Question

我的项目是通过网络服务器解锁和锁门。但是我的arduino程序遇到了一些问题。我是arduino程序的新手，这是我的程序。

可以帮我解决这个问题吗？

/*
  Web Server

 A simple web server that shows the value of the analog input pins.
 using an Arduino Wiznet Ethernet shield. 

 Circuit:
 * Ethernet shield attached to pins 10, 11, 12, 13
 * Analog inputs attached to pins A0 through A5 (optional)

 created 18 Dec 2009
 by David A. Mellis
 modifie
 */
 #include<SPI.h>
 #include<Ethernet_v2.h>
 #include<SD.h>
 #define REQ_BUF_SZ   60

// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
#if defined(WIZ550io_WITH_MACADDRESS) // Use assigned MAC address of WIZ550io
;
#else
byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
#endif  
IPAddress ip(192,168,1,177);

// Initialize the Ethernet server library
// with the IP address and port you want to use 
// (port 80 is default for HTTP):
EthernetServer server(80);

File webFile;
char HTTP_req[REQ_BUF_SZ] = {0};
char req_index = 0;
boolean LED_state[2] = {0};

void setup() {
 // Open serial communications and wait for port to open:
  Serial.begin(9600);
   while (!Serial)
   {
    ; // wait for serial port to connect. Needed for Leonardo only
  }

  Serial.println("Initializing SD card........");
  if(!SD.begin(4)){
    Serial.println("Error-SD card initialized");
    return;
  }

  Serial.println("Success-Found cuba.htm file");

  pinMode(8, OUTPUT);

  // start the Ethernet connection and the server:
#if defined(WIZ550io_WITH_MACADDRESS)
  Ethernet.begin(ip);
#else
  Ethernet.begin(mac, ip);
#endif  
  server.begin();
  Serial.print("server is at ");
  Serial.println(Ethernet.localIP());
}


void loop() {
  // listen for incoming clients
  EthernetClient client = server.available();
  if (client) {
    Serial.println("new client");
    // an http request ends with a blank line
    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();

        if (req_index < (REQ_BUF_SZ - 1)) {
                    HTTP_req[req_index] = c;          // save HTTP request character
                    req_index++;
                }

        if (c == '\n' && currentLineIsBlank) {
          // send a standard http response header
          client.println("HTTP/1.1 200 OK");
          if (StrContains(HTTP_req, "ajax_inputs")) {

          client.println("Content-Type: text/html");
          client.println("Connection: Keep-alive");// the connection will be closed after completion of the response
          client.println();
          SetDNS();
          XML_response(client);
          }
          else{
            client.println("Content-Type: text/html");
            client.println("Connection: keep-alive");
            client.println();
          webFile=SD.open("cuba.htm");
          if(webFile){
            while(webFile.available()){
              client.write(webFile.read());
            }
            webFile.close();
          }
       }
          Serial.print(HTTP_req);
          req_index = 0;
          StrClear(HTTP_req, REQ_BUF_SZ);
          break;

        }
        if (c == '\n') {
          // you're starting a new line
          currentLineIsBlank = true;
        } 
        else if (c != '\r') {
          // you've gotten a character on the current line
          currentLineIsBlank = false;
        }
      }
    }
    // give the web browser time to receive the data
    delay(1);
    // close the connection:
    client.stop();
  }
}

void SetDNS(void)
{
    // LED 1 (pin 6)
    if (StrContains(HTTP_req, "DNS=1")) {
        DNS_state[0] = 1;  // save LED state
        digitalWrite(8, HIGH);
    }
    else if (StrContains(HTTP_req, "DNS=0")) {
        DNS_state[0] = 0;  // save LED state
        digitalWrite(8, LOW);
    }
}

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};  // pins interfaced to switches

    cl.print("<?xml version = \"1.0\" ?>");
    cl.print("<inputs>");

    cl.print("<DNS>");
    if (DNS_state[1]) {
        cl.print("on");
    }
    else {
        cl.print("off");
    }
    cl.println("</DNS>");
    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;
}

为了您的信息，这是原始LED程序，但我更改了它。

编译程序时出现错误

WebServer.ino: In function 'void loop()':
WebServer:96: error: 'StrContains' was not declared in this scope
WebServer:101: error: 'SetDNS' was not declared in this scope
WebServer:102: error: 'XML_response' was not declared in this scope
WebServer:118: error: 'StrClear' was not declared in this scope
WebServer.ino: In function 'void SetDNS()':
WebServer:142: error: 'StrContains' was not declared in this scope
WebServer:143: error: 'DNS_state' was not declared in this scope
WebServer:147: error: 'DNS_state' was not declared in this scope
WebServer.ino: In function 'void XML_response(EthernetClient)':
WebServer:162: error: 'DNS_state' was not declared in this scope
'StrContains' was not declared in this scope

所有感谢您的关注

Answer 1

您必须在调用之前声明函数。尝试移动文件底部的循环函数。

我无法解决我的arduino程序错误

1 个答案: