Ethernet shields, SPI and Macchina

This post will describe how to get Macchina talking with SPI shields, including Ethernet shields.

But first some Background:

When the Arduino Mega was introduced, for some reason, the SPI lines where in a different physical location than the Arduino UNO. This meant that several SPI-dependant shields were not compatible with both the Mega and the UNO without using some jumper wires.

MEGA SPI: 50 (MISO), 51 (MOSI), 52 (SCK), 53 (SS).

UNO SPI: 10 (SS), 11 (MOSI), 12 (MISO), 13 (SCK).

Our solution to get around this, and allow for more compatibility between the Macchina and shields, was to add some solder-jumpers to the Macchina board. Now one can easily swap the SPI lines depending on what sort of shield is attached.

Flash forward a few years and the SPI pins have not moved, BUT it seems as though the official solution to this was to use a down-ward facing 2X3 ICSP header to make connection to SPI pins on ALL Arduino boards.

While laying out Macchina, we moved the ISCP header to make room for all the extra automotive interface stuff. This alone would not be an issue, except for the fact that some new shields (the Arduino Ethernet Shield for example) ONLY has these SPI pins on the down-ward facing ISCP header and no where else. This is an issue, a known issue.

Work-arounds are as follows:

1. If using the Official Ethernet shield: Need to add jumper wires to make correct connections. There are many ways to accomplish this including this solution that connects wires from the ICSP header to the side headers. Some soldering required.

2. Is using SEEEDSTUDIO's Ethernet Shield: Need to re-route the SPI lines by using the easier-to-do-than-soldering-wires method shown here:

Side note: Both of these boards are sold at Radioshack (!?) for about $32.

3. If using the Sparkfun-branded Ethernet Shield: No modifications necessary since wires are going directly to the SPI pins on the side headers.

Regardless of which of these shields are used, the solder jumpers on the Macchina must be set as follows:

Once hardware modifications are done, plug the shield into the Macchina and get coding!

A good first test would be to try out is the built-in example called "WebServer" that comes with the standard Arduino IDE.

Lastly, a note regarding SPI:

The CAN interface also uses SPI to communicate with the microcontroller. While the hardware is set up correctly (SS (chip select) for the CAN controller is connected to a un-used pin on microcontroller, special care must be taken with the code to ensure communication between Ethernet Microcontroller and CANBUS Microcontroller is handled correctly.

Comments

Submitted by seoo on Sat, 03/23/2024 - 03:10

Please continue this great work and I look forward to more of your awesome blog posts.You know your projects stand out of the herd. There is something special about them.This was really an interesting topic and I kinda agree with what you have mentioned here!I love seeing blog that understand the value of providing a quality resource for free.Hello, I have browsed most of your posts. This post is probably where I got the most useful information for my research. Thanks for posting, maybe we can see more on this. Are you aware of any other websites on this subject.  마산출장마사지

Submitted by seth65475 on Mon, 03/25/2024 - 01:22

In-demand Service: In today's fast-paced world, where time is of the essence and convenience is king, this service has emerged as a beacon of hope for busy individuals everywhere. Its ability to streamline everyday tasks and simplify complex processes has made it a must-have for anyone looking to stay ahead of the curve. Whether it's for managing finances, organizing schedules, or staying connected with loved ones, this service offers a solution for every need. Its widespread adoption is a testament to its effectiveness and reliability, with users clamoring to get their hands on the latest updates and features. In a world where time is the ultimate commodity, this service is worth its weight in gold. Dexscreener Trending Bot

Submitted by james1274411 on Mon, 03/25/2024 - 01:46

Dive into a World of Enhanced Performance: Unlock Your Physical Potential with Testosterone Cypionate, Now Available for Purchase Online. Delve into a comprehensive fitness journey by incorporating Testosterone Cypionate into your regimen. From sculpting your physique to boosting your endurance, this hormone serves as a cornerstone for achieving your fitness aspirations. With our user-friendly online platform, procuring Testosterone Cypionate has never been simpler. Say goodbye to the inconvenience of traditional methods and embrace the ease of online ordering. Take the first step towards your fitness goals today and experience the transformative power of Testosterone Cypionate. testosterone enanthate for sale

Submitted by seoo on Mon, 03/25/2024 - 06:38

Really I enjoy your site with effective and useful information. It is included very nice post with a lot of our resources.thanks for share. i enjoy this post.I really loved reading your blog. It was very well authored and easy to understand.   shine electro components

Submitted by seth65475 on Mon, 03/25/2024 - 23:50

Struggling to clear out pipe blockages in Awans? Allow our seasoned professionals to step in and provide comprehensive solutions for all your plumbing requirements, spanning across homes, enterprises, and commercial setups. Débouchage Awans

Submitted by seoo on Tue, 03/26/2024 - 11:14

Wow! Such an amazing and helpful post this is. I really really love it. It's so good and so awesome. I am just amazed. I hope that you continue to do your work like this in the future alsoAnyways I am here now and could just like to say thank for a tremendous post and a all round entertaining website. Please do keep up the great work.    Espresso Coffee Tamper

Submitted by seth65475 on Thu, 03/28/2024 - 00:25

An example of this is Atypical Mole Syndrome. This syndrome brings about a tendency inside the physique to kind an abnormal amount of moles on our skin. This is some thing that we could have obtained from our parents or our grandparents and we’ve no manage over regardless of whether we obtain it or not. Situs Slot Terbaik

Submitted by seth65475 on Thu, 03/28/2024 - 00:25

Immerse yourself in the allure of Portugal's most coveted addresses with our comprehensive real estate handbook. Whether you seek a palatial retreat in the historic streets of Lisbon or a secluded estate amidst the rolling hills of the Algarve, our guide offers an in-depth exploration of the finest properties this enchanting country has to offer. titaniuminvest.com

Submitted by seoo on Thu, 03/28/2024 - 06:18

Great write-up, I am a big believer in commenting on blogs to inform the blog writers know that they’ve added something worthwhile to the world wide web!..Hello, this weekend is good for me, since this time i am reading this enormous informative article here at my home. dortmund gegen leverkusen

Submitted by seth65475 on Fri, 03/29/2024 - 23:54

Also known as HR Management Systems (HRMS) or HR Information Systems (HRIS), an HR system is a business application designed to manage the complete employee lifecycle from recruitment and onboarding through core HR administration to employee engagement and performance management. hr system推介

Submitted by seth65475 on Fri, 03/29/2024 - 23:54

Oh my! an incredible article man. Thanks a lot Unfortunately I am experiencing issues with ur rss . Don’t know why I am struggling to subscribe it. Perhaps there is somebody getting identical rss issues? Anyone who can help kindly respond. Appreciate it mantra88

Submitted by seth65475 on Sat, 03/30/2024 - 02:44

GNA는 Google 광고 파트너로, 숙련된 프로그래머, 창의적인 디자이너 및 노련한 온라인 마케팅 전문가로 구성된 팀을 자랑합니다. 호주에서 웹사이트 제작 전문가를 찾고 계신가요? 미래를 위한 솔루션과 맞춤형 e-마케팅 전략을 경험해보세요. 웹사이트 제작 호주

Submitted by seth65475 on Sat, 03/30/2024 - 02:44

Channel the laid-back glamour of island living with AMIClubwear's luxurious collection of tropical dresses, designed to evoke the sun-kissed beauty of far-flung destinations. Picture yourself sipping champagne on the deck of a yacht, the warm glow of the setting sun casting a golden hue over the azure waters. AMIClubwear's dresses capture the essence of this dreamy scene, with their flowing fabrics, intricate embellishments, and striking prints that command attention wherever you go. Whether you're attending a beachfront wedding, lounging in a beach cabana, or exploring exotic markets in search of hidden treasures, these dresses are sure to make a statement. With their timeless elegance and effortless allure, AMIClubwear's tropical dresses are the ultimate wardrobe essential for any modern-day jet-setter. AMIClubwear tropical dresses

Submitted by seoo on Sat, 03/30/2024 - 14:57

Wow, What a Excellent post. I really found this to much informatics. It is what i was searching for.I would like to suggest you that please keep sharing such type of info.Thanks..!You made such an interesting piece to read, giving every subject enlightenment for us to gain knowledge. Thanks for sharing the such information with us to read this... voodoo streams

Submitted by seth65475 on Sun, 03/31/2024 - 11:30

Great job here. I definitely enjoyed what you had to say. Keep heading because you undoubtedly bring a new voice to this subject. Not many people would say what youve said and still make it interesting. Properly, at least Im interested. Cant wait to see extra of this from you. cebanqq

Submitted by seoo on Sun, 03/31/2024 - 15:04

I just found this blog and have high hopes for it to continue. Keep up the great work, its hard to find good ones. I have added to my favorites. Thank You.Superbly written article, if only all bloggers offered the same content as you, the internet would be a far better place..    OEM Plywood Factory

Submitted by naveedsaddar1111 on Mon, 04/01/2024 - 19:42

Aw, this was a very nice post. In thought I want to put in writing like this additionally ?taking time and actual effort to make an excellent article?however what can I say?I procrastinate alot and under no circumstances seem to get one thing done. chatrandom

Submitted by seoo on Wed, 04/03/2024 - 05:44

Thank you because you have been willing to share information with us. Nice to read your article! I am looking forward to sharing your adventures and experiences.I have read all the comments and suggestions posted by the visitors for this article are very fine,We will wait for your next article so only.Thanks! bitcoin avage

Submitted by james1274411 on Wed, 04/03/2024 - 06:53

Your content grabbed my attention, and I must say, it's nothing short of exceptional. The refreshing and captivating way you express ideas is truly praiseworthy. slotguru88

Submitted by seoo on Fri, 04/05/2024 - 04:41

I know your expertise on this. I must say we should have an online discussion on this. Writing only comments will close the discussion straight away! And will restrict the benefits from this information.Thank you because you have been willing to share information with us. texas instruments distributor

Submitted by seoo on Sat, 04/06/2024 - 05:20

I just found this blog and have high hopes for it to continue. Keep up the great work, its hard to find good ones. I have added to my favorites. Thank You.Superbly written article, if only all bloggers offered the same content as you, the internet would be a far better place.. immediate 2000 proair

Submitted by seth65475 on Sat, 04/06/2024 - 23:15

great put up, very informative. I ponder why the opposite experts of this sector don’t notice this. You must continue your writing. I’m confident, you’ve a huge readers’ base already! maxwin303

Submitted by seth65475 on Sat, 04/06/2024 - 23:15

Промокод 1xBet при регистрации только один, это: ONEX777 только по нему ты получишь бонус в 32,500 рублей, все остальные коды не действительные и не дают такой бонус. Актуальный промокод 1хБет на сегодня бесплатно промокод 1xbet кз

Submitted by seoo on Tue, 04/09/2024 - 04:54

I wanted to thank you for this excellent read!! I definitely loved every little bit of it. I have you bookmarked your site to check out the new stuff you post.Wow, What a Excellent post. I really found this to much informatics. It is what i was searching for.I would like to suggest you that please keep sharing such type of info.Thanks btc 6 avage

Submitted by seoo on Mon, 04/15/2024 - 12:18

Yes i am totally agreed with this article and i just want say that this article is very nice and very informative article.I will make sure to be reading your blog more. You made a good point but I can't help but wonder, what about the other side? !!!!!!ThanksI wanted to thank you for this excellent read!! I definitely loved every little bit of it. I have you bookmarked your site to check out the new stuff you post. Trade 200 Reopro

Submitted by seoo on Tue, 04/16/2024 - 23:42

I’m going to read this. I’ll be sure to come back. thanks for sharing. and also This article gives the light in which we can observe the reality. this is very nice one and gives indepth information. thanks for this nice article...When your website or blog goes live for the first time, it is exciting. That is until you realize no one but you and your.Awesome article, it was exceptionally helpful! I simply began in this and I'm becoming more acquainted with it better! Cheers, keep doing awesome!Thanks for sharing the such information with us to read this...We are really grateful for your blog post. You will find a lot of approaches after visiting your post. I was exactly searching for. Thanks for such post and please keep it up. Great work. daman games

Submitted by seoo on Mon, 04/22/2024 - 14:41

Thank you because you have been willing to share information with us. Yes i am totally agreed with this article and i just want say that this article is very nice and very informative article.I will make sure to be reading your blog more. You made a good point but I can't help but wonder, what about the other side? !!!!!!Thanks 구글광고대행

Submitted by seoo on Mon, 04/22/2024 - 14:49

I havent any word to appreciate this post.....Really i am impressed from this post....the person who create this post it was a great human..thanks for shared this with us.this is really nice to read..informative post is very good to read..thanks a lot!Nice post! This is a very nice blog that I will definitively come back to more times this year! Awesome article, it was exceptionally helpful! I simply began in this and I'm becoming more acquainted with it better! Cheers, keep doing awesome!Interesting topic for a blog. I have been searching the Internet for fun and came upon your website. 송파출장안마

Submitted by seoo on Fri, 04/26/2024 - 06:55

Yes i am totally agreed with this article and i just want say that this article is very nice and very informative article.I will make sure to be reading your blog more. You made a good point but I can't help but wonder, what about the other side? !!!!!!ThanksI wanted to thank you for this excellent read!! I definitely loved every little bit of it. I have you bookmarked your site to check out the new stuff you post. immediate 5x reopro

Submitted by miles on Mon, 04/29/2024 - 01:05

It's such a valuable resource for students<a href="https://www.mainecoonfurryhome.com/">american maine coon kittens for sale</a>[[https://chihuahuapuppiesonsale.com/|teacup chihuahua for sale]] [url=https://www.sweetcavalierpuppies.com/cavalier-dogs-for-sale/]king charles cavalier spaniel for sale[/url][url=https://sweetcavalierpuppies.com/[url=https://sweetcavalierpuppies.com/]... charles cavalier puppies for sale[/url]

Pages