WizFi250 Twitter Example

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    WizFi250 Twitter Example

     Arduino provides the twitter example code. This code sends the twitting message to the server via proxy server (arduino-tweet.appsopt.com). In this posting, we are going to explain how to send the twitting message using Arduino twitter example and WizFi250 (the Wi-Fi module).

    Step 1 : System Configuration

    WizFi250 Twitter 01

    Step 2 : Get a token to post a message using OAuth

    http://arduino-tweet.appspot.com/oauth/twitter/login

    WizFi250 Twitter 02

     

    WizFi250 Twitter 03

    WizFi250 Twitter 04

    Step 3 : Hardware

    We connect the WizFi250-EVT with Arduino Mega board as below picture.

    WizFi250 Twitter 05

     

    Step 4: Software

    You can download below source code from https://github.com/Wiznet/Arduino_WizFi250. The directory is located in ‘Software/WizFi250/Example/WizFi250_Twitter’

     

    #include <Arduino.h>

    #include <SPI.h>

    #include <IPAddress.h>

    #include “WizFi250.h”

    #include “WizFi250_tcp_client.h”

     

    #define SSID    “WiznetKaizen”

    #define KEY     “qazxswedc”

    #define AUTH    “”

     

    #define REMOTE_PORT 80

    #define TOKEN “Your-Token”    // For Wiznet_Maker

     

    #define LIB_DOMAIN “arduino-tweet.appspot.com”

     

    char server[] = LIB_DOMAIN;

    unsigned long lastConnectionTime = 0;

    const unsigned long postingInterval = 60000;

     

    boolean Wifi_setup = false;

    boolean lastConnected = false;

    boolean isFirst = true;

     

    WizFi250        wizfi250;

    WizFi250_TCP_Client myClient(server, REMOTE_PORT);

     

    //The setup function is called once at startup of the sketch

    void setup()

    {

    // Add your initialization code here

    String str;

    char ssid[50],key[50];

     

    Serial.begin(9600);

    Serial.println(“\r\nSerial Init”);

     

    wizfi250.begin();

    wizfi250.setDebugPrint(4);

    wizfi250.hw_reset();

     

    wizfi250.sync();

    wizfi250.setDhcp();

     

    Serial.println(“Input SSID”);

    str = getStr();

    str.toCharArray(ssid,50);

    Serial.println(“Input KEY”);

    str = getStr();

    str.toCharArray(key,50);

     

    for(int i=0; i<10; i++)     // Try to join 30 times

    {

    if( wizfi250.join(ssid,key,AUTH) == RET_OK )

    {

    Wifi_setup = true;

    break;

    }

    }

    }

     

    void loop()

    {

    if( Wifi_setup )

    {

    wizfi250.RcvPacket();

     

    if( myClient.available() )

    {

    char c = myClient.recv();

    if( c != NULL )

    Serial.print(c);

    }

    else

    {

    if( !myClient.getIsConnected() && lastConnected )

    {

    Serial.println();

    Serial.println(“disconnecting.”);

    myClient.stop();

    }

     

     

    if( isFirst || (((millis() – lastConnectionTime) > postingInterval) && (!myClient.getIsConnected())) )

    {

    Serial.println(“Ready to transmit message”);

    Twitter_Post( inputSerialMessage() );

    isFirst = false;

    }

     

    lastConnected = myClient.getIsConnected();

    }

    }

    }

     

    String inputSerialMessage()

    {

    String SendingMessage=””;

     

    Serial.print(“Input Your Name :”);

    SendingMessage  = “Name : “;

    SendingMessage += getStr();

    SendingMessage += “\r\n”;

     

    Serial.print(“Input Your Comment :”);

    SendingMessage += “Comment : “;

    SendingMessage += getStr();

    SendingMessage += “\r\n”;

     

    return SendingMessage;

    }

     

     

    String getStr()

    {

    String str=””;

     

    while(1)

    {

    if( Serial.available() )

    {

    char inChar = (char)Serial.read();

    Serial.print(inChar);

     

    if(inChar == ‘\r’)   break;

    str += inChar;

    }

    }

    return str;

    }

     

     

    bool Twitter_Post(String thisData)

    {

    uint8_t content_len[6]={0};

    String TxData;

    uint16_t length;

     

    Serial.println(“Connecting..”);

    if(myClient.connect() == RET_OK)

    {

    TxData  = “POST http://”;

    TxData += LIB_DOMAIN;

    TxData += “/update HTTP/1.0\r\n”;

    TxData += “Content-Length: “;

     

    length = thisData.length() + strlen(TOKEN) + 14;

    itoa(length, (char*)content_len, 10);

     

    TxData += (char*)content_len;

    TxData += “\r\n\r\n”;

    TxData += “token=”;

    TxData += TOKEN;

    TxData += “&status=”;

    TxData += thisData;

    TxData += “\r\n”;

     

    Serial.print(TxData);

    myClient.send((String)TxData);

     

    lastConnectionTime = millis();

    }

    }

    Step 5: Demonstration

    1) Configuration To configure Linux Terminal

    • Execute Minicom

    WizFi250 Twitter 06

    • Serial Setup

     

    • If you execute ‘dmesg|grp tty’, you can check the serial port running on Linux

    WizFi250 Twitter 07

    WizFi250 Twitter 08

     

     

    2) Execution Screen

    AT+WNET=1

    [OK]

    Input SSID

     

    Input KEY

    qazxswedc

    <Send AT Command>

    AT+WLEAVE

    [OK]

    <Send AT Command>

    AT+WSET=0,WiznetKaizen

    [OK]

    <Send AT Command>

    AT+WSEC=0,,qazxswedc

    [OK]

    <Send AT Command>

    AT+WJOIN

    Joining : WiznetKaizen

    Successfully joined : WiznetKaizen

    [Link-Up Event]

    IP Addr    : 192.168.201.12

    Gateway    : 192.168.201.1

    [OK]Ready to transmit message

    Input Your Name : WizFi250

    Comment : Hi I am WizFi250

    Connecting..

     

    <Send AT Command>

    AT+FDNS=arduino-tweet.appspot.com,1000

    74.125.203.141

    [OK]

    <Send AT Command>

    AT+SCON=O,TCN,74.125.203.141,80,,0

    [OK] [CONNECT 0]POST http://arduino-tweet.appspot.com/update HTTP/1.0

    Content-Length: 111

     

    token=2815954261-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:status=Name : WizFi250

    Comment : Hi I am WizFi250

     

     

    <Send AT Command>

    AT+SSEND=0,0.0.0.0,80,191

    [0,,,191] [OK]HTTP/1.0 200 OK

    Content-Type: text/html; charset=utf-8

    Cache-Control: no-cache

    Vary: Accept-Encoding

    Date: Tue, 23 Sep 2014 04:03:08 GMT

    Server: Google Frontend

    Alternate-Protocol: 80:quic,p=0.002

     

    OK<Disassociate>

     

    disconnecting.

     

     

    1. To check the message at the Twitter

    WizFi250 Twitter 09
    Below is the demonstration video

     

    WizFi250 Twitter Example

     Arduino provides the twitter example code. This code sends the twitting message to the server via proxy server (arduino-tweet.appsopt.com). In this posting, we are going to explain how to send the twitting message using Arduino twitter example and WizFi250 (the Wi-Fi module).

    Step 1 : System Configuration

    WizFi250 Twitter 01

    Step 2 : Get a token to post a message using OAuth

    http://arduino-tweet.appspot.com/oauth/twitter/login

    WizFi250 Twitter 02

     

    WizFi250 Twitter 03

    WizFi250 Twitter 04

    Step 3 : Hardware

    We connect the WizFi250-EVT with Arduino Mega board as below picture.

    WizFi250 Twitter 05

     

    Step 4: Software

    You can download below source code from https://github.com/Wiznet/Arduino_WizFi250. The directory is located in ‘Software/WizFi250/Example/WizFi250_Twitter’

     

    #include <Arduino.h>

    #include <SPI.h>

    #include <IPAddress.h>

    #include “WizFi250.h”

    #include “WizFi250_tcp_client.h”

     

    #define SSID    “WiznetKaizen”

    #define KEY     “qazxswedc”

    #define AUTH    “”

     

    #define REMOTE_PORT 80

    #define TOKEN “Your-Token”    // For Wiznet_Maker

     

    #define LIB_DOMAIN “arduino-tweet.appspot.com”

     

    char server[] = LIB_DOMAIN;

    unsigned long lastConnectionTime = 0;

    const unsigned long postingInterval = 60000;

     

    boolean Wifi_setup = false;

    boolean lastConnected = false;

    boolean isFirst = true;

     

    WizFi250        wizfi250;

    WizFi250_TCP_Client myClient(server, REMOTE_PORT);

     

    //The setup function is called once at startup of the sketch

    void setup()

    {

    // Add your initialization code here

    String str;

    char ssid[50],key[50];

     

    Serial.begin(9600);

    Serial.println(“\r\nSerial Init”);

     

    wizfi250.begin();

    wizfi250.setDebugPrint(4);

    wizfi250.hw_reset();

     

    wizfi250.sync();

    wizfi250.setDhcp();

     

    Serial.println(“Input SSID”);

    str = getStr();

    str.toCharArray(ssid,50);

    Serial.println(“Input KEY”);

    str = getStr();

    str.toCharArray(key,50);

     

    for(int i=0; i<10; i++)     // Try to join 30 times

    {

    if( wizfi250.join(ssid,key,AUTH) == RET_OK )

    {

    Wifi_setup = true;

    break;

    }

    }

    }

     

    void loop()

    {

    if( Wifi_setup )

    {

    wizfi250.RcvPacket();

     

    if( myClient.available() )

    {

    char c = myClient.recv();

    if( c != NULL )

    Serial.print(c);

    }

    else

    {

    if( !myClient.getIsConnected() && lastConnected )

    {

    Serial.println();

    Serial.println(“disconnecting.”);

    myClient.stop();

    }

     

     

    if( isFirst || (((millis() – lastConnectionTime) > postingInterval) && (!myClient.getIsConnected())) )

    {

    Serial.println(“Ready to transmit message”);

    Twitter_Post( inputSerialMessage() );

    isFirst = false;

    }

     

    lastConnected = myClient.getIsConnected();

    }

    }

    }

     

    String inputSerialMessage()

    {

    String SendingMessage=””;

     

    Serial.print(“Input Your Name :”);

    SendingMessage  = “Name : “;

    SendingMessage += getStr();

    SendingMessage += “\r\n”;

     

    Serial.print(“Input Your Comment :”);

    SendingMessage += “Comment : “;

    SendingMessage += getStr();

    SendingMessage += “\r\n”;

     

    return SendingMessage;

    }

     

     

    String getStr()

    {

    String str=””;

     

    while(1)

    {

    if( Serial.available() )

    {

    char inChar = (char)Serial.read();

    Serial.print(inChar);

     

    if(inChar == ‘\r’)   break;

    str += inChar;

    }

    }

    return str;

    }

     

     

    bool Twitter_Post(String thisData)

    {

    uint8_t content_len[6]={0};

    String TxData;

    uint16_t length;

     

    Serial.println(“Connecting..”);

    if(myClient.connect() == RET_OK)

    {

    TxData  = “POST http://”;

    TxData += LIB_DOMAIN;

    TxData += “/update HTTP/1.0\r\n”;

    TxData += “Content-Length: “;

     

    length = thisData.length() + strlen(TOKEN) + 14;

    itoa(length, (char*)content_len, 10);

     

    TxData += (char*)content_len;

    TxData += “\r\n\r\n”;

    TxData += “token=”;

    TxData += TOKEN;

    TxData += “&status=”;

    TxData += thisData;

    TxData += “\r\n”;

     

    Serial.print(TxData);

    myClient.send((String)TxData);

     

    lastConnectionTime = millis();

    }

    }

    Step 5: Demonstration

    1) Configuration To configure Linux Terminal

    • Execute Minicom

    WizFi250 Twitter 06

    • Serial Setup

     

    • If you execute ‘dmesg|grp tty’, you can check the serial port running on Linux

    WizFi250 Twitter 07

    WizFi250 Twitter 08

     

     

    2) Execution Screen

    AT+WNET=1

    [OK]

    Input SSID

     

    Input KEY

    qazxswedc

    <Send AT Command>

    AT+WLEAVE

    [OK]

    <Send AT Command>

    AT+WSET=0,WiznetKaizen

    [OK]

    <Send AT Command>

    AT+WSEC=0,,qazxswedc

    [OK]

    <Send AT Command>

    AT+WJOIN

    Joining : WiznetKaizen

    Successfully joined : WiznetKaizen

    [Link-Up Event]

    IP Addr    : 192.168.201.12

    Gateway    : 192.168.201.1

    [OK]Ready to transmit message

    Input Your Name : WizFi250

    Comment : Hi I am WizFi250

    Connecting..

     

    <Send AT Command>

    AT+FDNS=arduino-tweet.appspot.com,1000

    74.125.203.141

    [OK]

    <Send AT Command>

    AT+SCON=O,TCN,74.125.203.141,80,,0

    [OK] [CONNECT 0]POST http://arduino-tweet.appspot.com/update HTTP/1.0

    Content-Length: 111

     

    token=2815954261-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:status=Name : WizFi250

    Comment : Hi I am WizFi250

     

     

    <Send AT Command>

    AT+SSEND=0,0.0.0.0,80,191

    [0,,,191] [OK]HTTP/1.0 200 OK

    Content-Type: text/html; charset=utf-8

    Cache-Control: no-cache

    Vary: Accept-Encoding

    Date: Tue, 23 Sep 2014 04:03:08 GMT

    Server: Google Frontend

    Alternate-Protocol: 80:quic,p=0.002

     

    OK<Disassociate>

     

    disconnecting.

     

     

    1. To check the message at the Twitter

    WizFi250 Twitter 09
    Below is the demonstration video

     

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