So this: "Hello" world" is a string "Hello" with world" just hanging around.
To get the double quote into a string, use the escape character: "
char message[] = "A text with double quotes: \"Hello world\". ";
You can not get a variable in a PROGMEM (programmed along the sketch code in flash) area.
You have to do that runtime in a sketch.
For example you could use $1 or %A in the html code in PROGMEM, and replace that with the variables in the sketch.
Yes, i've an other idea with sprintf but, it's not working with PROGMEM
I've this:
#include <stdio.h>
EDIT: And if i put it here => char content_page1[200];
//PROGMEM prog_char content_page1[] = "<hr /><TABLE BORDER='1'><TR><TH>\"analogChan0\"</TH><TH>\"valeurAnalog0\"</TH><TH>Volts</TH></TR><TR><TH>\"analogChan1\"</TH><TH>\"valeurAnalog1\"</TH><TH>Ampères</TH></TR><TR><TH>\"analogChan2\"</TH><TH>\"valeurAnalog2\"</TH><TH>Watts</TH></TR><TABLE>";
sprintf(content_page1, "<hr /><TABLE BORDER='1'><TR><TH>%d</TH><TH>%d</TH><TH>Volts</TH></TR><TR><TH>%d</TH><TH>%d</TH><TH>Ampères</TH></TR><TR><TH>%d</TH><TH>%d</TH><TH>Watts</TH></TR><TABLE>", valeurAnalog0, analogChan1, valeurAnalog1, analogChan2, valeurAnalog2 );
With it, the program show error message:
multipage:66: error: expected constructor, destructor, or type conversion before '(' token
multipage:81: error: 'content_page1' was not declared in this scope
I WANT... No I MUST, display my dynamic variable into my website...
If by dynamic variable you are referring to analogChan0, then the below code might be of interest. The link below may also have useful info.
// zoomkat's meta refresh data frame test page 5/25/13
// use http://192.168.1.102:84 in your brouser for main page
// http://192.168.1.102:84/data static data page
// http://192.168.1.102:84/datastart meta refresh data page
// for use with W5100 based ethernet shields
// set the refresh rate to 0 for fastest update
// use STOP for single data updates
#include <SPI.h>
#include <Ethernet.h>
const int analogInPin0 = A0;
const int analogInPin1 = A1;
const int analogInPin2 = A2;
const int analogInPin3 = A3;
const int analogInPin4 = A4;
const int analogInPin5 = A5;
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //physical mac address
byte ip[] = { 192, 168, 1, 102 }; // arduino ip in lan
byte gateway[] = { 192, 168, 1, 1 }; // internet access via router
byte subnet[] = { 255, 255, 255, 0 }; //subnet mask
EthernetServer server(84); //server port
unsigned long int x=0; //set refresh counter to 0
String readString;
//////////////////////
void setup(){
Serial.begin(9600);
// disable SD SPI if memory card in the uSD slot
pinMode(4,OUTPUT);
digitalWrite(4,HIGH);
Ethernet.begin(mac, ip, gateway, gateway, subnet);
server.begin();
Serial.println("meta refresh data frame test 5/25/13"); // so I can keep track of what is loaded
}
void loop(){
EthernetClient client = server.available();
if (client) {
while (client.connected()) {
if (client.available()) {
char c = client.read();
if (readString.length() < 100) {
readString += c;
}
//check if HTTP request has ended
if (c == '\n') {
//check get atring received
Serial.println(readString);
//output HTML data header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println();
//generate data page
if(readString.indexOf("data") >0) { //checks for "data" page
x=x+1; //page upload counter
client.print("<HTML><HEAD>");
//meta-refresh page every 1 seconds if "datastart" page
if(readString.indexOf("datastart") >0) client.print("<meta http-equiv='refresh' content='1'>");
//meta-refresh 0 for fast data
if(readString.indexOf("datafast") >0) client.print("<meta http-equiv='refresh' content='0'>");
client.print("<title>Zoomkat's meta-refresh test</title></head><BODY>
");
client.print("page refresh number: ");
client.print(x); //current refresh count
client.print("
");
//output the value of each analog input pin
client.print("analog input0 is: ");
client.print(analogRead(analogInPin0));
client.print("
analog input1 is: ");
client.print(analogRead(analogInPin1));
client.print("
analog input2 is: ");
client.print(analogRead(analogInPin2));
client.print("
analog input3 is: ");
client.print(analogRead(analogInPin3));
client.print("
analog input4 is: ");
client.print(analogRead(analogInPin4));
client.print("
analog input5 is: ");
client.print(analogRead(analogInPin5));
client.println("
</BODY></HTML>");
}
//generate main page with iframe
else
{
client.print("<HTML><HEAD><TITLE>Zoomkat's frame refresh test</TITLE></HEAD>");
client.print("Zoomkat's Arduino frame meta refresh test 5/25/13");
client.print("
Arduino analog input data frame:
");
client.print(" <a href='http://192.168.1.102:84/datastart' target='DataBox' title=''yy''>META-REFRESH</a>");
client.print(" <a href='http://192.168.1.102:84/data' target='DataBox' title=''xx''>SINGLE-STOP</a>");
client.print(" <a href='http://192.168.1.102:84/datafast' target='DataBox' title=''zz''>FAST-DATA</a>
");
client.print("<iframe src='http://192.168.1.102:84/data' width='350' height='250' name='DataBox'>");
client.print("</iframe>
</HTML>");
}
delay(1);
//stopping client
client.stop();
//clearing string for next read
readString="";
}
}
}
}
}
zoomkat, i already see this tutorial and i make a first page for get back this variable with analogInput...
But, my project want too make many page ( first with AnalogInput Data, second config page, third for process the second page data)
So, i fund this tuto (Arduino Playground - WebServer), but apparently, PROGMEM Dosen't work with many variable, or char array dont want work with my analog Input
I've almost finished my project, but i want that many pages
Thanks a lot
EDIT: It's possible to define divers url like( myIP/index, myIP/setup, myIP/process) without PROGMEM ??