smart_config_rf_over_ethernet.ino

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <RH_ASK.h>
#include <SPI.h >	// Not actualy used but needed to compile

//RH_ASK driver;
RH_ASK driver(2000, 0);
// RH_ASK driver(2000, 2, 4, 5);	// ESP8266 or ESP32: do not use pin 11

//Set-up connects nodemcu to mobile-wifi   

void setup()
{
	Serial.begin(115200);
	/*Set ESP8266 to WiFi Station mode */

	WiFi.mode(WIFI_STA);
	/*start SmartConfig */
	WiFi.beginSmartConfig();

	/*Wait for SmartConfig packet from mobile */
	Serial.println("Waiting for SmartConfig.");
	while (!WiFi.smartConfigDone())
	{
		delay(500);
		Serial.print(".");
	}

	Serial.println("");
	Serial.println("SmartConfig done.");

	/*Wait for WiFi to connect to AP */
	Serial.println("Waiting for WiFi");
	while (WiFi.status() != WL_CONNECTED)
	{
		delay(500);
		Serial.print(".");
	}

	Serial.println("WiFi Connected.");
	Serial.print("IP Address: ");
	Serial.println(WiFi.localIP());
	if (!driver.init())
	{
		Serial.println("init failed");
	}
}

void loop()
{
	delay(1000);
	uint8_t buf[RH_ASK_MAX_MESSAGE_LEN];
	uint8_t buflen = sizeof(buf);
	char buf_char[10] = "\0";
	int i = 0;
	//Serial.print("buf is");
	//Recieving data via rf reciever and converting it to a string
	if (driver.recv(buf, &buflen))
	{
		driver.printBuffer("Got:", buf, buflen);

		for (i = 0; i < buflen; i++)
		{
			buf_char[i] = (char) buf[i];
			// buf++;
		}

		Serial.println("recieved data is ");
		//Serial.println((char)*buf);
		//Serial.println("buflen");
		//Serial.print(buflen);
		// Serial.print("buf_char is ");
		Serial.print(buf_char);
		//sending the data over to the server
		HTTPClient http;
		String str1 = "{\"product_id\":\"100\",\"level\":\"";
		String data2 = (String) buf_char;
		String name2 = "\"}";

		String name3 = str1 + data2 + name2;

		String post_var = name3;
		Serial.print("[HTTP] begin...\n");
		http.begin("54.70.29.64", 9000, "/postLevel");	//HTTP
		http.addHeader("Content-Type", "application/json");
		Serial.print("[HTTP] Post...\n");
		int httpCode = http.POST(post_var);
		if (httpCode)
		{
			// HTTP header has been send and Server response header has been handled
			Serial.printf("[HTTP] GET... code: %d\n", httpCode);
			// file found at server
			if (httpCode == 200)
			{
				String payload = http.getString();
				Serial.println(payload);
			}
		}
		else
		{
			Serial.print("[HTTP] GET... failed, no connection or no HTTP server\n");
		}

		//   Serial.println("buflen");
	}
}