ESP32 reset to zero GPIO pins in void loop

[XauTrop]

Sorry if this issue is not appropiate here and point me to discuss or whaterver other forum you think is the appropiate.

I'm using a ESP32 testing an tmp36. Without connecting to the wifi the reading of the TMP63 is ok.
When I connect to the wifi the GPIO readings go to 0 permanently. I do a GPIO scan in the void setup and I got values, but doing the scan indise the void loop the values are always 0. A normal script passing just a temperature value to the gateway is working, so seems no problem loading the libraries (Webthings 0.12.0, arduinojson: 6.17.2, WiFi: 1.2.7). Here is the serial output:

11:24:38.815 -> rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
11:24:38.861 -> configsip: 0, SPIWP:0xee
11:24:38.861 -> clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
11:24:38.861 -> mode:DIO, clock div:1
11:24:38.861 -> load:0x3fff0018,len:4
11:24:38.861 -> load:0x3fff001c,len:1216
11:24:38.861 -> ho 0 tail 12 room 4
11:24:38.861 -> load:0x40078000,len:10944
11:24:38.861 -> load:0x40080400,len:6388
11:24:38.861 -> entry 0x400806b4
11:24:39.138 -> *** Initiallizing ... ***
11:24:39.138 -> GPIO: 25 - reading: 621
11:24:39.138 -> GPIO: 2 - reading: 48
11:24:39.138 -> GPIO: 3 - reading: 0
11:24:39.138 -> GPIO: 4 - reading: 0
11:24:39.138 -> GPIO: 5 - reading: 0
11:24:39.138 -> GPIO: 6 - reading: 0
11:24:39.138 -> GPIO: 7 - reading: 0
11:24:39.138 -> GPIO: 8 - reading: 0
11:24:39.138 -> GPIO: 9 - reading: 0
11:24:39.138 -> GPIO: 10 - reading: 0
11:24:39.138 -> GPIO: 11 - reading: 0
11:24:39.138 -> GPIO: 12 - reading: 0
11:24:39.138 -> GPIO: 13 - reading: 0
11:24:39.138 -> GPIO: 14 - reading: 2918
11:24:39.138 -> GPIO: 15 - reading: 3743
11:24:39.183 -> GPIO: 16 - reading: 0
11:24:39.183 -> GPIO: 17 - reading: 0
11:24:39.183 -> GPIO: 18 - reading: 0
11:24:39.183 -> GPIO: 19 - reading: 0
11:24:39.183 -> GPIO: 20 - reading: 0
11:24:39.183 -> GPIO: 21 - reading: 0
11:24:39.183 -> GPIO: 22 - reading: 0
11:24:39.183 -> GPIO: 23 - reading: 0
11:24:39.183 -> GPIO: 24 - reading: 0
11:24:39.183 -> GPIO: 25 - reading: 768
11:24:39.183 -> GPIO: 26 - reading: 686
11:24:39.183 -> GPIO: 27 - reading: 832
11:24:39.183 -> GPIO: 28 - reading: 0
11:24:39.183 -> GPIO: 29 - reading: 0
11:24:39.183 -> GPIO: 30 - reading: 0
11:24:39.183 -> GPIO: 31 - reading: 0
11:24:39.183 ->
11:24:39.183 -> Connecting to "My Network"
11:24:39.277 ->
11:24:39.790 -> .
11:24:39.790 -> Connected to My Network
11:24:39.790 -> IP address: 192.168.1.45
11:24:39.790 -> MDNS responder started
11:24:39.790 -> HTTP server started
11:24:39.790 -> http://192.168.1.45/things/Tmp36
11:24:41.283 -> - reading: 0
11:24:41.283 -> GPIO: 2 - reading: 0
11:24:41.283 -> GPIO: 3 - reading: 0
11:24:41.331 -> GPIO: 4 - reading: 0
11:24:41.331 -> GPIO: 5 - reading: 0
11:24:41.331 -> GPIO: 6 - reading: 0
11:24:41.331 -> GPIO: 7 - reading: 0
11:24:41.331 -> GPIO: 8 - reading: 0
11:24:41.331 -> GPIO: 9 - reading: 0
11:24:41.331 -> GPIO: 10 - reading: 0
11:24:41.331 -> GPIO: 11 - reading: 0
11:24:41.331 -> GPIO: 12 - reading: 0
11:24:41.331 -> GPIO: 13 - reading: 0
11:24:41.331 -> GPIO: 14 - reading: 0
11:24:41.331 -> GPIO: 15 - reading: 0
11:24:41.331 -> GPIO: 16 - reading: 0
11:24:41.331 -> GPIO: 17 - reading: 0
11:24:41.331 -> GPIO: 18 - reading: 0
11:24:41.331 -> GPIO: 19 - reading: 0
11:24:41.331 -> GPIO: 20 - reading: 0
11:24:41.331 -> GPIO: 21 - reading: 0
11:24:41.331 -> GPIO: 22 - reading: 0
11:24:41.331 -> GPIO: 23 - reading: 0
11:24:41.331 -> GPIO: 24 - reading: 0
11:24:41.331 -> GPIO: 25 - reading: 0
11:24:41.331 -> GPIO: 26 - reading: 0
11:24:41.331 -> GPIO: 27 - reading: 0
11:24:41.377 -> GPIO: 28 - reading: 0
11:24:41.377 -> GPIO: 29 - reading: 0
11:24:41.377 -> GPIO: 30 - reading: 0
11:24:41.377 -> GPIO: 31 - reading: 0
11:24:41.377 -> GPIO: 25 - reading: 0

The code (a bit dirty due to several tests):
#define ARDUINOJSON_USE_LONG_LONG 1

#include <Arduino.h>
#include <Thing.h>
#include <WebThingAdapter.h>
#include <WiFi.h>
int tempPin = 25; //analog input pin constant

int temprdVal; // temperature sensor raw readings

float volts; // variable for storing voltage

float temp; // actual temperature variable
char ssid[] = "";
char password[] = "";
int status = WL_IDLE_STATUS;
//const String mDNSHostname = "Temp36sensor";
WebThingAdapter* adapter;
const char* sensorTypes[] = {"TemperatureSensor", nullptr};
ThingDevice sensor("Tmp36", "Temp36 Temperature Sensor", sensorTypes);
ThingProperty sensorTemp("temperature", "", NUMBER, "TemperatureProperty");
ThingProperty sensorHumd("humidity", "", NUMBER, nullptr);
ThingProperty sensorPres("pressure", "", NUMBER, nullptr);

void setup()
{
// initialize serial:

Serial.begin(115200);
Serial.println("*** Initiallizing ... ***");
read_gpio();
for (tempPin = 2; tempPin < 32; tempPin++) {
temprdVal = analogRead(tempPin);
Serial.print("GPIO: ");
Serial.print(tempPin);
Serial.print(" - reading: ");
Serial.println(temprdVal);

}

Serial.println("");
Serial.print("Connecting to "");
Serial.print(ssid);
Serial.println(""");
#if defined(ESP8266) || defined(ESP32)
WiFi.mode(WIFI_STA);
#endif
WiFi.begin(ssid, password);
Serial.println("");

// Wait for connection
bool blink = true;
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");

Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
adapter = new WebThingAdapter("tempsensor", WiFi.localIP());
// Set units for properties
sensorTemp.unit = "celsius";

// Associate properties with device
sensor.addProperty(&sensorTemp);
// Associate device with connection
adapter->addDevice(&sensor);
// Start mDNS and HTTP server
adapter->begin();

Serial.println("HTTP server started");
Serial.print("http://");
Serial.print(WiFi.localIP());
Serial.print("/things/");
Serial.println(sensor.id);
delay(1500);
}
Serial.print(" - reading: ");
Serial.println(temprdVal);
}

void loop()
{

//read the temp sensor and store it in tempVal
for (tempPin = 2; tempPin < 32; tempPin++) {
temprdVal = analogRead(tempPin);
Serial.print("GPIO: ");
Serial.print(tempPin);
Serial.print(" - reading: ");
Serial.println(temprdVal);

}
int tempPin = 25; //analog input pin constant
temprdVal = analogRead(tempPin);
Serial.print("GPIO: ");
Serial.print(tempPin);
Serial.print(" - reading: ");
Serial.println(temprdVal);
volts = temprdVal/1023.0; // normalize by the maximum temperature raw reading range

temp = (volts - 0.5) * 100 ; //calculate temperature celsius from voltage as per the equation found on the sensor spec sheet.

Serial.print(" Temperature is: "); // print out the following string to the serial monitor
Serial.print(temp); // in the same line print the temperature
Serial.println (" degrees C"); // still in the same line print degrees C, then go to next line.
ThingPropertyValue value;
value.number = temp;
sensorTemp.setValue(value);
adapter->update();
delay(10000); // wait for 1 second or 1000 milliseconds before taking the next reading.
}

Any advise?
Thank you

[XauTrop]

UPDATE:
I tried the LED example, it didn't worked with the GPIO pin 25 but worked with 13. Then I tryied the temperature code with the pin 13 with no results. I also declared the pin as INPUT, and nothing. I also did not included the wifi library in case was causing any issue, but not working again.

[XauTrop]

UPDATE:
As far I could read on the webs, the issue was not with the webthing-arduino library but with the ESP32 and the Wifi module.
When the wifi module is emmiting the ADC2 pins become useless due to a drop in power. Only pins ADC1 can be used (as pin33), but you need to define it as input ... :

  int sensorPin = 33;
  pinMode(sensorPin,INPUT);
  adcAttachPin(sensorPin);

Sorry for the issue here. I hope this will helpfull for other
Thanks!