I want to make a text entry and submit button so I can send a value to the arduino from the arduino served web page. Then store the submitted value in a variable for use. Can anyone point me in the right direction?
Can anyone point me in the right direction?
Thanks PaulS. That gets me to what I need in html side of it. How do I receive that data on the arduino side for storing in a variable?
How do I receive that data on the arduino side for storing in a variable?
Have you looked at the Arduino-as-server example? Have you written ANY code?
PaulS:
How do I receive that data on the arduino side for storing in a variable?
Have you looked at the Arduino-as-server example? Have you written ANY code?
I have looked at the example - webServer and ChatServer. I haven't written any code for this project. Right now I am trying to get a better understanding of how the Ethernet library works.
I don't see any input from the webpage on the Webserver example. On the ChatServer example I see
void loop() {
// wait for a new client:
EthernetClient client = server.available();
// when the client sends the first byte, say hello:
if (client) {
if (!alreadyConnected) {
// clead out the input buffer:
client.flush();
Serial.println("We have a new client");
client.println("Hello, client!");
alreadyConnected = true;
}
if (client.available() > 0) {
// read the bytes incoming from the client:
char thisChar = client.read();
// echo the bytes back to the client:
server.write(thisChar);
// echo the bytes to the server as well:
Serial.write(thisChar);
}
}
}
In an effort to understand what is going on here......
void loop() {
// wait for a new client:
EthernetClient client = server.available(); //not sure at all what this does.
// when the client sends the first byte, say hello:
if (client) {
if (!alreadyConnected) { //if client is not connected
// clear out the input buffer:
client.flush(); //clear the input buffer.. why are we clearing the buffer?
Serial.println("We have a new client"); //print in serial that a client is connected
client.println("Hello, client!"); //say hi to the new client
alreadyConnected = true; //acknowledging a client is connected?
}
if (client.available() > 0) { //if there are more than 0 clients available
// read the bytes incoming from the client:
char thisChar = client.read(); //Store what client sends in thisChar
// echo the bytes back to the client:
server.write(thisChar); //Repeat what was received
// echo the bytes to the server as well:
Serial.write(thisChar); //Display what is received
}
}
}
I think this is what I would need to receive from the webpage. Am I at least close?
void loop() {
char thisChar = client.read();
// echo the bytes back to the client:
server.write(thisChar);
}
Okay, So trying to make the text input.... I get this error.... I know I've formatted it wrong but I don't know how.
WebServer.ino: In function 'void loop()':
WebServer:73: error: expected `)' before 'text'
/*
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();
client.println("<!DOCTYPE HTML>");
client.println("<html>");
// output the value of each analog input pin
client.println("<form>");
client.println("Name: <input type="text" name="First Name">");
client.println("</form>");
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");
}
}
client.println("Name: <input type="text" name="First Name">");
Double quotes that are to be part of the string need to be escaped. Otherwise, they mark the end of the string.
What do you mean by "escaped"?
client.println("Name: <input type=</mark>"text</mark>" name=</mark>"First Name</mark>">");
kindly upload your arduino and HTML code.