Hi, I am new to M5 Atom lite. I programmed it with the following code to test its functionality, but i am getting garbage values on the serial monitor. I tried changing the serial monitor to all the baud rates available including 9600 and 115200, but no success.

#include "M5Atom.h"
void setup(){
M5.begin(true, true, true); // Clear the serial port buffer and set the serial port baud rate to 115200. Initialize I2C. Initialize the LED matrix
}

void loop(){
M5.update(); //You need to add m5.update () to read the state of the key, see System for details
if (M5.Btn.isPressed()) { //If the button is pressed
Serial.println("Button is pressed.");
}
delay(20);
}