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WT32-ETH01-wired-webserver-dhcp.ino
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WT32-ETH01-wired-webserver-dhcp.ino
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// tested works with wt32-eth01 LAN 8720
// dhcp webserver wired rj45
// webpage shows button when pressed random data is displayed
// programming WT32-ETH01 is not going well with my FTDI usb thingy
// lots off errors and sometimes it programs
// https://github.com/ldijkman/WT32-ETH01-LAN-8720-RJ45-/blob/main/wt32prog.jpg
// https://github.com/ldijkman/WT32-ETH01-LAN-8720-RJ45-
// file from https://github.com/espressif/arduino-esp32/issues/3821
/*
Copyright statement: This article is the original article of the CSDN blogger "Naisu_kun",
which follows the CC 4.0 BY-SA copyright agreement.
For reprinting, please attach the original source link and this statement.
Original link：https://blog.csdn.net/Naisu_kun/article/details/88572129
- Explanation of the code and other parameters: see the link above.
- Note: Original language: Chinese (You can use the Google translator to read English, or another language)
Copyright 2021 Dirk Luberth Dijkman Bangert 30 1619GJ Andijk The Netherlands
GNU General Public License,
which basically means that you may freely copy, change, and distribute it,
but you may not impose any restrictions on further distribution,
and you must make the source code available.
All above must be included in any redistribution
*/
#include <ETH.h> // quote to use ETH
#include <WiFi.h>
#include <WebServer.h> // Introduce corresponding libraries
#define ETH_ADDR 1
#define ETH_POWER_PIN 16//-1 //16 // Do not use it, it can cause conflict during the software reset.
#define ETH_POWER_PIN_ALTERNATIVE 16 //17
#define ETH_MDC_PIN 23
#define ETH_MDIO_PIN 18
#define ETH_TYPE ETH_PHY_LAN8720
#define ETH_CLK_MODE ETH_CLOCK_GPIO17_OUT // ETH_CLOCK_GPIO0_IN
IPAddress local_ip(192, 168, 178, 112);
IPAddress gateway(192, 168, 1, 1);
IPAddress subnet(255, 255, 255, 0);
IPAddress dns1(8, 8, 8, 8);
IPAddress dns2 = (uint32_t)0x00000000;
// Web page
String myhtmlPage =
String("") + "\r\n" +
"<html>" + "\r\n" +
"<head>" + "\r\n" +
" <title>ESP32 WebServer Test</title>" + "\r\n" +
" <script>" + "\r\n" +
" function getData() {" + "\r\n" +
" var xmlhttp;" + "\r\n" +
" if (window.XMLHttpRequest) {" + "\r\n" +
" xmlhttp = new XMLHttpRequest();" + "\r\n" +
" }" + "\r\n" +
" else {" + "\r\n" +
" xmlhttp = new ActiveXObject(\"Microsoft.XMLHTTP\");" + "\r\n" +
" }" + "\r\n" +
" xmlhttp.onreadystatechange = function() {" + "\r\n" +
" if (this.readyState == 4 && this.status == 200) {" + "\r\n" +
" document.getElementById(\"txtRandomData\").innerHTML = this.responseText;" + "\r\n" +
" }" + "\r\n" +
" };" + "\r\n" +
" xmlhttp.open(\"GET\", \"getRandomData\", true); " + "\r\n" +
" xmlhttp.send();" + "\r\n" +
" }" + "\r\n" +
" </script>" + "\r\n" +
"</head>" + "\r\n" +
"<body>" + "\r\n" +
" <div id=\"txtRandomData\">Unkwon</div>" + "\r\n" +
" <input type=\"button\" value=\"random\" onclick=\"getData()\">" + "\r\n" +
"</body>" + "\r\n" +
"</html>";
WebServer server(80); // Declare the WebServer object
void handleRoot() // Callback
{
server.send(200, "text/html", myhtmlPage); //!!! Note that returning to the web page requires "text / html" !!!
}
void handleAjax() // Callback
{
String message = "Random data: ";
message += String(random(10000)); // Get random number
server.send(200, "text/plain", message); // Send message back to page
}
static bool eth_connected = false;
void WiFiEvent(WiFiEvent_t event)
{
switch (event) {
case SYSTEM_EVENT_ETH_START:
Serial.println("ETH Started");
//set eth hostname here
ETH.setHostname("esp32-ethernet");
break;
case SYSTEM_EVENT_ETH_CONNECTED:
Serial.println("ETH Connected");
break;
case SYSTEM_EVENT_ETH_GOT_IP:
Serial.print("ETH MAC: ");
Serial.print(ETH.macAddress());
Serial.print(", IPv4: ");
Serial.print(ETH.localIP());
if (ETH.fullDuplex()) {
Serial.print(", FULL_DUPLEX");
}
Serial.print(", ");
Serial.print(ETH.linkSpeed());
Serial.println("Mbps");
eth_connected = true;
break;
case SYSTEM_EVENT_ETH_DISCONNECTED:
Serial.println("ETH Disconnected");
eth_connected = false;
break;
case SYSTEM_EVENT_ETH_STOP:
Serial.println("ETH Stopped");
eth_connected = false;
break;
default:
break;
}
}
void setup() {
pinMode(ETH_POWER_PIN_ALTERNATIVE, OUTPUT);
digitalWrite(ETH_POWER_PIN_ALTERNATIVE, HIGH);
Serial.begin(115200);
delay(2500);
Serial.println("hello");
WiFi.onEvent(WiFiEvent);
ETH.begin(ETH_ADDR, ETH_POWER_PIN, ETH_MDC_PIN, ETH_MDIO_PIN, ETH_TYPE, ETH_CLK_MODE); // Enable ETH
//ETH.config(local_ip, gateway, subnet, dns1, dns2); // Static IP, leave without this line to get IP via DHCP
while(!((uint32_t)ETH.localIP())){}; // Waiting for IP (leave this line group to get IP via DHCP)
server.on("/", handleRoot); // Register link and callback function
server.on("/getRandomData", HTTP_GET, handleAjax); // Request and callback function of the get method sent by ajax in the registration web page
server.begin(); // Start server
Serial.println("Web server started");
}
void loop() {
server.handleClient(); // Handling requests from clients
}
// A Penny for Sharing My Thoughts?
// www.paypal.me/LDijkman