Arduino Uno with ENC28J60 won't obtain IP

Solved
1

Hi all,

My Arduino Uno connected to a local server running on my Mac can’t obtain an IP address. Serial monitor reports a DHCP error.

Mac is connected to my TP-link router via Wi-Fi (local IP 192.168.0.101).
Blynk app is set to connect to 192.168.0.101 via port 8443.
ENC28J60 is connected to TP-LINK routers ethernet port.
In my sketch i have <Blynk.begin(auth, IPAddress(192,168,0,101), 8442);>

I am not experienced in networking so I dont know if Ethernet connected hardware can connect to a Wi-Fi connected device (which are on the same network).

Can anyone please help?
Thanks

2

Yes the Uno should be able to connect to server running on the MAC (firewall and ports permitting etc).

Sketch and Serial Monitor please.

3

Sorry, sketch got deleted somehow.

#define BLYNK_PRINT Serial    // Comment this out to disable prints and save space
#include <UIPEthernet.h>
#include <BlynkSimpleUIPEthernet.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "d***************************************************0f";

void setup()
{
  Serial.begin(9600);
  
  //Blynk.begin(auth);
  
  // You can also specify server.
  // For more options, see Boards_Ethernet/Arduino_Ethernet_Manual example
  //Blynk.begin(auth, "blynk-cloud.com", 8442);
  Blynk.begin(auth, IPAddress(192,168,0,101), 8442);
}

void loop()
{
  Blynk.run();
}

And serial monitor:

[0[0] Getting IP...
[60166] DHCP Failed!
[0] Getting IP...
[60167] DHCP Failed!
[0] Getting IP...

Thanks for a prompt response.

4

@kost9 include these items in your sketch and paste another Serial Monitor if it doesn’t connect:

//..........................
byte arduino_mac[] = { 0xDE, 0xED, 0xBA, 0xFE, 0xFE, 0xED };
IPAddress arduino_ip ( 192,   168,   0,  150);
IPAddress dns_ip     (  192,   168,   0,   101);
IPAddress gateway_ip ( 192,   168,   0,   101);
IPAddress subnet_mask(255, 255, 255,   0);


void setup() {
  //.............
    Blynk.begin(auth, "192.168.0.101, 8442, arduino_ip, dns_ip, gateway_ip, subnet_mask, arduino_mac);

}
5

Now it obtains an IP but cant connect.
Serial Monitor:

[0] Using static IP
[1050] IP:192.168.0.150
[1051] 
    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v0.4.4 on Arduino Uno

[5001] Connecting to 192.168.0.101:8442
[30003] Connecting to 192.168.0.101:8442
[55005] Connecting to 192.168.0.101:8442
6

I get that response from my ENC when I have one of my pins disconnected. Are you sure all pins are connected correctly?

Confirm which pins you are using on the Uno.

Can you ping the Uno on 192.168.0.150?

7

Thank you Costas, I had one of my pins misconnected. Very dumb of me.

Thanks for great support!

1 Like
8

Common problem and Serial Monitor doesn’t really give you a warning unless you have experienced it before i.e. it gives you an IP and you think the ENC is fully operational, when it’s not.

1 Like
9

Hey …all of my pins are ok …which pins you messed up btw? I am still getting same error “Connecting…”

10

@VINEET Old topic. Please create your own, with details. Thank you.