Hola a todos.
Estoy tratando de construir con una board Ethernet arduino un dispositivo que haga un ping cada 5 minutos a un servidor, para que un programa que hice en php, se ejecute cada 5 minutos.
El dispositivo debe enviar en la url una variable con un valor, para que el programa en php, ademas de otras funciones, lleve la cuenta de cuantos pings ha hecho el Ethernet arduino. Esa parte funciona bien. Al mirar la base de datos, la misma lleva cuenta correctamente de los pings.
En la segunda parte del proyecto el dispositivo debe recibir la respuesta del servidor y extraer un valor que deseo se muestre en una pantalla lcd.
El código que adjunto mas adelante funcionaba bien, lo descargue, lo modifique y funcionaba bien. Lo seguí toqueteando para mejorarlo, el programa envía los datos, pero ahora no recibe datos ni los muestra.
Tampoco recuerdo la pagina de la que lo descargue.
Este es el código:
/*
Web client
This sketch connects to a website (http://www.google.com)
using an Arduino Wiznet Ethernet shield.
Circuit:
Ethernet shield attached to pins 10, 11, 12, 13
created 18 Dec 2009
by David A. Mellis
modified 9 Apr 2012
by Tom Igoe, based on work by Adrian McEwen
*/
#include <SPI.h>
#include <Ethernet.h>
// Enter a MAC address for your controller below.
// Newer Ethernet shields have a MAC address printed on a sticker on the shield
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
// if you don't want to use DNS (and reduce your sketch size)
// use the numeric IP instead of the name for the server:
// IPAddress server(74,125,232,128); // numeric IP for Google (no DNS)
//char server[] = "http://cl4551f13d.000webhostapp.com/?Origen=Arduino";
char server[] = "cl4551f13d.000webhostapp.com";
// Set the static IP address to use if the DHCP fails to assign
IPAddress ip(192, 168, 0, 177);
IPAddress myDns(192, 168, 0, 1);
// Initialize the Ethernet client library
// with the IP address and port of the server
// that you want to connect to (port 80 is default for HTTP):
EthernetClient client;
// Variables to measure the speed
unsigned long beginMicros, endMicros;
unsigned long byteCount = 0;
bool printWebData = true; // set to false for better speed measurement
void setup() {
// You can use Ethernet.init(pin) to configure the CS pin
//Ethernet.init(10); // Most Arduino shields
//Ethernet.init(5); // MKR ETH shield
//Ethernet.init(0); // Teensy 2.0
//Ethernet.init(20); // Teensy++ 2.0
//Ethernet.init(15); // ESP8266 with Adafruit Featherwing Ethernet
//Ethernet.init(33); // ESP32 with Adafruit Featherwing Ethernet
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
// // start the Ethernet connection:
Serial.println("Initialize Ethernet with DHCP:");
// Si la inicializacion falla
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
// Check for Ethernet hardware present
if (Ethernet.hardwareStatus() == EthernetNoHardware) {
Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :(");
while (true) {
delay(1); // do nothing, no point running without Ethernet hardware
}
}
if (Ethernet.linkStatus() == LinkOFF) {
Serial.println("Ethernet cable is not connected.");
}
// try to congifure using IP address instead of DHCP:
Ethernet.begin(mac, ip, myDns);
} else { // Si la inicializacion Ok
Serial.print("DHCP assigned IP ");
Serial.println(Ethernet.localIP());
}
// Give the Ethernet shield a second to initialize:
delay(1000);
Serial.println("connecting...");
Serial.print("connecting to ");
Serial.print(server);
Serial.println("...");
// if you get a connection, report back via serial:
if (client.connect(server, 80)) {
Serial.print("connected to ");
Serial.println(client.remoteIP());
// Make a HTTP request:
client.println("GET /index.php?Origen=Arduino HTTP/1.1");
client.println("Host: cl4551f13d.000webhostapp.com");
client.println("Connection: close");
client.println();
} else {
// if you didn't get a connection to the server:
Serial.println("connection failed");
}
beginMicros = micros();
}
void loop() {
// =================================================================================================
// if there are incoming bytes available
// from the server, read them and print them:
int len = client.available();
//byteCount = 0;
if (len > 0) {
byte buffer[80];
if (len > 80) len = 80;
client.read(buffer, len);
if (printWebData) {
Serial.write(buffer, len); // show in the serial monitor (slows some boards)
}
byteCount = byteCount + len;
} else {
Serial.write("Nada recibido");
}
// if the server's disconnected, stop the client:
if (!client.connected()) {
endMicros = micros();
Serial.println();
Serial.println("disconnecting.");
client.stop();
Serial.print("Received ");
Serial.print(byteCount);
Serial.print(" bytes in ");
float seconds = (float)(endMicros - beginMicros) / 1000000.0;
Serial.print(seconds, 4);
float rate = (float)byteCount / seconds / 1000.0;
Serial.print(", rate = ");
Serial.print(rate);
Serial.print(" kbytes/second");
Serial.println();
}
// do nothing forevermore:
for (int i = 0; i <= 60; i++) {
delay(1000);
}
}
sdfddfg
