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/*
Created by Igor Jarc
See http://iot-playground.com for details
Please use community fourum on website do not contact author directly
Code based on https://github.com/DennisSc/easyIoT-ESPduino/blob/master/sketches/ds18b20.ino
External libraries:
- https://github.com/adamvr/arduino-base64
- https://github.com/milesburton/Arduino-Temperature-Control-Library
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
*/
#include <ESP8266WiFi.h>
#include <Base64.h>
#include <OneWire.h>
#include <DallasTemperature.h>
//AP definitions
#define AP_SSID "your ssid"
#define AP_PASSWORD "ap password"
// EasyIoT server definitions
#define EIOT_USERNAME "admin"
#define EIOT_PASSWORD "test"
#define EIOT_IP_ADDRESS "192.168.1.5"
#define EIOT_PORT 80
#define EIOT_NODE "N13S0"
#define REPORT_INTERVAL 60 // in sec
#define ONE_WIRE_BUS 2 // DS18B20 pin
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature DS18B20(&oneWire);
#define USER_PWD_LEN 40
char unameenc[USER_PWD_LEN];
float oldTemp;
void setup() {
Serial.begin(115200);
wifiConnect();
char uname[USER_PWD_LEN];
String str = String(EIOT_USERNAME)+":"+String(EIOT_PASSWORD);
str.toCharArray(uname, USER_PWD_LEN);
memset(unameenc,0,sizeof(unameenc));
base64_encode(unameenc, uname, strlen(uname));
oldTemp = -1;
}
void loop() {
float temp;
do {
DS18B20.requestTemperatures();
temp = DS18B20.getTempCByIndex(0);
Serial.print("Temperature: ");
Serial.println(temp);
} while (temp == 85.0 || temp == (-127.0));
if (temp != oldTemp)
{
sendTeperature(temp);
oldTemp = temp;
}
int cnt = REPORT_INTERVAL;
while(cnt--)
delay(1000);
}
void wifiConnect()
{
Serial.print("Connecting to AP");
WiFi.begin(AP_SSID, AP_PASSWORD);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
}
void sendTeperature(float temp)
{
WiFiClient client;
while(!client.connect(EIOT_IP_ADDRESS, EIOT_PORT)) {
Serial.println("connection failed");
wifiConnect();
}
String url = "";
url += "/Api/EasyIoT/Control/Module/Virtual/"+ String(EIOT_NODE) + "/ControlLevel/"+String(temp); // generate EasIoT server node URL
Serial.print("POST data to URL: ");
Serial.println(url);
client.print(String("POST ") + url + " HTTP/1.1\r\n" +
"Host: " + String(EIOT_IP_ADDRESS) + "\r\n" +
"Connection: close\r\n" +
"Authorization: Basic " + unameenc + " \r\n" +
"Content-Length: 0\r\n" +
"\r\n");
delay(100);
while(client.available()){
String line = client.readStringUntil('\r');
Serial.print(line);
}
Serial.println();
Serial.println("Connection closed");
}