WiFi and UART

#include <SoftwareSerial.h>
#include <ESP8266WiFi.h>
#include <FirebaseESP8266.h>

EspSoftwareSerial::UART testSerial;

// WiFi credentials
const char* ssid = "no internet";
const char* password = "nointernet";

void setup() {
  Serial.begin(9600);

  // Connect to Wi-Fi
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  testSerial.begin(115200, EspSoftwareSerial::SWSERIAL_8N1, D7, D8, false, 95, 11);
  if(!testSerial){
    Serial.println("Invalid EspSoftwareSerial pin configuration, check config");
    while(1){
      delay(1000);
    }
  }
  Serial.println("EspSoftwareSerial init");
}

void loop(){
  if(testSerial.available()){
    char receivedData = testSerial.read();
    Serial.println(receivedData);
  }
}