When i 'm trying some example sketch from the Ethernet library nothing shows up in the serial monitor.I tried the Ethernet library, Ethernet2 and a custom one named Ethernet_Generic-main. I saw in another post that you have to use the Ethernet.init(5) to select the right pin for the ESP32 but it doesnt change anything for me. I think the code is working because when i go to my router page i can see the W5500 and it has the mac adress i assigned in the code. I just dont understand why nothing is happening. Can somebody help please ??
The board is a : doit esp32 devkit v1
The module is : SPI to Ethernet Hardware TCP/IP W5500 Ethernet Network Module by Robojax
Edit: connected a ENC28J60 to a ESP32 devkit V1
tested with webserver example (connections 23 29 28 5) and uipethernet library
// ENC28J60 tested with ESP32
// pinout https://duino4projects.com/esp32-devkit-v1-pinout/
// connections ENC28J60 to ESP32
// SI to pin GPIO23 MOSI
// SO to pin GPIO19 MISO
// SCK to pin GPIO18 CLK
// CS to PIN GPIO5 - note call to Ethernet.init(5); below
// VCC to 3V3
/* Web Server using a ENC28J60 ethernet shield
A simple web server that shows the value of the analog input pins.
using an Arduino Wiznet Ethernet shield.
Circuit:
* Ethernet shield attached to pins 10, 11, 12, 13
* Analog inputs attached to pins A0 through A5 (optional)
created 18 Dec 2009
by David A. Mellis
modified 9 Apr 2012
by Tom Igoe
modified 02 Sept 2015
by Arturo Guadalupi
*/
#include <UIPEthernet.h>
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
};
IPAddress ip(192, 168, 1, 177);
// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);
void setup() {
// You can use Ethernet.init(pin) to configure the CS pin
Ethernet.init(5); // ESP32
// Open serial communications and wait for port to open:
Serial.begin(115200);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
delay(1000);
Serial.println();
Serial.println("Ethernet WebServer Example");
// start the Ethernet connection and the server:
Ethernet.begin(mac, ip);
// Check for Ethernet hardware present
/*if (Ethernet.hardwareStatus() == EthernetNoHardware) {
Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :(");
while (true) {
delay(1); // do nothing, no point running without Ethernet hardware
}
}
if (Ethernet.linkStatus() == LinkOFF) {
Serial.println("Ethernet cable is not connected.");
}*/
// start the server
server.begin();
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
}
void loop() {
// listen for incoming clients
EthernetClient client = server.available();
if (client) {
Serial.println("new client");
// an http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
Serial.write(c);
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == '\n' && currentLineIsBlank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close"); // the connection will be closed after completion of the response
client.println("Refresh: 5"); // refresh the page automatically every 5 sec
client.println();
client.println("<!DOCTYPE HTML>");
client.println("<html>");
// output the value of each analog input pin
for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
int sensorReading = analogRead(analogChannel);
client.print("analog input ");
client.print(analogChannel);
client.print(" is ");
client.print(sensorReading);
client.println("<br />");
}
client.println("</html>");
break;
}
if (c == '\n') {
// you're starting a new line
currentLineIsBlank = true;
} else if (c != '\r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
client.stop();
Serial.println("client disconnected");
}
}
serial monitor output
Ethernet WebServer Example
server is at 192.168.1.177
new client
GET / HTTP/1.1
Host: 192.168.1.177
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:99.0) Gecko/20100101 Firefox/99.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: en-GB,en;q=0.5
Accept-Encoding: gzip, deflate
DNT: 1
Connection: keep-alive
Upgrade-Insecure-Requests: 1
Cache-Control: max-age=0
client disconnected
webclient displays
I have just tested the ethernetENC library with the ESP32 and ENC28J60 and it works OK
although I used a different device I thought it worthwhile checking the ESP32 pin configuration you used 23,19,18, 5 worked (first time I tested the ENC28J60 with a ESP32)
have you tried Ethernet3 ?
Edit: wireshark is a useful tool for monitor network traffic
Si i tried it but still nothing. The weird thing is that the shield appears on my router page so there must be a connection but the serial monitor is totally blank. Here is the example i<m using
#include <SPI.h>
#include <Ethernet.h>
// Enter a MAC address for your controller below.
// Newer Ethernet shields have a MAC address printed on a sticker on the shield
byte mac[] = {
0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x02
};
// Initialize the Ethernet client library
// with the IP address and port of the server
// that you want to connect to (port 80 is default for HTTP):
EthernetClient client;
Ethernet.init(5);
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
// start the Ethernet connection:
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
// no point in carrying on, so do nothing forevermore:
for (;;)
;
}
// print your local IP address:
printIPAddress();
}
void loop() {
switch (Ethernet.maintain())
{
case 1:
//renewed fail
Serial.println("Error: renewed fail");
break;
case 2:
//renewed success
Serial.println("Renewed success");
//print your local IP address:
printIPAddress();
break;
case 3:
//rebind fail
Serial.println("Error: rebind fail");
break;
case 4:
//rebind success
Serial.println("Rebind success");
//print your local IP address:
printIPAddress();
break;
default:
//nothing happened
break;
}
}
void printIPAddress()
{
Serial.print("My IP address: ");
for (byte thisByte = 0; thisByte < 4; thisByte++) {
// print the value of each byte of the IP address:
Serial.print(Ethernet.localIP()[thisByte], DEC);
Serial.print(".");
}
Serial.println();
}
I'm not sure what this line does : EthernetClient client;
and the object "client" is not use anywhere else in the code.
Now it’s working. I changed the value of the cs_pin directly in the header file and connected the reset pin to make sure it reinitialise to its new default value and it printed the ip adress
