Serial.print... nothing appears to function...

I'm very tired.... this code finally compiled and the serial window is empty except for when I press reset. I went to a blank slate with just Serial.begin and it worked, same for clearing out most of the functions.... no crash messages either.

Well, EDIT - I did notice my refs to pins were GPIO not D0 style, that can't be the cause though...

#define NODE_NUMBER 5 //This is Node ID
#define UDP_TX_PACKET_MAX_SIZE 32
#define UDP_TIMEOUT 800
#define WiFI_Conn_Timeout 4000
#define AP_PASSWORD NOT FOR YOUR EYES
#define SSIDn "JMR"
#define VIBRATION_THRESHOLD 5

#ifdef ESP32
#define BOARD_TYPE "ESP32"
#define NO_OF_LEDS 1
#define LED1 5
#define LED2 5
#define BOARD_NO 1
#endif
#ifdef ESP8266
#define BOARD_NO 2
#define BOARD_TYPE "ESP8266"
#define NO_OF_LEDS 2
#define LED1 2
#define LED2 LED_BUILTIN
#endif
#ifdef ARDUINO_AVR_UNO
#define BOARD_NO 3
#define BOARD_TYPE "UNO"
#define NO_OF_LEDS 1
#define LED1 LED_BUILTIN
#define LED2 LED_BUILTIN
#endif
// ** Node 5 ***


//*****PIN-MAP for Node5 ESP12E ************************************************************************************************************************************************************
int dr5 = 0, bo5 = 1, pr5 = 2, vb5 = 3, vbp = 4;

int installed[21] = { -1, -1, 1, 1, 2 };
char *ssNames[21] = {         "dr5",  "bo5",    "pr5",   "vb5", "vbp" };

// *****************************************************************************************************************************************************************

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
int node = NODE_NUMBER;
char *ssid;

int debugOn;
int code, i, x;
long delayMS = 100;
int iNow[30], iWas[30];
String msgPtr;
long unsigned last[30];
char packetBuffer[32], packetCode[5], packet[32];
int deBounceMS = 25;

int pinNumbers[21] = {  D0,     D1,     D2,          D3,      D4,    D5,      6,    7,    8,    9,    10 }; //D port numbers, NOT GPIO


const byte numChars = 8;
char *nodeName = "North Door (Davidson)";
char codeChar[numChars];
int arrMax = 20;

//OBJ NSTANTIOANTIONS
WiFiUDP Udp;

//Function Declarations
void setup();
void loop();
int udpRead();
int UDPsend(int, int);
int UDPsend(char*, int);
int sendUDP(int, int);
int sendUDP(char*, int);
int udpInit();
int wifiInit(int);

void setup() {
  //start standardizing functions for nodes
  Serial.begin(115200);
  wifiInit(node);
  //httpDInit(); //Start the HTTPD for OTA updates - not sure if WebServer works on ESP8266
  udpInit();
  pinMode(dr5, INPUT_PULLUP);
  pinMode(bo5, INPUT_PULLUP);
  pinMode(vb5, INPUT);
  pinMode(vbp, OUTPUT);
  pinMode(pr5, INPUT);
  String strMsg = String("Node ") + String(NODE_NUMBER) + String(" Started");

  Serial.println(strMsg);
  Serial.println(5099); //This init code will change
}

void loop() {
  for (i = 0; i < arrMax + 0; i++) {
    int x = pinChange(i); //pinChange handes iNow vs iWas comparison, debounce
    if (abs(x) == 1) {
      //state change!
      inParse(ssNames[i], x);
    }
    //no change
  }
next:
  int x = udpRead(); //udpRead() returns length of read string
  if (x > 2) {
  }

  long unsigned endMS = millis() + delayMS;
  while (millis() < endMS) {
  }
}
int inParse(String target, int dirc) {
  static int vibrationCount;
  if (target == "dr5") {
    if (dirc == 1) {
      Serial.println(5001);
    }  //Door opens HIGH
    if (dirc == -1) {
      Serial.println(5002);
    } //door closes LOW
  }
  if (target == "bo5") {
    //bolt locks (Reed sensor is on the UNLOCK side, thus unlock == LOW)
    if (dirc == 1) {
      Serial.println(5009);  //bolt locks
    }
    if (dirc == -1) {
      Serial.println(5010);  // bolt unlocks
    }
  }
  if (target == "pr5") {
    if (dirc == 1) {
      Serial.println(5021);  //PIR goes active (high)
    }
    if (target == "vb5") {
      //Vibration sensor is shaking
      if (dirc == 1) Serial.println("Vibration Sensor open"); //debug
      if (dirc == -1) Serial.println("Vibration Sensor CLOSED");
      //send code, reset count, set timer
      if (vibrationCount > VIBRATION_THRESHOLD) {
        Serial.println(5062);
      }

    }  //vb5 (a little more complex) when this goes low only for a breif moment send a packet, but don't send a bunch in a row!
  }
}
int pinChange(int i) {
  int iDelta, iW;

  if (abs(installed[i]) == 1) {         //If input (-1 or 1)
    iNow[i] = digitalRead(pinNumbers[i]);
    if (iNow[i] == iWas[i]) {         //No state change
      return 0;
    }
    if ((millis() - last[i]) < deBounceMS) { //DeBounce: Exit if changed but not long enough
      return 0;
    }
    last[i] = millis(); //If past this point, state has CHANGED
  } //end if input
  if (iWas[i] == 0) iDelta = 1;
  if (iWas[i] == 1) iDelta = -1;
  return iDelta;
}
int wifiInit(int node) {
  //Change, must call with ipD argument
  int ipD;

  char filler1[16], filler2[16];
  char *password = &filler1[0];
  char * ssid = &filler2[0];
  ssid = SSIDn;
  password = AP_PASSWORD;
 ssid = "JMR";

  ipD = 130 + node;
  if ((node < 0) || (node > 10)) {
    return 54502; //bad node # argument  }
    if (strlen(password) < 2) {
      return 54503;
    }

    WiFi.mode(WIFI_STA);
    IPAddress ip(192, 168, 1, ipD);
    IPAddress gw(192, 168, 1, 254);
    IPAddress dns(192, 168, 1, 254);
    IPAddress sn(255, 255, 255, 0);
    WiFi.config(ip, gw, sn,  dns);
    int x = WiFi.begin(ssid, password); //x is status only, no value to return!
    // Wait for connection


    long dMS = millis();
    while (WiFi.status() != WL_CONNECTED) {
      if (WiFi.status() == WL_NO_SHIELD) return 54504;
      if (WiFi.status() == WL_NO_SSID_AVAIL) return 54505;
      if (WiFi.status() == WL_CONNECT_FAILED) return 54506;
      if (WiFi.status() ==  WL_CONNECTION_LOST) return 54507;
      if (WiFi.status() ==  WL_DISCONNECTED) return 54508;
      delay(500);
      Serial.print(".");
      if (millis() - dMS > WiFI_Conn_Timeout) {
        return 54509;
      }
      String spr = String("Node") + String(node) + String(" (") + String(nodeName) + String(") connected to ");
    Serial.print("Node ");
    Serial.print(node);
    Serial.print(" (");
    Serial.print(nodeName);
    Serial.print("connected to: ");
    Serial.println(ssid);
    Serial.print("IP address: ");
    Serial.println(WiFi.localIP());
  } //end if connected
  return 24510;
}
}
int udpInit() {
  int x = Udp.begin(8888);
  if (x < 1) {
    return 54410;
  }

}

int udpBegin() {
  return udpInit();
}
TRUNCATED...
}

What happened when you put a print immediately after the Serial.begin?