For most small or private applications the easiest way for devices to communicate is HTTP. This way you can easily access them with a browser using your computer or even your smartphone. To work with HTTP we have the ConnectinoAjax library.
It is always essential to include the ConnectinoAjax-module, to initialize an instance of the module and to setup the StxSerial. The software automatically executes the start()-function at the start of the ATmega. You can use the loop() to continuously execute functions or test parameters.
Enable and configure module
Download example: ConnectinoHttp.ino
#include <ConnectinoAjax.h> // include the ConnectinoAjax-library
// initialize the Ajax-module on the UART
ConnectinoMqtt ajax = ConnectinoAjax(StxSerial);
void setup()
{
// enable the uart and add communication via ajax-module
StxSerial.begin();
StxSerial.add(ajax);
}
char ajaxCmd[127];
uint16_t cmdLen;
void loop()
{
if(ajax.dataAvailable())
{
ajax.getData(ajaxCmd, cmdLen); // get the data and get its length
if(strcmp(ajaxCmd, "Marco")) // if received message was "Marco"
ajax.respond("Polo"); // respond with "Polo"
}
}