Teensy_WebSocketServer_W5500.ino

/****************************************************************************************************************************
  Teensy_WebSocketServer_W5500.ino
  For Teensy boards using W5x00 Ethernet Shield/Module

  Based on and modified from WebSockets libarary https://github.com/Links2004/arduinoWebSockets
  to support other boards such as  SAMD21, SAMD51, Adafruit's nRF52 boards, etc.

  Built by Khoi Hoang https://github.com/khoih-prog/WebSockets_Generic
  Licensed under MIT license
 *****************************************************************************************************************************/

#if ( defined(CORE_TEENSY) )
  // Default pin 10 to SS/CS
  #define USE_THIS_SS_PIN       10

  #if defined(__IMXRT1062__)
    // For Teensy 4.1/4.0
    #if defined(ARDUINO_TEENSY41)
      #define BOARD_TYPE      "TEENSY 4.1"
      // Use true for NativeEthernet Library, false if using other Ethernet libraries
      #define USE_NATIVE_ETHERNET     false   //true
    #elif defined(ARDUINO_TEENSY40)
      #define BOARD_TYPE      "TEENSY 4.0"
    #else
      #define BOARD_TYPE      "TEENSY 4.x"
    #endif
  #elif defined(__MK66FX1M0__)
    #define BOARD_TYPE "Teensy 3.6"
  #elif defined(__MK64FX512__)
    #define BOARD_TYPE "Teensy 3.5"
  #elif defined(__MKL26Z64__)
    #define BOARD_TYPE "Teensy LC"
  #elif defined(__MK20DX256__)
    #define BOARD_TYPE "Teensy 3.2" // and Teensy 3.1 (obsolete)
  #elif defined(__MK20DX128__)
    #define BOARD_TYPE "Teensy 3.0"
  #elif defined(__AVR_AT90USB1286__)
    #error Teensy 2.0++ not supported yet
  #elif defined(__AVR_ATmega32U4__)
    #error Teensy 2.0 not supported yet
  #else
    // For Other Boards
    #define BOARD_TYPE      "Unknown Teensy Board"
  #endif
#else
  #error This code is intended to run only on the Teensy boards ! Please check your Tools->Board setting.
#endif

#ifndef BOARD_NAME
  #define BOARD_NAME    BOARD_TYPE
#endif

#define _WEBSOCKETS_LOGLEVEL_     2

#define USE_UIP_ETHERNET        false

// Only one if the following to be true
#define USE_ETHERNET_GENERIC    true
#define USE_ETHERNET_ESP8266    false
#define USE_ETHERNET_ENC        false

#if ( USE_ETHERNET_GENERIC )
  #define WEBSOCKETS_NETWORK_TYPE   NETWORK_W5100
#elif (USE_ETHERNET_ENC)
  #define WEBSOCKETS_NETWORK_TYPE   NETWORK_ETHERNET_ENC
#endif

#if USE_ETHERNET_GENERIC
  #include "Ethernet_Generic.h"
  #warning Using Ethernet_Generic lib

  #define ETHERNET_LARGE_BUFFERS

  #define _ETG_LOGLEVEL_        1

  #define SHIELD_TYPE           "W5x00 using Ethernet_Generic Library"
#elif USE_ETHERNET_ESP8266
  #include "Ethernet_ESP8266.h"
  #warning Using Ethernet_ESP8266 lib
  #define SHIELD_TYPE           "W5x00 using Ethernet_ESP8266 Library"
#elif USE_ETHERNET_ENC
  #include "EthernetENC.h"
  #warning Using EthernetENC lib
  #define SHIELD_TYPE           "ENC28J60 using EthernetENC Library"
#else
  #define USE_ETHERNET_GENERIC  true
  #include "Ethernet.h"
  #warning Using Ethernet_Generic lib
  #define SHIELD_TYPE           "W5x00 using default Ethernet_Generic Library"
#endif

// Default pin 10 to SS/CS
#define USE_THIS_SS_PIN         10


#include <WebSocketsServer_Generic.h>

WebSocketsServer webSocket = WebSocketsServer(81);

// Enter a MAC address and IP address for your controller below.
#define NUMBER_OF_MAC      20

byte mac[][NUMBER_OF_MAC] =
{
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x01 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x02 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x03 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x04 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x05 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x06 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x07 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x08 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x09 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0A },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0B },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0C },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0D },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0E },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0F },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x10 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x11 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x12 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x13 },
  { 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x14 },
};


// Select the IP address according to your local network
IPAddress ip(192, 168, 2, 222);

// Only for W5100
#define SDCARD_CS       4

void webSocketEvent(const uint8_t& num, const WStype_t& type, uint8_t * payload, const size_t& length)
{
  switch (type)
  {
    case WStype_DISCONNECTED:
      //Serial.println( "[" + String(num) + "] Disconnected!");

      break;

    case WStype_CONNECTED:
    {
      Serial.println( "[" + String(num) + "] Connected!");
      //IPAddress ip = webSocket.remoteIP(num);
      //Serial.printf("[%u] Connected from %d.%d.%d.%d url: %s\n", num, ip[0], ip[1], ip[2], ip[3], payload);

      // send message to client
      webSocket.sendTXT(num, "Connected");
    }

    break;

    case WStype_TEXT:
      Serial.println( "[" + String(num) + "] get Text: " + String((char *) payload));

      // send message to client
      webSocket.sendTXT(num, "message here");

      // send data to all connected clients
      webSocket.broadcastTXT("message here");

      break;

    case WStype_BIN:
      Serial.println( "[" + String(num) + "] get binary length: " + String(length));

      //hexdump(payload, length);

      // send message to client
      // webSocket.sendBIN(num, payload, length);

      break;

    default:
      break;
  }
}

void setup()
{
  pinMode(SDCARD_CS, OUTPUT);
  digitalWrite(SDCARD_CS, HIGH); // Deselect the SD card

  // Serial.begin(921600);
  Serial.begin(115200);

  while (!Serial);

  Serial.print("\nStart Teensy_WebSocketServer_W5500 on ");
  Serial.print(BOARD_NAME);
  Serial.print(" with ");
  Serial.println(SHIELD_TYPE);
  Serial.println(WEBSOCKETS_GENERIC_VERSION);

  WSK_LOGWARN3(F("Board :"), BOARD_NAME, F(", setCsPin:"), USE_THIS_SS_PIN);

  WSK_LOGWARN(F("Default SPI pinout:"));
  WSK_LOGWARN1(F("MOSI:"), MOSI);
  WSK_LOGWARN1(F("MISO:"), MISO);
  WSK_LOGWARN1(F("SCK:"),  SCK);
  WSK_LOGWARN1(F("SS:"),   SS);
  WSK_LOGWARN(F("========================="));

#if !(USE_BUILTIN_ETHERNET || USE_UIP_ETHERNET)
  // For other boards, to change if necessary
#if ( USE_ETHERNET_GENERIC  || USE_ETHERNET_ENC )
  // Must use library patch for Ethernet, Ethernet2, EthernetLarge libraries
  Ethernet.init (USE_THIS_SS_PIN);

#endif  //( ( USE_ETHERNET_GENERIC || USE_ETHERNET_ENC )
#endif

  // start the ethernet connection and the server:
  // Use DHCP dynamic IP and random mac
  uint16_t index = millis() % NUMBER_OF_MAC;
  // Use Static IP
  //Ethernet.begin(mac[index], clientIP);
  Ethernet.begin(mac[index]);

  // server address, port and URL
  Serial.print("WebSockets Server @ IP address: ");
  Serial.println(Ethernet.localIP());

  webSocket.begin();
  webSocket.onEvent(webSocketEvent);
}

void loop()
{
  webSocket.loop();
}