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Using Arduino => Programming Questions => Topic started by: hachani on Feb 14, 2017, 04:01 pm

Title: :o HELP arduino + Ultrasonic+ Shield Ethernet
Post by: hachani on Feb 14, 2017, 04:01 pm
Hey all i have problem i found code source and look good but when i try used to display data of ultrasonic using ethernet shield arduino on web page...Doesn't Work

THIS IS CODE
how i can fix that ??  :o

Code: [Select]
#include <SPI.h>
#include <Ethernet.h>
#define trigPin 5
#define echoPin 6

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };   
byte ip[] = { 192, 168, 1, 178 };                     
byte gateway[] = { 192, 168, 1, 1 };                 
byte subnet[] = { 255, 255, 255, 0 };         

void setup() {
pinMode(trigPin, OUTPUT); 
pinMode(echoPin, INPUT); 
Serial.begin (9600);
  Ethernet.begin(mac, ip, gateway, subnet);
  delay(2000);           
  Serial.println("connecting...");
}

void loop() {
  String s;
  s=misura();
  Serial.println(s);
  delay(2000);
}

String misura()
{
   int duration, distance;
  String risultato;
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);   
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10); 
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH); 
  distance = (duration/2) / 29.1;     
   risultato="cm: ";
    risultato.concat(distance);

Title: Re: :o HELP arduino + Ultrasonic+ Shield Ethernet
Post by: PaulS on Feb 14, 2017, 04:08 pm
There is nothing in your code to make the Arduino act as either a client (making requests) or server (responding to requests). Therefore, it is not surprising that the data sent to the serial port is not visible on a web page.
Title: Re: :o HELP arduino + Ultrasonic+ Shield Ethernet
Post by: hachani on Feb 14, 2017, 04:14 pm
so how i make it ?? how i can make my data display on web page ??
Title: Re: :o HELP arduino + Ultrasonic+ Shield Ethernet
Post by: PaulS on Feb 14, 2017, 04:16 pm
Quote
how i can make my data display on web page ??
The Arduino has to act as a server. Start with the Ethernet server example.
Title: Re: :o HELP arduino + Ultrasonic+ Shield Ethernet
Post by: hachani on Feb 14, 2017, 04:53 pm
you mean start with that example ??

Code: [Select]
#include <SPI.h>
#include <Ethernet.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() {
  // 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 and the server:
  Ethernet.begin(mac, ip);
  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");
  }
}
Title: Re: :o HELP arduino + Ultrasonic+ Shield Ethernet
Post by: PaulS on Feb 14, 2017, 04:55 pm
Quote
you mean start with that example ??
Yes.. Instead of reading all the analog pins, and returning useless data, read your ultrasonic sensor and return useful data.

Title: Re: :o HELP arduino + Ultrasonic+ Shield Ethernet
Post by: hachani on Feb 14, 2017, 05:07 pm
ok  bro i'll try do it if icant i'll ask your help