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six1

Bascom Expert



Joined: 27 Feb 2009
Posts: 515

germany.gif
PostPosted: Tue Dec 04, 2012 11:41 am    Post subject: WIZNET Ethernet Functions Reply with quote

Hi,
i will start publishing ETH Protocols for use with Bascom WIZ functions.
During time i've implementet a few protocols for my projects and will change them to work with Mark's WIZ functions.

This is Code out from Projects, so you may have to define one ore more Variables!
I've tried to make it easy, but these things aren't easy...
At all these Protocols are not that easy in Details! So you have to spend a "little" time.
If there are Questions ore somethings missing, feel free to ask.

best, michael

DNS

look up an IP from given URL



Code:
   
   Dim Eth_buffer(280) As Byte  ' <--- general Buffer from your project for WIZ TX-RX



   Dim Idx_DNS As Byte
   Dim Url As String * 50               ' Variable for holding URL String
   Dim Dns_ip As Dword                ' Variable for resolved URL-IP
   Dim Dns_server As Dword         ' Variable for DNS-SERVER IP. This is normaly your Gateway! i.e. 192.168.1.254

   $include "ETH_DNS.INC"

   Url = "www.google.com"
   Dns_server = Maketcp(192 , 168 , 1 , 254)                                          ' <--- insert your Gateway Address
   Idx_dns = 2                                                                                      ' free Socket No.        
   Dns_ip = Dns_resolve_url(url , Idx_dns , Dns_server, Eth_buffer(1))     ' <--- here we go...

   If Dns_ip > 0 Then
     ' Got IP
      print Ip2str(dns_ip)
   Else
     ' sorry, no IP
    print "no ip"
   End If
 



save this as ETH_DNS.INC File

Code:

'*******************************************************************************
'
'  Copyright Michael Koecher aka six1 8/2010
'  -> http://www.six1.net/   michael@koecher-web.de
'
'   http://creativecommons.org/licenses/by-sa/3.0/de/
'
'   Sie dürfen:
'
'     * das Werk bzw. den Inhalt vervielfältigen, verbreiten und öffentlich zugänglich machen
'
'     * Abwandlungen und Bearbeitungen des Werkes bzw. Inhaltes anfertigen
'
'   Zu Den Folgenden Bedingungen:
'
'     * Namensnennung.
'       Sie müssen den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen.
'
'     * Keine kommerzielle Nutzung.
'       Dieses Werk darf nicht für kommerzielle Zwecke verwendet werden.
'
'     * Weitergabe unter gleichen Bedingungen.
'       Wenn Sie das lizenzierte Werk bzw. den lizenzierten Inhalt bearbeiten
'       oder in anderer Weise erkennbar als Grundlage für eigenes Schaffen verwenden,
'       dürfen Sie die daraufhin neu entstandenen Werke bzw. Inhalte nur
'       unter Verwendung von Lizenzbedingungen weitergeben, die mit denen
'       dieses Lizenzvertrages identisch oder vergleichbar sind.
'
'   Wobei gilt:
'
'     * Verzichtserklärung
'       Jede der vorgenannten Bedingungen kann aufgehoben werden, sofern Sie
'       die ausdrückliche Einwilligung des Rechteinhabers dazu erhalten.
'
'     * Sonstige Rechte
'       Die Lizenz hat keinerlei Einfluss auf die folgenden Rechte:
'          - Die gesetzlichen Schranken des Urheberrechts und sonstigen
'            Befugnisse zur privaten Nutzung
'          - Das Urheberpersönlichkeitsrecht des Rechteinhabers
'          - Rechte anderer Personen, entweder am Lizenzgegenstand selber oder
'            bezüglich seiner Verwendung, zum Beispiel Persönlichkeitsrechte abgebildeter Personen.
'
'  Hinweis
'
'      Im Falle einer Verbreitung müssen Sie anderen alle Lizenzbedingungen
'      mitteilen, die für dieses Werk gelten. Am einfachsten ist es,
'      einen Link auf http://creativecommons.org/licenses/by-sa/3.0/de/ einzubinden.
'

'*******************************************************************************
$nocompile



Dim Udp_dns_port_local As Word
Const Udp_dns_port_remote = 53



'*******************************************************************************
'* PUBLIC DECLARATIONS
'*******************************************************************************
'-------------------------------------------------------------------------------
'  Udp_resolve_url_tx  Get IP from URL
'-------------------------------------------------------------------------------
Declare Function Dns_resolve_url(byref Url As String , Byval Socket As Byte , Dns_server As Dword , Byref Buffer() As Byte ) As Dword



Goto Dns_end









'*******************************************************************************
'* DNS Procedures and Functions
'*******************************************************************************




'-------------------------------------------------------------------------------
'  Udp_resolve_url_tx  Get IP from URL
'-------------------------------------------------------------------------------
Function Dns_resolve_url(byref Url As String , Byval Socket As Byte , Dns_server As Dword, byref Buffer() As Byte ) As Dword
      Local Pos As Word , Y As word , Label_len As Byte , Label_len_pos As Byte
      Local Char As String * 1
      Local Dns_timeout As Word                                                 'in ms
      Local Rx_size As Word
      Local Result As Byte


      Dns_resolve_url = 0

      Udp_dns_port_local = 50000
      Udp_dns_port_local = Udp_dns_port_local + Rnd(15000)

      Pos = 1
      'transaction id
      Buffer(pos) = Rnd(&Hff) : Incr Pos
      Buffer(pos) = Rnd(&Hff) : Incr Pos
      ' flags Standard query = &H1000
      Buffer(pos) = &H01 : Incr Pos
      Buffer(pos) = &H00 : Incr Pos
      ' Questions
      Buffer(pos) = &H00 : Incr Pos
      Buffer(pos) = &H01 : Incr Pos
      ' Answer RRs
      Buffer(pos) = &H00 : Incr Pos
      Buffer(pos) = &H00 : Incr Pos
      ' Authority RRs
      Buffer(pos) = &H00 : Incr Pos
      Buffer(pos) = &H00 : Incr Pos
      ' Additional RRs
      Buffer(pos) = &H00 : Incr Pos
      Buffer(pos) = &H00 : Incr Pos

      'first label len
      Buffer(pos) = &H00
      Label_len_pos = Pos
      Incr Pos

      Label_len = 1
      For Y = 1 To Len(url)
         Char = Mid(url , Y , 1)
         If Char = "." Then
            Decr Label_len
            Buffer(label_len_pos) = Label_len
            Label_len_pos = Pos
            Label_len = 0
         End If
         Buffer(pos) = Asc(char)
         Incr Pos
         Incr Label_len
      Next
      ' last label len
      Decr Label_len
      Buffer(label_len_pos) = Label_len
      'length Zero Byte
      Buffer(pos) = &H00 : Incr Pos
      'Request Type: &H0001 => Host Adress
      Buffer(pos) = &H00 : Incr Pos
      Buffer(pos) = &H01 : Incr Pos
      'Class: IN &H0001
      Buffer(pos) = &H00 : Incr Pos
      Buffer(pos) = &H01


      Closesocket socket
      Result = Getsocket(socket , Sock_dgram , Udp_dns_port_local , 0)
      If Result = 255 Then
         ' open failed
         Dns_resolve_url = 0
      Else
        Result = Udpwrite(Dns_server , Udp_dns_port_remote , Socket , Buffer(1) , Pos)
        Dns_timeout = 0
        Dns_resolve_url = 0
        Do
          Incr Dns_timeout
          Rx_size = Socketstat(socket , Sel_recv)           ' get number of bytes waiting
          If Rx_size > 0 Then
             If Rx_size > 280 Then Rx_size = 280
'             Udpreadheader socket
             Result = Udpread(socket , Buffer(1) , Rx_size)

             For Y = 16 To Rx_size
                Pos = 0
                If Buffer(y) = &H00 Then
                  Pos = Y + 1
                  If Buffer(pos) = &H04 Then
                    Incr Pos
                    Exit For
                  End If
                End If
             Next
             If Pos > 0 Then
               Dns_resolve_url = Maketcp(Buffer(pos) , Buffer(pos + 1) , Buffer(pos + 2) , Buffer(pos + 3) )
             Else
               Dns_resolve_url = 0
             End If
             Dns_timeout = &HFFFF
          End If
          Waitms 1
          Reset Watchdog
        Loop Until Dns_timeout > 2000
      End If
      Closesocket Socket
End Function


Dns_end:
 



have fun,

Michael

_________________
For technical reasons, the signature is on the back of this message.


Last edited by six1 on Wed Dec 12, 2012 7:58 am; edited 2 times in total
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six1

Bascom Expert



Joined: 27 Feb 2009
Posts: 515

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PostPosted: Wed Dec 05, 2012 4:50 pm    Post subject: Reply with quote

NTP Timeserver

Code:

    Use_xram = 0

   #if Use_xram = 1
     Dim Eth_buffer(300) As xram Byte
   #else
     Dim Eth_buffer(300) As Byte
   #endif

'-------------------------------------------------------------------------------
' SNTP TIME SERVER
'-------------------------------------------------------------------------------
   Print #1 , "TEST SNTP TIME SERVER"
   Dim Local_time As long
   Time$ = Time(local_time)
   Date$ = Date(local_time)
   Print #1 , "Time before SNTP: " ; Date(local_time) ; ", " ; Time(local_time)

   Dim NTP_ip As Dword
   Dim Sock_sntp As Byte

   Ntp_ip = Maketcp(64.90.182.55 )
   Sock_sntp = Get_free_socket()


   $include "ETH_NTP.inc"

   Call Check_time(sock_sntp , Ntp_ip , Eth_buffer(1))

   Print #1 , "Time after SNTP: " ; Date(local_time) ; ", " ; Time(local_time)
 



save this as "ETH_NTP.inc"

Code:

'*******************************************************************************
'
'  Copyright Michael Koecher aka six1 8/2010
'  -> http://www.six1.net/   michael@koecher-web.de
'
'   http://creativecommons.org/licenses/by-sa/3.0/de/
'
'   Sie dürfen:
'
'     * das Werk bzw. den Inhalt vervielfältigen, verbreiten und öffentlich zugänglich machen
'
'     * Abwandlungen und Bearbeitungen des Werkes bzw. Inhaltes anfertigen
'
'   Zu Den Folgenden Bedingungen:
'
'     * Namensnennung.
'       Sie müssen den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen.
'
'     * Keine kommerzielle Nutzung.
'       Dieses Werk darf nicht für kommerzielle Zwecke verwendet werden.
'
'     * Weitergabe unter gleichen Bedingungen.
'       Wenn Sie das lizenzierte Werk bzw. den lizenzierten Inhalt bearbeiten
'       oder in anderer Weise erkennbar als Grundlage für eigenes Schaffen verwenden,
'       dürfen Sie die daraufhin neu entstandenen Werke bzw. Inhalte nur
'       unter Verwendung von Lizenzbedingungen weitergeben, die mit denen
'       dieses Lizenzvertrages identisch oder vergleichbar sind.
'
'   Wobei gilt:
'
'     * Verzichtserklärung
'       Jede der vorgenannten Bedingungen kann aufgehoben werden, sofern Sie
'       die ausdrückliche Einwilligung des Rechteinhabers dazu erhalten.
'
'     * Sonstige Rechte
'       Die Lizenz hat keinerlei Einfluss auf die folgenden Rechte:
'          - Die gesetzlichen Schranken des Urheberrechts und sonstigen
'            Befugnisse zur privaten Nutzung
'          - Das Urheberpersönlichkeitsrecht des Rechteinhabers
'          - Rechte anderer Personen, entweder am Lizenzgegenstand selber oder
'            bezüglich seiner Verwendung, zum Beispiel Persönlichkeitsrechte abgebildeter Personen.
'
'  Hinweis
'
'      Im Falle einer Verbreitung müssen Sie anderen alle Lizenzbedingungen
'      mitteilen, die für dieses Werk gelten. Am einfachsten ist es,
'      einen Link auf http://creativecommons.org/licenses/by-sa/3.0/de/ einzubinden.
'

'*******************************************************************************
$nocompile



Const Udp_port_ntp_dst = 123
Const Udp_port_ntp_src = 1024

'******************************************************************************
' NTP frame
'******************************************************************************
'Dim Ntp_msg(Eth_max_buf) As Xram Byte At Eth_buffer Overlay
#if Use_xram = 1
  Dim Ntp_b_peer_clock_stratum As Xram Byte At Eth_buffer + 1 Overlay
  Dim Ntp_b_peer_polling_interval As Xram Byte At Eth_buffer + 2 Overlay
  Dim Ntp_b_peer_clock_precision As Xram Byte At Eth_buffer + 3 Overlay
  Dim Ntp_l_root_delay As Xram Long At Eth_buffer + 4 Overlay
  Dim Ntp_l_root_dispersion As Xram Long At Eth_buffer + 8 Overlay
  Dim Ntp_b4_ref_clock_id(4) As Xram Byte At Eth_buffer + 12 Overlay
  Dim Ntp_b8_ref_clock_update_time(8) As Xram Byte At Eth_buffer + 16 Overlay
  Dim Ntp_b8_originate_timestamp(8) As Xram Byte At Eth_buffer + 24 Overlay
  Dim Ntp_b8_receive_timestamp(8) As Xram Byte At Eth_buffer + 32 Overlay
  Dim Ntp_b8_transmit_timestamp(8) As Xram Byte At Eth_buffer + 40 Overlay
#else
  Dim Ntp_b_peer_clock_stratum As Byte At Eth_buffer + 1 Overlay
  Dim Ntp_b_peer_polling_interval As Byte At Eth_buffer + 2 Overlay
  Dim Ntp_b_peer_clock_precision As Byte At Eth_buffer + 3 Overlay
  Dim Ntp_l_root_delay As Long At Eth_buffer + 4 Overlay
  Dim Ntp_l_root_dispersion As Long At Eth_buffer + 8 Overlay
  Dim Ntp_b4_ref_clock_id(4) As Byte At Eth_buffer + 12 Overlay
  Dim Ntp_b8_ref_clock_update_time(8) As Byte At Eth_buffer + 16 Overlay
  Dim Ntp_b8_originate_timestamp(8) As Byte At Eth_buffer + 24 Overlay
  Dim Ntp_b8_receive_timestamp(8) As Byte At Eth_buffer + 32 Overlay
  Dim Ntp_b8_transmit_timestamp(8) As  Byte At Eth_buffer + 40 Overlay
#endif

'******************************************************************************
' NTP Constants and variables
'******************************************************************************
Const Ntp_offset_to_bascom = 1139293696
Const Ntp_one_hour_offset = 3600
Const Ntp_flags_leap_indicator = 1
Const Ntp_flags_version = 3
Const Ntp_flags_mode = 3
Const Ntp_flags_server_gw = 42

Dim Ntp_on As Byte
Dim Ntp_stat_on As Byte
Dim Ntp_request_time As Dword
Ntp_request_time = 0


declare Sub Check_time( Byval Socket As Byte , Dns_server As Dword, Byref Buffer() As Byte)
'-------------------------------------------------------------------------------
' Udp_ntp get time from received packet
'-------------------------------------------------------------------------------
Declare Sub Ntp_parse()
'-------------------------------------------------------------------------------
' Ntp_dst_correction correct date
'-------------------------------------------------------------------------------
Declare Sub Ntp_dst_correction
'-------------------------------------------------------------------------------
' Start An Ntp Request
'-------------------------------------------------------------------------------
Declare Sub Ntp_request( Byval Socket As Byte , Dns_server As Dword, Byref Buffer() As Byte)



Goto Ntp_end

'*******************************************************************************
'* NTP Procedures and Functions
'*******************************************************************************

' RFC 1305 NTP

Sub Check_time( Byval Socket As Byte , Dns_server As Dword, Byref Buffer() As Byte)
    If Ntp_request_time <= Local_time Then
       Ntp_request_time = Local_time + 3
       Call Ntp_request(socket , Dns_server , Buffer(1))
    End If
End Sub


'-------------------------------------------------------------------------------
' Udp_ntp get time from received packet
'-------------------------------------------------------------------------------
Sub Ntp_parse()
   Local_time = Ntp_b8_receive_timestamp(1)
   Shift Local_time , Left , 8
   Local_time = Local_time + Ntp_b8_receive_timestamp(2)
   Shift Local_time , Left , 8
   Local_time = Local_time + Ntp_b8_receive_timestamp(3)
   Shift Local_time , Left , 8
   Local_time = Local_time + Ntp_b8_receive_timestamp(4)

   Local_time = Local_time + Ntp_offset_to_bascom
   Local_time = Local_time + Ntp_one_hour_offset                ' offset UTC + 1 hour
   Call Ntp_dst_correction
   'Update Time every hour
   Ntp_request_time = Local_time + 3600
End Sub


'-------------------------------------------------------------------------------
' Ntp_dst_correction correct date
'-------------------------------------------------------------------------------
Sub Ntp_dst_correction
   Local Second As Byte
   Local Minute As Byte
   Local Hour As Byte
   Local Day As Byte
   Local Month As Byte
   Local Year As Byte
   Local Dow As Byte

   Day = Date(local_time)
   Month = 4
   Day = 1
   Hour = 2
   Minute = 0
   Second = 0
   Dow = Dayofweek(day)
   Day = 31 - Dow
   Month = 3
   If Local_time >= Syssec(second) Then
       Day = 1
       Month = 11
       Dow = Dayofweek(day)
       Day = 31 - Dow
       Month = 10
       If Local_time < Syssec(second) Then
          Local_time = Local_time + Ntp_one_hour_offset
       End If
   End If

End Sub

'-------------------------------------------------------------------------------
' Start An Ntp Request
'-------------------------------------------------------------------------------
Sub Ntp_request( Byval Socket As Byte , Dns_server As Dword, Byref Buffer() As Byte)
   Local Xx As Byte
   Local Ntp_timeout As Word
   Local Result As Byte
   Local Rx_size As Word

   For Xx = 1 To 48
     Buffer(xx) = &H00
   Next

'(
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      +    Byte 1     +    Byte 2     +    Byte 3     +    Byte 4     +
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |               |    1          |        2      |            3  |
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1     |LI | VN  |Mode |    Stratum    |     Poll      |   Precision   |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
2     |                          Root Delay                           |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
3     |                       Root Dispersion                         |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
4     |                    Reference Identifier                       |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
5     |                    Reference Timestamp (64)                   |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
6     |                    Reference Timestamp                        |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
7     |                    Originate Timestamp (64)                   |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
8     |                    Originate Timestamp                        |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
9     |                     Receive Timestamp  (64)                   |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
10    |                     Receive Timestamp                         |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
11    |                    Transmit Timestamp  (64)                   |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
12    |                    Transmit Timestamp                         |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

      11011001
      LI        2 bit  01   +1 second (following minute has 61 seconds)
      VN        3 bit  110  Version 3
      mode      3 bit  110  Client 3
')

'NTP Frame
   'LI, VN, MODE
    Buffer(1) = Ntp_flags_mode : Shift Buffer(1) , Left , 3
    Buffer(1) = Buffer(1) Or Ntp_flags_version : Shift Buffer(1) , Left , 3
    Buffer(1) = Buffer(1) Or Ntp_flags_leap_indicator
   'stratum  Buffer(2)
   'poll     Buffer(3)
   'Precision Buffer(4)
    Buffer(4) = &H01

   'Root Delay            Buffer(5) - Buffer(Cool
   'Root Dispersion       Buffer(9) - Buffer(12)
   'Reference Identifier  Buffer(13) - Buffer(16)
   'Reference Timestamp   Buffer(17) - Buffer(24)
   'Originate Timestamp   Buffer(25) - Buffer(32)
   'Receive Timestamp     Buffer(33) - Buffer(40)
   'Transmit Timestamp    Buffer(41) - Buffer(4Cool


      Socket = Getsocket(socket , Sock_dgram , Udp_port_ntp_src , 0)
      If socket = 255 Then
         ' "NTP Socket open failed"
      Else
        Peersize = 48
        Result = Udpwrite(dns_server , Udp_port_ntp_dst , socket , Buffer(1) , Peersize)

        Ntp_timeout = 0
        Do
          Incr Ntp_timeout
          Rx_size = Socketstat(socket , Sel_recv)           ' get number of bytes waiting

          If Rx_size > 0 Then
            Udpreadheader socket
            Result = Udpread(socket , Buffer(1) , Peersize)
            Call Ntp_parse()
            Ntp_timeout = &HFFFF
          End If
          Waitms 1
          Reset Watchdog
        Loop Until Ntp_timeout > 2000
      End If
      Closesocket socket
End Sub


Ntp_end:
 

_________________
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Last edited by six1 on Fri Dec 07, 2012 7:11 pm; edited 1 time in total
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six1

Bascom Expert



Joined: 27 Feb 2009
Posts: 515

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PostPosted: Fri Dec 07, 2012 7:11 pm    Post subject: Reply with quote

DHCP


Code:


    Use_xram = 0

   #if Use_xram = 1
     Dim Eth_buffer(300) As xram Byte
   #else
     Dim Eth_buffer(300) As Byte
   #endif

    Dim Eth_mac(6) As Byte
    Dim Eth_ip(4) As Byte
    Dim Eth_mask(4) As Byte
    Dim Eth_gateway(4) As Byte
    Dim Eth_ip_ntp(4) As Byte
    Dim Eth_ip_dhcp(4) As Byte
    Dim Eth_ip_dns(4) As Byte

    Dim Eth_hostname As String * 12
    Eth_hostname = "SIX1"

    Dim Ip_ As long
    Dim Subnetmask_ As Long
    Dim Gateway_ As Long
    Dim Ip_ntp_ As Long
    Dim Ip_dhcp_ As Long
    Dim Ip_dns_ As long
    Dim IP_Dns_server_ As Long

    Ip_ = Maketcp(192 , 168 , 1 , 2)
    Subnetmask_ = Maketcp(255 , 255 , 255 , 0 )
    Gateway_ = Maketcp(192 , 168 , 1 , 254)
    Eth_mac(1) = 0 : Eth_mac(2) = 8 : Eth_mac(3) = &HDC : Eth_mac(4) = &H17 : Eth_mac(5) = &H01 : Eth_mac(6) = &H02
    IP_Dns_server_ = Maketcp(192 , 168 , 1 , 254)
    Ip_ntp_ = Maketcp(64.90.182.55 )

'-------------------------------------------------------------------------------
' DHCP
'-------------------------------------------------------------------------------
   Print #1 , "TEST DHCP"
   Print #1 , "IP now: 192.168.1.5"

   Dim Dhcp_ip As Dword
   Dim Sock_dhcp As Byte

   Dhcp_ip = Maketcp(64.90.182.55 )
   Sock_dhcp = Get_free_socket()

   const Debug_dhcp = 2
   $include "Classes\ETH_DHCP.inc"

   Call Check_dhcp(Sock_dhcp, eth_buffer(1))
 



save this as "ETH_DHCP.inc"

Code:

'*******************************************************************************
'
'  Copyright Michael Koecher aka six1 8/2010
'  basedon Code from Framuel/BascomForum.de
'  -> http://www.six1.net/   michael@koecher-web.de
'
'   http://creativecommons.org/licenses/by-sa/3.0/de/
'
'   Sie dürfen:
'
'     * das Werk bzw. den Inhalt vervielfältigen, verbreiten und öffentlich zugänglich machen
'
'     * Abwandlungen und Bearbeitungen des Werkes bzw. Inhaltes anfertigen
'
'   Zu Den Folgenden Bedingungen:
'
'     * Namensnennung.
'       Sie müssen den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen.
'
'     * Keine kommerzielle Nutzung.
'       Dieses Werk darf nicht für kommerzielle Zwecke verwendet werden.
'
'     * Weitergabe unter gleichen Bedingungen.
'       Wenn Sie das lizenzierte Werk bzw. den lizenzierten Inhalt bearbeiten
'       oder in anderer Weise erkennbar als Grundlage für eigenes Schaffen verwenden,
'       dürfen Sie die daraufhin neu entstandenen Werke bzw. Inhalte nur
'       unter Verwendung von Lizenzbedingungen weitergeben, die mit denen
'       dieses Lizenzvertrages identisch oder vergleichbar sind.
'
'   Wobei gilt:
'
'     * Verzichtserklärung
'       Jede der vorgenannten Bedingungen kann aufgehoben werden, sofern Sie
'       die ausdrückliche Einwilligung des Rechteinhabers dazu erhalten.
'
'     * Sonstige Rechte
'       Die Lizenz hat keinerlei Einfluss auf die folgenden Rechte:
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'            bezüglich seiner Verwendung, zum Beispiel Persönlichkeitsrechte abgebildeter Personen.
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'  Hinweis
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'      Im Falle einer Verbreitung müssen Sie anderen alle Lizenzbedingungen
'      mitteilen, die für dieses Werk gelten. Am einfachsten ist es,
'      einen Link auf http://creativecommons.org/licenses/by-sa/3.0/de/ einzubinden.
'

'*******************************************************************************
$nocompile




'*******************************************************************************
'* PUBLIC DECLARATIONS
'*******************************************************************************
  Declare Sub Check_dhcp(byref Socket As Byte , Byref Eth_buffer() As Byte)




Const Udp_port_dhcp_remote = 67                                                 'reversed &H43 (67)
Const Udp_port_dhcp_local = 68                                                  'reversed &H44 (6Cool

'******************************************************************************
' DHCP Constants and variables
'******************************************************************************
Const Dhcp_status_init = 0
Const Dhcp_status_rebinding = 1
Const Dhcp_status_renewing = 2
Const Dhcp_status_bound = 3
Const Dhcp_op_bootrequest = 1
Const Dhcp_op_bootreply = 2
Const Dhcp_cookie = &H63538263                                                  '0x63825363  reversed 99.130.83.99
Const Dhcp_msg_type_dhcpdiscover = 1
Const Dhcp_msg_type_dhcpoffer = 2
Const Dhcp_msg_type_dhcprequest = 3
Const Dhcp_msg_type_dhcpdecline = 4
Const Dhcp_msg_type_dhcpack = 5
Const Dhcp_msg_type_dhcpnak = 6
Const Dhcp_msg_type_dhcprelease = 7
Const Dhcp_msg_type_dhcpinform = 8
Const Dhcp_opt_message_type = 53
Const Dhcp_opt_parameter_request_list = 55
Const Dhcp_opt_requested_ip_address = 50
Const Dhcp_opt_server_identifier = 54
Const Dhcp_opt_client_identifier = 61
Const Dhcp_opt_client_identifier_mac = 1
Const Dhcp_hwtype_eth10mb = 1
Const Dhcp_options_start = 283 - 42
Const Dhcp_flags_broadcast = &H0080                                             'reversed 8000          '
Const Dhcp_flags_no_broadcast = &H0000                                          'reversed 0000

Const Dhcp_opt_subnetmask = 1
Const Dhcp_opt_routersonsubnet = 3
Const Dhcp_opt_ntp_server = 42
Const Dhcp_opt_nameserver = 5
Const Dhcp_opt_dns = 6
Const Dhcp_opt_domainname = 15
Const Dhcp_opt_broadcast_address = 28
Const Dhcp_opt_performrouterdiscovery = 31
Const Dhcp_opt_staticroute = 33
Const Dhcp_opt_hostname = 12
Const Dhcp_opt_leasetime = 51
Const Dhcp_opt_renewal = 58
Const Dhcp_opt_rebinding = 59

Const Dhcp_endoption = &HFF

dim Dhcp_on as byte
Dim Ee_dhcp_on As Eram Byte
Dim Dhcp_transaction_id As Long
Dim Dhcp_status As Byte
Dim Dhcp_secs_elapsed As Word
Dim Dhcp_lease_time As Long
Dim Dhcp_renew_time As Long
Dim Dhcp_rebinding_time As Long
Dim Dhcp_b_recent_server_ip(4) As Byte
Dim Dhcp_request_time As Dword
Dhcp_request_time = 0

'******************************************************************************
' DHCP Frame
'******************************************************************************


#if Use_xram = 1
Dim Dhcp_b_opcode As Xram Byte At Eth_buffer(1) Overlay
Dim Dhcp_b_hwtype As Xram Byte At Eth_buffer(2) Overlay
Dim Dhcp_b_hwlen As Xram Byte At Eth_buffer + 2 Overlay
Dim Dhcp_b_hops As Xram Byte At Eth_buffer + 3 Overlay
Dim Dhcp_l_transaction_id As Xram Long At Eth_buffer + 4 Overlay
Dim Dhcp_w_secs As Xram Word At Eth_buffer + 8 Overlay
Dim Dhcp_w_flags As Xram Word At Eth_buffer + 10 Overlay
Dim Dhcp_b_ciaddr(4) As Xram Byte At Eth_buffer + 12 Overlay
Dim Dhcp_b_yiaddr(4) As Xram Byte At Eth_buffer + 16 Overlay
Dim Dhcp_b_siaddr(4) As Xram Byte At Eth_buffer + 20 Overlay
Dim Dhcp_b_giaddr(4) As Xram Byte At Eth_buffer + 24 Overlay
Dim Dhcp_b_chaddr(16) As Xram Byte At Eth_buffer + 28 Overlay
Dim Dhcp_b_sname(64) As Xram Byte At Eth_buffer + 44 Overlay
Dim Dhcp_b_file(128) As Xram Byte At Eth_buffer + 108 Overlay
Dim Dhcp_l_dhcp_cookie As Xram Long At Eth_buffer + 236 Overlay
Dim Dhcp_b_options_start As Xram Byte At Eth_buffer(dhcp_options_start) Overlay
#else
Dim Dhcp_b_opcode As Byte At Eth_buffer(1) Overlay
Dim Dhcp_b_hwtype As Byte At Eth_buffer(2) Overlay
Dim Dhcp_b_hwlen As Byte At Eth_buffer + 2 Overlay
Dim Dhcp_b_hops As Byte At Eth_buffer + 3 Overlay
Dim Dhcp_l_transaction_id As Long At Eth_buffer + 4 Overlay
Dim Dhcp_w_secs As Word At Eth_buffer + 8 Overlay
Dim Dhcp_w_flags As Word At Eth_buffer + 10 Overlay
Dim Dhcp_b_ciaddr(4) As Byte At Eth_buffer + 12 Overlay
Dim Dhcp_b_yiaddr(4) As Byte At Eth_buffer + 16 Overlay
Dim Dhcp_b_siaddr(4) As Byte At Eth_buffer + 20 Overlay
Dim Dhcp_b_giaddr(4) As Byte At Eth_buffer + 24 Overlay
Dim Dhcp_b_chaddr(16) As Byte At Eth_buffer + 28 Overlay
Dim Dhcp_b_sname(64) As Byte At Eth_buffer + 44 Overlay
Dim Dhcp_b_file(128) As Byte At Eth_buffer + 108 Overlay
Dim Dhcp_l_dhcp_cookie As Long At Eth_buffer + 236 Overlay
Dim Dhcp_b_options_start As  Byte At Eth_buffer(dhcp_options_start) Overlay
#endif

Dim Dhcp_b_offer_ip(4) As Byte
Dim Dhcp_b_dhcp_ip(4) As Byte


Dhcp_on = Ee_dhcp_on




'*******************************************************************************
'* PRIVATE DECLARATIONS
'*******************************************************************************


  Declare Sub Dhcp_initialize(byref Socket As Byte,byref eth_buffer() as byte)
'-------------------------------------------------------------------------------
' Aufruf aus dem Hauptprogramm
'   Der Dhcp Status Wird Auf Init Gestellt Und Ein Dhcp Discover Paket Gesendet.
'-------------------------------------------------------------------------------
  Declare Sub Dhcp_every_minute(byref Socket as byte,byref eth_buffer() as byte)
'-------------------------------------------------------------------------------
' Aufruf aus dem Hauptprogramm
'   Diese Routine Sollte Aus Dem Hauptprogramm Heraus Etwa 1 X Pro Minute Aufgerufen Werden.
'   Es Werden Die Timer Für Rebind , Renew Und Lease Heruntergezählt,
'   Bei Erreichen Der Null Erfolgt Eine Entsprechende Änderung Des Dhcp Status.
'   Anschließend Wird Je Nach Dann Gültigen Status Eine Entsprechede Aktion Ausgelöst:
'   Status Bound - > Keine Aktion
'   Status Init - > Dhcp Discover
'   Status Renew Oder Rebind - > Dhcp Request
'-------------------------------------------------------------------------------
  Declare Sub Dhcp_create_new_xid
'-------------------------------------------------------------------------------
'   Es Wird Ein Dhcp Discover Paket Aufgebaut Und Verschickt.
'-------------------------------------------------------------------------------
  Declare Sub Dhcp_packet_filter(byref Socket As Byte,byref eth_buffer() as byte)
'-------------------------------------------------------------------------------
' Aufruf aus: Udp_packet_filter
'   Das Empfangene Paket Wird Geprüft:
'   Wenn Es Nicht An Die Eigene Ip Adresse Ging , Wird Es Abgewiesen
'   Wenn Es Nicht Von Unserem Dns -server Kam , Wird Es Abgewiesen
'   Ansonsten Wird Dns_reply_received Aufgerufen
'-------------------------------------------------------------------------------
  Declare Function Dhcp_find_option(byval Opt As Byte) As Word
'-------------------------------------------------------------------------------
' Aufruf z.B. aus: Udp_packet_filter
'   Diese Funktion Durchsucht Den Gesamten Optionen -bereich Nach Einer Bestimmten Option
'   (s.a. Dhcp_parse_options)
'-------------------------------------------------------------------------------
  Declare Sub Dhcp_send_discover(byref Socket As Byte , Byref Eth_buffer() As Byte)
'-------------------------------------------------------------------------------
'   Es Wird Ein Dhcp Discover Paket Aufgebaut Und Verschickt.
'-------------------------------------------------------------------------------
  Declare Sub Dhcp_send_request(byref Socket As Byte , Byref Eth_buffer() As Byte)
'-------------------------------------------------------------------------------
'   Es Wird Ein Dhcp Request Paket Aufgebaut Und Verschickt.
'   Im Dhcp Status Renew Wird Das Paket Direkt An Den Letzten Dhcp Server Geschickt,
'   Im Dhcp Status Rebind Wird Das Paket Per Broadcast Gesendet.
'-------------------------------------------------------------------------------
  Declare Sub Dhcp_received_ack(byref Socket As Byte , Byref Eth_buffer() As Byte)
'-------------------------------------------------------------------------------
'   Wenn Der Dhcp Request Vom Server Bestätigt Wird , Wird Der Dhcp Status Auf Bound Gesetzt.
'   Die Empfangenen Parameter Werden über Die Options Ausgelesen Und Die Einsprechenden Werte Gesetzt.
'-------------------------------------------------------------------------------
  Declare Sub Dhcp_parse_options(byref eth_buffer() as byte)
' Aufruf aus: Dhcp_received_ack
'   Die Meisten Der Für Dhcp Wichtigen Informationen Finden Sich Nicht An Festen Stellen Im Frame
'   (der Eigentlich Ein Bootp Frame Ist) , Sondern In Dem Eigentlich Für Option Vorgesehenen Bereich.
'   Eine Option Beginnt Immer Mit Einem Kennungs -byte , Gefolgt Von 2 Längenbytes , Dann Erst Die Eigentlichen Daten.
'   Diese Funktion Durchläuft Den Gesamten Optionen -bereich Und Wertet Die Jeweiligen Daten Aus.
'-------------------------------------------------------------------------------
  Declare Sub Dhcp_received_nak
'-------------------------------------------------------------------------------
'   Wenn Der Dhcp Request Vom Server Abgelehnt Wird , Wird Der Dhcp Status Auf Init Zurückgesetzt.
'-------------------------------------------------------------------------------


goto DHCP_END



'*******************************************************************************
'* DHCP Procedures and Functions
'*******************************************************************************


Sub Check_dhcp(byref Socket As Byte , Byref Eth_buffer() As Byte)
  If Dhcp_on > 0 Then
     If Dhcp_request_time <= local_time Then
         Dhcp_request_time = Local_time + 5
         Call Dhcp_every_minute(Socket, eth_buffer(1))
     End If
  End If
End Sub

'-------------------------------------------------------------------------------
'  DHCP-packet filter
'-------------------------------------------------------------------------------
Sub Dhcp_packet_filter(byref Socket As Byte , Byref Eth_buffer() As Byte)
Local Lw As Word
   If Dhcp_status = Dhcp_status_bound Then
      Exit Sub                                              'Don't accept packets anymore
   End If
   If Dhcp_b_opcode = Dhcp_op_bootreply Then
     If Dhcp_l_transaction_id = Dhcp_transaction_id Then
        Lw = Dhcp_find_option(53)
        If Lw = 0 Then Exit Sub
        Select Case Eth_buffer(lw + 2)
           Case Dhcp_msg_type_dhcpoffer
              Call Dhcp_send_request(socket , Eth_buffer(1))
           Case Dhcp_msg_type_dhcpack
              Call Dhcp_received_ack(socket , Eth_buffer(1))
           Case Dhcp_msg_type_dhcpnak
              Call Dhcp_received_nak
           Case Else
              #if Debug_dhcp > 0
                  Print #1 , "DHCP other packet received from IP "
              #endif
        End Select
     End If
  End If
End Sub

'-------------------------------------------------------------------------------
'  DHCP Initialization
'-------------------------------------------------------------------------------
Sub Dhcp_initialize(byref Socket As Byte , Byref Eth_buffer() As Byte)
   Dhcp_status = Dhcp_status_init
   #if Debug_dhcp > 1
      Print #1 , "DHCP Status set to INIT"
   #endif
   Call Dhcp_send_discover(Socket, eth_buffer(1))
End Sub

'-------------------------------------------------------------------------------
'  DHCP Every Minute
'-------------------------------------------------------------------------------
Sub Dhcp_every_minute(byref Socket As Byte , Byref Eth_buffer() As Byte)
   Select Case Dhcp_renew_time                                                  'T1
'      Case &HFFFFFFFF                                                           'infinite
      Case Is > 0:
         Dhcp_renew_time = Dhcp_renew_time - 60                                 '-60 secs
         If Dhcp_renew_time <= 0 Then
            Dhcp_status = Dhcp_status_renewing
            #if Debug_dhcp > 1
                Print #1 , "  DHCP Status changed to RENEWING"
            #endif
         End If
'      Case Else
   End Select
   Select Case Dhcp_rebinding_time                                              'T2
'      Case &HFFFFFFFF                                                           'infinite
      Case Is > 0:
         Dhcp_rebinding_time = Dhcp_rebinding_time - 60                         '-60 sec
         If Dhcp_rebinding_time <= 0 Then
            Dhcp_status = Dhcp_status_rebinding
            #if Debug_dhcp > 1
                Print #1 , "  DHCP Status changed to REBINDING"
            #endif
         End If
'      Case Else
   End Select
   Select Case Dhcp_lease_time
'      Case &HFFFFFFFF                                                           'infinite
      Case Is > 0:
         Dhcp_lease_time = Dhcp_lease_time - 60             '-60 sec
         If Dhcp_lease_time <= 0 Then
 '           Call Eth_hardware_init()                                                       'reset to static network
            Dhcp_status = Dhcp_status_init
            #if Debug_dhcp > 1
                Print #1 , "  DHCP Status changed to INIT"
            #endif
         End If
'      Case Else
   End Select
   Dhcp_secs_elapsed = Dhcp_secs_elapsed + 60

   #if Debug_dhcp > 1
      Print
      Select Case Dhcp_status
         Case Dhcp_status_init
             Print #1 , "DHCP Status = INIT"
         Case Dhcp_status_renewing
             Print #1 , "DHCP Status = RENEWING"
         Case Dhcp_status_rebinding
             Print #1 , "DHCP Status = REBINDING"
         Case Dhcp_status_bound
             Print #1 , "DHCP Status = BOUND"
      End Select
       Print #1 , " Renew  Tmr = " ; Dhcp_renew_time
       Print #1 , " Rebind Tmr = " ; Dhcp_rebinding_time
       Print #1 , " Lease  Tmr = " ; Dhcp_lease_time
       Print #1 , "SecsElapsed = " ; Dhcp_secs_elapsed
   #endif

   Select Case Dhcp_status
      Case Dhcp_status_bound
         Dhcp_request_time = local_time + 60
         Exit Sub
      Case Dhcp_status_init
         Call Dhcp_send_discover(socket , Eth_buffer(1))
         Dhcp_request_time = Local_time + 5
      Case Else
         Call Dhcp_send_request(socket , Eth_buffer(1))
         Dhcp_request_time = Local_time + 5
   End Select
End Sub

'-------------------------------------------------------------------------------
'  DHCP send Discover
'-------------------------------------------------------------------------------
Sub Dhcp_send_discover(byref Socket As Byte , Byref Eth_buffer() As Byte)
   Local Lw As Word , L1 As Word , L2 As Word , B_b As Byte
   Local Ls As String * 1
   Local Li As Integer
   Local I As Integer , Row As String * 55 , Rownr As Word
   Local Dhcp_timeout As Word
   Local Dest_ip As Long , Result As Byte , Rx_size As Word

   Dhcp_b_opcode = Dhcp_op_bootrequest
   Dhcp_b_hwtype = Dhcp_hwtype_eth10mb
   Dhcp_b_hwlen = 6
   Dhcp_b_hops = 0

  Call Dhcp_create_new_xid()

   Dhcp_l_transaction_id = Dhcp_transaction_id
   Dhcp_w_flags = Dhcp_flags_broadcast

'###############################################################################
   Dhcp_b_ciaddr(1) = 0                                                         'Set all addresses to zero
   Dhcp_b_ciaddr(2) = 0
   Dhcp_b_ciaddr(3) = 0
   Dhcp_b_ciaddr(4) = 0

   Dhcp_b_yiaddr(1) = 0
   Dhcp_b_yiaddr(2) = 0
   Dhcp_b_yiaddr(3) = 0
   Dhcp_b_yiaddr(4) = 0

   Dhcp_b_siaddr(1) = 0
   Dhcp_b_siaddr(2) = 0
   Dhcp_b_siaddr(3) = 0
   Dhcp_b_siaddr(4) = 0

   Dhcp_b_offer_ip(1) = Dhcp_b_yiaddr(1)
   Dhcp_b_offer_ip(2) = Dhcp_b_yiaddr(2)
   Dhcp_b_offer_ip(3) = Dhcp_b_yiaddr(3)
   Dhcp_b_offer_ip(4) = Dhcp_b_yiaddr(4)

   Dhcp_b_dhcp_ip(1) = Dhcp_b_siaddr(1)
   Dhcp_b_dhcp_ip(2) = Dhcp_b_siaddr(2)
   Dhcp_b_dhcp_ip(3) = Dhcp_b_siaddr(3)
   Dhcp_b_dhcp_ip(4) = Dhcp_b_siaddr(4)

   For I = 1 To 4
     Dhcp_b_giaddr(i) = 0
   Next
   For I = 1 To 16
     Dhcp_b_chaddr(i) = 0
   Next
   For I = 1 To 64
     Dhcp_b_sname(i) = 0
   Next
   For I = 1 To 128
     Dhcp_b_file(i) = 0
   Next

'###############################################################################

   Dhcp_b_chaddr(1) = Eth_mac(1)
   Dhcp_b_chaddr(2) = Eth_mac(2)
   Dhcp_b_chaddr(3) = Eth_mac(3)
   Dhcp_b_chaddr(4) = Eth_mac(4)
   Dhcp_b_chaddr(5) = Eth_mac(5)
   Dhcp_b_chaddr(6) = Eth_mac(6)
   Dhcp_l_dhcp_cookie = Dhcp_cookie

'###############################################################################
'W5200 creates Header Ethernet-, IP-, UDP- and Parts of the BootStrap-Protokoll (0x0000-0119 / #000-281)
'incl. the Magic Cookie

'Start building the BootStrap-Option of the DHCP-Frame                          (0x011A-024D / #282-590)
   Lw = Dhcp_options_start                                                      'Start ByteCounting (0x011A      / #282

'1´st Option - DISCOVER-Request
   Eth_buffer(lw) = Dhcp_opt_message_type                                         'Option  53
   Incr Lw : Eth_buffer(lw) = 1                                                   'Length
   Incr Lw : Eth_buffer(lw) = Dhcp_msg_type_dhcpdiscover                          'Dhcp_request

'2´nd Option - Client Identifier
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_client_identifier                          'Option 61
   Incr Lw : Eth_buffer(lw) = 7                                                   'Length
   Incr Lw : Eth_buffer(lw) = 1                                                   'HardwareType
   Incr Lw : Eth_buffer(lw) = Eth_mac(1)
   Incr Lw : Eth_buffer(lw) = Eth_mac(2)
   Incr Lw : Eth_buffer(lw) = Eth_mac(3)
   Incr Lw : Eth_buffer(lw) = Eth_mac(4)
   Incr Lw : Eth_buffer(lw) = Eth_mac(5)
   Incr Lw : Eth_buffer(lw) = Eth_mac(6)

'3´rd Option - Host Name
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_hostname                                   'Option 12
   Incr Lw : Eth_buffer(lw) = Len(eth_hostname)             'Length
   For Li = 1 To Len(eth_hostname)                          'Hostname
      Ls = Mid(eth_hostname , Li , 1)
      Incr Lw : Eth_buffer(lw) = Asc(ls)
   Next Li

'4´th Option - Parameter Request List
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_parameter_request_list                     'Option 55
   Incr Lw : Eth_buffer(lw) = 7                                                   'Size of Options
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_subnetmask
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_routersonsubnet
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_dns
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_domainname
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_renewal
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_rebinding
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_ntp_server

'DHCP Options END'
   Incr Lw : Eth_buffer(lw) = &HFF                                                'end

'Padding up to 548 Bytes BootStartSize
   Incr Lw
   For I = Lw To 547                                                            '590-43
     Incr Lw : Eth_buffer(lw) = 0
   Next


'###############################################################################
#if Debug_dhcp > 2

  Print #1 , "DHCP - Send DISCOVER (Bootstrap Protocol)"
  Print #1 , "DHCP - Bootstrap Size = " ; Lw
  Print #1 , "_____________________________________________________"
  Print #1 , "0x   00 01 02 03 04 05 06 07  08 09 0A 0B 0C 0D 0E 0F"
  Print #1 , "====================================================="
  Row = "0020 -- -- -- -- -- -- -- --  -- --"
  Rownr = 32
  For I = 1 To Lw
    Row = Row + " " + + Hex(Eth_buffer(i))
    If Len(row) = 28 Then
      Row = Row + " "
    End If
    If Len(row) >= 52 Then
      Print #1 , Row
      Rownr = Rownr + 16
      Row = Hex(rownr)
    End If
  Next
  Print #1 , Row                                                                'the rest

  Print #1 , "_____________________________________________________"

#endif
'###############################################################################



      Dest_ip = Maketcp(255.255.255.255)                                     ' Broadcast

      Socket = Getsocket(socket , Sock_dgram , Udp_port_dhcp_local , 0)       ' get socket for client mode, specify port 0 so loal_port is used
      If Socket = 255 Then
          Print #1 , "DHCP Socket open failed"
      Else
        Peersize = Lw
        Result = Udpwrite(dest_ip , Udp_port_dhcp_remote , Socket , Eth_buffer(1) , Peersize)


        Dhcp_timeout = 0
        Do
          Incr Dhcp_timeout
          Rx_size = Socketstat(socket , Sel_recv)           ' get number of bytes waiting

          If Rx_size > 0 Then
            Udpreadheader Socket
            Result = Udpread(socket , Eth_buffer(1) , Peersize)
            Closesocket Socket
            Call Dhcp_packet_filter(Socket, eth_buffer(1))
            Dhcp_timeout = &HFFFF
          End If
          Waitms 1
          Reset Watchdog
        Loop Until Dhcp_timeout > 2500
        If Dhcp_timeout < &HFFFF Then
          '  Print #1 , "Timeout DHCP"
        End If
      End If
      Closesocket Socket

End Sub




'-------------------------------------------------------------------------------
'  DHCP send Request
'-------------------------------------------------------------------------------
Sub Dhcp_send_request(byref Socket As Byte , Byref Eth_buffer() As Byte)
   Local Lw As Word , L1 As Word , L2 As Word, b_b as byte
   Local Li As Integer
   Local Ls As String * 1
   Local I As Integer
   Local Opt_pos As Word
   Local Dest_ip As Long , Result As Byte , Rx_size As Word , Dhcp_timeout As Word

   Dhcp_b_offer_ip(1) = Dhcp_b_yiaddr(1)
   Dhcp_b_offer_ip(2) = Dhcp_b_yiaddr(2)
   Dhcp_b_offer_ip(3) = Dhcp_b_yiaddr(3)
   Dhcp_b_offer_ip(4) = Dhcp_b_yiaddr(4)

   If Dhcp_b_siaddr(1) > 0 Then
      Dhcp_b_dhcp_ip(1) = Dhcp_b_siaddr(1)
      Dhcp_b_dhcp_ip(2) = Dhcp_b_siaddr(2)
      Dhcp_b_dhcp_ip(3) = Dhcp_b_siaddr(3)
      Dhcp_b_dhcp_ip(4) = Dhcp_b_siaddr(4)
   Else
      Opt_pos = Dhcp_find_option(dhcp_opt_server_identifier)
      If Opt_pos > 0 Then
        Dhcp_b_dhcp_ip(1) = Eth_buffer(opt_pos + 2)
        Dhcp_b_dhcp_ip(2) = Eth_buffer(opt_pos + 3)
        Dhcp_b_dhcp_ip(3) = Eth_buffer(opt_pos + 4)
        Dhcp_b_dhcp_ip(4) = Eth_buffer(opt_pos + 5)
      Else
        ' didn't know, where to get adress from....
      End If
   End If

'###############################################################################
   Dhcp_b_yiaddr(1) = 0                                                         ' Set your Client IP to zero again
   Dhcp_b_yiaddr(2) = 0
   Dhcp_b_yiaddr(3) = 0
   Dhcp_b_yiaddr(4) = 0

   Dhcp_b_siaddr(1) = 0                                                         ' Set next server IP to zero again
   Dhcp_b_siaddr(2) = 0
   Dhcp_b_siaddr(3) = 0
   Dhcp_b_siaddr(4) = 0
'###############################################################################


   Dhcp_b_opcode = Dhcp_op_bootrequest
   Dhcp_b_hwtype = Dhcp_hwtype_eth10mb
   Dhcp_b_hwlen = 6
   Dhcp_b_hops = 0
   Dhcp_l_transaction_id = Dhcp_transaction_id

   If Dhcp_status < Dhcp_status_renewing Then
      Dhcp_w_flags = Dhcp_flags_broadcast
   Else
      Dhcp_w_flags = 0
      Dhcp_b_ciaddr(1) = Eth_ip(1)
      Dhcp_b_ciaddr(2) = Eth_ip(2)
      Dhcp_b_ciaddr(3) = Eth_ip(3)
      Dhcp_b_ciaddr(4) = Eth_ip(4)
   End If

   Dhcp_b_chaddr(1) = Eth_mac(1)
   Dhcp_b_chaddr(2) = Eth_mac(2)
   Dhcp_b_chaddr(3) = Eth_mac(3)
   Dhcp_b_chaddr(4) = Eth_mac(4)
   Dhcp_b_chaddr(5) = Eth_mac(5)
   Dhcp_b_chaddr(6) = Eth_mac(6)

   Dhcp_l_dhcp_cookie = Dhcp_cookie

'Options Request Parameter
   Lw = Dhcp_options_start
   Eth_buffer(lw) = Dhcp_opt_message_type                                         'option  53
   Incr Lw : Eth_buffer(lw) = &H01                                                'Length
   Incr Lw : Eth_buffer(lw) = Dhcp_msg_type_dhcprequest                           'Dhcp_request

   Incr Lw : Eth_buffer(lw) = Dhcp_opt_client_identifier

   Incr Lw : Eth_buffer(lw) = &H07                                                'Length
   Incr Lw : Eth_buffer(lw) = &H01                                                'Hardwaretyp = Ethernet

   Incr Lw : Eth_buffer(lw) = Eth_mac(1)
   Incr Lw : Eth_buffer(lw) = ETH_mac(2)
   Incr Lw : Eth_buffer(lw) = ETH_mac(3)
   Incr Lw : Eth_buffer(lw) = ETH_mac(4)
   Incr Lw : Eth_buffer(lw) = ETH_mac(5)
   Incr Lw : Eth_buffer(lw) = ETH_mac(6)

   If Dhcp_status = Dhcp_status_init Then
       Incr Lw : Eth_buffer(lw) = Dhcp_opt_requested_ip_address                   'offered IP, don´t use it until ACK is received
       Incr Lw : Eth_buffer(lw) = &H04
       Incr Lw : Eth_buffer(lw) = Dhcp_b_offer_ip(1)
       Incr Lw : Eth_buffer(lw) = Dhcp_b_offer_ip(2)
       Incr Lw : Eth_buffer(lw) = Dhcp_b_offer_ip(3)
       Incr Lw : Eth_buffer(lw) = Dhcp_b_offer_ip(4)

       Incr Lw : Eth_buffer(lw) = Dhcp_opt_server_identifier
       Incr Lw : Eth_buffer(lw) = &H04
       Incr Lw : Eth_buffer(lw) = Dhcp_b_dhcp_ip(1)
       Incr Lw : Eth_buffer(lw) = Dhcp_b_dhcp_ip(2)
       Incr Lw : Eth_buffer(lw) = Dhcp_b_dhcp_ip(3)
       Incr Lw : Eth_buffer(lw) = Dhcp_b_dhcp_ip(4)
   Else
       Incr Lw : Eth_buffer(lw) = Dhcp_opt_requested_ip_address
       Incr Lw : Eth_buffer(lw) = &H04
       Incr Lw : Eth_buffer(lw) = ETH_ip(1)
       Incr Lw : Eth_buffer(lw) = ETH_ip(2)
       Incr Lw : Eth_buffer(lw) = ETH_ip(3)
       Incr Lw : Eth_buffer(lw) = ETH_ip(4)
   End If

'Hostame
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_hostname                                   'set Hostname
   L2 = Len(eth_hostname)
   Incr Lw : Eth_buffer(lw) = L2                                                  'length of Option
   For Li = 1 To L2
      Ls = Mid(ETH_hostname , Li , 1)
      Incr Lw : Eth_buffer(lw) = Asc(ls)
   Next Li

'Options
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_parameter_request_list                     'request for...
   Incr Lw : L2 = Lw
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_subnetmask             'subnetmask
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_routersonsubnet
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_dns                                        'dns
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_hostname                                   'hostname
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_nameserver                                 'dns
   Incr Lw : Eth_buffer(lw) = Dhcp_opt_ntp_server                                 'ntp server
   L1 = Lw - L2 : Eth_buffer(l2) = L1                                             'Size of Options

   Dhcp_l_transaction_id = Dhcp_transaction_id
   Incr Lw : Eth_buffer(lw) = Dhcp_endoption

'fill up to 548 Bytes BootStarpSize
'   For I = Lw To 548
'     Incr Lw : Eth_buffer(lw) = 0
'   Next

      Dest_ip = Maketcp(255.255.255.255)                                     ' Broadcast


      Socket = Getsocket(socket , Sock_dgram , Udp_port_dhcp_local , 0)       ' get socket for client mode, specify port 0 so loal_port is used
      If Socket = 255 Then
          Print #1 , "DHCP Socket open failed"
      Else
        Peersize = Lw
        Result = Udpwrite(dest_ip , Udp_port_dhcp_remote , Socket , Eth_buffer(1) , Peersize)


        Dhcp_timeout = 0
        Do
          Incr Dhcp_timeout
          Rx_size = Socketstat(socket , Sel_recv)           ' get number of bytes waiting

          If Rx_size > 0 Then
            Udpreadheader Socket
            Result = Udpread(socket , Eth_buffer(1) , Peersize)
            Closesocket Socket
            Call Dhcp_packet_filter(Socket, eth_buffer(1))
            Dhcp_timeout = &HFFFF
          End If
          Waitms 1
          Reset Watchdog
        Loop Until Dhcp_timeout > 2500
        If Dhcp_timeout < &HFFFF Then
           ' Print #1 , "Timeout DHCP"
        End If
      End If
     Closesocket Socket
End Sub


'-------------------------------------------------------------------------------
'  DHCP Acknowledgement received
'-------------------------------------------------------------------------------
Sub Dhcp_received_ack(byref Socket As Byte , Byref Eth_buffer() As Byte)
   #if Debug_dhcp > 0
       Print #1 , "DHCP Ack received from IP "
   #endif


   Call Dhcp_parse_options(eth_buffer(1))
   'set new network params
   'Call Wiz_network_param
   Dhcp_status = Dhcp_status_bound
   Closesocket Socket
   'reset already used transaction id
   Dhcp_transaction_id = 0

   #if Debug_dhcp > 1
       Print #1 , "DHCP Status changed to BOUND"
   #endif


   #if Debug_dhcp = 1
       Print #1 , "DHCP:"
       Print #1 , " IP    " ; Ip2str(ip_)
       Print #1 , " MASK  " ; Ip2str(submask_)
       Print #1 , " GW    " ; Ip2str(gateway_)
       Print #1 , " DNS   " ; Ip2str(eth_dns_)
   #endif
End Sub

'-------------------------------------------------------------------------------
'  DHCP Negative Acknowledgement received
'-------------------------------------------------------------------------------
Sub Dhcp_received_nak
   #if Debug_dhcp > 0
       Print #1 , "DHCP Nak received from IP "
       Print #1 , "DHCP Status set to INIT"
   #endif
   Dhcp_status = Dhcp_status_init
End Sub

'-------------------------------------------------------------------------------
'  DHCP find option
'-------------------------------------------------------------------------------
Function Dhcp_find_option(byval Opt As Byte) As Word
Local Lw As Word
Local Lx As Word
   Lw = Dhcp_options_start
   Do
      Select Case Eth_buffer(lw)
         Case 0                                                                 'Padding
            Incr Lw
         Case Opt
            Dhcp_find_option = Lw
            Exit Sub
         Case &HFF                                                              'End of Options
            Dhcp_find_option = 0
            Exit Sub
         Case Else
            Lx = Eth_buffer(lw + 1)
            Lw = Lw + 2
            Lw = Lw + Lx
      End Select
   Loop
End Function




'-------------------------------------------------------------------------------
'  DHCP parse options
'-------------------------------------------------------------------------------
Sub Dhcp_parse_options(byref eth_buffer() as byte)
    Local Lw As Word
    Local Llen As Word
    Local Lo As Byte
    Local Ntp_temp As Byte


   'received ip lease --> my IP
   'Set Ip adress
   Ip_ = Maketcp(dhcp_b_yiaddr(1) , Dhcp_b_yiaddr(2) , Dhcp_b_yiaddr(3) , Dhcp_b_yiaddr(4))
   Settcp Eth_mac(1).eth_mac(2).eth_mac(3).eth_mac(4).eth_mac(5).eth_mac(6) , _
           Ip_ , _
           Subnetmask_ , _
           Gateway_



   Lw = Dhcp_options_start
   'reset NTP. If DHCP is transmiting a NTP Server, it will be set again
   Ntp_temp = 0
   Do
      Llen = Eth_buffer(lw + 1)
      Lo = Eth_buffer(lw)
      Select Case Eth_buffer(lw)
         Case 0                                                                 'Padding
            Incr Lw
         Case Dhcp_opt_subnetmask                                               'Subnet Mask
            If Llen = 4 Then
               'Set Mask
               Eth_mask(1) = Eth_buffer(lw + 2)
               Eth_mask(2) = Eth_buffer(lw + 3)
               Eth_mask(3) = Eth_buffer(lw + 4)
               Eth_mask(4) = Eth_buffer(lw + 5)
               Subnetmask_ = Maketcp(eth_mask(1) , Eth_mask(2) , Eth_mask(3) , Eth_mask(4) )
               Settcp Eth_mac(1).eth_mac(2).eth_mac(3).eth_mac(4).eth_mac(5).eth_mac(6) , _
                      Ip_ , _
                      Subnetmask_ , _
                      Gateway_
            End If
            #if Debug_dhcp > 1
                Print #1 , "DHCP-Ack: Default Mask now: " ; Eth_mask(1) ; "." ; Eth_mask(2) ; "." ; Eth_mask(3) ; "." ; Eth_mask(4)
            #endif
         Case Dhcp_opt_routersonsubnet                                          'Routers
            If Llen >= 4 Then
               'Set gateway adress
               Eth_gateway(1) = Eth_buffer(lw + 2)
               Eth_gateway(2) = Eth_buffer(lw + 3)
               Eth_gateway(3) = Eth_buffer(lw + 4)
               Eth_gateway(4) = Eth_buffer(lw + 5)
               Gateway_ = Maketcp(eth_gateway(1) , Eth_gateway(2) , Eth_gateway(3) , Eth_gateway(4) )
               Settcp Eth_mac(1).eth_mac(2).eth_mac(3).eth_mac(4).eth_mac(5).eth_mac(6) , _
                      Ip_ , _
                      Subnetmask_ , _
                      Gateway_
               #if Debug_dhcp > 1
                  Print #1 , "DHCP-Ack: Default GW now: " ; Eth_gateway(1) ; "." ; Eth_gateway(2) ; "." ; Eth_gateway(3) ; "." ; Eth_gateway(4)
               #endif
            End If
         Case Dhcp_opt_ntp_server                           'Time Servers
            If Llen >= 4 Then
               Ntp_temp = 1
               Eth_ip_ntp(1) = Eth_buffer(lw + 2)
               Eth_ip_ntp(2) = Eth_buffer(lw + 3)
               Eth_ip_ntp(3) = Eth_buffer(lw + 4)
               Eth_ip_ntp(4) = Eth_buffer(lw + 5)
               Ip_ntp_ = Maketcp(eth_ip_ntp(1) , Eth_ip_ntp(2) , Eth_ip_ntp(3) , Eth_ip_ntp(4) )
               #if Debug_dhcp > 1
                  Print #1 , "DHCP-Ack: NTP server now: " ; Eth_ip_ntp(1) ; "." ; Eth_ip_ntp(2) ; "." ; Eth_ip_ntp(3) ; "." ; Eth_ip_ntp(4)
               #endif
            End If
         Case Dhcp_opt_dns
            If Llen >= 4 Then
                 Eth_ip_dns(1) = Eth_buffer(lw + 2)
                 Eth_ip_dns(2) = Eth_buffer(lw + 3)
                 Eth_ip_dns(3) = Eth_buffer(lw + 4)
                 Eth_ip_dns(4) = Eth_buffer(lw + 5)
                 Ip_dns_server_ = Maketcp(eth_ip_dns(1) , Eth_ip_dns(2) , Eth_ip_dns(3) , Eth_ip_dns(4) )
                 #if Debug_dhcp > 1
                    Print #1 , "DHCP-Ack: DNS server now: " ; Eth_ip_dns(1) ; "." ; Eth_ip_dns(2) ; "." ; Eth_ip_dns(3) ; "." ; Eth_ip_dns(4)
                 #endif
            End If
         Case Dhcp_opt_leasetime                            'IP Address Lease Time
            If Llen = 4 Then
               Dhcp_lease_time = Maketcp(eth_buffer(lw + 5) , Eth_buffer(lw + 4) , Eth_buffer(lw + 3) , Eth_buffer(lw + 2))
            End If
         Case Dhcp_opt_server_identifier                                        'DHCP Server Identification
            If Llen = 4 Then
               Dhcp_b_recent_server_ip(1) = Eth_buffer(lw + 2)
               Dhcp_b_recent_server_ip(2) = Eth_buffer(lw + 3)
               Dhcp_b_recent_server_ip(3) = Eth_buffer(lw + 4)
               Dhcp_b_recent_server_ip(4) = Eth_buffer(lw + 5)
               #if Debug_dhcp > 1
                  Print #1 , "DHCP-Ack: DHCP Server now: " ; Dhcp_b_recent_server_ip(1) ; "." ; Dhcp_b_recent_server_ip(2) ; "." ; Dhcp_b_recent_server_ip(3) ; "." ; Dhcp_b_recent_server_ip(4)
               #endif
            End If
         Case Dhcp_opt_renewal                                                  'Renewal (T1) Time Value
            If Llen = 4 Then
               Dhcp_renew_time = Maketcp(eth_buffer(lw + 2) , Eth_buffer(lw + 3) , Eth_buffer(lw + 4) , Eth_buffer(lw + 5))
            End If
         Case Dhcp_opt_rebinding                                                'Rebinding (T2) Time Value
            If Llen = 4 Then
               Dhcp_rebinding_time = Maketcp(eth_buffer(lw + 2) , Eth_buffer(lw + 3) , Eth_buffer(lw + 4) , Eth_buffer(lw + 5))
            End If
         Case &HFF                                                              'End of Options
            Exit Sub
         Case Else
               #if Debug_dhcp > 1
                  Print #1 , "DHCP-Ack: DHCP Opt: $" ; Hex(Eth_buffer(lw))
               #endif
      End Select
      If Eth_buffer(lw) > 0 Then
         Lw = Lw + 2
         Lw = Lw + Llen
      End If
   Loop


End Sub

'-------------------------------------------------------------------------------
'  DHCP create new transaction ID
'-------------------------------------------------------------------------------
Sub Dhcp_create_new_xid
Local Lw As Word
   Dhcp_transaction_id = Rnd(&Hffff)
   Shift Dhcp_transaction_id , Left , 16
   Lw = Rnd(&Hffff)
   Dhcp_transaction_id = Dhcp_transaction_id + Lw
End Sub

Dhcp_end:
 

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Last edited by six1 on Wed Dec 12, 2012 8:03 am; edited 2 times in total
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six1

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Joined: 27 Feb 2009
Posts: 515

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PostPosted: Mon Dec 10, 2012 5:24 pm    Post subject: Reply with quote

MYSQL

!!! http://www.mcselec.com/index2.php?option=com_forum&Itemid=59&page=viewtopic&t=11766 !!!

Code:

   #if Use_xram = 1
     Dim Eth_buffer(1500) As Xram Byte
   #else
     Dim Eth_buffer(1500) As Byte
   #endif



'-------------------------------------------------------------------------------
' MYSQL
' uses DNS Lookup! so define a DNS Server!
'-------------------------------------------------------------------------------
   Print #1 , "TEST MYSQL"

   Const Mysql_debug = 1
   $include "Classes\ETH_MYSQL.inc"


' Please have a look at "Mysql_process_data" in ETH_MYSQL.INC File!
' there you can take action on received result sets!
   '-------------------------------------------------------------------------------
   ' MYSQL DATABASE SETUP
   '-------------------------------------------------------------------------------
   Mysql_server_dst_port = 3306
   ' URL OR IP
'   Mysql_url = "six1.webhop.net"
   Mysql_url = "192.168.1.50"
   Mysql_username = "wiz200"
   Mysql_password = "wiz200"


  'connect mysql. for connection details have a look atETH_MYSQL.inc
  Call Mysql_connect(Mysql_url , Eth_buffer(1))
  'change Database
  Call Mysql_sql_query(com_init_db , "webserver" , Eth_buffer(1))
  'Select Data
  ' for Result Output have a look at ETH_MYSQL.INC / Mysql_process_data
  Call Mysql_sql_query(com_query , "Select * from temperatur order by lfdnr limit 20" , eth_buffer(1))
  Print #1 , " "
  Call Mysql_close()
 

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Last edited by six1 on Wed Aug 21, 2013 2:20 pm; edited 2 times in total
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six1

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Joined: 27 Feb 2009
Posts: 515

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PostPosted: Mon Dec 10, 2012 5:25 pm    Post subject: Reply with quote

Ready Projects (XMEGA & ATMEGA) for testing above
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albertsm

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Joined: 09 Apr 2004
Posts: 4705
Location: Holland

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PostPosted: Mon Dec 10, 2012 9:55 pm    Post subject: Reply with quote

hi SIX1,

Thank you for sharing your work. It is impressive and very convenient that you sorted that out. Translating RFC into code is not so simple as it seems.
The MYSQL demonstrates that a skilled programmer can let the 8 bit AVR do about anything.

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