Enc28j60 TCP Socket connection problem

demket · 2011-10-25 06:22

Hi, I try to send and record temperature value to computer for a few days. Server software was writen using python and it was tested with client software from another computer (no firewall). I had no success

Before, I used the same circuit to connect a smtp server. it sent mail with similiar code. I'm sure the circuit works. Same code that is for mail, didn't provide a connection my computer and my server software.

Can anyone explain the mistake?

CON

  _clkmode = xtal1+pll16x 
  _xinfreq = 5_000_000    

  BufferSize = 4096     
  MAX_DEVICES = 8            
  
OBJ

  sock    : "api_telnet_serial"
  key     : "Keyboard"
  tv      : "tv_text"

VAR

  long hararetStack[32]
  long sockbag[64]
  long size 
  byte webBuffer[BufferSize]
  byte tem
  byte fname[13]
  byte extension[4]
  long type
  long sicaklik
  long addrs[2 * MAX_DEVICES]
  long myServerIP           
  word myServerPort        
  word myHostPort          

DAT

  mac_addr    byte    $10, $00, $00, $00, $00, $01
  ip_addr        byte    10, 0, 3, 16        
  ip_subnet     byte    255, 255, 255, 0           
  ip_gateway   byte    10, 0, 3, 2               
  ip_dns         byte    10, 0, 3, 2          

  ip_serv        byte    10, 0, 3, 11             
  port_serv     byte    3422                

  port_host     byte    5433                  

PUB start

  key.start(26,27)
  tv.start(12)
  sock.start(8,9,10,11,-1,-1,@mac_addr,@ip_addr)    
  cognew(serverbaglan, @sockbag)
  tv.str(string("Basladi"))

PUB serverbaglan

  myServerIP:= (byte[@ip_serv]<<24)+(byte[@ip_serv+1]<<16)+(byte[@ip_serv+2]<<8)+byte[@ip_serv+3]
  myServerPort:= byte[@port_serv]
  myHostPort:= byte[@port_host]
  repeat 3
    key.getkey
    MyClient

PUB MyClient

    tv.str(string("Haydi "))
    dira[20]~~
    dira[22]~~
    \sock.connect(myServerIP, myServerPort)
    sock.resetBuffers
    sock.waitConnectTimeout(2000)

    if sock.isConnected
       outA[20] := 1
       delay_ms(500)
       outA[20] := 0
    else
       outA[22] := 1
       delay_ms(500)
       outA[22] := 0

Server software

#!/usr/bin/env python

"""
A simple echo server
"""

import socket
import sqlite3

vt = sqlite3.connect("sicaklik.db")
im = vt.cursor()
 #im.execute("CREATE TABLE lab1 (sicaklik)")


host = ''
port = 3422
backlog = 5
size = 1024
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((host,port))
s.listen(backlog)
while 1:
    client, address = s.accept()
    data = client.recv(size)
    if data:
        im.execute("INSERT INTO lab1 (sicaklik) VALUES (?) ", [data])
        vt.commit()
        client.send(data)
    client.close()

prof_braino · 2011-10-25 07:17

You might want to check out Hive-project.de

This hardware uses Enc28j60 for the props enterhnet communications. The full system has 3 props, but the props treated individually, so the code might apply to your situation.

The site is in german, but google translate works pretty well. The guys are very nice and helpful.

Enc28j60 TCP Socket connection problem

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