I have had issues with files being saved to locations that I (rushing and not paying attention to) have had trouble finding again. Minor hassle, but it does cost time.
I currently use Win-AVR for my AVR development. Would really like to see more tools aimed at Mac OS X though. Seems many engineering companies are allowing engineers to switch.
Q: I have a question about third party and programmer tools (jtag programmers) . how can I make sure those tools work with third party development tools? I used link programmer ATMEL for AT9(ARM9) and didn't work with compiler (KEIL ) . how can we taker over this issues?
A: The 3rd-party software suppliers want to control the hardware so they can update firmware and handle the PC-based drivers and JTAG connections. That makes sense and simplifies any "he-said she-said" situations where one company blames another for problems: "It's your pod that's the problem. No, it's your tools that cause the problem, etc..."
As I noted in the seminar, avoid programming and debugging pods from Asia. I have read posts that describe compatibility problems with many of those pods. Do you want to stake your career on a few-hundred-dollar difference between a reputable vendor known in the industry and a cheap product from Asia you uncovered on ebay?
Also, JTAG is not always JTAG between manufacturers. The IEEE 1149 JTAG standard uses signals for boundary-scan tests and in-circuit programming, but the MCU JTAG pods might not adhere to this standard. Don't assume because a pod has a "JTAG" interface it will work with all other JTAG devices.
Q: Is model creation in the Maplesoft easy? Should you decide algorithm when you create model?
A: Maplesoft has some videos on its site that will answer your questions better than I can in a short answer at the end of a long day: http://www.maplesoft.com/products/maplesim/index.aspx. Watch the short video. If you're serious, request a live demonstration.
@khan38 thanks. :) I guess autogenerated code would hardly be readable. This is not a nice thing.
franchzillaIRON
Wednesday January 18, 2012 2:15:53 PM
I guess this slide answers part of my question. But is the code generated good? Or does it lack performance?
franchzillaIRON
Wednesday January 18, 2012 2:15:50 PM
@franchzilla There is a way, I have done it once. but the code is almost undreadable.
A: Contact The Mathworks, National Instruments, and Maplesoft and ask for the C code for the same simple function. That will help you determine the "quality" of the code produced.
Q: Jon can you recommend a path/tool for the lone engineer working from a home lab?
A: It depends on what you want to do, but to start, the Arduino Uno, Digilent chipKIT Uno32, ARM mbed, and Parallax BASIC Stamp provide good ways to get a quick start without the headaches of configuring compilers, worrying about libraries, and so on. You can get a good start for under $150. Note the Parallax BASIC Stamps use the BASIC language, but that shouldn't discourage you from taking that route. Parallax has many good books, too. I hope this helps.
Q: @jon: C vs. ASM: Given that in both cases you're working close to the hardware, I wonder how reusable is embedded C across MCU families, say from MSP430 to PIC?
A: Good question. There's no compatibility between hardware functions, but if you have an algorithm that simply processes data, you can likely move the code between processors. Lots of "gotcahs," though because, say one MCU has multiply hardware and the new target does not. You have a line of code:
test = alpha * temperature;
The new compiler will handle this situationus but you'll end up with more code and a longer processing time without the multiply hardware. It's not easy.
A: I'm not sure whether you've asked me or the other "chatters" in general. Anyway, no, I have not used UML because I never got involved with a project large enough to justify using or learning it. See my answer below, too.
Q: Jon, in all fairness to all the different techniques and tools, isn't it fair to say that all this these different approches can and should be used at different phases of the project?
A: Good point! It depends on the people you work with, company policies about project development, budget, and so on. Some people will use model-based design only to tune algorithms and then create some C code they tune by hand. For others, they have a project flow that uses state-machine notations and separate teams use a seat-of-the-pants method. I just want people to know what's out there so they can investigate and find out what could work for them.
Q: Mrs. Z... How reluctant of a beginner are you to get into C? I think that the K&R is the best C book ever, since it is concise, but it is so concise that it can be hard for non-programers/non-engineers to devour.
A: Try "Practical C Programming," by Steve Oualline, published by O'Reilly Media.
Q: What learning tool, for us non-programmer (reluctant beginners) best addresses the differences and teaching of the MANY different addressing modes. Decision and control, interupt and pin handling not so bad ... but the addressing mechanisms are terribly confusing.
A: Addressing can get complicated in assembly language. It gets easier in C with the uses of pointers and pointer addresses. It's something you just have to experiment with and see the results. Take a look at the book, "Mastering C Pointers," by Robert J. Traister. It's available in a 2nd edition and I think you'll find it helpful. I still have the 1st edition in my library. You might find copies of the 1st edition available from second-hand book dealers on the Internet.
Q: If using PICs and assembly only - any advantage going to MPLAB-X over MPLAB-IDE?
A: I haven't used all of the features of MPLAB X and no longer program in assembly language. But MPLAB X provides a nicer interface because it uses a standard Netbeans framework, it will be easy to update and for developers to extend it. Also, Microchip will not support new chips with older versions of MPLAB, so the "X" version is the way to go now so you're a step ahead.
A: Better for what? Each has a place. Assembly language works with the hardware and gives you complete control over an MCU. But it's easy to get into trouble and it has a steep learning curve. If you want to move up a bit from the hardware and let C do a lot of the work, than go that route. Years ago I programmed in assembly language and loved it because I could use any instruction and do anything I wanted with a processor. But today I would not want to try assembly language on an ARM Cortex-M3 MCU.
Q: Jon, I don't know you're planning to talk about his in the real-time module. Question is what doyou think of QNX Momentics to develop C/C+ code for even basic MCU software?
A: I'm not familiar with the QNX Momentics software and the basic info doesn't explicitly say what ARM family the Momentics tools work with. Perhaps someone else can offer more information. Sorry I can't be of more help.
Q: Jon, I'm in that problem now with PIC24... and MPLAB X appears to have no chip configuragion Wizard.
A: I talked with people at Microchip about a peripheral-device wizard and they said they do not have one. That's a shame because it can take a while to become familiar with the registers and bits needed to control a device. Microchip has good documentation and example code, but it's behind the times without a wizard. Maybe customers can apply some pressure.
A: Years ago microprocessor manufacturers created special (expensive) bonded-out chips that brought out signals not present at pins on the normal, commercial processors. The tool suppliers bought those chips and put them in pods that connected to a host computer and to the microprocessor socket on a board. The special chip would act like an MCU but also give the software tools extra information and control over the chip. In essence, it would "emulate" the chip that would eventually go in the socket. These days MCUs include debug capabilities, so emulator "pods" have disappeared. Today's pods provide the debug connections for testing software and loading flash memory with code and data from a host PC. The name "emulator" continues however, even though these pods no longer emulate a processor. It's a case of an obsolete name sticking to a product. Much like saying, "dial 212-555-0000." There are no longer dials on phones.
Q: I worked for a while at an iOS development company, and the standard there was to eliminate comments...drove me crazy...never got a good reason why.
A: Maybe next your old employer would have eliminated programmers. Go figure. Who knows why companies do things.
Q: Do most/all of the debug tools have a means to monitor MCU stack usage, stack overflows, max stack usage, etc.?
A: Well, you get what you pay for. The more-expensive tools include those types of capabilities, but don't expect them in every free or low-cost software package. You'll have to check the specs for the tools you might consider to ensure they do what you want. I doubt debuggers monitor the stack in real time, though.
To estimate stack use, allocate a large amount of memory for the stack and fill it all with the same value, sau 0x55. After you run your program, look at the stack area and determine the extent of changes from 0x55. That will give you a first approximation of the amount of memory the stack used for that version of your code. I would add quite a bit of memory, though, to be on the safe side. I hope that helps.
Q: I am designing a microcontroller for a space application. Can you suggest a reference on how to correct (SCRUB) memory to remove errors caused by radiation.
A: You'll need radiation-hardened memories and a rad-hardened MCU. Check with aerospace companies to find one that manufactures such devices. They are expensive due to a limited market and special processing needed to harden them against radiation. AMSAT has placed many small satellites into low-earth orbits, so you might find MCU-related info on the amsat.org site.
Q: what is the benefit to use RTOS such as uC/OS II or III? Is it more complecate or overburden to make codes for small embedded applications? If so, what is the measure or reference to use or not an RTOS to develop an application? For e.g. code size or complexity or any other reasons to be developed application?
A: The complexity of a project and the number of "threads" or processes you need to run determine whether or not to use an OS or an RTOS. Ask Jack Gannsle this question in his sessions the week of January 29th. He can add some insight into when to use an OS. In the meantime, here's a good paper: http://www.netburner.com/downloads/embedded_projects/RtosVsInfiniteLoop.pdf. I hope this helps.
Q: What are the chances that we burn the chips on dev boards becos of static in this winter season? Not everybody at home/hobbyists wear all the anti static gaurds.. right?
A: Good question! I always work on a static-dissipating mat on my lab bench and have a wrist strap with a solid ground connection. My mat is bright green. 3M sells many desktop mats such as this one: TM2436L1BL-L. You can find them from several suppliers. I live in Utah and it gets very dry during the winter--lots of static sparks, so a mat is mandatory. I recomment such a mat to everyone who works on electronic hardware. Why risk killing a project?
Q: Jon What are your thoughts on the Ti Grace software?
A: I like it. It's specific to the TI MSP430 family and doesn't cover all of the '430 chips, but I'd bet TI will extend it to other MCUs. It just makes a lot of sense and it helps get programmers over the hurdle of setting up peripherals and I/O ports. That's no small matter for some MCUs.
See what you mean. VMs run in isolated level and nothing should just come out. I didn'thave any issues on this way but as you said you never know. Backups, backups ..
You're missing the point. Even if there were some solid ant-virus software for the Mac (maybe there is, maybe there isn't), what is really needed here is a comprehensive anti-virus solution that operates between both platforms, to make sure a virus can't get in on one side (in my example, the Mac side), and execute on the other.
i use antivirus SW on VMs as well. Then is the same as to have standalone PC .. virus can kill it too. But is quite easy to backup whole VM image and revert to one of old ones if something happens.
The problem when you do that, though, is that if your Mac OS gets a virus, it can be executed on Windows. Which also may (likely will) contaminate your Mac installation. It's not really safe, gregorf.
PC vs Mac .. workaround is to use VirtualBox or similar SW, install extra Win XP as VM, install needed IDE tools, bridge USB port over and things works. I used to evaluate some MSPs on this way on PC box but there should nto be any diff on Mac. There are just probably small drawbacks (performance, latency, ...) but is usefull to some level.
Alaskaman66, I would generally avoid trying to detect hardware failure with software. Use hardware to detect a hardware failure, and have that communicate with the microcontroller.
Alaskaman66, the trickier part is isolating the potential short from the CPU so the CPU doesn't fail. You need to be able to safely detect the short. At that point, you probably want an interrupt to go off, to indicate that a short has occurred, and the circuit is no longer valid for execution.
@Tenacious Techhunter - I went to the Clang site yesterday after someone (you?) mentioned it. Looks attractive. It will go onto my IDE DVD for future consideration.
What are the chances that we burn the chips on dev boards becos of static in this winter season? Not everybody at home/hobbyists wear all the anti static gaurds.. right?
How I would have done the HP job better is to use pulse width modulation to control the heating element. When the chip halts, the pulse width should stop, and so the heating element should turn off.
Techhunter: here's another example I wish to try sometime..Build a glow plug controller for a diesel engine. The MCU will drive a solid state relay. If the relay fails shorted, could one devise a way to inform the driver with appropriate code and sensors?
Q: @Jon - worth a mention to remind folks to check mfg errata. it can happen that code can break due to a mfgr issue that might follow a particular die rev.
A: Good point. I know TI had some problems with the Code Composer Studio debug. The breakpoints did not always stop at the proper place. Since resolved, I think.
For people interested in an all-in-one IDE, Clang is an LLVM based GCC replacement. It can support multiple chip architectures with the same "GCC", and thus, may become the basis of an all-encompassing IDE in the future.
what is the benefit to use RTOS such as uC/OS II or III? Is it more complecate or overburden to make codes for small embedded applications? If so, what is the measure or reference to use or not an RTOS to develop an application? For e.g. code size or complexity or any other reasons to be developed application?
Q: @Jon - re: IDE's ... too bad some genius programmer hasn't produced an open source IDE that encompasses most of the major families, PIC, ARM, AVR, TI's chips.
OTOH, I would guess setting it up would be as tedious as setting up Eclipse for GCC Arms.
kenstan, use the most convenient language that suits your application on the chip you need to use. C will allow you a wider range of chips, but if you are only interested in big chips like ARM CPUs, you might as well use c plus plus, if you prefer it.
@Jon - re: IDE's ... too bad some genius programmer hasn't produced an open source IDE that encompasses most of the major families, PIC, ARM, AVR, TI's chips.
OTOH, I would guess setting it up would be as tedious as setting up Eclipse for GCC Arms.
Techhunter: Constrain the output perhaps with a watchdog timer? Certainly I would include a thermal fuse in the design an an absolute backup, and write code to announce if it opened.
Q: What would be the best *free* / really cheap software & hardware for me to gain some skills at home? (I'm not a programmer type, trying to expand the horizons)
A: There are some online C compilers so you can try some code and see what happens.
Q: @Jon - Your specific recommendations for IDE's (by chip mfg & chip family)? Is a place to see comparisons? I have a DVD full of various free and eval copies of IDE's - in addition to the Visual Studio versions I use in the day job.
A: I don't know of any comparison sites. Usually people choose the MCU first and go with the tools available for it rather than vice versa.
Q: Can anyone recommend a good opensource IDE for PIC?
A: If you mean the creator of the IDE used open-source, I believe the MPLAB X uses NetBeans, so you can easily create add-ons. If you mean an IDE for open-source development tools for a PIC, visit: http://gputils.sourceforge.net/.
Alaskaman66, it is better to safely constrain the output than to try and figure out all the inputs. Of course, the HP example may be more about the chip being shorted out, which means the board level design may be partly to blame. And if that was the case, the rest of the circuit should have cut the heating on account of no CPU response. I suspect that unit had more problems than just corroded keys!
Q: Question on software design: what about dealing with failure modes? I remember reading HP built a labware heater that could catch fire. Turned out the keypad had corroded so two keys were activated at once while the unit was in the heating mode. The progran simply halted.
A: You strive to prevent that sort of action. Always assume someone will do something wrong, press two keys at a time, not read a display message, etc. You can't prevent every type of failure, though. Obviously the heater should have had a simple overheat sensor that would kill power if it ran "too hot" for a period of, say 1 minute.
A good tutorial for MSP430 is here: http://mspsci.blogspot.com/ This goes into many of the features of the MSP430s included with the Launchpad and is very thorough.
Alaskaman66, it depends on the simulator, and your settings for it, though I have little experience with them. Ultimately, you may be able to get your simulator to run in real time if you sacrifice some features. But more importantly is to be able to debug from the boards.
Question on software design: what about dealing with failure modes? I remember reading HP built a labware heater that could catch fire. Turned out the keypad had corroded so two keys were activated at once while the unit was in the heating mode. The progran simply halted.
Q: It's been a LONG time since I had a C+ class... Any basic tutorials you would recommend?
A: I'm not a C programmer, so I can't relate any experience, I'd check C books on Amazon and find one that got good reviews. Read the reviews, too. Google has some courses of its own and I'd bet you can find other online courses, too. Let me know how you make out.
Alaskaman66, reentrant code means that, when that piece of code gets interrupted, it will resume correctly after the interrupt. You have to build your code very carefully to make that happen!
Also, getting additional chips to use with the launchpad can allow use of different peripherals than are included in the kit. (The new launchpads are shipping with 20 pin chips that are larger than the original 14s)
Thanks, Techhunter. I've been thinking that code emulators may not run a t real world speeds, especially if you have an older computer. Then the application fails to work properly in the real world.
I am designing a microcontroller for a space application. Can you suggest a reference on how to correct (SCRUB) memory to remove errors caused by radiation.
Q: Jon, would you consider an application that requires real time response in a fast changing environment to need more advanced software than some application that simply waits for an input and performs an output - like enabling a heater? Especially if the real time application could outpace the MCU?
A: Yes, you might need a small scheduler to handle the tasks. If the tasks outpace an MCU, you'll need a faster MCU or perhaps you can divide tasks between two MCUs and have a simple communication link (UART) transfer information between them. There are some small operating systems available for MCUs, so if you need more info, a Google search should find more information for you.
Q: there are a lot of good information in the chat session. Is there a way that we can access these chat session later? Are they made available along with the previous presentation?
A: As far as I know, the chat session is part of the archived information, although I will not monitor it often.
Most of the tools have some kind of trial/demo versions that work except for limitted code size/ or devices supported. That is a good way to see what is available.
Alaskaman66, with that sort of real-time, your biggest problems may be how reentrant your code is... which is more a matter of how intelligently you built the code, than how advanced it is.
Mac tools for AVR are hard to install/compile. Same with ARM tools, though there is the occasional IDE that may suit your needs, like YAGARTO or mbed. I'm using MPLAB X at the moment.
Jon, would you consider an application that requires real time response in a fast changing environment to need more advanced software than some application that simply waits for an input and performs an output - like enabling a heater? Especially if the real time application could outpace the MCU?
Q: What kind of tools / softwares you recommend for GUI development forr Embedded systems?
A: Some of the MCU development tools include a GUI package. It can be a challenge, though, because much depends on the display you use--size of the display, color or b/w, necessary graphics and fonts, etc. You might take a look at the tools from Amulet that help you create a GUI on an LCD. Good for prototypes and short runs. Amulet has goof tools for GUI creation on its LCDs.
And if you do continue to more advanced things the code ports to higher MSP devices (but you have to buy a different programmer). That is what I did and It was a great way to get my feet wet.
@Jon - Your specific recommendations for IDE's (by chip mfg & chip family)? Is a place to see comparisons? I have a DVD full of various free and eval copies of IDE's - in addition to the Visual Studio versions I use in the day job.
Most of my experience is with AVR. If you're designing the hardware and software (e.g., breadboarding something at home), that's a good family to start with. The development environment is free and the chips are as cheap and varied as others.
I would like to suggest the following changes to the course:
1) Position slide page numbers so that they can be seen.
2) Add hyperlinks to referenced web sites and vendors within the presentation.
3) Add any additional comments or correntions to the slides in the archive so that key points or errors found during the presentation can be corrected and we can download the updated presentation file.
Yes, Arduino for sure as an easy, relatively inexpensive introduction. However, if you're going to do serious hardware design, you're going to need to go beyond Arduino
@Mrs. Z I don't knwo about hardware, because I used a dev kit made by my university. But we used Keil's uVision free version (code space limited) and it was quite nice and intuitive.
What would be the best *free* / really cheap software & hardware for me to gain some skills at home? (I'm not a programmer type, trying to expand the horizons)
Q: After regaining my composure, optimizers can change code such that it does not work as one would expect, especially writing internal debuggers. Atmel IDE allows one to turn OFF the optimizer thus building code that I design, not the machine.
A: That's true. I recommend people first run their "unoptimized" code before they try to optimize it. That's for raising that point.
After regaining my composure, optimizers can change code such that it does not work as one would expect, especially writing internal debuggers. Atmel IDE allows one to turn OFF the optimizer thus building code that I design, not the machine.
I would like to suggest the following changes to the course:
1) Position slide page numbers so that they can be seen.
2) Add hyperlinks to referenced web sites and vendors within the presentation.
3) Add any additional comments or correntions to the slides in the archive so that key points or errors found during the presentation can be corrected and we can download the updated presentation file.
kenstan, I hate to say this, but do a google search for tutorials on C. I would focus on learning ANSI C, rather than a specialized version of C. The PIC MCC18 C compiler is very close to ANSI C, which is why I prefer it over some of the duino style languages. An easy way to start out with C and embedded devices is to get an embedded dev board that has some C example code. I like this one: http://www.modtronix.com/product_info.php?cPath=1_36&products_id=149 because it has a network interface and doesn't require specialized programming hardware as the firmware can be compiled and the uploaded to the device.
there are a lot of good information in the chat session. Is there a way that we can access these chat session later? Are they made available along with the previous presentation?
@LeoVargas- Sure Launchpad is a great place to start.. economic too.. but may be you have to move to advanced chip in a while...430 is a big family..can jump to anything higher.
Code exists to let humans communicate to machines as well, and the most efficient way is via assembly. HLLs are more human readable and compact, but they suboptimize.
@Jon - worth a mention to remind folks to check mfg errata. it can happen that code can break due to a mfgr issue that might follow a particular die rev
tcryar, it is not enough for it to run on Linux. Linux software doesn't run verbatim on Mac, it needs to be ported. The executable format is not the same, for one.
kensten, depends on what you want to do. I use C with some assembly (for stuff C can't access) when I work on the PIC 18 series of chips. I find C to be easier to read and faster to develop and debug. I move between projects a lot and sometimes will come back to a project source code after a month or two. By having the code in C, I can read it real easy and refamiliarize myself with it easier than assembly. Plus, I use C & java on mac/windows/linux for other work so it makes the learning curve easier.
I have a question about third party and programmer tools (jtag programmers) . how can I make sure those tools work with third party development tools? I used link programmer ATMEL for AT9(ARM9) and didn't work with compiler (KEIL ) . how can we taker over this issues?
@slk: yes, but some families are VERY large, like Atmel AVR. They all use the same RISC instr set, but not all chips implement all instructions (like multiply).
Jon, I don't know you're planning to talk about his in the real-time module. Question is what doyou think of QNX Momentics to develop C/C+ code for even basic MCU software?
It's true that there are a lot of gcc-based ports that MAY work, but the Mac ports can be very hit-or-miss, require a package manager such as MacPorts or Fink, and may not be well updated.
The MikroElectronica is great for low to mid level apps and is great for programming and has libraries but I have not done much for debbugging. (I simulate as I write)
Looking for imput from others on desired software for low to mid level applications that they feel offers the best all round modules such as ease of use and debugging ect.
One disappointment I had when I went from asm programming to C programming is that C isn't THAT much easier than asm. And there were some things I could only do in asm.
We use mikroElectronica and MPlab almost exclusively at work. They work great. MicroElectroinica has lots of libraries andI would recomend it for someone learning. My supervisor taught himself that way.
What learning tool, for us non-programmer (reluctant beginners) best addresses the differences and teaching of the MANY different addressing modes. Decision and control, interupt and pin handling not so bad ... but the addressing mechanisms are terribly confusing.
Reluctant: took minimum programming in eng school. Really useful to know for my current job. I want to play with software / hardware at home, expand the horizons. I never had a good professor, never really caught on that well.
Jalliac, K&R is good for learning C for anything, since C is a language available on so many platforms. But again, the challenge for C newbies with the K&R is that it is extremely brief.
Mrs. Z... How reluctant of a beginner are you to get into C? I think that the K&R is the best C book ever, since it is concise, but it is so concise that it can be hard for non-programers/non-engineers to devour.
The inefficiency stems from the machine not being able to take in the whole context of the application. I'm sure the efficiency is highly variable, depending upon the problem. The upside is that it's easier to maintain when changes are necessary. Plus, the auto-generated code is likely higher quality (fewer bugs in the code itself).
Jon, in all fairness to all the different techniques and tools, isn't it fair to say that all this these different approches can and should be used at different phases of the project?
@jon: C vs. ASM: Given that in both cases you're working close to the hardware, I wonder how reusable is embedded C across MCU families, say from MSP430 to PIC?
@khan38 @caa028 Yes, I thought it would be this way. The model seems to be good to have a notion about what you want to do, but no to really do all the code.
Is anyone else getting constant buffering on the audio display and only hearing "Blog Talk Radio" when refreshing the browser and/or pressing F5 using Chrome?
In a small project, with 5 people at most, does it make sense to create "modules"? I.E. two people take care of hardware, other two of software... or is it better for everyone do a little of all parts?
As we got thru the PPT, please enter your technical questions, and I'll feed them to Jon at the end of the show during our discussion portion. Then he'll come online here to chat directly.
hello alex and jon. I figured out why I wasn't see slides 2 thru end. I needed a newer power point. I was using a PPT 97 so had to get one of those PPT viewers and can seel everything now.
The streaming audio player will appear on this web page when the show starts at 2pm eastern today. Note however that some companies block live audio streams.
@s.schmiedl Where can you see the grades? It still shows up 0 at My Grades, eventhough I heard the two previous lectures and participated in the first one.
Todays MCUs are much faster as well as contain higher memory compared to say 10 years back...In regards to that I wonder does Assembly Language Programming still has any advantage over much simpler C/C+ ? Why does anybody needs to choose ALP other than for having fun?
Q: Ok I was wondering if manuals usually incorporate a rough calculation....such I have encountered with PLCs.
A: You can look at the assembly-language listing produced by a compiler and use the MCU clock frequency and number-of-cycles-per instruction (it can vary from instruction to instruction) to calculate the time needed for a routine. That's a tedious process. Might be easier to put an output instruction at the start and change the state of the output at the end. Use a storage scope to display the signal and determine the time that way. I have used that technique.
Q Is there a method to evaluate controller cycle + instruction processing time? Time sharing between microcontrollers if I am using a network of controllers?
A: I would bet some of the high-end software-development tools, or a third-party tool offers a form of timing analysis. I suggest a Google search.
Is there a method to evaluate controller cycle + instruction processing time? Time sharing between microcontrollers if I am using a network of controllers?
FYI, Your IT department might need to unblock "blogtalkradio.com" for you to get the streaming audio (and to even see the audio player that appears just under the class description near the top of the page).
The streaming audio player will appear on this web page when the show starts at 2pm eastern today. Note however that some companies block live audio streams.
hmmm... is there a bug in the point system? according to "how do i graduate?": "A total of ten points can be scored for each of the five lectures in a track". So how do I get 25 points before the third session even started?
@vagish archived classes are here:http://www.designnews.com/lecture-calendar.asp but problem with audio ...I have the same on this computer and I cannot solve it. It probably comes from firewalls or other Internet protection at browser
hi..i need help..i am from India.i missed previous lectures and though they are archieved i am not able to see audio player or something on those lecture's link..what should i do??my flash player is upgraded and acitive x is not blocked
As energy efficiency becomes more and more a concern for makers of electronics devices, researchers are coming up with new ways to harvest energy from sound vibration, footsteps, and even electromagnetic fields in the air.
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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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