[AVR] Ethernet connection failure (arduino)

[archusvijay1]

EThernet connection failure(arduino)

Hello,
I am trying to implement a device which read voltage and current and send the signal to a server.I completed this task using arduino uno and ENC28j60 Ethernet module with the help of UIPEthernet library. I am getting the signal in the server.but some time it fails .It maybe after running half a day,or after one day.also i get continuous signal for 2 days also.after that it will hang or not sending the data to the server. What might be the problem?.please help .

i here by attach the program .

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Code C - [expand]
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void setup(){
 Serial.begin(9600);
  //Serial.println("Starting");
  SPI.begin();
 // watchdogSetup();
  pinMode(Contd,OUTPUT);
  pinMode(NotContd,OUTPUT);
  digitalWrite(Contd,HIGH);
  digitalWrite(NotContd,HIGH);
  delay(2000);
  digitalWrite(Contd,LOW);
  digitalWrite(NotContd,LOW);
  start_ethernet();
}
 
void loop() {
  //wdt_reset();
      reset_millis = millis();
      // put your main code here, to run repeatedly:
  if(reset_millis >= reset_period){
        Resetuno();
    }
   
    dc_volt = 0;
    dc_volt   = analogRead(A5);//*5)/1024);
    dc_volt = dc_volt*0.0363;
    eb_volt   = Measure_Vrms(1,800,0.8759,10);//1.1    4.04///
    inv_curr  = Measure_Irms(4,800,0.039,10); //0.0017
 
 
    client.connect(server, 80);
    delay(1000);
  if (client.connected()){//(server, 80)) {
    Serial.println("-> Connected");
    digitalWrite(Contd,HIGH);
    digitalWrite(NotContd,LOW);
 
    failed_data = 0;
  
    client.print( "GET /index.php/add/add_data?");
    client.print("dc_volt=");
    client.print(dc_volt);
    client.print("&");
    client.print("eb_volt=");
    client.print(eb_volt);
    client.print("&");
    client.print("inv_volt=");
    client.print(inv_volt);
    client.print("&");
    client.print("inv_curr=");
    client.print(inv_curr);
    client.print("&");
    client.println( " HTTP/1.1");
    client.print( "Host: " );
    client.println(server);
    client.println( "Connection: close");//keep-alive" );// close
    client.println();
    client.println();
    client.stop();
   delay(interval);

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[aruipksni]

Re: EThernet connection failure(arduino)

there are a lot of reasons.
1st thing i would check is if my ethernet is ok.
so i would try to send ping to connected pc, and run it constantly
for a long time to check if the ping doesn't stop.
(there might be some clocking issues in phy/switch for example, or bad cables or terminations).

 

[archusvijay1]

Re: EThernet connection failure(arduino)

My Ethernet connection is OK. I replace the cable also.
during the debugging time i can notify that it is not come out side from the client.connected() function.

 

[aruipksni]

Re: EThernet connection failure(arduino)

My Ethernet connection is OK. I replace the cable also.
during the debugging time i can notify that it is not come out side from the client.connected() function.

so it is probebly a software problem with the uipethernet.
so you might check if you got the latest vesion
of this library.

 

[archusvijay1]

Re: EThernet connection failure(arduino)

so it is probebly a software problem with the uipethernet.
so you might check if you got the latest vesion
of this library.

yes . i am using the latest version.This problem exist some times only.
I think the problem comes from the client.print() or client.stop() function. After connecting the server (ie.client.connected() is true) the net disconnected the system hang.am i right?.

can i use watch dog timer to overcome this problem or any other method to resolve this problem?

 

[aruipksni]

Re: EThernet connection failure(arduino)

i think you can check the arduino forum.
it has lot of info about such of problem, and how to cope with it.
there are sw or hw solutions you can try.

take a look at :

https://forum.arduino.cc/index.php?topic=273977.0