receive data from arduino uno and send to server, receive gate open/command and send it to uno
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#### the esp-01 receive data from arduino uno and send it to node js server
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#### the esp-01 receive data from arduino uno and send it to node js server
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![alt text](image.png)
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![alt text](image.png)
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![alt text](image-1.png)
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38
src/main.cpp
38
src/main.cpp
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#include <ESP8266HTTPClient.h>
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#include <ESP8266HTTPClient.h>
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// WiFi credentials
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// WiFi credentials
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const char *ssid = "KARAN";
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// const char *ssid = "KARAN";
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const char *password = "12345679";
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// const char *password = "12345679";
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const char *ssid = "RIZALDY";
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const char *password = "capputo322";
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WiFiClient client;
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WiFiClient client;
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@ -12,6 +14,8 @@ WiFiClient client;
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void setup()
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void setup()
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{
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{
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Serial.begin(115200);
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Serial.begin(115200);
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// pinMode(2, OUTPUT);
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// digitalWrite(2, HIGH);
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Serial.println("ESP-01 ready");
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Serial.println("ESP-01 ready");
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WiFi.begin(ssid, password);
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WiFi.begin(ssid, password);
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@ -32,6 +36,8 @@ void loop()
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{
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{
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if (WiFi.status() == WL_CONNECTED)
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if (WiFi.status() == WL_CONNECTED)
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{
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{
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// Serial.println("Wifi connected");
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// digitalWrite(2, LOW);
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String IncomingStr = "";
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String IncomingStr = "";
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while (Serial.available() > 0)
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while (Serial.available() > 0)
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@ -43,7 +49,7 @@ void loop()
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if (IncomingStr.length() > 0)
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if (IncomingStr.length() > 0)
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{
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{
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Serial.print("Wifi connected,");
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IncomingStr = IncomingStr.substring(0, IncomingStr.indexOf('\n'));
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IncomingStr = IncomingStr.substring(0, IncomingStr.indexOf('\n'));
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String jsonSent = "{\"value\": \"" + IncomingStr + "\"}";
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String jsonSent = "{\"value\": \"" + IncomingStr + "\"}";
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@ -57,15 +63,15 @@ void loop()
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if (httpResponseCode > 0)
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if (httpResponseCode > 0)
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{
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{
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Serial.print("HTTP Response code: ");
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// Serial.print("HTTP Response code: ");
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Serial.println(httpResponseCode);
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// Serial.println(httpResponseCode);
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String payload = http.getString();
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String payload = http.getString();
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Serial.println(payload);
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Serial.print(payload);
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}
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}
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else
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else
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{
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{
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Serial.print("Error code: ");
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Serial.print("Error code: ");
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Serial.println(httpResponseCode);
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Serial.print(httpResponseCode);
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}
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}
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// Close connection
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// Close connection
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@ -74,33 +80,35 @@ void loop()
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}
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}
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// Send data to Arduino
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// Send data to Arduino
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Serial.println("Hello from ESP-01!");
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// Serial.println("Hello from ESP-01!");
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}
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}
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else
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else
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{
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{
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// Reconnect to WiFi if disconnected
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// Reconnect to WiFi if disconnected
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WiFi.begin(ssid, password);
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WiFi.begin(ssid, password);
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Serial.println("Wifi disconnected");
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// digitalWrite(2, HIGH);
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// Wait for connection
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// Wait for connection
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int timeout = 0;
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int timeout = 0;
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while (WiFi.status() != WL_CONNECTED && timeout < 20)
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while (WiFi.status() != WL_CONNECTED && timeout < 20)
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{ // wait for 10 seconds max
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{ // wait for 10 seconds max
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delay(500);
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delay(500);
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Serial.print(".");
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// Serial.print(".");
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timeout++;
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timeout++;
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}
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}
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if (WiFi.status() == WL_CONNECTED)
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if (WiFi.status() == WL_CONNECTED)
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{
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{
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Serial.println("");
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// Serial.println("");
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Serial.println("Reconnected to WiFi");
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// Serial.println("Reconnected to WiFi");
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Serial.println("IP address: ");
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// Serial.println("IP address: ");
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Serial.println(WiFi.localIP());
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// Serial.println(WiFi.localIP());
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}
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}
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else
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else
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{
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{
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Serial.println("");
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// Serial.println("");
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Serial.println("Failed to reconnect to WiFi");
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// Serial.println("Failed to reconnect to WiFi");
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}
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}
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}
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}
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delay(2000);
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delay(2000);
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