first commit

.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

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:esp12e]
+platform = espressif8266
+board = esp12e
+framework = arduino
+lib_deps = 
+	ostaquet/SIM800L HTTP connector@^1.14.0
+	adafruit/Adafruit SSD1306@^2.5.13
+	adafruit/Adafruit GFX Library@^1.11.11
+	dancol90/ESP8266Ping@^1.1.0
+monitor_speed = 115200

readme.md

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+# ONT status checker using esp8266, sim 800 l (using http get) and Oled display
+
+### check the wifi and internet status of ont using esp8266, then sim 800 l using get request end to server
+
+![alt text](ont.png)

src/main.cpp

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+#include <Arduino.h>
+
+// for wifi connection
+#include <ESP8266WiFi.h>
+#include <ESP8266Ping.h>  // Library for ping functionality
+// end of wifi
+
+// this is for sim800l
+#include <SoftwareSerial.h>
+#include "SIM800L.h"
+
+#define SIM800_RX_PIN 12
+#define SIM800_TX_PIN 13
+#define SIM800_RST_PIN 14
+// end of sim800l
+
+// this is for oled
+#include <Wire.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_SSD1306.h>
+
+#define SCREEN_WIDTH 128
+#define SCREEN_HEIGHT 64
+#define SCREEN_ADDRESS 0x3C 
+// Declaration for an I2C OLED display
+Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
+// end of oled
+
+const char APN[] = "internet";
+const char URL[] = "http://cekont.mywork-kk.online/data";
+
+// Replace these with your network credentials
+// const char* ssid = "hu";
+// const char* password = "12345679";
+const char* ssid = "HOME";
+const char* password = "88888888";
+
+SIM800L* sim800l;
+
+void displayText(const char* text) {
+  display.clearDisplay();
+  display.setTextSize(1);
+  display.setTextColor(WHITE);
+  display.setCursor(0, 30);
+  display.println(text);
+  display.display();
+}
+void displayText2(const String& text, const String& text2) {
+  display.clearDisplay();
+  display.setTextSize(1);
+  display.setTextColor(WHITE);
+  display.setCursor(0, 20);
+  display.println(text);
+  display.setCursor(0, 40);
+  display.println(text2);
+  display.display();
+  
+}
+
+void setupModule() {
+ // Wait until the module is ready to accept AT commands
+  while(!sim800l->isReady()) {
+    Serial.println(F("Problem to initialize AT command, retry in 1 sec"));
+    displayText2("Problem to initialize AT command,", " retry in 1 sec");
+    delay(1000);
+  }
+
+  // Active echo mode (for some module, it is required)
+  sim800l->enableEchoMode();
+
+  Serial.println("Module ready");
+  displayText("Module ready");
+  delay(1000);
+
+  // Print version
+  Serial.print("Module ");
+  Serial.println(sim800l->getVersion());
+  Serial.print("Firmware ");
+  Serial.println(sim800l->getFirmware());
+  displayText2("Module : " + String(sim800l->getVersion()), "Firmware : " + String(sim800l->getFirmware()));
+  delay(1000);
+
+  // Print SIM card status
+  Serial.print(F("SIM status "));
+  Serial.println(sim800l->getSimStatus());
+  displayText2("SIM status : ", String(sim800l->getSimStatus()));
+  delay(1000);
+
+  // Print SIM card number
+  Serial.print("SIM card number ");
+  Serial.println(sim800l->getSimCardNumber());
+  displayText2("SIM card number : ", String(sim800l->getSimCardNumber()));
+  delay(1000);
+
+  // Wait for the GSM signal
+  uint8_t signal = sim800l->getSignal();
+  while(signal <= 0) {
+    delay(1000);
+    signal = sim800l->getSignal();
+  }
+
+  if(signal > 5) {
+    Serial.print(F("Signal OK (strenght: "));
+    displayText2(("Signal OK "), ("(strenght: " + String(signal) + ")").c_str());
+    delay(1000);
+  } else {
+    Serial.print(F("Signal low (strenght: "));
+    displayText2(("Signal low "), (" (strenght: " + String(signal) + ")").c_str());
+    delay(1000);
+  }
+  Serial.print(signal);
+  Serial.println(F(")"));
+  delay(1000);
+
+  // Wait for operator network registration (national or roaming network)
+  NetworkRegistration network = sim800l->getRegistrationStatus();
+  while(network != REGISTERED_HOME && network != REGISTERED_ROAMING) {
+    delay(1000);
+    network = sim800l->getRegistrationStatus();
+  }
+  Serial.println(F("Network registration OK"));
+  displayText("Network registration OK");
+  delay(1000);
+
+  Serial.println("End of test protocol");
+  displayText("End of test protocol");
+  delay(1000);
+
+  // Setup APN for GPRS configuration
+  bool success = sim800l->setupGPRS(APN);
+  while(!success) {
+    success = sim800l->setupGPRS(APN);
+    delay(5000);
+  }
+  Serial.println(F("GPRS config OK"));
+  displayText("GPRS config OK");
+  delay(1000);
+}
+
+void getHttpData(const String& params) {
+  Serial.println(F("Start HTTP GET..."));
+  displayText("Start HTTP GET...");
+  delay(1000);
+
+  String url = URL + params;
+
+  // Do HTTP GET communication with 10s for the timeout (read)
+  uint16_t rc = sim800l->doGet(url.c_str(), 20000);
+   if(rc == 200) {
+    // Success, output the data received on the serial
+    Serial.print(F("HTTP GET successful ("));
+    Serial.print(sim800l->getDataSizeReceived());
+    Serial.println(F(" bytes)"));
+    Serial.print(F("Received : "));
+    Serial.println(sim800l->getDataReceived());
+    displayText2("HTTP GET successful ", String(sim800l->getDataSizeReceived()) + " bytes)");
+    delay(1000);
+    displayText2("Received : ", String(sim800l->getDataReceived()));
+    delay(3000);
+  } else {
+    // Failed...
+    Serial.print(F("HTTP GET error "));
+    Serial.println(rc);
+    displayText2("HTTP GET error ", String(rc));
+    delay(1000);
+  }
+
+  delay(1000);
+}
+void setup() {
+  // Initialize Serial Monitor for debugging
+  Serial.begin(115200);
+  while(!Serial);
+
+  if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
+    Serial.println(F("SSD1306 allocation failed"));
+    for(;;); // Don't proceed, loop forever
+  }
+
+  displayText("Starting...");
+  delay(1000);
+
+  // Initialize a SoftwareSerial
+  SoftwareSerial* serial = new SoftwareSerial(SIM800_RX_PIN, SIM800_TX_PIN);
+  serial->begin(9600);
+  delay(1000);
+
+  // Initialize SIM800L driver with an internal buffer of 200 bytes and a reception buffer of 512 bytes, debug disabled
+  sim800l = new SIM800L((Stream *)serial, SIM800_RST_PIN, 200, 512);
+
+  // Equivalent line with the debug enabled on the Serial
+  //sim800l = new SIM800L((Stream *)serial, SIM800_RST_PIN, 200, 512, (Stream *)&Serial);
+
+  Serial.println("Start of test protocol");
+  displayText2("Start of ", "test protocol");
+  delay(1000);
+
+  setupModule();
+  WiFi.begin(ssid, password);
+
+  
+}
+void loop() {
+  // Establish GPRS connectivity (5 trials)
+  bool connected = false;
+  for(uint8_t i = 0; i < 5 && !connected; i++) {
+    delay(1000);
+    connected = sim800l->connectGPRS();
+  }
+
+  // Check if connected, if not reset the module and setup the config again
+  if(connected) {
+    Serial.print(F("GPRS connected with IP "));
+    Serial.println(sim800l->getIP());
+    displayText2("GPRS connected with IP ", String(sim800l->getIP()));
+    delay(2000);
+  } else {
+    Serial.println(F("GPRS not connected !"));
+    Serial.println(F("Reset the module."));
+    displayText2("GPRS not connected !", "Reset the module.");
+    delay(1000);
+    sim800l->reset();
+    setupModule();
+    return;
+  }
+
+  // connect to wifi in 5 seconds
+  delay(3000);
+  if (WiFi.status() == WL_CONNECTED) {
+    Serial.println("WiFi connected");
+
+    // Ping Google's public DNS server (8.8.8.8)
+    if (Ping.ping("www.google.com")) {
+      Serial.println("Internet connected");
+      displayText2("WiFi connected", "Internet connected");
+      delay(2000);
+      getHttpData("?id=1&wifi=connected&internet=connected");
+    } else {
+      Serial.println("Internet disconnected");
+      displayText2("WiFi connected", "Internet disconnected");
+      delay(2000);
+      getHttpData("?id=1&wifi=connected&internet=disconnected");
+    }
+  } else {
+    Serial.println("WiFi disconnected");
+    displayText2("WiFi disconnected", "Internet disconnected");
+    delay(2000);
+    getHttpData("?id=1&wifi=disconnected&internet=disconnected");
+  }
+
+
+  // Close GPRS connectivity (5 trials)
+  bool disconnected = sim800l->disconnectGPRS();
+  for(uint8_t i = 0; i < 5 && !connected; i++) {
+    delay(1000);
+    disconnected = sim800l->disconnectGPRS();
+  }
+  
+  if(disconnected) {
+    Serial.println(F("GPRS disconnected !"));
+    displayText("GPRS disconnected !");
+    delay(1000);
+  } else {
+    Serial.println(F("GPRS still connected !"));
+    displayText2("GPRS disconnected !", "GPRS still connected !");
+    delay(1000);
+  }
+
+  // // Go into low power mode
+  // bool lowPowerMode = sim800l->setPowerMode(MINIMUM);
+  // if(lowPowerMode) {
+  //   Serial.println(F("Module in low power mode"));
+  //   displayText("Module in low power mode");
+  //   delay(1000);
+  // } else {
+  //   Serial.println(F("Failed to switch module to low power mode"));
+  //   displayText2("Failed to switch module to low power mode", "");
+  //   delay(1000);
+  // }
+
+  // End of program... wait...
+  // while(1);
+  delay(500);
+}

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