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Tutorials for Arduino Uno with Ethernet Shield

5 years 11 months ago #2500 by iamkeq
Are there any examples of sensor setups using an ethernet shield on perhaps an UNO or are they all just using the ESP8266?

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5 years 11 months ago #2501 by ppecuch
I created this: UNO W5100 DS18B20 Virtual NODE

#include <Ethernet.h>
#include <SPI.h>
#include <Base64.h>
#include <OneWire.h>
#include <DallasTemperature.h>

#define EIOT_USERNAME "****"
#define EIOT_PASSWORD "****"
#define EIOT_IP_ADDRESS "10.0.0.139"
#define EIOT_PORT 8008
#define EIOT_NODE "N6S0"

#define REPORT_INTERVAL 60 // in sec


#define ONE_WIRE_BUS 3 // DS18B20 pin
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature DS18B20(&oneWire);


#define USER_PWD_LEN 40
char unameenc[USER_PWD_LEN];
float oldTemp;

byte mac[] = { **************** };
IPAddress ip(10, 0, 0, 181);

void setup() {

Serial.begin(115200);

lanConnect();

char uname[USER_PWD_LEN];
String str = String(EIOT_USERNAME)+":"+String(EIOT_PASSWORD);
str.toCharArray(uname, USER_PWD_LEN);
memset(unameenc,0,sizeof(unameenc));
base64_encode(unameenc, uname, strlen(uname));
oldTemp = -1;
}

void loop() {
float temp;

do {
DS18B20.requestTemperatures();
temp = DS18B20.getTempCByIndex(0);
Serial.print("Temperature: ");
Serial.println(temp);
} while (temp == 85.0 || temp == (-127.0));

if (temp != oldTemp)
{
sendTeperature(temp);
oldTemp = temp;
}

int cnt = REPORT_INTERVAL;

while(cnt--)
delay(1000);
}

void lanConnect()
{
EthernetClient client;
Serial.print("Connecting");
Ethernet.begin(mac,ip); {
delay(1000);
Serial.print(".");
}

Serial.println("");
Serial.println("Lan connected");
}


void sendTeperature(float temp)
{
EthernetClient client;
while(!client.connect(EIOT_IP_ADDRESS, EIOT_PORT)) {
Serial.println("connection failed");
lanConnect();
}

String url = "";
url += "/Api/EasyIoT/Control/Module/Virtual/"+ String(EIOT_NODE) + "/ControlLevel/"+String(temp); // generate EasIoT server node URL

Serial.print("POST data to URL: ");
Serial.println(url);

client.print(String("POST ") + url + " HTTP/1.1\r\n" +
"Host: " + String(EIOT_IP_ADDRESS) + "\r\n" +
"Connection: close\r\n" +
"Authorization: Basic " + unameenc + " \r\n" +
"Content-Length: 0\r\n" +
"\r\n");

delay(5000);
while(client.available()){
String line = client.readStringUntil('\r');
Serial.print(line);
}

Serial.println();
Serial.println("Connection closed");
}
The following user(s) said Thank You: Adamyno, zoli

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