// SafeString_Example1e.ino
// install the SafeString library from the Arduino Library manager or
// download and install the SafeString zip file from
// www.forward.com.au/pfod/ArduinoProgramming/SafeString/index.html
#include "SafeString.h"
createSafeString(msgStr, 10, "A0"); // increased to capacity of 10 and initial value of A0
void setup() {
  // Open serial communications and wait a few seconds
  Serial.begin(9600);
  for (int i = 10; i > 0; i--) {
    Serial.print(' '); Serial.print(i);
    delay(500);
  }
  Serial.println();
  SafeString::setOutput(Serial); // enable error messages and debug() output to be sent to Serial
  if (SafeString::errorDetected()) {
    while (1) {
      Serial.println(F("Error is SafeString globals!!"));
      delay(3000);
    }
  }
}
void loop() {
  msgStr.clear(); // remove the initial value
  msgStr.print(analogRead(A0), HEX);
  msgStr -= " = 0x";
  msgStr.prefix(F("A0"));
  Serial.println(msgStr);
  while (1) { // stop here
    delay(1); // add delay(1) to prevent ESP32 reboots
  }
}