arduino一些内容

arduino 套件使用说明书V1.0.pdf，

步进电机

DHT11

传感器另外一脚要接A0

/*

  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>



#define DHT11_PIN 1



// 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[] = "192.168.1.95";    // name address for Google (using DNS)



// Set the static IP address to use if the DHCP fails to assign

IPAddress ip(192,168,99,177);



// 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;





void uploadData(String c,String h){

    // if you get a connection, report back via serial:

  if (client.connect(server, 6543)) {

    Serial.println("connected");

    // Make a HTTP request:

    client.println("GET /DHT11Data.ashx?C="+c+"&h="+h+" HTTP/1.1");

    client.println("Host:192.168.1.95");

    client.println("Connection: close");

    

    client.println();

    delay(10);

    // if there are incoming bytes available 

    // from the server, read them and print them:

    while (client.available()) {

      char c = client.read();

      Serial.print(c);

    }

  } 

  else {

    // kf you didn't get a connection to the server:

    Serial.println("connection failed");

  }

  

    // if the server's disconnected, stop the client:

  if (!client.connected()) {

    Serial.println();

    Serial.println("disconnecting.");

    client.stop();



    // do nothing forevermore:

  

  }

}



byte read_dht11_dat()

{

  byte i = 0;

  byte result = 0;

  for(i=0;i<8;i++)

  {

    while(!(PINC&_BV(DHT11_PIN)));

    delayMicroseconds(30);

    if(PINC&_BV(DHT11_PIN))

      result|=(1<<(7-i));

    while((PINC&_BV(DHT11_PIN)));

  }

  return result;

}



void setup() {

  

   DDRC|=_BV(DHT11_PIN);

  PORTC|=_BV(DHT11_PIN);

 // Open serial communications and wait for port to open:

  Serial.begin(9600);

   while (!Serial) {

    ; // wait for serial port to connect. Needed for Leonardo only

  }



  // start the Ethernet connection:

  if (Ethernet.begin(mac) == 0) {

    Serial.println("Failed to configure Ethernet using DHCP");

    // no point in carrying on, so do nothing forevermore:

    // try to congifure using IP address instead of DHCP:

    Ethernet.begin(mac, ip);

  }

  // give the Ethernet shield a second to initialize:

  delay(1000);

  Serial.println("Ready");





}





void loop()

{

  byte dht11_dat[5];

  byte dht11_in;

  byte i;

  PORTC &= ~_BV(DHT11_PIN);

  delay(18);

  PORTC|=_BV(DHT11_PIN);

  delayMicroseconds(40);

  DDRC &= ~_BV(DHT11_PIN);

  delayMicroseconds(40);

  dht11_in = PINC & _BV(DHT11_PIN);

  if(dht11_in)

  {

    Serial.println("dht11 start condition 1 not met");

    return;

  }



  delayMicroseconds(80);

  dht11_in=PINC & _BV(DHT11_PIN);

  if(!dht11_in)



  {

    Serial.println("dht11 start condition 2 not met");

    return;

  }



  delayMicroseconds(80);

  for(i=0;i<5;i++)

    dht11_dat[i]=read_dht11_dat();

  DDRC|=_BV(DHT11_PIN);

  PORTC|=_BV(DHT11_PIN);

  byte dht11_check_sum = dht11_dat[0]+dht11_dat[1]+dht11_dat[2]+dht11_dat[3];

  if(dht11_dat[4]!=dht11_check_sum)

  {

    Serial.println("DHT11 checksum error");

  }



 uploadData(String(dht11_dat[2]) +"." +String(dht11_dat[3]),String(dht11_dat[0]) +"." +String(dht11_dat[1]) );

 

  Serial.print("Current humdity= ");

  Serial.print(String(dht11_dat[0]));

  Serial.print(".");

  Serial.print(dht11_dat[1],DEC);

  Serial.print("%");

  Serial.print("temperature = ");

  Serial.print(dht11_dat[2],DEC);

  Serial.print(".");

  Serial.print(dht11_dat[3],DEC);

  Serial.println("C");



  delay(1000);

}

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