client.print problem

Projects Programming
1

When adding more client.println lines, the program stops working on arduino uno.

The code is not mine but herited from previous home owner. I would like to build a GUI onto of code so many client.print commands are necessary

Pellet_kachel_vrik_CSS_layout_8dec.ino (15.5 KB)

2

It sounds like a lack of memory.

3

something that can be fixed by using other libraries of a real hardware limitation?

4

Use the F() function like this.

                    client.println(F("HTTP/1.1 200 OK"));
                    client.println(F("Content-Type: text/html"));

Use that on all your client.print and client.println calls that use a static string.

5

You can bundle a lot of static html text into an F() macro like below:

//double quote " in html replaced with a single quote' to prevent compile error
//html lines consolidated and put inside F() macro to save memory space

client.print(F("<html><head><meta http-equiv='Content-Language' content='pt-br'>"
"<meta http-equiv='Content-Type' content='text/html; charset=windows-1252'>"
"<title>Unirp - Centro Universitário de Rio Preto</title></head><body>"
"<div align='center'><h1>Centro Universitario de Rio Preto</h1>"
"<h2>Gerenciamento de Volume e Temperatura da Banheira</h2></div>"
"<div align='center'><h4> Pressione o Botão para encher na temperatura desejada</h4>"
"<table border='0' width='50%' cellpadding='2'><tr></tr><tr><td>"
"<!--Botão Temperatura Fria--><form method='POST' action='arduino.php'>"
"<p align='center'><input type='hidden' value='fria' name='tempD' >"
"<input type='submit' value='Água Fria' name='fria'></p></form>"
"<!--Botão Temperatura Morna--><form method='POST' action='arduino.php'>"
"<p align='center'><input type='hidden' value='morna' name='tempD' >"
"<input type='submit' value='Água Morna' name='morna'></p></form>"
"<!--Botão Temperatura Quente--><form method='POST' action='arduino.php'>"
"<p align='center'><input type='hidden' value='quente' name='tempD' >"
"<input type='submit' value='Água Quente' name='quente'></p></form></form>"
"<div align='center'></div></tr></table></div></body></html>"));