add existing files

.gitignore

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

.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"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}

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

include/credentials.h

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+/************************* WiFi Access Point *********************************/
+
+#define WLAN_SSID       ""
+#define WLAN_PASS       ""
+
+/************************* MQTT Setup *********************************/
+
+#define MQTT_SERVER      ""
+#define MQTT_SERVERPORT  1883                   // use 8883 for SSL
+
+//#define MQTT_USERNAME    ""
+//#define MQTT_PASSWORD         ""

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 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:d1_mini]
+platform = espressif8266
+board = d1_mini
+framework = arduino
+
+monitor_speed=115200
+
+upload_speed = 921600
+
+
+build_flags =
+    '-D MQTT_BASETOPIC="wifips01"'
+
+lib_deps =
+    adafruit/Adafruit MQTT Library@^2.5.8
+    mathertel/OneButton@^2.0.3

src/main.cpp

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+#include <Arduino.h>
+#include "ESP8266WiFi.h"
+
+
+#include "Adafruit_MQTT.h"
+#include "Adafruit_MQTT_Client.h"
+
+#include <OneButton.h>
+
+#include "credentials.h"
+
+#define PIN_BTN_1 D5 //white
+#define PIN_BTN_2 D6 //orange
+#define PIN_BTN_3 D7 //black
+
+//const int RSSI_MAX =-50;// define maximum strength of signal in dBm
+//const int RSSI_MIN =-100;// define minimum strength of signal in dBm
+
+const int displayEnc=1;// set to 1 to display Encryption or 0 not to display
+
+#define MAX_STATIONS 64
+
+#define BSSID_LEN 6
+uint8_t target_mac[BSSID_LEN];
+
+uint8_t stations_found=0;
+String scan_SSID[MAX_STATIONS];
+int32_t scan_RSSI[MAX_STATIONS];
+String scan_BSSID[MAX_STATIONS];
+
+
+//Buttons
+
+
+OneButton button1(PIN_BTN_1, true,true);
+void click1();
+void doubleclick1();
+void longPressStart1();
+
+OneButton button2(PIN_BTN_2, true,true);
+void click2();
+void doubleclick2();
+void longPressStart2();
+
+OneButton button3(PIN_BTN_3, true,true);
+void click3();
+void doubleclick3();
+void longPressStart3();
+
+
+
+//MQTT
+WiFiClient client;
+#ifdef MQTT_USERNAME
+Adafruit_MQTT_Client mqtt(&client, MQTT_SERVER, MQTT_SERVERPORT, MQTT_USERNAME, MQTT_PASSWORD);
+#else
+Adafruit_MQTT_Client mqtt(&client, MQTT_SERVER, MQTT_SERVERPORT);
+#endif
+Adafruit_MQTT_Publish statusPub = Adafruit_MQTT_Publish(&mqtt, MQTT_BASETOPIC"/status");
+Adafruit_MQTT_Publish batteryPub = Adafruit_MQTT_Publish(&mqtt, MQTT_BASETOPIC"/battery");
+Adafruit_MQTT_Publish scanPub = Adafruit_MQTT_Publish(&mqtt, MQTT_BASETOPIC"/scan");
+
+bool MQTT_connect();
+bool wifi_connect();
+
+void scan();
+
+
+void setup() {
+  pinMode(LED_BUILTIN,OUTPUT);
+  pinMode(PIN_BTN_1,OUTPUT);
+  pinMode(PIN_BTN_2,OUTPUT);
+  pinMode(PIN_BTN_3,OUTPUT);
+  pinMode(A0,INPUT);
+
+  Serial.begin(115200);
+
+  button1.attachClick(click1);
+  button1.attachDoubleClick(doubleclick1);
+  button1.attachLongPressStart(longPressStart1);
+  
+  button2.attachClick(click2);
+  button2.attachDoubleClick(doubleclick2);
+  button2.attachLongPressStart(longPressStart2);
+  
+  button3.attachClick(click3);
+  button3.attachDoubleClick(doubleclick3);
+  button3.attachLongPressStart(longPressStart3);
+
+  // Set WiFi to station mode and disconnect from an AP if it was previously connected
+  WiFi.mode(WIFI_STA);
+  WiFi.disconnect();
+  delay(2000);
+
+  Serial.println("Setup done");
+
+  digitalWrite(LED_BUILTIN,LOW);
+
+  analogRead(A0);
+  Serial.print("Battery:"); Serial.println(analogRead(A0));
+
+  
+}
+
+void loop() {
+  button1.tick();
+  button2.tick();
+  button3.tick();
+  
+
+  scan();
+
+  bool mqtt_send=false;
+
+
+  bool wificonnectresult=wifi_connect();
+  if (wificonnectresult) {
+    mqtt_send=true;
+  }
+  
+  while(mqtt_send) {
+    bool mqttconnectresult=MQTT_connect();
+    if (mqttconnectresult) {
+      mqtt.processPackets(10);
+      int bat=analogRead(A0);
+      batteryPub.publish(bat);
+      Serial.print("batteryPub:"); Serial.println(bat);
+      for (uint8_t i=0;i<stations_found;i++) {
+        Serial.print(scan_BSSID[i]); Serial.print(", ");
+        Serial.print(scan_SSID[i]); Serial.print(", ");
+        Serial.print(scan_RSSI[i]);
+        Serial.println();
+        String pubstring="";
+        pubstring.concat(scan_BSSID[i]);
+        pubstring.concat(";");
+        pubstring.concat(scan_SSID[i]);
+        pubstring.concat(";");
+        pubstring.concat(scan_RSSI[i]);
+
+
+        char pubarray[128];
+        pubstring.toCharArray(pubarray, pubstring.length() + 1);
+        scanPub.publish(pubarray);
+        
+        delay(50);
+      }
+    }
+    mqtt_send=false;
+    digitalWrite(LED_BUILTIN,HIGH);
+    mqtt.disconnect();
+    
+    while(mqtt.connected()) {
+      Serial.println("Waiting for mqtt to disconnect");
+      delay(100);
+    }
+    Serial.println("Going to deep sleep");
+    Serial.flush();
+    delay(10);
+    ESP.deepSleep(60e6); //0=infinite, 30e6 =30 seconds
+    
+  }
+
+
+  while(true) {
+    delay(2000);
+    Serial.println("Finished");
+  }
+}
+
+
+bool wifi_connect(){
+  Serial.print("Connecting to ");
+  Serial.println(WLAN_SSID);
+
+  #define TIMEOUT_WIFI_CONNECT 30000
+  unsigned long wifi_connect_start_time=millis();
+
+  WiFi.begin(WLAN_SSID, WLAN_PASS);
+  while (WiFi.status() != WL_CONNECTED) {
+    digitalWrite(LED_BUILTIN,!digitalRead(LED_BUILTIN));
+    delay(500);
+    Serial.print(".");
+    if (millis()-wifi_connect_start_time > TIMEOUT_WIFI_CONNECT) { //timeout
+      return false;
+    }
+  }
+  Serial.println();
+
+  Serial.println("WiFi connected");
+  Serial.println("IP address: "); Serial.println(WiFi.localIP());
+  digitalWrite(LED_BUILTIN,HIGH);
+  return true;
+}
+
+bool MQTT_connect() {
+  int8_t ret;
+
+  // Stop if already connected.
+  if (mqtt.connected()) {
+    return true;
+  }
+
+  Serial.print("Connecting to MQTT... ");
+
+  uint8_t retries = 3;
+  while ((ret = mqtt.connect()) != 0) { // connect will return 0 for connected
+    Serial.println(mqtt.connectErrorString(ret));
+    Serial.println("Retrying MQTT connection in 5 seconds...");
+    mqtt.disconnect();
+    delay(5000);  // wait 5 seconds
+    retries--;
+    if (retries == 0) {
+      return false;
+    }
+  }
+  Serial.println("MQTT Connected!");
+  statusPub.publish("online");
+  return true;
+}
+
+
+
+void scan() {
+  Serial.println("Wifi scan started");
+
+  // WiFi.scanNetworks will return the number of networks found
+  Serial.println("Wifi scan ended");
+  stations_found=WiFi.scanNetworks();
+  if (stations_found == 0) {
+    Serial.println("no networks found");
+  } else {
+    Serial.print(stations_found);
+    Serial.println(" networks found");
+    for (int i = 0; i < stations_found; ++i) {
+      scan_SSID[i]=WiFi.SSID(i);
+
+      scan_RSSI[i]=WiFi.RSSI(i);
+      
+      uint8_t* bssid = WiFi.BSSID(i);
+      memcpy(target_mac, bssid, BSSID_LEN);
+      
+      String stringmac="";
+      for (int i = 0; i < BSSID_LEN; i++) {
+        stringmac.concat(String(target_mac[i], HEX));
+        if (i < BSSID_LEN - 1) {
+          stringmac.concat(":");
+        }
+      }
+      scan_BSSID[i]=stringmac;
+
+      /*if(WiFi.encryptionType(i) == ENC_TYPE_NONE)*/
+
+
+      delay(10);
+    }
+  }
+  Serial.println("");
+
+
+  // Wait a bit before scanning again
+  WiFi.scanDelete();  
+}
+
+
+
+void click1() {
+  Serial.println("Button 1 click.");
+}
+void doubleclick1() {
+  Serial.println("Button 1 doubleclick.");
+}
+void longPressStart1() {
+  Serial.println("Button 1 longPress start");
+}
+
+void click2() {
+  Serial.println("Button 2 click.");
+}
+void doubleclick2() {
+  Serial.println("Button 2 doubleclick.");
+}
+void longPressStart2() {
+  Serial.println("Button 2 longPress start");
+}
+
+
+void click3() {
+  Serial.println("Button 3 click.");
+}
+void doubleclick3() {
+  Serial.println("Button 3 doubleclick.");
+}
+void longPressStart3() {
+  Serial.println("Button 3 longPress start");
+}

test/README

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+
+This directory is intended for PlatformIO Test Runner 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 PlatformIO Unit Testing:
+- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html