Hi, the analogRead() function works whenever I comment out the setup() part. I've tried commenting out chunks of setup() but in vain. Could somebody help please?
// Import required libraries
#include <WiFi.h>
#include <ESPAsyncWebServer.h>
#include <SPIFFS.h>
#include <Wire.h>
float voltage = 0;
int analogInput = 15;
const char* ssid = "***";
const char* password = "***";
// Create AsyncWebServer object on port 80
AsyncWebServer server(80);
void setup() {
/*
Some problem in this setup() function causing ESP32 to not read Analog at pin 4, but I don't know why yet
*/
// Serial port for debugging purposes
Serial.begin(115200);
// Initialize SPIFFS
if(!SPIFFS.begin()){
Serial.println("An Error has occurred while mounting SPIFFS");
return;
}
// Connect to Wi-Fi
WiFi.begin(ssid, password);
while(WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi..");
}
// Print ESP32 Local IP Address
Serial.println(WiFi.localIP());
// Route for root / web page
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/index.html");
});
server.on("/voltage", HTTP_GET, [](AsyncWebServerRequest *request){
request->send_P(200, "text/plain", String(voltage).c_str());
});
// Start server
server.begin();
}
void loop() {
// read the input on analog pin 15:
int sensorValue = analogRead(analogInput);
// Convert the analog reading (which goes from 0 - 4095) to a voltage (0 - 3.3V):
voltage = sensorValue * (3.3 / 4095.0);
Serial.println(voltage);
delay(2);
}
