# Arduino mega servidor com cartao

**URL:** <https://forum.fazedores.com/t/arduino-mega-servidor-com-cartao/6531>\
**Category:** Arduino\
**Created:** [Julho 16, 2019, 2:24pm UTC](https://forum.fazedores.com/t/arduino-mega-servidor-com-cartao/6531 "2019-07-16T14:24:06Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![raphaicem](https://avatars.discourse-cdn.com/v4/letter/r/9d8465/32.png) [@raphaicem](https://forum.fazedores.com/u/raphaicem)\
**Post date:** [Julho 16, 2019, 2:24pm UTC](https://forum.fazedores.com/t/arduino-mega-servidor-com-cartao/6531/1 "2019-07-16T14:24:06Z")

</div>

Estou tentando modificar um projeto que achei na web muito legal, um servidor com cartão com entradas e saidas  
Gostaria de ampliar as saídas mais quando amplio não funciona, o que pode ser? Gostaria de ajudas.

Este é o site com projeto original, tem o código do arduino e a pagina pronta, funciona certinho - [http://startingelectronics.org/tutorials/arduino/ethernet-shield-web-server-tutorial/SD-card-IO/](http://startingelectronics.org/tutorials/arduino/ethernet-shield-web-server-tutorial/SD-card-IO/)  
Quando eu modifico com mais saidas não funciona o que pode ser, a pagina mostra certo mais não funciona??  
O código do arduino que eu fiz esta ai, estou usando o arduino mega:

#include \<SPI.h\>  
#include \<Ethernet.h\>  
#include \<SD.h\>  
// size of buffer used to capture HTTP requests  
#define REQ\_BUF\_SZ 60

// MAC address from Ethernet shield sticker under board  
byte mac = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };  
IPAddress ip(192, 168, 1, 130); // IP address, may need to change depending on network  
EthernetServer server(80); // create a server at port 80  
File webFile; // the web page file on the SD card  
char HTTP\_req[REQ\_BUF\_SZ] = {0}; // buffered HTTP request stored as null terminated string  
char req\_index = 0; // index into HTTP\_req buffer  
boolean LED\_state[4] = {0}; // stores the states of the LEDs

void setup()  
{  
// disable Ethernet chip  
pinMode(10, OUTPUT);  
digitalWrite(10, HIGH);

```
Serial.begin(9600); // for debugging

// initialize SD card
Serial.println("Initializing SD card...");
if (!SD.begin(4)) {
    Serial.println("ERROR - SD card initialization failed!");
    return; // init failed
}
Serial.println("SUCCESS - SD card initialized.");
// check for index.htm file
if (!SD.exists("index.htm")) {
    Serial.println("ERROR - Can't find index.htm file!");
    return; // can't find index file
}
Serial.println("SUCCESS - Found index.htm file.");
// switches on pins 2, 3 and 5
pinMode(2, INPUT);
pinMode(3, INPUT);
pinMode(5, INPUT);
// 10 LEDs
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
pinMode(23, INPUT);
pinMode(25, INPUT);
pinMode(27, INPUT);
pinMode(29, INPUT);
pinMode(31, INPUT);
pinMode(33, INPUT);

Ethernet.begin(mac, ip); // initialize Ethernet device
server.begin(); // start to listen for clients

```

}

void loop()  
{  
EthernetClient client = server.available(); // try to get client

```
if (client) { // got client?
    boolean currentLineIsBlank = true;
    while (client.connected()) {
        if (client.available()) { // client data available to read
            char c = client.read(); // read 1 byte (character) from client
            // limit the size of the stored received HTTP request
            // buffer first part of HTTP request in HTTP_req array (string)
            // leave last element in array as 0 to null terminate string (REQ_BUF_SZ - 1)
            if (req_index < (REQ_BUF_SZ - 1)) {
                HTTP_req[req_index] = c; // save HTTP request character
                req_index++;
            }
            // last line of client request is blank and ends with \n
            // respond to client only after last line received
            if (c == '\n' && currentLineIsBlank) {
                // send a standard http response header
                client.println("HTTP/1.1 200 OK");
                // remainder of header follows below, depending on if
                // web page or XML page is requested
                // Ajax request - send XML file
                if (StrContains(HTTP_req, "ajax_inputs")) {
                    // send rest of HTTP header
                    client.println("Content-Type: text/xml");
                    client.println("Connection: keep-alive");
                    client.println();
                    SetLEDs();
                    // send XML file containing input states
                    XML_response(client);
                }
                else { // web page request
                    // send rest of HTTP header
                    client.println("Content-Type: text/html");
                    client.println("Connection: keep-alive");
                    client.println();
                    // send web page
                    webFile = SD.open("index.htm"); // open web page file
                    if (webFile) {
                        while(webFile.available()) {
                            client.write(webFile.read()); // send web page to client
                        }
                        webFile.close();
                    }
                }
                // display received HTTP request on serial port
                Serial.print(HTTP_req);
                // reset buffer index and all buffer elements to 0
                req_index = 0;
                StrClear(HTTP_req, REQ_BUF_SZ);
                break;
            }
            // every line of text received from the client ends with \r\n
            if (c == '\n') {
                // last character on line of received text
                // starting new line with next character read
                currentLineIsBlank = true;
            } 
            else if (c != '\r') {
                // a text character was received from client
                currentLineIsBlank = false;
            }
        } // end if (client.available())
    } // end while (client.connected())
    delay(1); // give the web browser time to receive the data
    client.stop(); // close the connection
} // end if (client)

```

}

// checks if received HTTP request is switching on/off LEDs  
// also saves the state of the LEDs  
void SetLEDs(void)  
{  
// LED 1 (pin 6)  
if (StrContains(HTTP\_req, “LED1=1”)) {  
LED\_state[0] = 1; // save LED state  
digitalWrite(6, HIGH);  
}  
else if (StrContains(HTTP\_req, “LED1=0”)) {  
LED\_state[0] = 0; // save LED state  
digitalWrite(6, LOW);  
}  
// LED 2 (pin 7)  
if (StrContains(HTTP\_req, “LED2=1”)) {  
LED\_state[1] = 1; // save LED state  
digitalWrite(7, HIGH);  
}  
else if (StrContains(HTTP\_req, “LED2=0”)) {  
LED\_state[1] = 0; // save LED state  
digitalWrite(7, LOW);  
}  
// LED 3 (pin 8)  
if (StrContains(HTTP\_req, “LED3=1”)) {  
LED\_state[2] = 1; // save LED state  
digitalWrite(8, HIGH);  
}  
else if (StrContains(HTTP\_req, “LED3=0”)) {  
LED\_state[2] = 0; // save LED state  
digitalWrite(8, LOW);  
}  
// LED 4 (pin 9)  
if (StrContains(HTTP\_req, “LED4=1”)) {  
LED\_state[3] = 1; // save LED state  
digitalWrite(9, HIGH);  
}  
else if (StrContains(HTTP\_req, “LED4=0”)) {  
LED\_state[3] = 0; // save LED state  
digitalWrite(9, LOW);  
}  
// LED 5 (pin 23)  
if (StrContains(HTTP\_req, “LED5=1”)) {  
LED\_state[4] = 1; // save LED state  
digitalWrite(23, HIGH);  
}  
else if (StrContains(HTTP\_req, “LED5=0”)) {  
LED\_state[4] = 0; // save LED state  
digitalWrite(23, LOW);  
}  
// LED 6 (pin 25)  
if (StrContains(HTTP\_req, “LED6=1”)) {  
LED\_state[5] = 1; // save LED state  
digitalWrite(25, HIGH);  
}  
else if (StrContains(HTTP\_req, “LED6=0”)) {  
LED\_state[5] = 0; // save LED state  
digitalWrite(25, LOW);  
}  
// LED 7 (pin 27)  
if (StrContains(HTTP\_req, “LED7=1”)) {  
LED\_state[6] = 1; // save LED state  
digitalWrite(27, HIGH);  
}  
else if (StrContains(HTTP\_req, “LED7=0”)) {  
LED\_state[6] = 0; // save LED state  
digitalWrite(27, LOW);  
}  
// LED 8 (pin 29)  
if (StrContains(HTTP\_req, “LED8=1”)) {  
LED\_state[7] = 1; // save LED state  
digitalWrite(29, HIGH);  
}  
else if (StrContains(HTTP\_req, “LED8=0”)) {  
LED\_state[7] = 0; // save LED state  
digitalWrite(29, LOW);  
}  
// LED 9 (pin 31)  
if (StrContains(HTTP\_req, “LED9=1”)) {  
LED\_state[8] = 1; // save LED state  
digitalWrite(31, HIGH);  
}  
else if (StrContains(HTTP\_req, “LED9=0”)) {  
LED\_state[8] = 0; // save LED state  
digitalWrite(31, LOW);  
}  
// LED 10 (pin 33)  
if (StrContains(HTTP\_req, “LED10=1”)) {  
LED\_state[9] = 1; // save LED state  
digitalWrite(33, HIGH);  
}  
else if (StrContains(HTTP\_req, “LED10=0”)) {  
LED\_state[9] = 0; // save LED state  
digitalWrite(33, LOW);  
}  
}

// send the XML file with analog values, switch status  
// and LED status  
void XML\_response(EthernetClient cl)  
{  
int analog\_val; // stores value read from analog inputs  
int count; // used by ‘for’ loops  
int sw\_arr = {2, 3, 5}; // pins interfaced to switches

```
cl.print("<?xml version = \"1.0\" ?>");
cl.print("<inputs>");
// read analog inputs
for (count = 2; count <= 5; count++) { // A2 to A5
    analog_val = analogRead(count);
    cl.print("<analog>");
    cl.print(analog_val);
    cl.println("</analog>");
}
// read switches
for (count = 0; count < 3; count++) {
    cl.print("<switch>");
    if (digitalRead(sw_arr[count])) {
        cl.print("ON");
    }
    else {
        cl.print("OFF");
    }
    cl.println("</switch>");
}
// 10 LEDS
// LED1
cl.print("<LED>");
if (LED_state[0]) {
    cl.print("on");
}
else {
    cl.print("off");
}
cl.println("</LED>");
// LED2
cl.print("<LED>");
if (LED_state[1]) {
    cl.print("on");
}
else {
    cl.print("off");
}
cl.println("</LED>");
// LED3
cl.print("<LED>");
if (LED_state[2]) {
    cl.print("on");
}
else {
    cl.print("off");
}
cl.println("</LED>");
// LED4
cl.print("<LED>");
if (LED_state[3]) {
    cl.print("on");
}
else {
    cl.print("off");
}
cl.println("</LED>");    
// LED5
cl.print("<LED>");
if (LED_state[4]) {
    cl.print("on");
}
else {
    cl.print("off");
}
cl.println("</LED>"); 
// LED6
cl.print("<LED>");
if (LED_state[5]) {
    cl.print("on");
}
else {
    cl.print("off");
}
cl.println("</LED>");
// LED7
cl.print("<LED>");
if (LED_state[6]) {
    cl.print("on");
}
else {
    cl.print("off");
}
cl.println("</LED>");
// LED8
cl.print("<LED>");
if (LED_state[7]) {
    cl.print("on");
}
else {
    cl.print("off");
}
cl.println("</LED>");
// LED9
cl.print("<LED>");
if (LED_state[8]) {
    cl.print("on");
}
else {
    cl.print("off");
}
cl.println("</LED>");

```

// LED10  
cl.print("");  
if (LED\_state[9]) {  
cl.print(“on”);  
}  
else {  
cl.print(“off”);  
}  
cl.println("");

```
cl.print("</inputs>");

```

}

// sets every element of str to 0 (clears array)  
void StrClear(char \*str, char length)  
{  
for (int i = 0; i \< length; i++) {  
str[i] = 0;  
}  
}

// searches for the string sfind in the string str  
// returns 1 if string found  
// returns 0 if string not found  
char StrContains(char \*str, char \*sfind)  
{  
char found = 0;  
char index = 0;  
char len;

```
len = strlen(str);

if (strlen(sfind) > len) {
    return 0;
}
while (index < len) {
    if (str[index] == sfind[found]) {
        found++;
        if (strlen(sfind) == found) {
            return 1;
        }
    }
    else {
        found = 0;
    }
    index++;
}

return 0;

```

}

O codigo da pagina :

 Arduino Ajax I/O .IO\_box { float: left; margin: 0 20px 20px 0; border: 1px solid blue; padding: 0 5px 0 5px; width: 120px; } h1 { font-size: 120%; color: blue; margin: 0 0 10px 0; } h2 { font-size: 85%; color: #5734E6; margin: 5px 0 5px 0; } p, form, button { font-size: 80%; color: #252525; } .small\_text { font-size: 70%; color: #737373; } 
# Arduino Ajax I/O

## ENTRADAS ANALOGICAS

A0 used by Ethernet shield

A1 used by Ethernet shield

A2: ...

A3: ...

A4: ...

A5: ...

## ENTRADAS

D0: used by serial RX

D1: used by serial TX

PORTAO CARRO: ...

PORTAO SOCIAL: ...

D4: used by Ethernet shield

PIR 1: ...

## TOMADAS
 LED 1 is OFF (D6)  
  
 LED 2 is OFF (D7)  
  

D10 to D13 used by Ethernet shield

## LAMPADAS INTERNAS
 LED 3 is OFF (D8)  
  
 LED 4 is OFF (D9)  
  
 LED 5 is OFF (D23)  
  
 LED 6 is OFF (D25)  
  

## LAMPADAS EXTERNAS
 LED 7 is OFF (D27)  
  
 LED 8 is OFF (D29)  
  
 LED 9 is OFF (D31)  
  
 LED 10 is OFF (D33)  
  

O que eu fiz errado