Inital commit

.gitignore

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+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch
+src/config.h

.travis.yml

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+# Continuous Integration (CI) is the practice, in software
+# engineering, of merging all developer working copies with a shared mainline
+# several times a day < https://docs.platformio.org/page/ci/index.html >
+#
+# Documentation:
+#
+# * Travis CI Embedded Builds with PlatformIO
+#   < https://docs.travis-ci.com/user/integration/platformio/ >
+#
+# * PlatformIO integration with Travis CI
+#   < https://docs.platformio.org/page/ci/travis.html >
+#
+# * User Guide for `platformio ci` command
+#   < https://docs.platformio.org/page/userguide/cmd_ci.html >
+#
+#
+# Please choose one of the following templates (proposed below) and uncomment
+# it (remove "# " before each line) or use own configuration according to the
+# Travis CI documentation (see above).
+#
+
+
+#
+# Template #1: General project. Test it using existing `platformio.ini`.
+#
+
+# language: python
+# python:
+#     - "2.7"
+#
+# sudo: false
+# cache:
+#     directories:
+#         - "~/.platformio"
+#
+# install:
+#     - pip install -U platformio
+#     - platformio update
+#
+# script:
+#     - platformio run
+
+
+#
+# Template #2: The project is intended to be used as a library with examples.
+#
+
+# language: python
+# python:
+#     - "2.7"
+#
+# sudo: false
+# cache:
+#     directories:
+#         - "~/.platformio"
+#
+# env:
+#     - PLATFORMIO_CI_SRC=path/to/test/file.c
+#     - PLATFORMIO_CI_SRC=examples/file.ino
+#     - PLATFORMIO_CI_SRC=path/to/test/directory
+#
+# install:
+#     - pip install -U platformio
+#     - platformio update
+#
+# script:
+#     - platformio ci --lib="." --board=ID_1 --board=ID_2 --board=ID_N

.vscode/extensions.json

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+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ]
+}

.vscode/settings.json

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+{
+    "files.associations": {
+        "array": "cpp",
+        "atomic": "cpp",
+        "*.tcc": "cpp",
+        "cctype": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "cstdarg": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "deque": "cpp",
+        "list": "cpp",
+        "unordered_map": "cpp",
+        "vector": "cpp",
+        "exception": "cpp",
+        "fstream": "cpp",
+        "functional": "cpp",
+        "initializer_list": "cpp",
+        "iosfwd": "cpp",
+        "istream": "cpp",
+        "limits": "cpp",
+        "new": "cpp",
+        "ostream": "cpp",
+        "numeric": "cpp",
+        "sstream": "cpp",
+        "stdexcept": "cpp",
+        "streambuf": "cpp",
+        "cinttypes": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "utility": "cpp",
+        "typeinfo": "cpp"
+    }
+}

include/README

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+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

lib/README

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+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in a an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html

platformio.ini

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+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:esp01_1m]
+platform = espressif8266
+board = esp01_1m
+framework = arduino
+
+
+lib_deps =
+  PubSubClient
+  ArduinoJson

src/config.h-Example

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+//
+//Rename me to config.h
+//
+
+// Wifi Config
+#define CONFIG_WIFI_SSID "<WIFIName>"
+#define CONFIG_WIFI_PASS "<WIFIPass>"
+#define CONFIG_WIFI_NAME "TempProbe"
+
+// STATIC IP (enable by setting CONFIG_IP_STATIC to 1)
+#define CONFIG_IP_STATIC  0
+IPAddress local_IP(192,168,1,10);
+IPAddress gateway(192,168,1,1);
+IPAddress subnet(255,255,255,0);
+IPAddress dns(1,1,1,1);
+// MQTT Config
+#define CONFIG_MQTT_HOST "<MQTT-Addres>"
+#define CONFIG_MQTT_PORT 1883
+#define CONFIG_MQTT_USER "username"
+#define CONFIG_MQTT_PASS "password"
+#define CONFIG_MQTT_CLIENT_ID "TempProbe" 
+
+//Domoticz Config
+#define CONFIG_MQTT_TOPIC "domoticz/in"
+//IDX for virtual Temp + Humidity sensor
+#define CONFIG_MQTT_IDX_Comb <TEMP+HUMidx>
+//IDX for virtual Temp sensor
+#define CONFIG_MQTT_IDX_Temp <TEMPidx>
+//IDX for virtual Humidity sensor
+#define CONFIG_MQTT_IDX_Hum <HUMidx>

src/main.cpp

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+#include <Arduino.h>
+#include <ArduinoJson.h>
+#include <Wire.h>
+#include <ESP8266WiFi.h>
+#include <PubSubClient.h>
+#include <config.h>
+
+// Default(A) SHT30 I2C address is 0x44 
+// B SHT30 I2C address is 0x45
+#define Addr 0x44
+
+//WIFI
+const char* ssid = CONFIG_WIFI_SSID; // Enter your WiFi name
+const char* password =  CONFIG_WIFI_PASS; // Enter WiFi password
+
+//MQTT
+const char* mqttServer = CONFIG_MQTT_HOST;
+const char* mqttUser = CONFIG_MQTT_USER;
+const int mqttPort = CONFIG_MQTT_PORT;
+const char* mqttPassword = CONFIG_MQTT_PASS;
+const char* mqttClientId = CONFIG_MQTT_CLIENT_ID; 
+
+//Domoticz
+const char* domotopic = CONFIG_MQTT_TOPIC;
+const int idxcomb = CONFIG_MQTT_IDX_Comb;
+const int idxtemp = CONFIG_MQTT_IDX_Temp;
+const int idxhum = CONFIG_MQTT_IDX_Hum;
+
+WiFiClient espClient;
+PubSubClient client(espClient);
+
+void setup() {
+  // Initialise I2C communication as MASTER
+  Wire.begin(0, 2);
+  // Initialise serial communication, set baud rate = 9600
+  Serial.begin(9600);
+  
+ 
+  if (CONFIG_IP_STATIC == 1){
+    if (!WiFi.config(local_IP, gateway, subnet,dns)) {
+      Serial.println("Static IP configration error");
+    }
+  } 
+  WiFi.begin(ssid, password);
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.println("Connecting to WiFi..");
+  }
+  Serial.println("Connected to the WiFi");
+  Serial.println("IP address: ");
+  Serial.println(WiFi.localIP());
+
+  client.setServer(mqttServer, mqttPort);
+  while (!client.connected()) {
+    Serial.println("Connecting to MQTT...");
+ 
+    if (client.connect("TempOutdoor", mqttUser, mqttPassword )) {
+ 
+      Serial.println("Connected to MQTT");  
+ 
+    } else {
+ 
+      Serial.print("failed with state ");
+      Serial.print(client.state());
+      delay(2000);
+ 
+    }
+  }
+}
+
+void loop()
+{
+
+//WiFi Check 
+  if ( WiFi.status() != WL_CONNECTED ) {
+    Serial.println("WiFi disconnected");
+    WiFi.disconnect();
+    WiFi.begin(ssid, password); 
+    while (WiFi.status() != WL_CONNECTED) {
+      delay(1000);
+      Serial.println("Connecting to WiFi..");
+    }
+  Serial.println("Connected to the WiFi");
+  Serial.println("IP address: ");
+  Serial.println(WiFi.localIP()); 
+  }
+
+//MQTT Check
+  while (!client.connected()) {
+    client.connect("TempOutdoor", mqttUser, mqttPassword);
+  }
+
+  unsigned int data[6];
+ 
+  // Start I2C Transmission
+  Wire.beginTransmission(Addr);
+  // Send measurement command
+  Wire.write(0x2C);
+  Wire.write(0x06);
+  // Stop I2C transm ission
+  Wire.endTransmission();
+  delay(500);
+ 
+  // Request 6 bytes of data
+  Wire.requestFrom(Addr, 6);
+ 
+  // Read 6 bytes of data
+  // cTemp msb, cTemp lsb, cTemp crc, humidity msb, humidity lsb, humidity crc
+  if (Wire.available() == 6)
+  {
+    data[0] = Wire.read();
+    data[1] = Wire.read();
+    data[2] = Wire.read();
+    data[3] = Wire.read();
+    data[4] = Wire.read();
+    data[5] = Wire.read();
+  }
+ 
+  // Convert the data
+  float cTemp = ((((data[0] * 256.0) + data[1]) * 175) / 65535.0) - 45;
+  float CalcHumidity = ((((data[3] * 256.0) + data[4]) * 100) / 65535.0);
+  int RoundHumidity = CalcHumidity;
+  // Output data to serial monitor
+  Serial.print("Relative Humidity : ");
+  Serial.print(CalcHumidity);
+  Serial.println(" %RH");
+  Serial.print("Temperature in Celsius : ");
+  Serial.print(cTemp);
+  Serial.println(" C");
+
+  StaticJsonDocument<100> JSONHum;
+  StaticJsonDocument<100> JSONTemp;
+  StaticJsonDocument<100> JSONComb;
+
+  JSONHum["idx"] = idxhum;
+  JSONHum["nvalue"] = RoundHumidity;
+  JSONHum["svalue"] = "0";
+ 
+  JSONTemp["idx"] = idxtemp;
+  JSONTemp["nvalue"] = 0;
+  JSONTemp["svalue"] =  String(cTemp) ;
+
+  JSONComb["idx"] = idxcomb;
+  JSONComb["nvalue"] = 0;
+  JSONComb["svalue"] = String(cTemp) + String(";") + String(CalcHumidity) + String(";0");
+
+  char buffer1[256];
+  char buffer2[256];
+  char buffer3[256];
+  serializeJson(JSONTemp, buffer1);
+  serializeJson(JSONHum, buffer2);
+  serializeJson(JSONComb, buffer3);
+
+  if (client.publish(domotopic, buffer1) == true) {
+    Serial.println("Published MQTT messages");
+    } else {
+        Serial.println("Error sending MQTT messages");
+    }
+  client.publish(domotopic, buffer2);
+  client.publish(domotopic, buffer3);
+  client.loop();
+  delay(60000); //1min
+}

test/README

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+
+This directory is intended for PIO Unit Testing and project tests.
+
+Unit Testing is a software testing method by which individual units of
+source code, sets of one or more MCU program modules together with associated
+control data, usage procedures, and operating procedures, are tested to
+determine whether they are fit for use. Unit testing finds problems early
+in the development cycle.
+
+More information about PIO Unit Testing:
+- https://docs.platformio.org/page/plus/unit-testing.html