Thanks Cristian - this has been a great webinar and I am sure I will be referring back to it regularly. The links to the tools from today's lecture will be especially helpful, I'm sure. Well done!
Thanks so much for a fantastic presentation on USB! Christian has crammed a lot information in each "30 minute" segment. I am really glad I signed up for this seminar.
I just wanted to point out the link on this chat page, in the upper right side, under Educational Resources, called "Architecting Options for USB into Your Embedded System Designs" I find it full of usefull information to our topic.
IMHO this has been the best class yet. It combined a clear high-level overview with technical depth and in-the-trenches practical tips. Wow! Thanks, Christian, Jennifer, Digi-Key, and my knowledgeable, generous fellow students!
@All : Don't use commercial USB-to-Serial adaptors. Build a CDC class with ACM subclass. The General Purpose OS will recognize this as a Virtual-COM port. I agree with JimHungen
@Christian: One of the reasons for my device to use USB is that it has to connect to a single board computer that only has USB ports. Would you say that if I make my device look like a COM port, I would be able to use a standard Virtual Com Port driver available from Windows to talk to it?
Thank you for a great week of lectures. We can easily say this is a multi week subject.
It seems like a good way to start is with a Dev Board and the uC vendor's device-side driver to implement the interface. If you have insurmontable problems, try a different uC or different vendor before you commit to a uC and vendor and design your own PDB.
@Kentj : "software is the hardest, most time consuming part".
I totally agree. This is why at Micrium, we work a lot with the semiconductor vendors so that they can standardize their peripherals. The cores have been pretty much standardized with ARM. The next frontier is the peripherals....We have for a good 10-15 years of work ahead of us :-)
@Christian - USB is obviously well thought out and well engineered, but as you say in slide 25, it can be complex and costly. Do you see any kind of simpler serial interface out there that has any chance of ever being commercially sucessful?
Maybe one that uses USB components yet is definitely NOT compliant?
@swanson : All the semiconductor vendor offer good microntrollers wiht USB Host, Device and OTG controllers.
Atmel's implementation of the USB Host controller is 100% OHCI and EHCI compatible. This is, for me, a big advantage. But, I am only a software developper :-)
@Christian. Would you give some company names and maybe even some microcontroller part numbers that we may consider using, to empliment USB into an embedded system.
Another question is: On cable length, at low speed or full speed, can the usb cables be longer than the 5 meter limitation.
Finally I want to say Thankyou for sharing your knowledge with us all this week.
@JimHughen: Silicone manufacturers have Ap-Notes that can be used as a basis for custom designs. I know Microchip has them. I would be shocked if Atmel, Philips and the other suspects did not all have their own, too.
@emberm : It is just an exmaple. I agree that Thumb mode would produce smaller footprint, but the idea here is to realize that a Host stack is a lot bigger than a Device stack and performs many more oeprations.
I am sure there unique devices with USB connectivity that do not fit into the existing types of devices. How are the drivers incorporated into Windows, Mac OS and Linux?
Unless I missed it, not much talk about cabling this week. I'm guessing the cables for USB 3.0 have to be well-shielded, and expensive. Are there any specific compliance issues with cabling we should know about?
Thank you Christian and Jennifer. A great and information filled week. I know the archive will provide the much needed dwell time on this. Happy Friday all.
@Christian. How can we avoid dealing with all the complexity involved while designing in USB into our projects, say at high speed? I've used the FTDI com port chips but I need high speed.
Some of the content from class is starting to appear as a series of articles on the EETimes site (www.eetimes.com). In the Advanced Search, do a search for "Introduction to USB" and click the "Design" Content Type, and Sort By "Most Relevant".
By refining topologies and using new fluid technology, Moog's new peak sine drive controller increases available power without increasing controller volume.
Lantronix Inc. has expanded its line of controllers for sensor networks with the release of a rugged controller that improves management of automation systems used in a number of industries, including manufacturing, oil and gas, and chemicals.
Inspired by the hooks a parasitic worm uses to penetrate its host's intestines, the Karp Lab has invented a flexible adhesive patch covered with microneedles that adheres well to wet, soft tissues, but doesn't cause damage when removed.
From Dell / Intel® New Paradigms in Design Work Scott Hamilton, vertical market strategist for Dell Precision workstations, 5/2/2013 3
Early in my career, I worked as a draftsman and remember the days of drawing on vellum with numbered pencils and Mylar with plastic lead. This was a fun experience in the sense that I ...
I've been using workstations for more than 10 years and love finding ways to get more performance from my system. With demanding professional applications that require more power each ...
A lasting memory from my first job as an engineer in an auto assembly plant is standing on hard concrete at six in the morning, vending-machine coffee clutched in hand, listening to ...
A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is
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