hi there,
I have a request. I want to send temperature value(ds18b20) from Arduino uno to web page by esp8266. I use this library -->> <ESP8266WiFi.h>. at the moment, I can send data for Arduino UNO by esp8266 and I'm controlling digital output's arduino successfully. I have two codes, one code for the esp and another for arduino. could you tell me how can I send data from arduino to web page?
my codes:
- esp8266:
/*This code was created by H.I Electronic Tech channel
* I hope this code helps you in your projects
* if you want to support me, you could put a Like Share and subscribe to my channel
* here the youtube video if you have any question put it in the comments
*https://youtu.be/na-jyyerjHM
*/
#include <ESP8266WiFi.h>//be sure this line changes to the red when you select the ESP board
const char* SSID = "*****"; //your WiFi name
const char* password = "123456789";
// Setup GPIO2
int pinGPIO2 = 2; //To control Relay
int pinGPIO0 = 0; //To control LED
int LStatus = 0; //0=off,1=on,
int RStatus = 0; //0=off,1=on,
// Create the ESP Web Server on port 80
WiFiServer WebServer(80);
// Web Client
WiFiClient client;
void setup() {
Serial.begin(9600);
delay(10);
// Setup the GPIO2 LED Pin
pinMode(pinGPIO2, OUTPUT);
digitalWrite(pinGPIO2, LOW);
// Setup the GPIO0 Relay Pin
pinMode(pinGPIO0, OUTPUT);
digitalWrite(pinGPIO2, LOW);
// Connect to WiFi network
Serial.println();
WiFi.disconnect();//disconnect from any wifi network
WiFi.mode(WIFI_STA);
Serial.print("Connecting to ");
Serial.println(SSID);
WiFi.begin(SSID, password);//connect to the wifi
while (WiFi.status() != WL_CONNECTED) {//while the esp8266 trying to connect with WiFi print dot(..)
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("Connected to WiFi");
// Start the Web Server
WebServer.begin();
Serial.println("Web Server started");
// Print the IP address
Serial.print("You can connect to the ESP8266 at this URL: ");
Serial.print("http://");
Serial.print(WiFi.localIP());
Serial.println("/");
}
void loop() {
//if the WiFi restart or abruptly turned off the esp will reconnect with it.
if(WiFi.status() != WL_CONNECTED){
WiFi.disconnect();
WiFi.mode(WIFI_STA);
Serial.print("Reconnecting to ");
Serial.println(SSID);
WiFi.begin(SSID, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("Connected");
}
// Check if a user has connected
client = WebServer.available();
if (!client) {
return; //restart loop
}
// Wait until the user sends some data
Serial.println("New User");
while (!client.available()) {
delay(1);
}
// Read the first line of the request
String request = client.readStringUntil('\r\n');
Serial.println(request);
client.flush();
// Process the request:
if (request.indexOf("/ONR") != -1) {
digitalWrite(pinGPIO2, HIGH);
Serial.print("0");
RStatus = 1;
}
if (request.indexOf("/OFFR") != -1) {
digitalWrite(pinGPIO2, LOW);
Serial.print("1");
RStatus = 0;
}
// Return the response
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html; charset=UTF-8");
client.println("");
client.println("<!DOCTYPE HTML>");
client.println("<html>");
client.println("<head>");
client.println("<title>ESP8266 controller</title><style type=\"text/css\">body{background-color: gray;}.button {background: rgba(225,225,222,1);");
client.println("font-size:23px;border-radius:15px;}.button:hover{box-shadow:0px 0px 8px 2px #333;cursor:pointer}; a {text-decoration: none;} ");
client.println("</style>");
client.println("</head>");
client.println("<body>");
client.println("
<center><h1 style=\"text-align: center;\">Esp8266 WiFi controller</h1>");
client.println("<a href=\"/\">Refresh Status</a>");
//check the Relay status
if (RStatus == 0) {
client.print("<h1>Relay is Off</h1>
");
client.println("<h2>Turn the Relay</h2><a href=\"/ONR\"><button class=\"button\">ON</button></a>
");
}
else if (RStatus == 1) {
client.print("<h1>Relay is On</h1>
");
client.println("<h2>Turn the Relay</h2><a href=\"/OFFR\"><button class=\"button\">OFF</button></a>
");
}
client.println("</center>
");
client.println("</body>");
client.println("</html>");
delay(1);
Serial.println("User disconnected");
Serial.println("");
}
- arduino's code:
void setup() {
Serial.begin(9600);
pinMode(7, OUTPUT);
}
void loop() {
if (Serial.available()) {
char ser = Serial.read();
switch (ser) {
case '0':
digitalWrite(7, HIGH);
break;
case '1':
digitalWrite(7, LOW);
break;
}
}
}
best regards