Hi there,
I am trying to use an ESP32 with the EthernetENC library. The script is an adapted version of the original Ethernet/WebServer:
/*
Web Server
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
*/
// PINS
// MOSI: 23
// MISO: 19
// SCK: 18
// CS: 5 (15 panw)
#include <SPI.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, 100, 198);
// 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 mdelay(unsigned long milliseconds) {
const unsigned d = 1;
while (milliseconds > d) {
Ethernet.maintain();
delay(d);
milliseconds -= d;
}
Ethernet.maintain();
delay(milliseconds);
}
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(5); // ESP8266 with Adafruit Featherwing Ethernet
//Ethernet.init(33); // ESP32 with Adafruit Featherwing Ethernet
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
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) {
mdelay(1); // do nothing, no point running without Ethernet hardware
}
}
// if (Ethernet.linkStatus() == LinkOFF) {
// delay(1000);
// if (Ethernet.linkStatus() == LinkOFF) {
// Serial.println("Ethernet cable is not connected.");
// }
// }
while (Ethernet.linkStatus() == LinkOFF) {
Serial.println("Ethernet cable is not connected.");
mdelay(500);
}
Serial.println("Ethernet cable 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
mdelay(1);
// close the connection:
client.stop();
Serial.println("client disconnected");
}
}
The pin connections are the following:
MOSI: 23
MISO: 19
SCK: 18
CS: 5
When running the script, I get the following output:
Ethernet WebServer Example
Ethernet cable is not connected.
Ethernet cable connected!
server is at 192.168.100.198
However, the device hasn't really acquired an IP. The device is not showing up when logging into the router's admin page, and the web page is not accessible.
Any clues would be much appreciated!