I will be grateful for help with this problem.
My goal, of course, is to write some fairly clean code, using functions as a way of cleaning things up. I would like to do some of the “client.print” activity within a function, as shown here.
Unfortunately it won’t compile. The compiler says “‘client’ was not declared in this scope”, pointing at the first use of ‘client’ in the function “analytics”.
I assume there is something I must do to explain to the compiler that it should be able to make use of “client” within the function.
#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 = { 0x90, 0xA2, 0xDA, 0x00, 0x80, 0xB8 };
IPAddress ip(192,168,113,90);// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):EthernetServer server(81);
void setup()
{
// start the Ethernet connection and the server:
Ethernet.begin(mac, ip);
server.begin();
}void loop()
{// listen for incoming clients
EthernetClient client = server.available();
if (client) {
// an http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
// 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();client.print(“Getting ready for ‘hello world’”);
analytics();
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();
}
}void analytics()
{client.print(“Hello, world!”);
}
before you print "hello world. Also, you are using quote tags instead of code tags (#) to post your code