D21G IND.IO not connecting to Ethernet Module

I've been attempting to get a sketch working that involves UDP send/receive from the Eth module connected to a D21G IND.IO.  I believe I've followed just about every piece of documentation avaialble (as well as experimenting with numerous other permutations of code) and had no success.  I'm in need of some review/commentary of my attempts and perhaps some guidance:

The D21G works well on its own - the sketch for simple actuator control works fine.

The Eth Expansion module also boots up fine and I can see normal 'hi, look at me' packets coming out from an ipV6 address.

The network it is on has DHCP but i'm targeting a static address.  (I've tried DHCP and it does not work either)

The code is based heavily on a test sketch I did on a Leonardo Eth which worked fine and conencted to the network without issue.

I'm suspecting is something to do with configuring the SPI bus but I can't find a specific example for the D21G and my attempts to kludge something together from other available samples/documents has not proven sucessful.

The root symptom is that the module jsut will not seem to get a dynamic IP or accept a manual IP and thus can't communicate.

The most recent version filtered for relevant code:

Includes:

#define W5500_ETHERNET_SHIELD
#include <Indio.h>
#include <Wire.h>
#include <SPI.h> 
#include <Ethernet2.h>
#include <EthernetUdp2.h>
#include <UC1701.h>      // Industruino LCD
static UC1701 lcd;

Setting net variables (I've tried both versions with IP objects or byte arrays):

//Arduino Net Interface
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0x01, 0x01 };
//byte ip[] = { 10, 102, 123, 123 };
//byte subnet[] = { 255, 255, 0, 0 };
//byte gateway[] = { 10, 102, 255, 254 };
//byte dnServer[] = { 8, 8, 8, 8 };  //Changed for security purposes
IPAddress ip(10, 102, 123, 123);
IPAddress subnet(255, 255, 0, 0);
IPAddress gateway(10, 102, 255, 254);
IPAddress dnServer(8, 8, 8, 8);  //Changed for security purposes
unsigned int localPort = 10001;

// Create UDP Instances
EthernetUDP udpSock;

The setup code (I've also tried the IND.IO versions of these - no apparent difference):

pinMode(10, OUTPUT);  //Eth SS
digitalWrite(10, LOW);  //Eth SS On
pinMode(4, OUTPUT);  //SD SS
digitalWrite(4, HIGH);  //SD SS Off

Starting the Ethernet, UDP and Serial (Final Println always returns 0.0.0.0)

delay(5000);
// Start the Ethernet and UDP
Ethernet.begin(mac, ip); //, dnServer, gateway, subnet);
udpSock.begin(localPort);
delay(5000);
// Start Serial Port
SerialUSB.begin(9600);
SerialUSB.print("My IP is: ");
SerialUSB.println(Ethernet.localIP());

The loop code isn't relevant as we never get that far (and it works fine on the Leonardo Eth).  It seems I just can't get the module itself to initialize.

Hoping someone can see what I'm missing here?

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Mike Walker

Mike Walker

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Asked on 10/18/17, 10:11 PM

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Hi Mike, please check if you are using the Industruino version of the Ethernet2 library. There is one important difference with the original: change the SPI speed to 4MHz in the Ethernet2 library, /src/utility/w5500.cpp , line #25, as seen here: https://github.com/Industruino/Ethernet2/blob/master/src/utility/w5500.cpp

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Tom

on 10/26/17, 9:53 AM

I am currently out of the country returning in early May.  This email account will be monitored regularly and time sensitive emails will be addressed as time/connectivity allows.  The remainder will be reviewed upon my return. 

 

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on 4/24/18, 5:13 PM

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