Good Day Everyone.
I am having a hard time configuring the ethernet shield.
I mounted the ENC28J60 Ethernet Shield on the Arduino Mega 2560.
I connected the USB port of the Arduino to the USB port of my PC,
I connected the ethernet port of the Ethernet Shield to a LAN Port of a TP-Link Router with an IP Address of 192.168.0.1 and has a DHCP starting address from .100 to .200
I put uploaded the code that I get from to the Arduino Module: https://www.arduino.cc/en/Reference/EthernetClient
#include <Ethernet.h>
#include <SPI.h>
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] = { 192, 168, 0, 100 };
byte server[] = { 64, 233, 187, 99 }; // Google
EthernetClient client;
void setup()
{
Ethernet.begin(mac, ip);
Serial.begin(9600);
delay(1000);
Serial.println("connecting...");
if (client.connect(server, 80)) {
Serial.println("connected");
client.println("GET /search?q=arduino HTTP/1.0");
client.println();
} else {
Serial.println("connection failed");
}
}
void loop()
{
if (client.available()) {
char c = client.read();
Serial.print(c);
}
if (!client.connected()) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
for(;;)
;
}
}
And then, from the serial window of Arduino IDE, I am getting
connecting...
connection failed
disconnecting...
I also tried some similar codes from above, some are outputting the shields IP, but still, I get the same problem, the Ethernet Shield does not output an IP Address or says "connected".
I also tried both straight-through and cross-over cables.
Please Help.
Thanks.
In your code:
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
Must match your Ethernet Shield mac address.
Maybe try letting your router provide an IP address via DHCP. To do that, just change the line in your setup routine to Ethernet.begin(mac);
Related
I need to send data from Arduino to a local server that will run on my computer. The computer is connected to Wi-Fi, Arduino Uno with Eternet Shield via a cable to the router.
I took a standard sketch from the WebClient examples and changed my IPv4 address, which I found through ipconfig. This should fix the problem(as I read here), but the port monitor gives "connection failure". What could be the problem?
#include <SPI.h>
#include <Ethernet.h>
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress server(192, 168, 1, 4); // numeric IP for Google (no DNS)
//char server[] = "localhost"; // name address for Google (using DNS)
IPAddress ip(192, 168, 1, 229);
EthernetClient client;
void setup() {
Serial.begin(9600);
Ethernet.init(4);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo 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:
// try to congifure using IP address instead of DHCP:
Ethernet.begin(mac, ip);
}
// give the Ethernet shield a second to initialize:
delay(1000);
Serial.println("connecting...");
// if you get a connection, report back via serial:
if (client.connect(server, 3000)) {
Serial.println("connected");
// Make a HTTP request:
client.println("GET /search?q=arduino HTTP/1.1");
client.println("Host: localhost");
client.println("Connection: close");
client.println();
}
else {
// kf you didn't get a connection to the server:
Serial.println("connection failed");
}
}
void loop()
{
// if there are incoming bytes available
// from the server, read them and print them:
if (client.available()) {
char c = client.read();
Serial.print(c);
}
// if the server's disconnected, stop the client:
if (!client.connected()) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
// do nothing forevermore:
while (true);
}
}
Should have disabled the Windows Firewall
Simple Ethernet communication between two Arduino boards. I used two Arduino UNO boards, Two Arduino Ethernet Shields.
Here is my Server Code
//Server
#include <SPI.h>
#include <Ethernet.h>
// network configuration. gateway and subnet are optional.
// the media access control (ethernet hardware) address for the shield:
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
//the IP address for the shield:
byte ip[] = { 192,168,1,180 };
// the router's gateway address:
byte gateway[] = { 192, 168, 1, 1 };
// the subnet:
byte subnet[] = { 255, 255, 255, 0 };
EthernetServer server = EthernetServer(10001);
void setup()
{
// initialize the ethernet device
Ethernet.begin(mac, ip, gateway, subnet);
// start listening for clients
server.begin();
}
void loop()
{
// if an incoming client connects, there will be bytes available to read:
EthernetClient client = server.available();
if (client == true) {
// read bytes from the incoming client and write them back
// to any clients connected to the server:
server.write(client.read());
}
}
Here is my Client Code
//Client
#include <Ethernet.h>
#include <SPI.h>
byte mac[] = {0xDE,0xAD,0xBE,0xEF,0xFE,0xEC};
IPAddress ip(192,168,1,177);
IPAddress server(192,168,1,180);
EthernetClient client(10001);
void setup()
{
Ethernet.begin(mac, ip);
Serial.begin(9600);
delay(1000);
Serial.println("connecting...");
if (client.connect(server, 10001)) {
Serial.println("connected");
client.println("GET /search?q=arduino HTTP/1.0");
client.println();
} else {
Serial.println("connection failed");
}
}
void loop()
{
if (client.available()) {
char c = client.read();
Serial.print(c);
}
if (!client.connected()) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
for(;;)
;
}
}
I input those two codes to two Arduino boards. Wiring and other connection are correct and reliable.
But I got this output from client serial monitor
connecting...
connection failed
disconnecting.
According to my view, error may happen in client code. Can you help me to find the error?
How do I reference the address of the DNS serverIP, subnetIP, gatewayIP ?
As you can see from teh code below, I have tried but all I geet is the following error,
"class EthernetClass has no member called subnet".
#include <SPI.h>
#include <Ethernet.h>
// Network configuration
// Note : DNS server, gateway and subnet are optional.
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
// The IP address of Arduino Ethernet shield.
IPAddress myLocalIP(192, 168, 100, 2);
// The DNS server IP.
IPAddress dnsServer(192, 168, 100, 1);
// The router's gateway IP address.
IPAddress gateway(192, 168, 0, 1);
// the subnet:
IPAddress subnet(255, 255, 255, 0);
void setup() {
Serial.begin(9600);
Ethernet.begin(mac, myLocalIP, subnet); // Initialize the ethernet device
// Ethernet.begin(mac, ip, dnServer, gateway, subnet);
Serial.print("Local IP = "); // Print out the IP address of the shield.
Serial.println(Ethernet.localIP());
Serial.print("DNS Address = ");
Serial.println(Ethernet.IPAddress.subnet() );
} // End setup.
void loop()
{
} // End loop.
Wallek876, Thank you for the info.
I have added the others as well, namely subnetMask, gatewayIP however when I used the documented method (as per your link) to print the MAC address - namely - Ethernet.MACAddress(macBuffer); I got an error.
The documented code - (copied from the documentation) is as follows;
#include <SPI.h>
#include <Ethernet.h>
byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
IPAddress ip(10, 0, 0, 177);
void setup() {
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Ethernet.begin(mac, ip);
byte macBuffer[6]; // create a buffer to hold the MAC address
Ethernet.MACAddress(macBuffer); // fill the buffer
Serial.print("The MAC address is: ");
for (byte octet = 0; octet < 6; octet++) {
Serial.print(macBuffer[octet], HEX);
if (octet < 5) {
Serial.print('-');
}
}
}
void loop () {}
The error being on line Ethernet.MACAddress(macBuffer);
MACAddress not defined.
I tried several other solutions all to no avail - so some suggetions would be greatefully received.
I'm using an arduino and an Ethernet shield to upload data to a server.
Lately i changed from using a local database to use a web hosting service (000webhost) but i can't make it work, no errors are shown in the Arduino IDE but it just stops in the line where it says "MAKING INSERTION".
Everything was working fine when i had the database locally.
When i enter the url directly into the browser
mythesisinacap.000webhostapp.com/writemydata.php?value=0 it works fine inserting the apropriate value into the database...so that means that there's nothing wrong with the php file in the server.
Here's my code.
#include <Ethernet.h>
int isparked;
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
};
// Enter the IP address for Arduino
// Be careful to use , insetead of . when you enter the address here
IPAddress ip(192, 168, 0, 170);
int vcc = 5; //attach pin 2 to vcc
int trig = 6; // attach pin 3 to Trig
int echo = 7; //attach pin 4 to Echo
int gnd = 8; //attach pin 5 to GND
char server[] = "mythesisinacap.000webhostapp.com";
// Initialize the Ethernet server library
EthernetClient client(80);
void setup()
{
isparked=0;
// start the Ethernet connection and the server:
Ethernet.begin(mac, ip);
}
void loop() {
if (client.connect(server, 80))
{
Serial.print("CONNECTED");
Serial.println();
Serial.print("MAKING INSERTION");
Serial.println();
client.print("GET /writemydata.php?value=");
client.print(isparked5);
client.println(" HTTP/1.1");
client.println("Host: mythesisinacap.000webhostapp.com");
client.println("Connection: close");
client.println();
client.println();
client.stop();
}
else
{
Serial.print("NO CONNECTION");
}
}
}
}
}
Serial.println();
Serial.print("FINNISH LOOPING");
Serial.println();
}
Ok i finally got it to work with my web hosted database, i used this example from github and adapted it to my case, now i'll have to add my sensor logic and calculation.
https://github.com/adafruit/Ethernet2/blob/master/examples/WebClient/WebClient.ino
#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[] = { 0xDE, 0xDD, 0xBE, 0xEF, 0xFE, 0xED };
char server[] = "mythesis2017.000webhostapp.com"; // name address for Google (using DNS)
// Set the static IP address to use if the DHCP fails to assign
IPAddress ip(192, 168, 0, 177);
// 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;
void setup()
{
}
void loop()
{
// if there are incoming bytes available
// from the server, read them and print them:
if (client.available()) {
char c = client.read();
Serial.print(c);
}
// if the server's disconnected, stop the client:
if (!client.connected()) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
delay(10000);
insert();
}
}
void insert()
{
// 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
}
// start the Ethernet connection:
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
// try to congifure using IP address instead of DHCP:
Ethernet.begin(mac, ip);
}
// give the Ethernet shield a second to initialize:
delay(1000);
Serial.println("connecting...");
// if you get a connection, report back via serial:
if (client.connect(server, 80))
{
Serial.println("connected");
// Make a HTTP request:
client.println("GET /writemydata.php?val=1 HTTP/1.1");
client.println("Host: mythesis2017.000webhostapp.com");
client.println("Connection: close");
client.println();
}
else
{
// if you didn't get a connection to the server:
Serial.println("connection failed");
}
}
I am trying to use Ethernet module ENC28J60 (http://www.amazon.com/ENC28J60-Ethernet-Network-Module-STM32/dp/B008B4QIV2) and SD Card module in single project. I have to read data from the network and write them into the micro sd card.
How can I achieve this? I am getting following output from by sketch below
initialization done.
DONE Ethernet as well with IP: 255.255.255.255
SD card is initialized correctly, but Ethernet is not.
I have used pin 10,4 for CS of Ethernet, SD card respectively.
Program is as below
#include "SD.h"
#include "SPI.h"
#include "Ethernet.h"
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192,168,1,200);
IPAddress gateway(192,168,1,99);
IPAddress mask(255,255,255,0);
//File myFile;
EthernetServer server(80);
void setup()
{
Serial.begin(9600);
if (!SD.begin(4)) {
Serial.println("initialization failed!");
return;
}else {
Serial.println("initialization done.");
}
Ethernet.begin(mac, ip,gateway,gateway,mask);
server.begin();
delay(5000);
Serial.print("DONE Ethernet as well with IP: ");
Serial.println(Ethernet.localIP());
}
void loop(){
//todo
}
Just declare both CS pins as output. It will work.