Support for Ethernet connections, e.g. via MKR ETH shield

[aentinger]

Usage:

• Uncomment this line.
• Instantiate Ethernet_ConnectionHandler in thing_properties.h

  byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
  EthernetConnectionHandler ArduinoIoTPreferredConnection(mac);

• Pass to ArduinoIoTCloud (as usual)

  ArduinoCloud.begin(ArduinoIoTPreferredConnection, "mqtts-sa.iot.oniudra.cc");

  This should fix #40 . @baqwas can you please test this one?

[github-actions[bot]]

Memory usage change @ 1bff3e3663419ee2c87376f86ee4ebf03034ee71

Board	flash	RAM for global variables
arduino:samd:mkr1000	:small_red_triangle: +24 - +24	:small_red_triangle: +8 - +8
arduino:samd:mkrgsm1400	:small_red_triangle: +24 - +24	:small_red_triangle: +8 - +8
arduino:samd:mkrnb1500	:small_red_triangle: +40 - +40	:small_red_triangle: +24 - +24
arduino:samd:mkrwan1300	0 - 0	0 - 0
arduino:samd:mkrwan1310	0 - 0	0 - 0
arduino:samd:mkrwifi1010	:small_red_triangle: +24 - +24	:small_red_triangle: +8 - +8
arduino:samd:nano_33_iot	:small_red_triangle: +28 - +28	:small_red_triangle: +12 - +12
esp8266:esp8266:huzzah	0 - 0	0 - 0

Click for full report table

Board|examples/ConnectionHandlerDemo
flash|examples/ConnectionHandlerDemo
RAM for global variables -|-|- arduino:samd:mkr1000|24|8 arduino:samd:mkrgsm1400|24|8 arduino:samd:mkrnb1500|40|24 arduino:samd:mkrwan1300|0|0 arduino:samd:mkrwan1310|0|0 arduino:samd:mkrwifi1010|24|8 arduino:samd:nano_33_iot|28|12 esp8266:esp8266:huzzah|0|0

Click for full report CSV

``` Board,examples/ConnectionHandlerDemo
flash,examples/ConnectionHandlerDemo
RAM for global variables arduino:samd:mkr1000,24,8 arduino:samd:mkrgsm1400,24,8 arduino:samd:mkrnb1500,40,24 arduino:samd:mkrwan1300,0,0 arduino:samd:mkrwan1310,0,0 arduino:samd:mkrwifi1010,24,8 arduino:samd:nano_33_iot,28,12 esp8266:esp8266:huzzah,0,0 ```

[baqwas]

Appreciate your prompt support. Thx for closing it.

Kind regards.

[baqwas]

Hello @ubidefeo,

I would like to "second" your suggestion.

On a separate matter but perhaps related to the Ethernet library, I have another anomaly with the library that I cannot "document" properly (or rather capture precisely). My code halts after 23+ hours of operation when using the library for two different applications on MKR1000 and the humble UNO (R3) board. I have isolated the issue to the Ethernet library (perhaps WizNET hardware related?) but I will try to replicate the issue with the ETH Rev 2 shield (on order now for the UNO board) before logging it as such. (I understand the need for a completely separate thread for this purpose; I explicitly disable the SD card on the MKR ETH shield as it is necessary but it does not alleviate the issue). Thanks.

Kind regards.

[aentinger]

Hi @ubidefeo :wave: It (that is sorting out all defines in such way that no WiFi/GSM/NB code is pulled in) can be done for sure. However, looking at the MKR ZERO schematic I find that it has in fact a crypto chip so I'm not sure from where your problems were coming from.

Using Ethernet shield with any connected board makes no sense to me anyway, since you'll be paying for "connectivity hardware" (GSM/UMTS modems, WiFi, LoRa chips) that you'll not be using anyway.

@baqwas As much as I appreciate your current resurfacing I'm left to wonder where you've been since I asked you to try that feature on 31/8/2020?

[ubidefeo]

@aentinger you are right, the crypto is there... to be honest I did not try to compile for the MKR ZERO because I assumed it did not have one. The case comes from a user's request in the forum. She has a WiFi 1010 but for one instance of her project the board has to run in a location with only wired connections, and since she had a MKR Ethernet she'd just use the shield on the WiFi1010. Of course not using the hardware doesn't make much sense, but if that's what you have ;) I'm gonna just get ahold of a MKR Zero and run another test :)

As much as I appreciate your current resurfacing I'm left to wonder where you've been since I asked you to try that feature on 31/8/2020? LOL... Alex, I have missed several GH notifications over the past few months, and it could very well have happened to @baqwas 😁

[aentinger]

LOL... Alex, I have missed several GH notifications over the past few months, and it could very well have happened to @baqwas :grin:

Sure, but he came around requesting that feature so I assume there must have been some level of interest. Regardless, I'd support Ethernet Shield ONLY on MKR ZERO, as it simply makes no sense for the other boards.

EDIT And it's not possible on MKR ZERO because although there's a crypto on the schematic there's no crypto mounted on the sold boards.

[baqwas]

Hello @aentinger,

You had promptly attended to my request a few months ago. I remain indebted to you for that assistance since it helped me to make some progress. I no longer have that specific issue. You also explained your go-forward plan. I am perfectly fine with that.

The issue that I am experiencing needs to be documented and captured a little more professionally on MY part. Until then, I will continue to perform my workaround on a daily scheduled basis. Sorry for not making myself a little more clear (English is not my primary spoken language). Thanks again.

Kind regards.

[aentinger]

Hi @baqwas :wave: :coffee: Thanks for getting back. So what you are saying is that you are using Arduino IoT Cloud with a MKR ETH Ethernet shield? What board do you use?

[per1234]

you'd have to still use the shield on a Crypto-enabled board.

What about people supplying their own crypto chip? Low priced ATECC508 modules are readily available and even working with a bare chip is very doable considering the availability in a SOIC package (and yes, I know the footprint on the MKR Zero is not SOIC, I'm talking about connecting an external module).

[aentinger]

Doable. A simpler solution would be to just to solder the chip where it would be placed on the MKR ZERO board. Still I don't think we should entertain such hacky solutions, I rather prefer a clean one.

[ubidefeo]

@aentinger I can solder such small footprint components, but most can't. ECC508 modules are available for RPi as small breakouts, so users will just need to know. Of course the absence of a crypto-chip triggers an error in IoT Cloud so it should be a non-issue 👍

[baqwas]

Hi @baqwas wave coffee Thanks for getting back. So what you are saying is that you are using Arduino IoT Cloud with a MKR ETH Ethernet shield? What board do you use?

Hello @aentinger,

The specific response to your question is that I am trying out the tutorial exercises with MKR1000. I have to use only ETH interfaces in my current infrastructure owing unrelated constraints at my end regarding WiFi.

My current stack consists of MKR1000, MKR ETH and MKR IoT with SD card slots for the latter two kept empty. (The MKR GPS and the "mother ship" is on back-order :))

Kind regards.

[gannaramu]

I would appreciate it if someone can look at PR #70 @per1234 @ubidefeo @aentinger