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/*
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This sketch establishes a TCP connection to a "quote of the day" service.
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It sends a "hello" message, and then prints received data.
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*/
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#include <ESP8266WiFi.h>
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#ifndef STASSID
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#define STASSID "shellyem3-3494547B8D61"
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#define STAPSK ""
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#endif
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const char* ssid = STASSID;
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const char* password = STAPSK;
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const char* host = "192.168.33.1";
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const uint16_t port = 80;
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void setup() {
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Serial.begin(115200);
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// We start by connecting to a WiFi network
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Serial.println();
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Serial.println();
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Serial.print("Connecting to ");
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Serial.println(ssid);
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/* Explicitly set the ESP8266 to be a WiFi-client, otherwise, it by default,
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would try to act as both a client and an access-point and could cause
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network-issues with your other WiFi-devices on your WiFi-network. */
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WiFi.mode(WIFI_STA);
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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Serial.println("");
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Serial.println("WiFi connected");
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Serial.println("IP address: ");
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Serial.println(WiFi.localIP());
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}
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void loop() {
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static bool wait = false;
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Serial.print("connecting to ");
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Serial.print(host);
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Serial.print(':');
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Serial.println(port);
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// Use WiFiClient class to create TCP connections
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WiFiClient client;
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if (!client.connect(host, port)) {
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Serial.println("connection failed");
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delay(5000);
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return;
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}
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// This will send a string to the server
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Serial.println("sending data to server");
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if (client.connected()) { client.println("shellyem3-3494547B8D61/emeter/0?"); }
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// wait for data to be available
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unsigned long timeout = millis();
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while (client.available() == 0) {
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if (millis() - timeout > 5000) {
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Serial.println(">>> Client Timeout !");
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client.stop();
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delay(60000);
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return;
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}
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}
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// Read all the lines of the reply from server and print them to Serial
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Serial.println("receiving from remote server");
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// not testing 'client.connected()' since we do not need to send data here
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while (client.available()) {
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char ch = static_cast<char>(client.read());
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Serial.print(ch);
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}
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// Close the connection
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Serial.println();
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Serial.println("closing connection");
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client.stop();
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if (wait) {
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delay(300000); // execute once every 5 minutes, don't flood remote service
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}
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wait = true;
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}
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