Muy buen día. Estoy tratando de enviar datos por el esp8266 a un servidor local por el siguiente código:
#include<SoftwareSerial.h>
SoftwareSerial client(2,3); //RX, TX
String webpage="";
int i=0,k=0;
String readString;
int x=0;
boolean No_IP=false;
String IP="";
char temp1='0';
String name="<p>Circuit Digest</p>"; //22
String dat="<p>Data Received Successfully.....</p>"; //21
void check4IP(int t1)
{
int t2=millis();
while(t2+t1>millis())
{
while(client.available()>0)
{
if(client.find("WIFI GOT IP"))
{
No_IP=true;
}
}
}
}
void get_ip()
{
IP="";
char ch=0;
while(1)
{
client.println("AT+CIFSR");
while(client.available()>0)
{
if(client.find("STAIP,"))
{
delay(1000);
Serial.print("IP Address:");
while(client.available()>0)
{
ch=client.read();
if(ch=='+')
break;
IP+=ch;
}
}
if(ch=='+')
break;
}
if(ch=='+')
break;
delay(1000);
}
Serial.print(IP);
Serial.print("Port:");
Serial.println(80);
}
void connect_wifi(String cmd, int t)
{
int temp=0,i=0;
while(1)
{
Serial.println(cmd);
client.println(cmd);
while(client.available())
{
if(client.find("OK"))
i=8;
}
delay(t);
if(i>5)
break;
i++;
}
if(i==8)
Serial.println("OK");
else
Serial.println("Error");
}
void wifi_init()
{
connect_wifi("AT",100);
connect_wifi("AT+CWMODE=3",100);
connect_wifi("AT+CWQAP",100);
connect_wifi("AT+RST",5000);
check4IP(5000);
if(!No_IP)
{
Serial.println("Connecting Wifi....");
connect_wifi("AT+CWJAP=\"1st floor\",\"muda1884\"",7000); //provide your WiFi username and password here
// connect_wifi("AT+CWJAP=\"vpn address\",\"wireless network\"",7000);
}
else
{
}
Serial.println("Wifi Connected");
get_ip();
connect_wifi("AT+CIPMUX=1",100);
connect_wifi("AT+CIPSERVER=1,80",100);
}
void sendwebdata(String webPage)
{
int ii=0;
while(1)
{
unsigned int l=webPage.length();
Serial.print("AT+CIPSEND=0,");
client.print("AT+CIPSEND=0,");
Serial.println(l+2);
client.println(l+2);
delay(100);
Serial.println(webPage);
client.println(webPage);
while(client.available())
{
//Serial.print(Serial.read());
if(client.find("OK"))
{
ii=11;
break;
}
}
if(ii==11)
break;
delay(100);
}
}
void setup()
{
Serial.begin(115200);
client.begin(115200);
wifi_init();
Serial.println("System Ready..");
}
void loop()
{
k=0;
Serial.println("Please Refresh your Page");
while(k<1000)
{
k++;
while(client.available())
{
if(client.find("0,CONNECT"))
{
Serial.println("Start Printing");
Send();
Serial.println("Done Printing");
delay(1000);
}
}
delay(1);
}
}
void Send()
{
webpage = "<h1>Welcome to Circuit Digest</h1><body bgcolor=f0f0f0>";
sendwebdata(webpage);
webpage=name;
webpage+=dat;
sendwebdata(webpage);
delay(1000);
webpage = "<a href="http://circuitdigest.com/";
webpage+="\">Click Here for More projects</a>";
sendwebdata(webpage);
client.println("AT+CIPCLOSE=0");
}
Lo analizo mediante monitor serie a NL y CR, Así es como debería funcionar:
AT
AT
OK
AT+CWMODE=3
AT+CWMODE=3
OK
AT+CWQAP
AT+CWQAP
OK
AT+RST
AT+RST
OK
Wifi Connected
IP Address:192.168.1.4."Port:80
AT+CIPMUX=1
AT+CIPMUX=1
AT+CIPMUX=1
OK
AT+CIPSERVER=1,80
AT+CIPSERVER=1,80
OK
System Ready..
Please Refresh your Page
Pero cuando lo conecto yo, sólo me llega hasta wifi connected, y no aparece nada más. Supongo yo que es el get_ip() el que está fallando. Espero su ayuda. Gracias!