ili9341_msgbox

// Origional webserver code I modified to include ILI9341 Dsplay and created message box.
// Origional can be found at https://www.hackster.io/rayburne/esp8266-01-web-server-696587.

#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
#include <Wire.h>

#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9340.h"


String form_template =                                             // String form to sent to the client-browser
  "<p>"
  "<center>"
  "<h1>Message Box Project</h1>"
  "<img src='http://megaicons.net/static/img/icons_sizes/8/178/256/buzz-message-outline-icon.png'>"
  "<form action='msg'><p>Message : <input type='text' name='msg' size=50 autofocus> <input type='submit' value='Submit'></form>"
  "</center>";


#define WIFI_SSDI "your_wifi_ssid"           // insert your WIFI_SSDI
#define WIFI_PASSWORD "your_wifi_passowrd"            // insert your password

// Instantiate server class                               // See tab Network for #include
ESP8266WebServer server(80);                              // HTTP server will listen at port 80

// These are the pins used for the NodeMCU
#define _sclk D5
#define _miso D6
#define _mosi D7
#define _cs   D2
#define _dc   D1
#define _rst  D8


Adafruit_ILI9340 tft = Adafruit_ILI9340(_cs, _dc, _rst); 

void mydelay(int ms) {
    int i;
    for(i=1;i!=ms;i++) {
          delay(1);
          if(i%20 == 0) {
                  ESP.wdtFeed(); 
                  yield();
          }
    }
}


void showmsgheader(void)
{
  
  tft.setCursor(10, 10);
  tft.fillScreen(ILI9340_BLACK);
  tft.setTextColor(ILI9340_WHITE);
  tft.setTextSize(3);
  tft.println("Message Box");
  char bufferstring[16];
  sprintf(bufferstring, "%3d.%3d.%3d.%3d", WiFi.localIP()[0], WiFi.localIP()[1], WiFi.localIP()[2], WiFi.localIP()[3]);
  tft.setTextSize(2);
  tft.println(bufferstring);
}
void displaymsg(String msg)
{
  if(NULL == msg) return;

  tft.setCursor(10, 80);
  tft.setTextSize(2);
  tft.println(msg);
}

/*
  handles the messages coming from the webbrowser, restores a few special characters and
  constructs the strings that can be sent to the oled display
*/
void process_input_msg() 
{

  server.send(200, "text/html", form_template);                    // Send same page so they can send another msg

  // Display msg on Oled
  String msg = server.arg("msg");

  String decodedMsg = msg;
  // Restore special characters that are misformed to %char by the client browser
  decodedMsg.replace("+", " ");
  decodedMsg.replace("%2C", ",");
  decodedMsg.replace("%2F", "/");
  decodedMsg.replace("%3A", ":");
  decodedMsg.replace("%3B", ";");
  decodedMsg.replace("%3C", "<");
  decodedMsg.replace("%3D", "=");
  decodedMsg.replace("%3E", ">");
  decodedMsg.replace("%3F", "?");
  decodedMsg.replace("%21", "!");
  decodedMsg.replace("%22", "");
  decodedMsg.replace("%23", "#");
  decodedMsg.replace("%24", "$");
  decodedMsg.replace("%25", "%");
  decodedMsg.replace("%26", "&");
  decodedMsg.replace("%27", "'");
  decodedMsg.replace("%28", "(");
  decodedMsg.replace("%29", ")");
  decodedMsg.replace("%2A", "*");
  decodedMsg.replace("%2B", "+");
  decodedMsg.replace("%40", "@");

  unsigned int lengte = decodedMsg.length();              // length of received message
  for  (int i = 0; i < lengte; i++)                       // prints up to 8 rows of 16 characters.
  {
    char c = decodedMsg[i];
    Serial.print(c);                                      //decodedMsg[i]);

  }
  Serial.println(' ');                                  // new line in monitor
  showmsgheader();
  displaymsg(decodedMsg);
}

void setup(void) 
{
  //ESP.wdtDisable();                                     // used to debug, disable wachdog timer,
  Serial.begin(115200);                                   // full speed to monitor
  tft.begin();
  showmsgheader();
  Wire.begin(0, 2);                                       // Initialize I2C and OLED Display
  WiFi.begin(WIFI_SSDI, WIFI_PASSWORD);                                 // Connect to WiFi network

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

  // Set up the endpoints for HTTP server,  Endpoints can be written as inline functions:
  server.on("/", []()
  {
    server.send(200, "text/html", form_template);
  });

  server.on("/msg", process_input_msg);  // And as regular external functions:
  server.begin();                        // Start the server

  Serial.print("WIFI_SSDI : ");          // prints WIFI_SSDI in monitor
  Serial.println(WIFI_SSDI);             // to monitor

  char bufferstring[16];
  sprintf(bufferstring, "%3d.%3d.%3d.%3d", WiFi.localIP()[0], WiFi.localIP()[1], WiFi.localIP()[2], WiFi.localIP()[3]);
  tft.setTextSize(2);
  tft.println(bufferstring);
  

  
  Serial.println("WebServer ready:   ");
  Serial.println(WiFi.localIP());                         // Serial monitor prints localIP
  Serial.println(); 
  Serial.println(bufferstring);

}


void loop(void) {
  server.handleClient();                                  // checks for incoming messages
}