122 lines
3.0 KiB
C++
122 lines
3.0 KiB
C++
/*
|
|
WiFiEsp example: WebClientRepeating
|
|
|
|
This sketch connects to a web server and makes an HTTP request
|
|
using an Arduino ESP8266 module.
|
|
It repeats the HTTP call each 10 seconds.
|
|
|
|
For more details see: http://yaab-arduino.blogspot.com/p/wifiesp.html
|
|
*/
|
|
|
|
#include "WiFiEsp.h"
|
|
|
|
// Emulate Serial1 on pins 6/7 if not present
|
|
#ifndef HAVE_HWSERIAL1
|
|
#include "SoftwareSerial.h"
|
|
SoftwareSerial Serial1(6, 7); // RX, TX
|
|
#endif
|
|
|
|
char ssid[] = "Twim"; // your network SSID (name)
|
|
char pass[] = "12345678"; // your network password
|
|
int status = WL_IDLE_STATUS; // the Wifi radio's status
|
|
|
|
char server[] = "arduino.cc";
|
|
|
|
unsigned long lastConnectionTime = 0; // last time you connected to the server, in milliseconds
|
|
const unsigned long postingInterval = 10000L; // delay between updates, in milliseconds
|
|
|
|
// Initialize the Ethernet client object
|
|
WiFiEspClient client;
|
|
|
|
void setup()
|
|
{
|
|
// initialize serial for debugging
|
|
Serial.begin(115200);
|
|
// initialize serial for ESP module
|
|
Serial1.begin(9600);
|
|
// initialize ESP module
|
|
WiFi.init(&Serial1);
|
|
|
|
// check for the presence of the shield
|
|
if (WiFi.status() == WL_NO_SHIELD) {
|
|
Serial.println("WiFi shield not present");
|
|
// don't continue
|
|
while (true);
|
|
}
|
|
|
|
// attempt to connect to WiFi network
|
|
while ( status != WL_CONNECTED) {
|
|
Serial.print("Attempting to connect to WPA SSID: ");
|
|
Serial.println(ssid);
|
|
// Connect to WPA/WPA2 network
|
|
status = WiFi.begin(ssid, pass);
|
|
}
|
|
|
|
Serial.println("You're connected to the network");
|
|
|
|
printWifiStatus();
|
|
}
|
|
|
|
void loop()
|
|
{
|
|
// if there's incoming data from the net connection send it out the serial port
|
|
// this is for debugging purposes only
|
|
while (client.available()) {
|
|
char c = client.read();
|
|
Serial.write(c);
|
|
}
|
|
|
|
// if 10 seconds have passed since your last connection,
|
|
// then connect again and send data
|
|
if (millis() - lastConnectionTime > postingInterval) {
|
|
httpRequest();
|
|
}
|
|
}
|
|
|
|
// this method makes a HTTP connection to the server
|
|
void httpRequest()
|
|
{
|
|
Serial.println();
|
|
|
|
// close any connection before send a new request
|
|
// this will free the socket on the WiFi shield
|
|
client.stop();
|
|
|
|
// if there's a successful connection
|
|
if (client.connect(server, 80)) {
|
|
Serial.println("Connecting...");
|
|
|
|
// send the HTTP PUT request
|
|
client.println(F("GET /asciilogo.txt HTTP/1.1"));
|
|
client.println(F("Host: arduino.cc"));
|
|
client.println("Connection: close");
|
|
client.println();
|
|
|
|
// note the time that the connection was made
|
|
lastConnectionTime = millis();
|
|
}
|
|
else {
|
|
// if you couldn't make a connection
|
|
Serial.println("Connection failed");
|
|
}
|
|
}
|
|
|
|
|
|
void printWifiStatus()
|
|
{
|
|
// print the SSID of the network you're attached to
|
|
Serial.print("SSID: ");
|
|
Serial.println(WiFi.SSID());
|
|
|
|
// print your WiFi shield's IP address
|
|
IPAddress ip = WiFi.localIP();
|
|
Serial.print("IP Address: ");
|
|
Serial.println(ip);
|
|
|
|
// print the received signal strength
|
|
long rssi = WiFi.RSSI();
|
|
Serial.print("Signal strength (RSSI):");
|
|
Serial.print(rssi);
|
|
Serial.println(" dBm");
|
|
}
|