//https://randomnerdtutorials.com/esp8266-pinout-reference-gpios/

#include <ESP8266WiFi.h>
#include <WiFiClient.h> 
#include <ESP8266WebServer.h>
#include <ESP8266HTTPClient.h>

const char *ssid = "rede";
const char *password = "senha";
const int http_port = 8080;

WiFiClient client;
#define D7    13
#define D4    2
#define D3    0

int push=13;
int led=0;
void setup() {

  pinMode(push,INPUT);
  pinMode(led,OUTPUT);
  delay(1000);
  Serial.begin(115200);
  WiFi.mode(WIFI_OFF);delay(1000);
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);Serial.println(".");
  Serial.print("Conectando...");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);Serial.print(".");}
    Serial.println ("");
    Serial.print ("Conectado a ");Serial.println (ssid);
    Serial.print ("Endereço IP: ");Serial.println (WiFi.localIP ());
    Serial.print("MAC: ");    Serial.println(WiFi.macAddress());    
}
void envia(String postData){
    HTTPClient http;
    http.begin(client,"http://modulo4.migueldebarba.com.br/insertleitura.php");
    http.addHeader("Content-Type", "application/x-www-form-urlencoded");
    int httpCode = http.POST(postData);
    String payload = http.getString();
    Serial.println("httpCode:"+String(httpCode));
    Serial.println("payload:"+payload);
    http.end();
  }

  
void loop() {
    digitalWrite(led,HIGH);
    String mac_idmac=WiFi.macAddress();    
    int sensor_idsensor=1;
    float valor=random(0,1024);
    String from="ESP";
    String postData = 
    "mac_idmac="+String(mac_idmac)
    +"&valor="+String(valor)
    +"&sensor_idsensor="+String(sensor_idsensor)
    +"&from="+String(from);
    envia(postData); 
    delay(random(10000,30000));
}