Hello guys
I'm doing a project home automation.
I am using the following condition, but does not. Because?
code:
if(readString.indexOf("AlarmeOn")>=0 && digitalRead(9)==HIGH)
{
digitalWrite(alarme, HIGH);
}
Either your read string does not contain "AlarmeOn" or pin 9 is LOW, Other than that it is difficult to say without seeing the content of the string and your full code.
Hi,
Check your spelling of your variables, uppercase and lower case is important.
Can you please post a copy of your sketch, using code tags?
They are made with the </> icon in the reply Menu.
See section 7 http://forum.arduino.cc/index.php/topic,148850.0.html
Tom...... 
When you have problems with if statements not doing what is expected it is helpful to print the conditions involved in the test so that you can see their value(s). To do this is is helpful to put the values into variables. When you print the values print a label so that you know what you are looking at and start/end markers such as < and > so that you can see where the value of the variable starts and ends.
Also, the string class is well known for causing memory problems on the Arduino platform. You should avoid it and use char arrays instead.
the piece of code that works is not within ****
#include <SPI.h>
#include <String.h>
#include <Ethernet.h>
byte mac[] = { 0x90, 0xA2, 0xDA, 0x00, 0x9B, 0x36 }; // Endereço Mac
byte ip[] = { 192, 168, 1, 2 }; // Endereço de Ip da sua Rede
byte gateway[] = {192,168,1,1};
byte subnet[] = {255,255,255,0};
EthernetServer server(8090); // Porta de serviço
int alarme=2;// Pino onde deve ser ligado o led de teste
int janela_coz=9;
String readString = String(30); // string para buscar dados de endereço
boolean jan_coz = false; // Variável para o status do led
boolean activo=false;
void setup(){
// Inicia o Ethernet
Ethernet.begin(mac, ip, gateway, subnet);
// Define o pino como saída
pinMode(alarme, OUTPUT);
// Inicia a comunicação Serial
Serial.begin(9600);
}
void loop(){
// Criar uma conexão de cliente
EthernetClient client = server.available();
if (client) {
while (client.connected())
{
if (client.available())
{
char c = client.read();
// ler caractere por caractere vindo do HTTP
if (readString.length() < 30)
{
// armazena os caracteres para string
readString += (c);
}
//se o pedido HTTP terminou
if (c == '\n')
{
// vamos verificar se o LED deve ser ligado
// Se a string possui o texto L=Ligar
//****************************************************************************
if(readString.indexOf("Ligar_Alarme")>0 && digitalRead(janela_coz)==HIGH)
{
digitalWrite(alarme,HIGH);
jan_coz = true;
}
//***********************************************************************************
// Se a string possui o texto L=Desligar
if(readString.indexOf("Desli_Alarme")>=0)
{
// O Led vai ser desligado
digitalWrite(alarme, LOW);
jan_coz = false;
}
// dados HTML de saída começando com cabeçalho padrão
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println();
client.print("<font size='20'>");
if (jan_coz) {
client.print("AlarmeLigado");
} else {
client.print("AlarmeDesligado");
}
//limpa string para a próxima leitura
readString="";
// parar cliente
client.stop();
}
}
}
}
}
What do you see if you print readString.indexOf("Ligar_Alarme") and digitalRead(janela_coz) before the if statement ?
How do you know that the code is even reaching that section ? Suppose that c never equals '\n' what would happen ? Where is the serial input coming from ?
if janela_coz == HIGH and then readString.indexOf ("Ligar_Alarme")> = 0 the condition is made. If not contrary.
#include <SPI.h>
#include <String.h>
#include <Ethernet.h>
byte mac[] = { 0x90, 0xA2, 0xDA, 0x00, 0x9B, 0x36 }; // Endereço Mac
byte ip[] = { 192, 168, 1, 2 }; // Endereço de Ip da sua Rede
byte gateway[] = {192,168,1,1};
byte subnet[] = {255,255,255,0};
EthernetServer server(8090); // Porta de serviço
int alarme=2;// Pino onde deve ser ligado o led de teste
int janela_coz=9;
String readString = String(30); // string para buscar dados de endereço
boolean jan_coz = false; // Variável para o status do led
boolean activo=false;
void setup(){
// Inicia o Ethernet
Ethernet.begin(mac, ip, gateway, subnet);
// Define o pino como saída
pinMode(alarme, OUTPUT);
// Inicia a comunicação Serial
Serial.begin(9600);
}
void loop(){
// Criar uma conexão de cliente
EthernetClient client = server.available();
if (client) {
while (client.connected())
{
if (client.available())
{
char c = client.read();
// ler caractere por caractere vindo do HTTP
if (readString.length() < 30)
{
// armazena os caracteres para string
readString += (c);
}
//se o pedido HTTP terminou
if (c == '\n')
{
// vamos verificar se o LED deve ser ligado
// Se a string possui o texto L=Ligar
//****************************************************************************
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[b]Serial.println(readString.indexOf("Ligar_Alarme"));
Serial.println(digitalRead(janela_coz));
[/b]
??????????????????????????????????????????????????????????
if(readString.indexOf("Ligar_Alarme")>0 && digitalRead(janela_coz)==HIGH)
{
digitalWrite(alarme,HIGH);
jan_coz = true;
}
//***********************************************************************************
// Se a string possui o texto L=Desligar
if(readString.indexOf("Desli_Alarme")>=0)
{
// O Led vai ser desligado
digitalWrite(alarme, LOW);
jan_coz = false;
}
// dados HTML de saída começando com cabeçalho padrão
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println();
client.print("<font size='20'>");
if (jan_coz) {
client.print("AlarmeLigado");
} else {
client.print("AlarmeDesligado");
}
//limpa string para a próxima leitura
readString="";
// parar cliente
client.stop();
}
}
}
}
}