Cytron WiFi Shield
Posted: Mon Jul 09, 2018 8:59 amHello may i ask, based on the wifi demo sketch below is it possible to send data to a different ip adress or cloud and which command is responsible for that ?
- CODE: SELECT_ALL_CODE
#include <CytronWiFiShield.h>
#include <CytronWiFiClient.h>
#include <CytronWiFiServer.h>
#include <SoftwareSerial.h>
const char *ssid = "...";
const char *pass = "...";
IPAddress ip(192, 168, 1 ,242);
ESP8266Server server(80);
const char htmlHeader[] = "HTTP/1.1 200 OK\r\n"
"Content-Type: text/html\r\n"
"Connection: close\r\n\r\n"
"<!DOCTYPE HTML>\r\n"
"<html>\r\n";
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
if(!wifi.begin(2, 3))
{
Serial.println(F("Error talking to shield"));
while(1);
}
Serial.println(wifi.firmwareVersion());
Serial.print(F("Mode: "));Serial.println(wifi.getMode());// 1- station mode, 2- softap mode, 3- both
// Uncomment these 2 lines if you are using static IP Address
// Serial.println(F("Setup wifi config"));
// wifi.config(ip);
Serial.println(F("Start wifi connection"));
if(!wifi.connectAP(ssid, pass))
{
Serial.println(F("Error connecting to WiFi"));
while(1);
}
Serial.print(F("Connected to "));Serial.println(wifi.SSID());
Serial.println(F("IP address: "));
Serial.println(wifi.localIP());
wifi.updateStatus();
Serial.println(wifi.status()); //2- wifi connected with ip, 3- got connection with servers or clients, 4- disconnect with clients or servers, 5- no wifi
clientTest();
espblink(100);
server.begin();
}
void loop() {
// put your main code here, to run repeatedly:
serverTest();
}
void espblink(int time)
{
for(int i = 0;i<12;i++)
{
wifi.digitalWrite(2,wifi.digitalRead(2)^1);
delay(time);
}
}
void serverTest()
{
ESP8266Client client = server.available();
if(client.available()>0)
{
String req = client.readStringUntil('\r');
// First line of HTTP request looks like "GET /path HTTP/1.1"
// Retrieve the "/path" part by finding the spaces
int addr_start = req.indexOf(' ');
int addr_end = req.indexOf(' ', addr_start + 1);
if (addr_start == -1 || addr_end == -1) {
Serial.print(F("Invalid request: "));
Serial.println(req);
return;
}
req = req.substring(addr_start + 1, addr_end);
Serial.print(F("Request: "));
Serial.println(req);
client.flush();
if(req.equals("/"))
{
IPAddress ip = wifi.localIP();
String ipStr = String(ip[0]) + '.' + String(ip[1]) + '.' + String(ip[2]) + '.' + String(ip[3]);
client.print(htmlHeader);
String htmlBody = "Hello from ESP8266 at ";
htmlBody += ipStr;
htmlBody += "</html>\r\n\r\n";
client.print(htmlBody);
}
else if(req.equals("/analog"))
{
client.print(htmlHeader);
String htmlBody="";
for (int a = 0; a < 6; a++)
{
htmlBody += "A";
htmlBody += String(a);
htmlBody += ": ";
htmlBody += String(analogRead(a));
htmlBody += "<br>\r\n";
}
htmlBody += "\r\n</html>\r\n";
client.print(htmlBody);
}
else if(req.equals("/gpio2"))
{
wifi.digitalWrite(2, wifi.digitalRead(2)^1);
client.print(htmlHeader);
String htmlBody="GPIO2 is now ";
htmlBody += wifi.digitalRead(2)==HIGH?"HIGH":"LOW";
htmlBody += "</html>\r\n";
client.print(htmlBody);
}
else if(req.equals("/info"))
{
String toSend = wifi.firmwareVersion();
toSend.replace("\r\n","<br>");
client.print(htmlHeader);
client.print(toSend);
client.print("</html>\r\n");
}
else
client.print("HTTP/1.1 404 Not Found\r\n\r\n");
client.stop();
}
}
void clientTest()
{
const char destServer[] = "www.adafruit.com";
ESP8266Client client;
if (!client.connect(destServer, 80))
{
Serial.println(F("Failed to connect to server."));
client.stop();
return;
}
const char *httpRequest = "GET /testwifi/index.html HTTP/1.1\r\n"
"Host: http://www.adafruit.com\r\n"
"Connection: close\r\n\r\n";
if(!client.print(httpRequest))
{
Serial.println(F("Sending failed"));
client.stop();
return;;
}
// set timeout approximately 5s for server reply
int i=5000;
while (client.available()<=0&&i--)
{
delay(1);
if(i==1) {
Serial.println(F("Timeout"));
return;
}
}
while (client.available()>0)
{
//char c = (char)client.read();
//Serial.print(c);
Serial.write(client.read());
}
client.stop();
}
