_Die_AMPEL_ESP_v2.ino
#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
#include <ESP8266HTTPClient.h>
#include <WiFiClient.h>
#include <TextFinder.h>
/***************************** TIME SYNCHRONISATION LIBRARIES *****************************/
#include <NTPClient.h>
#include <WiFiUdp.h>
/***************************** PRIVATE INCLUDES *****************************/
#include "_Die_AMPEL_ESP_v2.h"
#include "Server.h"
#include "HTTP.h"
#define WIFI_CONNECT_TIMEOUT 15
#define GET_STATES_INTERVAL 2000
/***************************** VARIABLES *****************************/
status_flags_t Status;
/**** Headquarters ****/
//const char* ssid = "Waifaaii";
//const char* password = "luckbastonly_2";
/**** Vodafone router ****/
const char* ssid = "WLAN1-DB246C";
const char* password = "9C728FC499A";
/**** My Hotspot ****/
//const char* ssid = "Ampel";
//const char* password = "11332244";
/**** Edunet network ****/
//const char* ssid = "SWSEDU02";
//const char* password = "IoT.4.SPE";
char Comand_line[16]; //(max length of line is 10 so far)
uint8_t i = 0;
uint8_t WiFi_conect_tries = 0;
const char* serverName = "http://ampel101.000webhostapp.com/post.php";
const char* initAddress = "http://ampel101.000webhostapp.com/ip.php"; /**********change to the right file adress*********/
const char* Get_states_addr = "http://ampel101.000webhostapp.com/Get.php";
uint16_t Get_states_timer = 0;
// Keep this API Key value to be compatible with the PHP code provided in the project page.
// If you change the apiKeyValue value, the PHP file /post-esp-data.php also needs to have the same key
String Ampel_state_apiKey = "(t#L~)U|dYjU1Yc~";
ESP8266WebServer server(80); // Server variable to perform the answer to the POST Request
WiFiClient client;
HTTPClient http;
char global_IP_Server[] = "checkip.dyndns.org";
char externalIP[17];
char externalIP_password[] = "113322";
char AccessPoint_name[] = "Die_Ampel_AccessPoint";
char AccessPoint_password[] = "BohdankoUsmanko";
Wifi_reconnect_t Wifi_timers; // Structure for correct search for the internet connection (in the case if WiFi is not connected)
/***************************** FUNKTION PROTOTYPES *****************************/
void UART_routine(status_flags_t* Status, char* Line);
void Reconnect_routine(status_flags_t* Status, Wifi_reconnect_t* Wifi_timers);
void Get_states_routine(status_flags_t* Status, const char* address);
/************************************* SETUP ************************************/
void setup()
{
Serial.begin(9600);
pinMode(2, OUTPUT); // signal LED
/***************************** WiFi Connection *****************************/
WiFi.begin(ssid, password);
Serial.println("\nConnecting to WiFi network " + (String)ssid);
while ((WiFi.status() != WL_CONNECTED) && (WiFi_conect_tries <= WIFI_CONNECT_TIMEOUT))
{
digitalWrite(2, !(digitalRead(2))); // LED Blinking during connection
delay(1000);
Serial.print(".");
WiFi_conect_tries++;
}
if(WiFi_conect_tries >= WIFI_CONNECT_TIMEOUT)
{
Serial.println("No WiFi connection\nESP-01 is Creating an Acess Point");
Serial.println("Network Name: " + (String)AccessPoint_name);
Serial.println("Network Password: " + (String)AccessPoint_password);
WiFi.softAP(AccessPoint_name, AccessPoint_password);
Status.WiFi_Connected = 0;
digitalWrite(2, HIGH); // NO WiFi! Turn OFF the LED
}
else
{
Serial.println("\nConnected to WiFi");
Serial.print("Local IP: ");
Serial.println(WiFi.localIP());
digitalWrite(2, LOW); // WiFi connected! Turn ON the LED
Get_Ext_IP(externalIP, global_IP_Server);
Serial.print("WAN IP: ");
Serial.println(externalIP);
POST_Ext_IP(initAddress, externalIP, externalIP_password);
Status.WiFi_Connected = 1;
server.on("/SET", HTTP_POST, handlePOST); /* Call the 'handlePOST' function when a POST request is made to URI "/SET". Reference: https://tttapa.github.io/ESP8266/Chap10%20-%20Simple%20Web%20Server.html LOOK FOR: <form action="/login" method="POST"> */
server.on("/", handleEMPTY);
server.begin(); // Actually start the server
Serial.println("HTTP server started");
}
}
/************************************* LOOP ************************************/
void loop()
{
UART_routine(&Status, Comand_line); // Work with UART Comands received from Arduino
Reconnect_routine(&Status, &Wifi_timers); // WiFi reconnection will be implemented in the case of missing connection
Get_states_routine(&Status, Get_states_addr);
//server.handleClient(); // Listen for HTTP requests from clients
delay(1);
}
void UART_routine(status_flags_t* Status, char* Line)
{
if(Serial.available() > 0)
{
Line[i] = Serial.read();
if(Line[i] == '\n')
{
Line[i-1] = '\0';
Status->string_received = 1;
i = 0;
}
else
i++;
}
/************* Parcing the Line ************/
if(Status->string_received == 1)
{
//Serial.println(Line);
if(!strcmp(Line, "alive?")) // Func returns: 0 - the contents of both strings are equal; <0 - the first character that does not match has a lower value in ptr1 than in ptr2; >0 - the first character that does not match has a greater value in ptr1 than in ptr2
{
Serial.println("YES");
}
else
{
if((Line[0] == 'p') && (Line[1] == 'o') && (Line[2] == 's') && (Line[3] == 't') && isDigit(Line[4]) && isDigit(Line[5]) && isDigit(Line[6]) && (isDigit(Line[7])) && isDigit(Line[8])) // We have received a post comand
{
send_POST(Line);
}
else
{
if(!strcmp(Line, "ret_time"))
Get_time(Status);
else
{
Serial.println("ERR");
}
}
}
memset(Line, 0, sizeof(Line)); // flush the array
Status->string_received = 0;
}
}
void Reconnect_routine(status_flags_t* Status, Wifi_reconnect_t* Wifi_timers)
{
if(Status->WiFi_Connected == 0) // if WiFi connection is missing
{
if(Status->AP_Created == 0) // if the AP was not created
{
Serial.println("No WiFi connection\nESP-01 is Creating an Acess Point");
Serial.println("Network Name: " + (String)AccessPoint_name);
Serial.println("Network Password: " + (String)AccessPoint_password);
WiFi.softAP(AccessPoint_name, AccessPoint_password);
Status->AP_Created = 1;
}
Wifi_timers->blink_timer++;
Wifi_timers->tries_timer++;
//Serial.println(blink_timer);
/*************************** No WiFi = blinkng with period of BLINK_PERIOD **********************/
if((Wifi_timers->blink_timer >= 0) && (Wifi_timers->blink_timer <= BLINK_TIME))
{
digitalWrite(2, LOW); // aus
}
else
{
if((Wifi_timers->blink_timer > BLINK_TIME) &&(Wifi_timers->blink_timer < BLINK_PERIOD))
{
digitalWrite(2, HIGH); // ein
}
else
{
if(Wifi_timers->blink_timer >= BLINK_PERIOD)
{
Wifi_timers->blink_timer = 0;
}
}
}
/*************************** Tries to connect to the Wifi Again **********************/
if(Wifi_timers->tries_timer >= WIFI_CONNECTION_INTERVAL)
{
if(Wifi_timers->delay_timer == 0) // if we are not waiting for a connection NOW
{
Serial.println("WiFi Connection with network " + (String)ssid + " try"); // Start a connection
WiFi.begin(ssid, password);
}
Wifi_timers->delay_timer++;
if(Wifi_timers->delay_timer >= WIFI_WAIT_DELAY) // delay is finished
{
if(Wifi_timers->check_number < WIFI_CONNECTION_CHECKS) // if we are not checking WiFi too long
{
if(WiFi.status() == WL_CONNECTED)
{
Serial.println("\nConnected to WiFi network " + (String)ssid);
Serial.print("Local IP: ");
Serial.println(WiFi.localIP());
digitalWrite(2, LOW); // WiFi connected! Turn ON the LED
Get_Ext_IP(externalIP, global_IP_Server);
Serial.print("WAN IP: ");
Serial.println(externalIP);
POST_Ext_IP(initAddress, externalIP, externalIP_password);
Status->WiFi_Connected = 1;
Status->AP_Created = 0;
Wifi_timers->tries_timer = 0;
Wifi_timers->delay_timer = 0;
Wifi_timers->check_number = 0;
}
}
else // Return to being an AP
{
WiFi.softAP(AccessPoint_name, AccessPoint_password);
Wifi_timers->tries_timer = 0;
Wifi_timers->delay_timer = 0;
Wifi_timers->check_number = 0;
}
Wifi_timers->check_number++;
}
}
}
}
/*
* Each GET_STATES_INTERVAL miliseconds - recuest to the Website
*/
void Get_states_routine(status_flags_t* Status, const char* address)
{
Get_states_timer++;
if(Get_states_timer >= GET_STATES_INTERVAL)
{
Get_Ampel_states(Status, address);
Get_states_timer = 0;
}
}
