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 seth65475 on Sun, 02/18/2024 - 05:27

Thank you for making my own students have access to your site post. Your kindness is greatly appreciated. I’ve some ongoing assignments and I wanted them to assist me with it. The only way they were able to achieve that was carry out some homework on the internet so as to help make my work faster. They came across your site as well as content on it, particularly this blog post, really helped them to get good conclusions on those things we needed to perform. Of course, I will continue to really visit the site for brand new updates on this top and other issues of curiosity. Solar company

Submitted by james1274411 on Mon, 02/19/2024 - 00:40

I precisely needed to thank you very much once more. I am not sure what I would have undertaken in the absence of the actual tips and hints discussed by you over my topic. It truly was the terrifying matter for me, but understanding the very professional avenue you treated that made me to cry for gladness. Extremely thankful for your assistance and expect you are aware of a great job you’re accomplishing instructing the others through the use of a web site. I’m certain you have never met all of us. Winchester ballistic silvertip 30-06 sprg 150 gr

Submitted by seth65475 on Mon, 02/19/2024 - 09:37

Woh I like  your  blog posts,  saved to fav! . https://acestills.com/ ============  Fantastic blog! Do you have any tips and hints for aspiring writers? I’m planning to start my own website soon but I’m a little lost on everything. Would you suggest starting with a free platform like Wordpress or go for a paid option? There are so many options out there that I’m completely overwhelmed .. Any tips. aig car insurance

Submitted by james1274411 on Mon, 02/19/2024 - 20:38

Whats up this is kind of of off topic but I was wanting to know if blogs use WYSIWYG editors or if you have to manually code with HTML. I’m starting a blog soon but have no coding skills so I wanted to get advice from someone with experience. Any help would be enormously appreciated! How To Trend on Dextools

Submitted by seth65475 on Tue, 02/20/2024 - 01:15

Great – I should definitely pronounce, impressed with your site. I had no trouble navigating through all tabs and related information ended up being truly simple to do to access. I recently found what I hoped for before you know it in the least. Reasonably unusual. Is likely to appreciate it for those who add forums or something, site theme . a tones way for your client to communicate. Nice task. 토토사이트모음

Submitted by seth65475 on Tue, 02/20/2024 - 03:26

I am usually to running a blog and i actually recognize your content. The article has really peaks my interest. I am going to bookmark your website and keep checking for new information. porno dominicano

Submitted by seth65475 on Tue, 02/20/2024 - 07:37

 من یه یه کارآفرین هستم و به دنبال راه اندازی یه خط تولید جدید هستم. صفحه لیست قیمت زیمنس سایت رها الکتریک به من کمک می‌کنه تا یه برآورد دقیق از هزینه‌های تجهیز خط تولیدم داشته باشم و برنامه‌ریزی دقیقی برای راه اندازی خط تولیدم انجام بدم. لیست قیمت زیمنس

Submitted by seoo on Tue, 02/20/2024 - 11:17

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 alsoYou make so many great points here that I read your article a couple of times. Your views are in accordance with my own for the most part. This is great content for your readers. Flexible Led Screen Adhesive

Submitted by seth65475 on Wed, 02/21/2024 - 02:14

Nice post. I learn some thing very complicated on diverse blogs everyday. It will always be stimulating to learn to read content using their company writers and rehearse something from their site. I’d want to use some with all the content in this little blog regardless of whether you do not mind. Natually I’ll provide link on your own internet blog. Thank you sharing. Tourismus

Submitted by seoo on Thu, 02/22/2024 - 03:10

Superbly written article, if only all bloggers offered the same content as you, the internet would be a far better place..This is such a great resource that you are providing and you give it away for free. I love seeing blog that understand the value of providing a quality resource for free. https://immediatematrix.io/hu/

Submitted by seth65475 on Thu, 02/22/2024 - 10:22

 Most beneficial gentleman speeches and toasts are made to enliven supply accolade up to the wedding couple. Newbie audio system the attention of loud crowds should always think about typically the great norm off presentation, which is their private. best man speaches Fitspresso

Submitted by seoo on Fri, 02/23/2024 - 13:44

I haven’t 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.Thank you because you have been willing to share information with us.     Sora

Submitted by seoo on Sat, 02/24/2024 - 15:47

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...I would like to thank you for the efforts you have made in writing this article. I am hoping the same best work from you in the future as well. Thanks...I really loved reading your blog. It was very well authored and easy to undertand. Unlike additional blogs I have read which are really not tht good. I also found your posts very interesting. In fact after reading, I had to go show it to my friend and he ejoyed it as well!  chinese greenhouse supplier

Submitted by seoo on Mon, 02/26/2024 - 10:16

I would like to thank you for the efforts you have made in writing this article. I am hoping the same best work from you in the future as well. Thanks...Positive site, where did u come up with the information on this posting? I'm pleased I discovered it though, ill be checking back soon to find out what additional posts you include.  Sewage Sludge Treatment

Submitted by seoo on Tue, 02/27/2024 - 11:20

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 also..I love seeing blog that understand the value of providing a quality resource for free.I’ve a undertaking that I am simply now operating on, and I have been at the look out for such info.  hualien hotels taiwan

Submitted by seth65475 on Sat, 03/02/2024 - 05:58

Sustainable Solutions Appliance Experts offer comprehensive repair services tailored to the needs of high-efficiency appliances. Our skilled technicians specialize in diagnosing and resolving complex issues, ensuring optimal performance and energy efficiency. We adhere to eco-conscious practices throughout the repair process, utilizing biodegradable cleaning agents and energy-saving components whenever possible. Whether it's recalibrating electronic controls or replacing worn-out parts, we prioritize sustainable solutions that benefit both your appliances and the environment. Choose Sustainable Solutions Appliance Experts for reliable repairs that embody a commitment to sustainability. Commercial Appliance Repair Services

Submitted by seth65475 on Mon, 03/04/2024 - 03:47

I am frequently to blogging and i also truly appreciate your content. Your content has truly peaks my interest. Let me bookmark your blog and keep checking for first time data. olxtoto

Submitted by seth65475 on Mon, 03/04/2024 - 04:21

A memorable domain name is like a digital storefront that leaves a lasting impression on your potential customers. It is the first thing people see when they come across your website or encounter your brand online. A catchy and relevant domain name can make your business more memorable and increase the chances of customers returning to your site. premium domain names

Submitted by seoo on Tue, 03/05/2024 - 13:21

This is such a great resource that you are providing and you give it away for free. I love seeing blog that understand the value of providing a quality resource for free.I admit, I have not been on this web page in a long time... however it was another joy to see It is such an important topic and ignored by so many, even professionals. I thank you to help making people more aware of possible issues.  proofreader courses

Submitted by seth65475 on Wed, 03/06/2024 - 03:06

Whether you're seeking relief from pain, stress, or insomnia, or simply looking to enhance your overall sense of well-being, we're here to support you on your journey. Our online platform offers a wealth of resources and information to help you navigate the world of cannabis with confidence and clarity. From educational articles and product reviews to dosage guidelines and consumption tips, we're your trusted partner in wellness and exploration, empowering you to make informed choices and discover the benefits of cannabis for yourself. Order THC vape carts and pens online Europe

Submitted by seoo on Wed, 03/06/2024 - 14:12

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 alsoYou make so many great points here that I read your article a couple of times. Your views are in accordance with my own for the most part. This is great content for your readers.    goias x vasco da gama

Submitted by seth65475 on Thu, 03/07/2024 - 00:58

Step into the realm of metal cable glands and unlock a world of unparalleled reliability and performance. Engineered to exceed industry standards, these glands offer a seamless blend of strength and sophistication. Delve into a diverse selection of designs, from traditional to cutting-edge, each tailored to meet your unique requirements. Whether you're navigating complex industrial installations or fine-tuning residential wiring, metal cable glands deliver unmatched durability and peace of mind. Experience the difference that precision engineering makes as you elevate your wiring solutions to new heights of excellence with metal cable glands. metal cable gland

Submitted by seth65475 on Sat, 03/09/2024 - 04:16

Nice post. I understand something much harder on diverse blogs everyday. Most commonly it is stimulating to learn to read content off their writers and employ a little something from their site. I’d opt to use some while using content on my own weblog whether you do not mind. Natually I’ll provide link in your internet blog. Many thanks sharing. https://woori-casinos.com/evolutionlightningcasino/

Submitted by seoo on Sat, 03/09/2024 - 08:36

Hello, this weekend is good for me, since this time i am reading this enormous informative article here at my home.This is my first time i visit here. I found so many interesting stuff in your blog especially its discussion. From the tons of comments on your articles, I guess I am not the only one having all the enjoyment here keep up the good workI wanted to thank you for this great read!! I definitely enjoying every little bit of it I have you bookmarked to check out new stuff you post.Thank you because you have been willing to share information with us. we will always appreciate all you have done here because I know you are very concerned with our.    immediate apex

Submitted by seth65475 on Sun, 03/10/2024 - 04:13

Embark on a journey of digital transformation with our innovative SEO backlink solutions, designed to propel your brand to new heights of visibility and influence. Our strategic approach begins with a deep understanding of your target audience and market dynamics, allowing us to craft a tailored strategy that resonates with your unique value proposition. Whether it's securing high-quality backlinks from authoritative websites or optimizing your content for maximum impact, we leverage our expertise and resources to deliver results that exceed your expectations. With our unwavering dedication to excellence and commitment to your success, we're here to help you navigate the complexities of the digital landscape and emerge as a dominant force in your industry. jasa backlink seo

Submitted by seoo on Mon, 03/11/2024 - 00:02

Awesome article, it was exceptionally helpful! I simply began in this and I'm becoming more acquainted with it better! Cheers, keep doing awesome!This is such a great resource that you are providing and you give it away for free. I love seeing blog that understand the value. Im glad to have found this post as its such an interesting one! I am always on the lookout for quality posts and articles so i suppose im lucky to have found this! I hope you will be adding more in the future...Thanks for taking the time to discuss this, I feel strongly that love and read more on this topic.  KSZ9031RNXIC

Submitted by seth65475 on Tue, 03/12/2024 - 23:32

Nice post. I learn some thing very complicated on diverse blogs everyday. It will always be stimulating to learn to read content using their company writers and rehearse something from their site. I’d want to use some with all the content in this little blog regardless of whether you do not mind. Natually I’ll provide link on your own internet blog. Thank you sharing. Daduslot88

Submitted by seth65475 on Thu, 03/14/2024 - 02:56

The concept of appointment viewing becomes a thing of the past. Say goodbye to rigid TV schedules and hello to on-demand viewing at its finest. With a vast selection of movies, series, and special events available at your fingertips, IPTV lets you watch what you want, when you want, without compromise. From binge-watching marathons to catching up on missed episodes, IPTV empowers you to take control of your viewing experience like never before. iptv pro

Submitted by seoo on Thu, 03/14/2024 - 07:17

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 also..I love seeing blog that understand the value of providing a quality resource for free.I’ve a undertaking that I am simply now operating on, and I have been at the look out for such info.  Aluminum Knob Tap Changer

Submitted by seoo on Sat, 03/16/2024 - 09:24

i never know the use of adobe shadow until i saw this post. thank you for this! this is very helpful.Great job for publishing such a beneficial web site. Your web log isn’t only useful but it is additionally really creative too.I guess I am not the only one having all the enjoyment here keep up the good work  bayern gegen bochum

Submitted by seoo on Sat, 03/16/2024 - 09:28

Wow i can say that this is another great article as expected of this blog.Bookmarked this site..We have sell some products of different custom boxes.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.  daman games

Submitted by seth65475 on Sat, 03/16/2024 - 23:32

Discover the joy of vaping with our handpicked selection of premium vape products, designed to deliver unrivaled performance and flavor. Our range of devices encompasses everything from sleek and discreet pod systems to advanced mods and tanks, ensuring that every vaper can find their perfect match. Delve into our extensive collection of e-liquids, featuring an array of mouthwatering flavors crafted with care to excite your palate and invigorate your senses. With our commitment to quality and customer satisfaction, we strive to be your trusted partner in your vaping journey, offering expert guidance and support to help you explore the world of vaping and find your perfect setup. dmt carts

Submitted by seoo on Tue, 03/19/2024 - 09:22

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.  Swivel Bar Stools With Backs

Submitted by seoo on Wed, 03/20/2024 - 10:39

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.Really a great addition. I have read this marvelous post. Thanks for sharing information about it. I really like that. Thanks so lot for your convene. isfap bursary

Submitted by seth65475 on Thu, 03/21/2024 - 06:09

Unlock the potential of your business environment with our tailored commercial cleaning solutions. We understand that each industry and space has its unique challenges, which is why our approach is as individualized as your business. From managing sensitive environments like medical facilities to restoring the splendor of corporate offices, our adept team crafts bespoke cleaning plans that not only meet but exceed your expectations, fostering an environment of cleanliness, safety, and productivity. commercial cleaning brisbane

Submitted by seoo on Fri, 03/22/2024 - 14:19

I wanted to thank you for this great read!! I definitely enjoying every little bit of it I have you bookmarked to check out new stuff you post.Nice post! This is a very nice blog that I will definitively come back to more times this year! Thanks for informative post.   Galvanized Steel Apple Cabin

Submitted by seoo on Sat, 03/23/2024 - 03:04

Hello, this weekend is good for me, since this time i am reading this enormous informative article here at my home.This is my first time i visit here. I found so many interesting stuff in your blog especially its discussion. From the tons of comments on your articles, I guess I am not the only one having all the enjoyment here keep up the good workI wanted to thank you for this great read!! I definitely enjoying every little bit of it I have you bookmarked to check out new stuff you post.Thank you because you have been willing to share information with us. we will always appreciate all you have done here because I know you are very concerned with our.  구글광고대행

Pages