analogReadResolution(10)
    analogSetWidth(10)

But still the esp32 was giving false readings and I couldn't calibrate it as shown in the tutorials for gsr sensor (by turning the resistance until I get a reading of 512 without using the sensor)

Thank you, that worked. However the sensor values are completely through the rought and I cannot modify it with the resistor as described in the GSR documentation. I think its because of the digital to analog convertion or its just an incompatibility. Anyway, this is outside the scope of this forum. Thank you for your help.

based on the code on the seedstudio site, this UIFlow code may work.

but this is guesswork as I dont have the sensor.

Thank you, that worked. However the sensor values are completely through the rought and I cannot modify it with the resistor as described in the GSR documentation. I think its because of the digital to analog convertion or its just an incompatibility. Anyway, this is outside the scope of this forum. Thank you for your help.

Have you read this?
https://community.seeedstudio.com/Arduino+and+Galvanic+Skin+Response+(GSR)+Sensor-p-306.html

Thank you for your reply. The GSR sensor is "Grove GSR Seeeduino Sensor" and in the documentation it says the output is analog. I will try connecting it to the analog pins.

Hello,

I am using m5stack basic and I have connected a GSR sensor to it with the grove connector. What I cannot seem to figure out is how to get the reading from the sensor. I tried analogRead(20), analogRead(21), analogRead(22) and many others that I found in suggestions on other threads in this forum. No luck however...

This is my code:

#include "M5Stack.h"

#define INPUT_PIN 21
#define READ_RATE 400  // How often the serial link is read, in milliseconds
// The setup() function runs once each time the micro-controller starts
void setup()
{
   // init lcd, serial, not init sd card
   M5.begin(true, false, true);
   pinMode(INPUT_PIN, INPUT);
   M5.Lcd.setTextSize(5);
}

// Add the main program code into the continuous loop() function
void loop()
{
   int reading = analogRead(INPUT_PIN);
   M5.Lcd.println(reading);
   Serial.println(reading);

   M5.update();
   delay(READ_RATE);
}

I apologize for the noob question. I'm new to this. Thank you in advance for even taking the time to read this thread.

What is the GSR sensor?
The Grove port on the M5Stack Core is only a digital (i2c) port and doesn't work with analogue input. To use analogue sensors you need to use the analog pins on the baseplate.

Its still "Work In Progress" but this may help you.
UIFlow Handbook