The pings are not consistently stable

[cmouli1995]

Hi Everyone,

I'm using
Arduino ide: 1.8.15
UIPEthernet :2.0.12
Ethernet Module : ENC28J60
Controller :ATmega4809(MegaCoreX)

#include <SPI.h>
#include <EthernetENC.h>
uint8_t mac[6] = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05};

IPAddress serverIP(192, 168, 1, 92);

IPAddress myIP(192, 168, 1, 143);

EthernetServer server = EthernetServer(5000);

void setup()
{
  Serial2.begin(9600);
  Ethernet.init(7);
  Ethernet.begin(mac, myIP);

  server.begin();
}

void loop() {
  if (ping(serverIP)) {
    Serial2.println("Ping successful!");
  } else {
    Serial2.println("Ping failed!");
  }

  size_t size;

  if (EthernetClient client = server.available())
  {
    while ((size = client.available()) > 0)
    {
      uint8_t* msg = (uint8_t*)malloc(size);
      size = client.read(msg, size);
      Serial2.write(msg, size);
      free(msg);
    }
    client.println("DATA from Server!");
    client.stop();
  }

  //  delay(500);  // Wait for 5 seconds before pinging again
}

bool ping(IPAddress ip) {
  EthernetClient client;

  if (client.connect(ip, 5000)) {  // Use a common port like 7
    client.stop();
    return true;
  } else {
    client.stop();
    return false;
  }
}

I am conducting a simple ping test, and it is showing unstable results. The pings are not consistently stable. Could you please review the code for any potential issues?

[gilshultz]

@cmouli1995

// delay(500);

That is 1/2 second, change it to about 2000 and see if things improve after enabling it. The target has other things to do beside responding to pings.

[cmouli1995]

I'm not pinging the target; I'm pinging my IP address only. When I connect my switch locally, it pings perfectly. However, whenever I connect my switch to the network, it does not ping successfully.
And I'm changed to 2000 delay. it's not working.

[Juraj]

delay will not work. the library only handles network (including ping replay) if the functions of the library are invoked.

please use the EthernetENC library

[cmouli1995]

I used EthernetENC too, but its not working.

[Juraj]

how is it not working? if UIPEthernet works I am sure EthernetENC works too

[cmouli1995]

[Juraj]

I didn't recommend EthernetENC for this specific problem, but in general. I am the maintainer of both these libraries.

[cmouli1995]

Let me know how to reslove this issue.

[Juraj]

comment out the if (ping(serverIP)) {

[cmouli1995]

yes i comment out the if(ping(serverIP)) {

//#include<SPI.h>
#include <UIPEthernet.h>

byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
IPAddress ip(192, 168, 1, 143);
IPAddress gateway(192, 168, 1, 1);
IPAddress subnet(255, 255, 255, 0);

IPAddress serverIP(192, 168, 1, 92);



EthernetServer server = EthernetServer(5000);

void setup()
{
  Serial2.begin(9600);
//  SPI.begin();
  Ethernet.init(7);
  Ethernet.begin(mac, ip, gateway, subnet);
  server.begin();
}

void loop() {
//  if (ping(serverIP)) {
//    Serial2.println("Ping successful!");
//  } else {
//    Serial2.println("Ping failed!");
//  }
//


  if (EthernetClient client = server.available())
  {
    while (client.available() > 0)
    {
//      uint8_t* msg = (uint8_t*)malloc(size);
//      size = client.read(msg, size);
//      Serial2.write(msg, size);
//      free(msg);
    }
//    client.println("DATA from Server!");
    client.stop();
  }

  //    delay(2000);  // Wait for 5 seconds before pinging again
}

//bool ping(IPAddress ip) {
//  EthernetClient client;
//
//  if (client.connect(ip, 5000)) {  // Use a common port like 7
//    client.stop();
//    return true;
//  } else {
//    client.stop();
//    return false;
//  }
//}

Still I'm facing the same problem.

[Juraj]

is the MAC address and IP address unique?

[cmouli1995]

yes, its was unique.

[johnerrington]

@cmouli1995

Serial2.begin(9600);

Why not use a modern baud rate? Are you sending your data to a teletype?

just a thought.