Hi there!
(sorry for my english 
)
I'm trying to make a project with Arduino for reading the energy consumption of my house and the temperature of each room. I'd like to show the data in a LCD and upload them to devicehub.net with an ENC28J60 Ethernet adapter.
The problem is: when I initialize the emonlib sensors, Arduino starts doing weird things (rare characters on the screen, resets, etc).
Here is the code:
#include "DHT.h"
#include "EmonLib.h" // Librería para medir potencia
#include <EtherCard.h>
#include <IRremote.h> // Librería para mando IR
#include <LiquidCrystal.h> // Librería para LCD
#define DHTTYPE DHT11 // Sensor de temperatura DHT 11
#define DHTPIN 3 // Sensor de temp conectado al pin TRES
int RECV_PIN = 2; // Mando IR conectado al pin 2
int maxh=0, minh=100, maxt=0, mint=100; //Variables para ir comprobando maximos y minimos sensor
// ethernet interface mac address, must be unique on the LAN
static byte mymac[] = {
0x74,0x69,0x69,0x2D,0x30,0x31 };
byte Ethernet::buffer[700];
static uint32_t timer;
char website[] PROGMEM = "www.devicehub.net";
EnergyMonitor emon1, emon2, emon3; // Creamos instancia del sensor de corriente
IRrecv irrecv(RECV_PIN); // Creamos instancia del IR
decode_results results;
LiquidCrystal lcd(9, 8, 7, 6, 5, 4); // Creamos instancia del LCD
DHT dht(DHTPIN, DHTTYPE); //Creamos instancia del sensor de temperatura
// called when the client request is complete
static void my_callback (byte status, word off, word len) {
Ethernet::buffer[off+300] = 0;
}
void setup()
{
Serial.begin(9600);
emon1.current(0,60.606);
emon2.current(1,60.606);
emon3.current(2,60.606);
if (ether.begin(sizeof Ethernet::buffer, mymac, 10) == 0)
Serial.println( "Failed to access Ethernet controller");
if (!ether.dhcpSetup())
Serial.println("DHCP failed");
ether.printIp("IP: ", ether.myip);
ether.printIp("GW: ", ether.gwip);
ether.printIp("DNS: ", ether.dnsip);
if (!ether.dnsLookup(website))
Serial.println("DNS failed");
ether.printIp("SRV: ", ether.hisip);
irrecv.enableIRIn(); // Inicializamos el IR
lcd.print("Preparado");
}
void loop()
{
int h = dht.readHumidity(); //Variable para humedad instantanea
int t = dht.readTemperature(); // Variable para temperatura instantanea
maxmin(t, h); //Calculamos máximo y minimo
ether.packetLoop(ether.packetReceive());
if (millis() > timer) {
char queryString[256] = {
0 };
sprintf(queryString, "?apiKey=014d8689-6cd7-4f9d-814b-152aab1c981e&hum=%d&temp=%d", (int)h,(int)t);
timer = millis() + 5000;
ether.browseUrl(PSTR("/io/213/"), queryString, website, my_callback);
}
else if (irrecv.decode(&results)) // Si recibimos petición del IR
{
if (results.value==3225413655)
temperaturaLCD(t, h);
else
{
lcd.clear();
lcd.setCursor(6,1);
lcd.print("--ERROR--");
lcd.setCursor(6,2);
lcd.print("*********");
lcd.setCursor(5,3);
lcd.print(results.value, DEC);
}
irrecv.resume(); // Receive the next value
}
}
//FUNCION PARA MOSTRAR TEMPERATURA POR LCD
void temperaturaLCD (int t, int h)
{
lcd.setCursor(0,2);
lcd.print(" Humedad: ");
lcd.print(h);
lcd.print(" %");
lcd.setCursor(0,0);
lcd.print(" Temp: ");
lcd.print(t);
lcd.print(" C");
lcd.setCursor(0,3);
lcd.print("Max: ");
lcd.print(maxh);
lcd.print(" % ");
lcd.print("Min: ");
lcd.print(minh);
lcd.print(" %");
lcd.setCursor(0,1);
lcd.print("Max: ");
lcd.print(maxt);
lcd.print(" C ");
lcd.print("Min: ");
lcd.print(mint);
lcd.print(" C");
} // FIN TEMPERATURALCD
// FUNCION PARA CALCULAR MAX Y MIN DE TEMPERATURA
void maxmin( float t, float h)
{
if (maxh<h)
maxh=h;
if (h<minh)
minh=h;
if (maxt<t)
maxt=t;
if (t<mint)
mint=t;
} // FIN MAXMIN
And, if I comment the following lines:
emon1.current(0,60.606);
emon2.current(1,60.606);
emon3.current(2,60.606);
or only initialize one of them, it all works properly.
I have no idea, can somebody give me a solution?
Thank you so much.