "TMPL6kvEwBZGE";
#define BLYNK_TEMPLATE_NAME "ESP32 SMART WATERING UNTUK TUGAS AKHIR";

// DHT22 Sensor
#define DHTPIN 25
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

// Soil Moisture Sensor
#define SOIL_MOISTURE_PIN 13
const int dry = 2650;
const int wet = 1059;

// Water Flow Sensor
#define WATER_FLOW_PIN 2
volatile long pulseCount = 0;
unsigned long lastPulseTime = 0;

// LCD Display
LiquidCrystal_I2C lcd(0x27, 16, 2); // Address 0x27, 16x2 LCD

// Blynk Virtual Pins
#define BLYNK_V0 V0
#define BLYNK_V1 V1
#define BLYNK_V2 V2
#define BLYNK_V3 V3

void setup() {
 Serial.begin(9600);
 Blynk.begin(auth);
 dht.begin();
 lcd.init();
 lcd.backlight();
 lcd.setCursor(1, 0);
 lcd.print("Smart Watering");
 lcd.setCursor(6, 1);
 lcd.print("1.0");
 delay(3000);
 pinMode(WATER_FLOW_PIN, INPUT);
 attachInterrupt(digitalPinToInterrupt(WATER_FLOW_PIN), increase, RISING);
}

void loop() {
 Blynk.run();
 sendSensorData();
}

void sendSensorData() {
 // Read soil moisture percentage
 int sensorVal = analogRead(SOIL_MOISTURE_PIN);
 int moisturePercentage = map(sensorVal, wet, dry, 100, 0);
 Serial.print("Soil Moisture: ");
 Serial.print(moisturePercentage);
 Serial.println("%");

 // Read temperature and humidity from DHT22 sensor
 float temperature = dht.readTemperature();
 float humidity = dht.readHumidity();

 // Display on LCD
 lcd.clear();
 lcd.setCursor(0, 0);
 lcd.print("CS Moisture:");
 lcd.print(moisturePercentage);
 lcd.print("%");

 lcd.setCursor(0, 1);
 lcd.print("T:");
 if (!isnan(temperature)) {
    lcd.print(temperature, 1);
    lcd.print("°C ");
 } else {
    lcd.print("NaN");
 }

 lcd.print("H:");
 if (!isnan(humidity)) {
    lcd.print(humidity, 1);
    lcd.print("%");
 } else {
    lcd.print("NaN");
 }

 // Calculate Water Flow
 unsigned long currentTime = millis();
 float flowRate = 3.142 * pulseCount / 1000 * (3600.0 / (currentTime - lastPulseTime));
 float waterFlowLiters = flowRate / 1000; // Convert mL to L
 Blynk.virtualWrite(BLYNK_V3, waterFlowLiters);

 // Reset pulse count for the next calculation
 pulseCount = 0;
 lastPulseTime = currentTime;
}

// This function is called whenever a rising edge is detected on the water flow sensor pin
void IRAM_ATTR increase() {
 pulseCount++;
}
9

@algiforreal Please edit your post, using the pencil icon at the bottom, and add triple backticks at the beginning and end of your code so that it displays correctly.
Triple backticks look like this:
```

Copy and paste these if you can’t find the correct symbol on your keyboard.

Pete.

10

Is it now the code displays correctly?

11

Okay, first things first.
Before you do anything else you MUST remove this from your void loop…

Calling the sendSensorData function from your void loop will immediately flood the Blynk server.

You should read this…

and set-up a BlynkTimer to call the sendSensorData function - probably about once every 1000ms.

YOU NEED TO MAKE THIS CHANGE BEFORE YO7 DO ANYTHING ELSE!!

When you’ve done that, you should read this…

I suspect that your issue falls into scenario 2, an old library version and not having your three lines of configuration data at the very top of the sketch.

Pete.