User manual

005

if (sendCom("AT+CIPSEND=" + String(connectionId) + "," +

String(webpage.length()), ">"))

006

{

007

esp8266.print(webpage);

008

esp8266.find("SEND OK");

009

success &= sendCom("AT+CIPCLOSE=" + String(connectionId),

"OK");

010

}

011

else

012

{

013

success = false;

014

}

015

return success;

016

}

The loop-routine now waits for a request query. When this arrives, the function

sendWebsite() will be called, with the result of the createWebsite()-function hand-

ed over to it as a parameter. This way, the length of the text can be determined

with the length()-

function. After transfer of the website, the connection is finally closed again with

the AT+CIPCLOSE-command. Switching of the LED is also part of the loop-

routine and will differ slightly from the preceding chart. How this is done precisely

is made clear in the following HTML crash course.

4.4 | Insert: HTML crash course

This chapter will contain a brief HTML crash course. I want to specifically focus on

the creation of websites for controlling the NanoESP. The course will cover the

basic structures of an HTML document, creation of in- and output elements and

finally integration of own websites into the Arduino program.

An HTML file is always characterised by <HTML> at the beginning of the docu-

ment. The document end should be marked with </HTML>. Usually, the start and

end of a section or element are displayed comparably, as you can also see in the

header. The header contains important information and shapes, e.g. the title of the

website to be displayed in the browser bar in this case. In this case, the header

contains another piece of information that does not belong to the basics of HTML