ESP01-S voltage divider short circuit?

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Meter shows 0.48V to 3.15V at the ESP-01 pin.

I have tried using a NodeMCU Lolin V3 with GPIO2 and I get the same behavior.. hangs on boot

I simply do a DigitalRead( ) on the pin and send it via MQTT.

Here is the code, but I do not think this is the issue. The built-in blue LED stays on right when I boot up, as there is a short on the circuitry....

#include <ESP8266WiFi.h>
#include <PubSubClient.h>

// Update these with values suitable for your network.
const char* ssid = "xxxxxx";
const char* password = "xxxxxxx";

// Update these with the name of the sensor
const char* sensorname = "DEV1";

const char* mqtt_server = "xxxxxxxxxx"; /* "broker.mqtt-dashboard.com"  test.mosquitto.org  broker.hivemq.com */

WiFiClient espClient;
PubSubClient client(espClient);
unsigned long lastMsg = 0;
#define MSG_BUFFER_SIZE  (50)
char msg[MSG_BUFFER_SIZE];

int value = 0;

int led = 0;                // the pin that the LED is atteched to
int sensor = 3;             // the pin that the sensor is atteched to (GPIO2 with the ESP-01S?)
int val = LOW;              // variable to store the sensor status (value) 
int lastval = LOW;

void setup_wifi() {

  delay(10);
  // We start by connecting to a WiFi network
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  randomSeed(micros());
}


void reconnect() {

  digitalWrite(led, LOW);   // turn LED OFF
  delay(100);                // delay 100 milliseconds 

  // Loop until we're reconnected
  while (!client.connected()) {
    // Create a random client ID
    String clientId = "ESP8266Client-";
    clientId += String(random(0xffff), HEX);


    byte willQoS = 0;
    const char* willTopic = "lastwill";  
    const char* willMessage = sensorname;
    boolean willRetain = true;


    // Attempt to connect
    if (client.connect(clientId.c_str(),"username", "password", willTopic, willQoS, willRetain, willMessage)) {
      // Wait 2 seconds before retrying
      delay(2000); 
    } else {
      // Wait 2 seconds before retrying
      delay(2000);
    }
  }
}




void setup() {
  delay(1000);
  
  pinMode(led, OUTPUT);      // initalize LED as an output
  pinMode(sensor, INPUT);    // initialize sensor as an input
  Serial.begin(115200);
  setup_wifi();
  client.setServer(mqtt_server, 1883);
}

void loop() {

  
  if (!client.connected()) {
    reconnect();
  }
  client.loop();

  val = digitalRead(sensor);  // read sensor value
  
  if (val != lastval) { // sensor see a change, we publish to the log
    if (val==LOW) {
      snprintf (msg, MSG_BUFFER_SIZE, "High electricity rate ends");
      client.publish("electricity/log", msg);   // publish
    } else {
      snprintf (msg, MSG_BUFFER_SIZE, "High electricity rate starts");
      client.publish("electricity/log", msg);   // publish
    }
  }

  if (val == LOW){
    snprintf (msg, MSG_BUFFER_SIZE, "low"); // 
    client.publish("electricity/state", msg);   // publish the state
  } else {
    snprintf (msg, MSG_BUFFER_SIZE, "high"); // 
    client.publish("electricity/state", msg);   // publish the state    
  }
  
  delay(5000); // wait 60 senconds between measures
  lastval = val;    
}