WebClientRepeating.ino

/****************************************************************************************************************************
  WebClientRepeating.ino

  Ethernet_Generic is a library for the W5x00 Ethernet shields trying to merge the good features of
  previous Ethernet libraries

  Built by Khoi Hoang https://github.com/khoih-prog/Ethernet_Generic
 *****************************************************************************************************************************/
/*
   The Arduino board communicates with the shield using the SPI bus. This is on digital pins 11, 12, and 13 on the Uno
   and pins 50, 51, and 52 on the Mega. On both boards, pin 10 is used as SS. On the Mega, the hardware SS pin, 53,
   is not used to select the Ethernet controller chip, but it must be kept as an output or the SPI interface won't work.
*/

#include "defines.h"

char server[] = "arduino.tips";

unsigned long lastConnectionTime = 0;         // last time you connected to the server, in milliseconds
const unsigned long postingInterval = 10000L; // delay between updates, in milliseconds

// Initialize the Web client object
EthernetClient client;

// this method makes a HTTP connection to the server
void httpRequest()
{
  SerialDebug.println();

  // close any connection before send a new request
  // this will free the socket on the WiFi shield
  client.stop();

  // if there's a successful connection
  if (client.connect(server, 80))
  {
    SerialDebug.println(F("Connecting..."));

    // send the HTTP PUT request
    client.println(F("GET /asciilogo.txt HTTP/1.1"));
    client.println(F("Host: arduino.tips"));
    client.println(F("Connection: close"));
    client.println();

    // note the time that the connection was made
    lastConnectionTime = millis();
  }
  else
  {
    // if you couldn't make a connection
    SerialDebug.println(F("Connection failed"));
  }
}

void setup()
{
  SerialDebug.begin(115200);

  while (!Serial && millis() < 5000);

  delay(500);

  SerialDebug.print("\nStarting WebClientRepeating on ");
  SerialDebug.print(BOARD_NAME);
  SerialDebug.print(F(" with "));
  SerialDebug.println(SHIELD_TYPE);
  SerialDebug.println(ETHERNET_GENERIC_VERSION);

#if (USING_SPI2)
#if defined(CUR_PIN_MISO)
  ETG_LOGWARN(F("Default SPI pinout:"));
  ETG_LOGWARN1(F("MOSI:"), CUR_PIN_MOSI);
  ETG_LOGWARN1(F("MISO:"), CUR_PIN_MISO);
  ETG_LOGWARN1(F("SCK:"),  CUR_PIN_SCK);
  ETG_LOGWARN1(F("SS:"),   CUR_PIN_SS);
  ETG_LOGWARN(F("========================="));
#endif
#else
  ETG_LOGWARN(F("Default SPI pinout:"));
  ETG_LOGWARN1(F("MOSI:"), MOSI);
  ETG_LOGWARN1(F("MISO:"), MISO);
  ETG_LOGWARN1(F("SCK:"),  SCK);
  ETG_LOGWARN1(F("SS:"),   SS);
  ETG_LOGWARN(F("========================="));
#endif

#if defined(ESP8266)
  // For ESP8266, change for other boards if necessary
#ifndef USE_THIS_SS_PIN
#define USE_THIS_SS_PIN   D2    // For ESP8266
#endif

  ETG_LOGWARN1(F("ESP8266 setCsPin:"), USE_THIS_SS_PIN);

  // For ESP8266
  // Pin                D0(GPIO16)    D1(GPIO5)    D2(GPIO4)    D3(GPIO0)    D4(GPIO2)    D8
  // Ethernet_Generic   X                 X            X            X            X        0
  // D2 is safe to used for Ethernet_Generic libs
  //Ethernet.setCsPin (USE_THIS_SS_PIN);
  Ethernet.init (USE_THIS_SS_PIN);

#elif defined(ESP32)

  // You can use Ethernet.init(pin) to configure the CS pin
  //Ethernet.init(10);  // Most Arduino shields
  //Ethernet.init(5);   // MKR ETH shield
  //Ethernet.init(0);   // Teensy 2.0
  //Ethernet.init(20);  // Teensy++ 2.0
  //Ethernet.init(15);  // ESP8266 with Adafruit Featherwing Ethernet
  //Ethernet.init(33);  // ESP32 with Adafruit Featherwing Ethernet

#ifndef USE_THIS_SS_PIN
#define USE_THIS_SS_PIN   5   //22    // For ESP32
#endif

  ETG_LOGWARN1(F("ESP32 setCsPin:"), USE_THIS_SS_PIN);

  // Must use library patch for Ethernet, EthernetLarge libraries
  // ESP32 => GPIO2,4,5,13,15,21,22 OK with Ethernet, Ethernet2, EthernetLarge
  // ESP32 => GPIO2,4,5,15,21,22 OK with Ethernet3

  //Ethernet.setCsPin (USE_THIS_SS_PIN);
  Ethernet.init (USE_THIS_SS_PIN);

#elif ETHERNET_USE_RPIPICO

  pinMode(USE_THIS_SS_PIN, OUTPUT);
  digitalWrite(USE_THIS_SS_PIN, HIGH);

  // ETHERNET_USE_RPIPICO, use default SS = 5 or 17
#ifndef USE_THIS_SS_PIN
#if defined(ARDUINO_ARCH_MBED)
#define USE_THIS_SS_PIN   17     // For Arduino Mbed core
#else
#define USE_THIS_SS_PIN   17    // For E.Philhower core
#endif
#endif

  ETG_LOGWARN1(F("RPIPICO setCsPin:"), USE_THIS_SS_PIN);

  // Must use library patch for Ethernet, EthernetLarge libraries
  // For RPI Pico using Arduino Mbed RP2040 core
  // SCK: GPIO2,  MOSI: GPIO3, MISO: GPIO4, SS/CS: GPIO5
  // For RPI Pico using E. Philhower RP2040 core
  // SCK: GPIO18,  MOSI: GPIO19, MISO: GPIO16, SS/CS: GPIO17
  // Default pin 5/17 to SS/CS

  //Ethernet.setCsPin (USE_THIS_SS_PIN);
  Ethernet.init (USE_THIS_SS_PIN);

#else   //defined(ESP8266)
  // unknown board, do nothing, use default SS = 10
#ifndef USE_THIS_SS_PIN
#define USE_THIS_SS_PIN   10    // For other boards
#endif

#if defined(BOARD_NAME)
  ETG_LOGWARN3(F("Board :"), BOARD_NAME, F(", setCsPin:"), USE_THIS_SS_PIN);
#else
  ETG_LOGWARN1(F("Unknown board setCsPin:"), USE_THIS_SS_PIN);
#endif

  // For other boards, to change if necessary
  Ethernet.init (USE_THIS_SS_PIN);

#endif    // defined(ESP8266)

  // 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], ip);
  Ethernet.begin(mac[index]);

  //SPIClass SPI2(HSPI);
  //Ethernet.begin(mac[index], &SPI2);

  // Just info to know how to connect correctly
  // To change for other SPI
#if defined(CUR_PIN_MISO)
  ETG_LOGWARN(F("Currently Used SPI pinout:"));
  ETG_LOGWARN1(F("MOSI:"), CUR_PIN_MOSI);
  ETG_LOGWARN1(F("MISO:"), CUR_PIN_MISO);
  ETG_LOGWARN1(F("SCK:"),  CUR_PIN_SCK);
  ETG_LOGWARN1(F("SS:"),   CUR_PIN_SS);
  ETG_LOGWARN(F("========================="));
#else
  ETG_LOGWARN(F("Currently Used SPI pinout:"));
  ETG_LOGWARN1(F("MOSI:"), MOSI);
  ETG_LOGWARN1(F("MISO:"), MISO);
  ETG_LOGWARN1(F("SCK:"),  SCK);
  ETG_LOGWARN1(F("SS:"),   SS);
  ETG_LOGWARN(F("========================="));
#endif

  SerialDebug.print(F("Using mac index = "));
  SerialDebug.println(index);

  SerialDebug.print(F("Connected! IP address: "));
  SerialDebug.println(Ethernet.localIP());

#if !(USING_CUSTOM_SPI)

  if ( (Ethernet.getChip() == w5500) || (Ethernet.getChip() == w6100) || (Ethernet.getAltChip() == w5100s) )
  {
    if (Ethernet.getChip() == w6100)
      SerialDebug.print(F("W6100 => "));
    else if (Ethernet.getChip() == w5500)
      SerialDebug.print(F("W6100 => "));
    else
      SerialDebug.print(F("W5100S => "));
    
    SerialDebug.print(F("Speed: "));
    SerialDebug.print(Ethernet.speedReport());
    SerialDebug.print(F(", Duplex: "));
    SerialDebug.print(Ethernet.duplexReport());
    SerialDebug.print(F(", Link status: "));
    SerialDebug.println(Ethernet.linkReport());
  }

#endif
}

void loop()
{
  // if there's incoming data from the net connection send it out the serial port
  // this is for debugging purposes only
  while (client.available())
  {
    char c = client.read();
    SerialDebug.write(c);
    SerialDebug.flush();
  }

  // if 10 seconds have passed since your last connection,
  // then connect again and send data
  if (millis() - lastConnectionTime > postingInterval)
  {
    httpRequest();
  }
}