Hello,
I am using an Arduino Ethernet Shield W5100 and I've been having trouble getting it connected to the WiFi. have been getting the following error code "Failed to configure Ethernet using DHCP".
Below is the code I'm running, its an online attendance system using google spreadsheet, pushingbox and an RIFD tag.
/* Arduino Code which sends data to google spreadsheet */
#include<SPI.h>
#include<MFRC522.h>
#include <Ethernet.h>
#define SS_PIN 4 //FOR RFID SS PIN BECASUSE WE ARE USING BOTH ETHERNET SHIELD AND RS-522
#define RST_PIN 9
#define No_Of_Card 3
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
char server[] = "api.pushingbox.com"; //YOUR SERVER
IPAddress ip(192, 168, 1, 105);
EthernetClient client;
MFRC522 rfid(SS_PIN,RST_PIN);
MFRC522::MIFARE_Key key;
byte id[No_Of_Card][4]={
{142,76,58,42}, //RFID NO-1
{153,178,60,64}, //RFID NO-2
{141,764,60,94} //RFID NO-3
};
byte id_temp[3][3];
byte i;
int j=0;
// the setup function runs once when you press reset or power the board
void setup(){
Serial.begin(9600);
SPI.begin();
rfid.PCD_Init();
for(byte i=0;i<6;i++)
{
key.keyByte[i]=0xFF;
}
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
Ethernet.begin(mac, ip);
}
delay(1000);
Serial.println("connecting...");
}
// the loop function runs over and over again forever
void loop(){
int m=0;
if(!rfid.PICC_IsNewCardPresent())
return;
if(!rfid.PICC_ReadCardSerial())
return;
for(i=0;i<4;i++)
{
id_temp[0][i]=rfid.uid.uidByte[i];
delay(50);
}
for(i=0;i<No_Of_Card;i++)
{
if(id[i][0]==id_temp[0][0])
{
if(id[i][1]==id_temp[0][1])
{
if(id[i][2]==id_temp[0][2])
{
if(id[i][3]==id_temp[0][3])
{
Serial.print("your card no :");
for(int s=0;s<4;s++)
{
Serial.print(rfid.uid.uidByte[s]);
Serial.print(" ");
}
Serial.println("\nValid Person");
Sending_To_spreadsheet();
j=0;
rfid.PICC_HaltA(); rfid.PCD_StopCrypto1(); return;
}
}
}
}
else
{j++;
if(j==No_Of_Card)
{
Serial.println("Not a valid Person");
Sending_To_spreadsheet();
j=0;
}
}
}
// Halt PICC
rfid.PICC_HaltA();
// Stop encryption on PCD
rfid.PCD_StopCrypto1();
}
void Sending_To_spreadsheet() //CONNECTING WITH MYSQL
{
if (client.connect(server, 80)) {
Serial.println("connected");
// Make a HTTP request:
client.print("GET /pushingbox?devid=v06BF79733746BBF&Allowed_Members="); //YOUR URL
if(j!=No_Of_Card)
{
client.print('1');
// Serial.print('1');
}
else
{
client.print('0');
}
client.print("&Member_ID=");
for(int s=0;s<4;s++)
{
client.print(rfid.uid.uidByte[s]);
}
client.print(" "); //SPACE BEFORE HTTP/1.1
client.print("HTTP/1.1");
client.println();
client.println("Host: api.pushingbox.com");
client.println("Connection: close");
client.println();
} else {
// if you didn't get a connection to the server:
Serial.println("connection failed");
}
}
I have tried using the following DHCP address printer but, the same error popped out anyway.
/*
DHCP-based IP printer
This sketch uses the DHCP extensions to the Ethernet library
to get an IP address via DHCP and print the address obtained.
using an Arduino Wiznet Ethernet shield.
Circuit:
Ethernet shield attached to pins 10, 11, 12, 13
created 12 April 2011
modified 9 Apr 2012
by Tom Igoe
modified 02 Sept 2015
by Arturo Guadalupi
*/
#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
};
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(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
}
// start the Ethernet connection:
Serial.println("Initialize Ethernet with DHCP:");
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
if (Ethernet.hardwareStatus() == EthernetNoHardware) {
Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :(");
} else if (Ethernet.linkStatus() == LinkOFF) {
Serial.println("Ethernet cable is not connected.");
}
// no point in carrying on, so do nothing forevermore:
while (true) {
delay(1);
}
}
// print your local IP address:
Serial.print("My IP address: ");
Serial.println(Ethernet.localIP());
}
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:
Serial.print("My IP address: ");
Serial.println(Ethernet.localIP());
break;
case 3:
//rebind fail
Serial.println("Error: rebind fail");
break;
case 4:
//rebind success
Serial.println("Rebind success");
//print your local IP address:
Serial.print("My IP address: ");
Serial.println(Ethernet.localIP());
break;
default:
//nothing happened
break;
}
}
Any advice on this would be much appreciated. Thank you.