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VxWorks 7

Datalight products have been supported on Wind River’s VxWorks environment for over a decade. As Wind River advances their operating system, Datalight enhances our products to support the latest releases. (Of course we continue to support legacy versions as far back as VxWorks 5.5.) As we finish up our integration into the VxWorks 7.0 environment we thought you might benefit from a heads up on some of the changes in Wind River’s new modular operating system environment.

One of the most significant changes from our perspective is a new distribution model for third party components – the VxWorks 7 Marketplace. The idea, according to Wind River spokesmen, is to provide their customers with an “Internet of Things” approach, a one-stop shop for in-house and OEM additions to the environment. As with many marketplaces in the physical world, this shop opened before all the shelves were complete. We expect the required changes to the Wind River build process (since VxWorks 7.0 debuted earlier this year) to be delivered at the same time as Datalight products become available in the Marketplace through a build package dependency, which should be seamless to our customers. If you need access to FlashFX Tera or Reliance Nitro for VxWorks 7 prior to the Marketplace availability, you can contact us and we’ll set you up with an independent download.

In VxWorks 7, the Datalight product build is considerably simpler. All source editing, building and debugging can be done in the VxWorks IDE. Processor build and environment are based on the BSP, and that information is now delivered to the installed package. The software developer would still want to customize the configuration files for Reliance Nitro and FlashFX Tera, especially when selecting a NAND flash part and controller. As always, unlocking the full feature set of Datalight products will still be done via a license key obtained from Datalight.

One welcome change – the FlashFX Tera build will be delivered with the NAND flash simulation project by default. Customers can now bring up the product with a block device immediately, which should allow faster integration and scalability.

In summation, we are pretty excited about this new Wind River release. The protected boot, signed images and other security options are exactly where embedded devices need to be. Modularizing the kernel means fewer “complete system” upgrades and more flexibility for OEMs and BSPs. We can’t wait for the Marketplace to go live in Q4 of this year.

Read more about Datalight's VxWorks solutions

Thom Denholm | September 4, 2014 | RTOS | Leave a comment

64 Bit Embedded

Desktop processors are universally available in 64 bit varieties, resulting in higher and faster processing power. Another major advantage of 64 bit processors include direct addressing of huge amounts of RAM. In the embedded realm, the first hardware architecture to provide 64 bit was the x86-64, provided by Intel and AMD. Later targets included MIPS and ARM.

According to market research firm Embedded Market Forecasters, use of 64-bit processors in embedded designs is increasing and they are now used in roughly 20% of projects. Embedded RTOSes that support 64 bit targets include Microsoft’s Windows Embedded Compact 7 (and 2013), Wind River’s VxWorks 6.9, Linux and of course Android. The latter environment drove much of Datalight’s 64 bit roadmap, as Google required a 64 bit development system to support Android 2.3 and above – even on 32 bit targets.

One drawback to using these faster chips is that 64 bit access requires larger pointers – which doubles the data and stack space requirements. This cost is strongly felt in embedded designs, where RAM can be at a premium. Conditional compilation was a required solution here.

Most of the changes required for 64-bit support were fairly standard, although extensive. From a technical standpoint, these processors have a new mode of operation – long mode. In this mode, 64 bit applications and operating systems can be used, along with a 32 bit compatibility mode. Also available is legacy mode, which maintains 100% compatibility for 32 bit applications and operating systems.

Datalight products released with full 64 bit support include Reliance Nitro, FlashFX Tera, FlashFXe, and our Windows desktop File System Exchangeability driver for Reliance Nitro.

Thom Denholm | June 30, 2014 | Android, Datalight Products, Flash File System, Flash Memory Manager, Performance | Leave a comment

Flash Friendly File Systems

Earlier this year I had an opportunity to speak at Embedded World 2014 on the topic of Flash Friendly File Systems. Flash media is growing by leaps and bounds, and the chosen file system is a key component. For this paper, I drew on both my own development and support experience at Datalight and the experience of our staff.

The paper we put together describes the important aspects to be considered before selecting a file system which will treat the flash media in the best possible manner. We looked at both performance and endurance, focusing on the reliability and power use needed by today’s embedded designs.

Based on the response from the Embedded World audience, we realized that more depth on this topic would be helpful. Returning from Germany, we edited and updated the paper with the very latest performance data. F2FS is beginning to mature as a product – though not all the tools are yet functional – which allowed us to include it in all of the measurements this time around.

The results of these edits are the paper linked below. If you want to know more about this topic, please feel free to contact me.

Flash Friendly File Systems white paper

Thom Denholm | May 23, 2014 | Extended Flash Life, Flash File System, Flash Industry Info, Flash Memory, Performance, Reliability | Leave a comment

Support: When You Need it You Need it Big Time!

I’ve always carefully considered which cell phone I use. Having had Datalight software in lots of cell phones has given me an extra affinity for them. I started with a Microsoft Windows-based phone long before any one called them a “Smart Phone”. I know the Apple iPhone is the darling of the market and has been since Steve Jobs announced “an iPod, an Internet device, a Phone…an iPod, and Internet device…”, but not being one to follow the crowd, I’ve never owned an iPhone.

Last fall, my Android-based Motorola Atrix phone just stopped working. I could not bring up my calendar, my email, nothing. It just died. I’d had it for about a year and knew it was time for a new one. I had an AT&T phone insurance plan so I went to AT&T and asked for a new phone. Given that I’d really enjoyed my Atrix and it was an Android phone, I opted to stick with Android.

AT&T provided an Android phone, but it was NOTHING compared to the Motorola Atrix. The Atrix delivered a great in car experience. When it was plugged into the car adapter its functionality changed from Smart Phone mode to a hands free GPS and music player and it read texts to me as they arrived – overall a great when driving-user experience! With the AT&T replacement phone I could at least make a phone call and get email, but nothing more! It sucked.

After taking some time to evaluate my options, I finally decided on the new Google Nexus 5 because Google, the makers of Android, and recent purchaser of Motorola Mobility (the Cell phone division), surely would make a great Android phone. While not having as good a car experience as the Atrix, the Nexus 5 was a nice phone.

I use my phone as my email, calendar, web browser, and communication device, both personal & corporate. Look up a local place to eat, use the GPS to find it and even record notes when a laptop is too clumsy. My life is on my phone!

Recently I was out of the country on holiday, in and out of cell and Wifi coverage, so the phone had data and then did not. Not a real problem for vacation, connected but not too connected. On Friday the phone stopped receiving email. I wasn’t too alarmed, figuring it would come back. Saturday morning I arrived back in the country, and still no email, or web. Wow, this is odd. Turn on airplane mode, turn off airplane mode… re-boot, re-boot, re-boot – still no data getting to my phone. Back home late Monday, I went into an AT&T store to get it fixed. They change the SIM card, monkey with it. Get an AT&T person on the line who plays with the network, trying to give me data back. All to no avail. AT&T says “It’s not the network. The phone is broken.” Grrrrrrrrrrrrrrrrrrrrrrrrr. NOT what I want to hear!

I get on Google website for Nexus 5 and find a phone number to call. I call and speak with Marc. He’s a friendly guy that recommends I re-boot, put it on airplane mode and take it off. Get a new SIM card, update the APN number (all stuff either I did or AT&T did for me when I was in the store). Marc says that he does not believe that Google will replace the phone if it’s only a data problem. I get real clear with Marc, if the data does not work, this phone is worthless to me! “Yes, I understand” he say, “I’ll check into it and see what I can do here at Google.”

As the call was ending Marc says, “There will be a 2 minute survey at the end of this call. Please take time to respond to this survey if you can. They ask if the representative was helpful.”

Did he take ownership of my problem?    Fully fixed my problem?   Marc was nice enough, but I was still frustrated!

Marc did follow up with an email that said do all the stuff he’d told me about on the phone. At the end of the email it says “If this does not fully resolve your problem let us know”. I fire back an email immediately. And get asked to take yet another survey!

Two companies, AT&T and Google, neither really took care of the issue but they sure did ask me a bunch if I was satisfied.

All this just reminds me: how proud I am of Datalight’s support. Our team does take responsibility for the customer’s problem. They often spend time investigating issues with the customer regardless of the time of day, regardless even of the likelihood of it being a problem with our software. Whether it’s a 6:00 AM call with Germany or an 11:00 PM call with Japan, whether it’s a hardware problem or not they are on it. I only wish they could fix my phone!

Learn more about Datalight support

RoySherrill | April 29, 2014 | Flash Industry Info | Leave a comment

New Datalight Whitepaper:A Study of the Impact of File System Selection on Life Expectancy of Solid State Storage

In 1965, Gordon Moore predicted that transistor density would double every two years or so. For the most part, this observation has held true for 50 years and has become well known as “Moore’s Law.” This characteristic is a fundamental driving force behind the technological advances which have led to computers continually becoming faster, smaller, cheaper, and more reliable. Almost every aspect of technology has benefited from this characteristic – almost. Solid state memory is one area where there is a major dichotomy. Moore’s Law has resulted in smaller and cheaper storage, yet the driving need for more storage capacity has driven manufacturers to sacrifice reliability and in some cases performance.

The purpose for this paper is to discuss the characteristics of solid state memory, specifically as they relate to media life (endurance) and performance. It will show how alternative file systems and file system configurations can significantly improve both media life and performance in a Linux/Android environment.

Click to access the whitepaper

Thom Denholm | April 10, 2014 | Datalight Products, Flash File System, Flash Industry Info, Flash Memory | Leave a comment

Embedded World 2014

Datalight booth

General impressions
The weather in Nuremberg was absolutely fantastic – it was very hard to go indoors to Embedded World. That said, there was a definite reward for doing so – technology that has gotten smaller, faster, and uses less power. In my estimation, the crowds were about the same as 2013. Visitors to the Datalight booth covered an intercontinental spectrum – from Beijing to Benelux to Boise.

Intel's IOTFreescal's IOT

Internet of Things
Of course, the big topic at this years show was the Internet of Things. Wind River announced that VxWorks 7 would enable it, and we saw IoT branded on every third booth. What does it mean to Datalight? The Internet of Things is about distributed control and decision – device feedback utilized properly. Datalight software can provide solid feedback from the block device and file system level, enabling best decisions about device lifetime and performance options, if not actual control of the higher level. More on this in the near future.

Spansion Instrument ClusterKinetis Simulator

Where the Internet of Things will have its first big impact is likely to be cars, and this show had the usual booths of simulators, dash displays and new ideas. Atemel’s curvy new concept for the center console was quite interesting to see.

Technical Talk and Twitter
Datalight accomplished two new things at this years show – I spoke in the technical conference about Flash Friendly File Systems, and we also tweeted frequently. Our presentation was a solid success, and you can read the original paper below. As for twitter (@DatalightInc), we tweeted about other Logic partners, Intel, WindRiver, and others – the live response came from Atmel. Outside of hobbyists, do embedded engineers participate in Twitter? We aren’t seeing it yet. I am certainly interested in your comments, either here or through twitter…

Thom Denholm | March 11, 2014 | Automotive, Flash File System | 2 Comments

Congratulations Seattle Seahawks

Congratulations to the NFL Superbowl Champion Seattle Seahawks. They have found success the same way Datalight has – through outstanding teamwork.

Seattle Seahawks Defense

Thom Denholm | February 2, 2014 | Uncategorized | Leave a comment

File System Sculpting

For many embedded operating systems, the default file system is the only choice available. Sometimes a few customization options exist, and usually only at mount time. When using Linux as an embedded OS, there are a few more customization options and the source is available, but it is rarely easy to understand and modify. Reliance Nitro is an embedded file system that can be sculpted to fit where you need it.

Datalight has a strong history of customization. Our ROM-DOS operating system was designed to offer a variety of choices to the device designer. FAT32 and Long Filename Support were both optionally available, together or separate. Internal files, buffers and other structures could also be customized at will – without losing complete compatibility with MS-DOS.

This same strength is available in both our FlashFX and Reliance families of products. The latter offers many options for customization, from cache, buffers and debug mode to filename and pathname length and character sets. Our reliability through fully configurable Transaction Points is unlike any other file system in the industry.

One recent customer came to us with a request for our fantastic reliability – in under 60k of RAM. Datalight’s Reliance Nitro code was trimmed down to remove multiple threads, multiple volumes and unnecessary API calls. International character support and the idea of a current working directory were also removed. The end result provided perfect reliability in just 55k.

These and many other customization options are available to our customers, either on their own (with the friendly assistance of Datalight Support) or through a Datalight services project. When you take a look at our source code, you will find the Operating System and Block Device interfaces well documented and flexible. The Reliance Nitro source is available for free evaluation in your design today.

Learn More About Datalight Services

Thom Denholm | January 8, 2014 | Datalight Products, Flash File System | Leave a comment

FlashFX Tera Feature Highlight: The Error Policy Manager

Datalight’s FlashFX Tera is quite similar in structure to its predecessor, FlashFX Pro, but there have been some features that have evolved from our experience in working with NAND flash over the years that are reflected in some of the new features you will now find in our FlashFX Tera product, and the Error Policy Manager is one of them.

FlashFX Pro was originally developed in the day where NAND flash was SLC (Single-Level Cell), and required 2-bit detect, single bit correct ECCs. The error rates on these types of flash devices were much lower when compared to today’s newer NAND flash memory – both newer, lower lithography SLC flash designs that require higher levels of ECCs than their predecessors, and the introduction of MLC (Multi-Level Cell) NAND flash devices, in which multi-bit errors can be seen as part of normal device operation.

When single bit errors occurred in FlashFX Pro, these errors were eventually “scrubbed” over time as part of wear leveling. With newer, more error-prone NAND flash, a more active role needs to be taken.

The usual recommendation for scrubbing a block on NAND flash is to read the data, correct any bit errors using Error Correcting Codes (ECC), and then write the corrected data to an unused block. The existing block is then marked for erasure and reuse. Erasure clears any charge leakage or disturbance, which can make the cell appear to be inconsistently programmed.

In modern MLC NAND flash, errors occur more frequently. Partial programming and associated pages can also cause errors to occur. The severity of an error (and the recommended response) can also vary among manufacturers. FlashFX Tera needed some feature which would allow customization of how these different levels of errors were handled for different devices.

FlashFX Tera introduced the Error Policy Manager, a layer which can react to bit errors during a read and decide (based on the configured Error Policy) whether or not a page has reached the threshold to require action “soon” or “now”. Other functions that the Error Policy Manager can employ in addition to scrubbing include Relocate the Data, Retire the Block and Abandon Operations.

Error Policies can be specified for any number of bits, from zero to the maximum supported by the media and NAND controller. This flexibility allows the device designer to completely control how their software works with media from any NAND flash vendor. Error handling requirements can easily be translated from the design document into the software stack.

Datalight’s Error Policy Manager works equally well with new higher ECC requirement SLC NAND flash. At present, the Error Policy Manager requires the Datalight VBF layer be present on the media. Correctable errors in any NAND flash exempted from this coverage must currently be handled by the OS read routines.

Learn more about FlashFX Tera

Thom Denholm | December 13, 2013 | Datalight Products, Extended Flash Life, Flash Memory, Flash Memory Manager, Reliability | Leave a comment

2013 Embedded Tech Favorites

Wrapping up another busy development year at Datalight, it occurs to us that as much as we love helping our customers with software to handle their critical data needs on things like smart meters, medical infusion pumps, factory controllers, automobile infotainment systems and first responder radios, there are some cool embedded technologies we’d like to have in our personal Christmas stockings in 2013.

Here is a list of some of our favorite uses of embedded tech for consumers in 2013:

Misfit Shine ($119.95): The recent push for devices to help us track our activity and improve our fitness has created a flood of embedded technology hitting the market helping us accomplish all our wellness goals. Started in 2011 by the creators of a blood glucose monitoring system that works with iOS devices, Misfit Wearables is not just focused on fitness but wants their devices to become a part of your wardrobe and a must have accessory. It’s easy to see on Kerri McConnell, VP of Sales and Marketing, “I love mine. It’s the most elegant tracker I’ve ever used and combines sophisticated function with understated form”. The Shine, launched in 2013, can not only be worn as the traditional bracelet, but also as a broach, necklace or even attached to clothing with a hidden magnet.

Chromecast ($35.00): This July, Google hit the market with Chromecast, turning any TV into a streaming device, making Chromecast a huge hit on the market and an interesting choice for users who needed to update their technology at home. As TV and movie watching turns to the cloud, transferring that data to your older TV sets hasn’t always been easy. Rachel Householder, Senior Customer Care Administrator, uses hers to stream music, “We’ll create a YouTube playlist and use Chromecast to broadcast it over our home theater system during parties giving us a visual as well as sound. It’s a great addition to the festivities!” Chromecast allows users to communicate from multiple platforms, and now using multiple services like Hulu, VEVO and Redbox Instant. Chromecast is compatible with WiFi-enabled Android 2.3+ smartphones and tablets; iOS 6.0+ iPhones, iPads, and iPods; Chrome for Mac® and Chrome for Windows®; and Chromebook Pixel. Shipping for less than $35 dollars from some providers, Chromecast is also a very affordable gadget that embraces all that embedded technology can provide.

TiVo Roamio ($199.99 to $599.99): When you can’t be there to watch your favorite TV shows (or in Tony’s case, the Seahawks games), the TiVo Roamio has you covered! TiVo has created a device released in August of 2013 that now allows you to have your shows and recordings wherever you go. Currently supporting three different models, the TiVo Roamio has all sort of embedded functionality for the user, connecting to Wi-Fi, built in music servers, photos and home movies. The TiVo Roamio allows you to really have your TV shows anywhere so you don’t even have to think about missing your favorite shows and episodes! To quote our Customer Support and Quality Services Architect, Tony Questad, “It’s really slick!” With models supporting up to 3TB of data, consistent embedded memory management is a must!

iSmartAlarm ($199 and up): Speaking of things funded by Indiegogo, this company that recently raised money through the crowd-funding site is helping to revolutionize the home security market, moving it from a service based (~$ 30 / month) model where the hardware is largely incidental to a hardware- and smartphone app-centric solution. With the devices from iSmartAlarm installed on doors, windows, appliances and even pets the user’s smart phone can be notified if an unexpected event occurs then get a view of what’s happening using installed camera and take some simple actions with their smartphone. Datalight CEO, Roy Sherrill has this on his Christmas list.

Google Glass (pricing not yet available): You can’t talk about embedded tech for the consumer in 2013 without talking about the immersive experience that is Google Glass. Google had a great year promoting embedded technology and Google Glass is a great indicator of that. Google Glass is a wearable headset that communicates with your voice and gestures to capture all that you see around and in front of you. Google glass can then transmit or store that data to allow for your access later. The interactive aspect of Google Glass allows you to experience an amplified version of your life, such as directions on a walking path, recipe instructions while you cook and your hands are dirty and even added content when you watch movies, see music concerts or go to museums. Google is currently testing all of the technology on their “explorers” with plans to release the technology as early as Q1 2014. Although we don’t have complete specs on the Google glass, we do know that they are running 12 GB of usable memory, synced with Google cloud storage and 16 GB of Flash memory total. It’s amazing to know that embedded technology has allowed us to put all that content in something so small!

Don’t forget about all the ways embedded technology can help shape our lives in other ways. Diagnostic medical equipment, onboard electronics for automobiles, and manufacturing equipment all use embedded technology, too, creating a smarter and more efficient world that we live in.

Embedded technology is sure to change the shape of the tech market well into and beyond 2014. What are you most excited for next year? What couldn’t you live without in 2013? Let us know in the comments!

Rachel Householder | December 12, 2013 | Flash Industry Info | Leave a comment