Arduino How to loop fetching a web page?

Question

Arduino

There is a working code for getting a web page from ESP8266, here:

#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11);

void setup()
{
Serial.begin(9600);
mySerial.begin(9600);
mySerial.println("AT+RST");
mySerial.println("AT+GMR");
mySerial.println("AT+CWMODE_DEF=1");//_DEF
delay(50);
mySerial.println("AT+CWJAP_DEF=\"routerr\",\"1029384756\"");
delay(6000);
mySerial.println("AT+CIPSTART=\"TCP\",\"192.168.1.11\",80");
delay(50);
mySerial.println("AT+CIPSEND=43");
delay(50);
mySerial.println("GET / HTTP/1.1\r\nHost: 192.168.1.11\r\n\r\n\r\n\r\n");
//delay(5000);
//mySerial.println("AT+CIPCLOSE");
}

void loop()
{
if (Serial.available()) mySerial.write(Serial.read());
if (mySerial.available()) Serial.write(mySerial.read());
delay(10);
}

But here, the receipt occurs once, and it is necessary that this page come every second, when I push the functions of obtaining the page into the loop, some kind of nonsense occurs: either the receipt starts before connecting to the server, or the received information does not have time to be displayed, or simply is not displayed / not it turns out, in general, what to do to make the receiving happen all the time, I already tried to put the receiving code into a separate function and tried to loop directly in setup, apparently I don’t understand something in the order of the functions, in general, show an example code so that the receiving happens all the time

Answer 1

It's all about processing speed and buffer sizes.
It is better to organize a ring buffer for uart reception with interrupt filling. In the main loop, only check the change of pointers in the buffer and immediately process the received characters.