try this webserver works on a UNO OK so should work on a Pro Mini
note CS is on pin 10 so you need to change the ini() setting or your circuit
/* Web Server using a ENC28J60 ethernet shield
https://github.com/UIPEthernet/UIPEthernet
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
*/
// connections UNO, Feather 32u4, Due, MKRFOX, ESP32
// ENC28J60 CS UNO 10 CS 32u4 D10 10 MKR D5 ESP32 CS GPIO5 setup with Ethernet.init()
// ENC28J60 SO UNO 12 MISO 32u4 MISO 14 MKR MISO D10 ESP32 MISO GPIO19
// ENC28J60 SI UNO 11 MOSI 32u4 MOSI 16 MKR MOSI D8 ESP32 MOSI GPIO23
// ENC28J60 SCK UNO 13 SCK 32u4 SCK 15 MKR SCK D9 ESP32 CLK GPIO18
// ENC28J60 RST UNO RES not connected
// ENC28J60 VCC UNO 3.3V 32u4 3.3V MKR 3.3V ESP32 3.3V
// ENC28J60 GND UNO GND 32u4 GND MKR GND ESP32 GND
// ENC28J60 INT not connected
// DUE is similar to UNO except use SPI pins (not pins 11 12 13)
//#include <UIPEthernet.h>
#include <EthernetENC.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(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(5); // ESP32
//Ethernet.init(11); // ESP8266 with Adafruit Featherwing Ethernet
// 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
}
}
delay(2000); // added otherwise "Ethernet cable not connected" is displayed on some micros
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");
}
}
the idea is to use the Pro Mini to test each module in turn
the code of post 3 is a simple test of the enc28j60 network module
I have checked and it works with a Pro Mini 5V, e.g.
Ethernet WebServer Example
server is at 192.168.1.177
new client
GET / HTTP/1.1
Host: 192.168.1.177
Connection: keep-alive
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Sec-Purpose: prefetch;prerender
Purpose: prefetch
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7
Accept-Encoding: gzip, deflate
Accept-Language: en-GB,en-US;q=0.9,en;q=0.8
client disconnected
web client display ADC values
do you already have the enc28j60 working?
if so what are you planning to test next?
once you know all the modules work independently you can start putting them together
