Is there any software that helps me to implement GUI in LPC2478 microcontroller?
Is embOS compatible with LPC2478?
NXP LPC24xx is an ARM7TDMI core part. The question of whether Segger embOS is supported for this target is best answered by consulting the vendors support information (the answer is "yes" BTW).
However embOS is an RTOS not a GUI and while that may be helpful in presenting a GUI on a real-time application, it does not in itself provide a GUI. Segger do however have a GUI product - emWin - which can be used with or without an RTOS, and independent of embOS. The issue there perhaps is whether your particular display device is supported, although it is possible to develop your own or use the microcontroller to control the LCD directly.
Either way embOS and emWin are commercial products with good documentation and excellent vendor support - you would do just as well to ask your questions at info#segger.com.
Note that if you use Keil MDK-ARM Professional, then Segger emWin is included royalty-free.
Related
I worked with smalltalk as hobby when Pharo born. A lot of years passed without touching it, and I'm sure a lot of things happened in smalltalk world. Now I have some projects in my mind and my main idea was to develop using python but I'm thinking to retake this enviroment I loved. One of this projects is about using opencv for recognition from a Webcam, recognition of screen changes in other windows, and painting specific things on screen (a board game).
My idea is to develop on Linux and Windows, and release on Windows/Linux/Mac. Right now which ST flavour fits the interaction I need? Right now what's the main difference between Pharo an Squeak?
Thanks.
I'm sure there are more qualified people around to answer this question. I'll try to be as objective as possible, but these are only my opinions others can see it otherwise. I will write only short description for each.
The interaction would have to be done via FFI.
I also don't know every dialect there is. For example, I haven't heard of trufflesqueak before.
To fit your picture windows/linux/mac:
These smalltalk(s) have the VM support you require (in random order): GemStone, Pharo, Squeak, Cuis-Smalltalk
GemStone/S - is a distributed Smalltalk system with a massive, persistent memory. Offers free usage and also has a commercial support. Very nice Smalltalk with many platforms supported. Windows is supported only as client.
Pharo is a open-source implementation which was originally forked from Squeak. Nice environment, which you know, but it needs to cleanup the code. It has very fast development cycle. In my eyes, the newest VMs have stability issues. The description here on SO.
Squeak the original Smalltalk-80 implementation with plenty of legacy code, but the VM is quite stable and lately it works very nice. The description here on SO.
Cuis-Smalltalk is a multiplatform Smalltalk-80 implementation. Cuis shares the OpenSmalltalk Virtual Machine with Squeak, Pharo and Newspeak. I did not see any projects created in Cuis, maybe somebody can correct me.
Other interesting smalltalks:
Dolphin (windows only) - nice smalltalk for Windows. Supports integration with Windows and calling windows code.
Smalltalk/X - for Windows and Linux VM (there is MacOS VM port for Smalltalk/X but it is not public yet, maybe it will appear on Smalltalk/X-jv later on). Developed by eXept mainly by Claus Gettinger. There is an independent branch Smalltalk/X-jv - list of features and the description on SO.
Commercial Smalltalks
You can try these out, but you for commercial use you have to pay license fee.
VAST owned by instantiations - they are working on MacOS support but it is not there yet. Very mature Smalltalk with commercial support.
Cincom's VisualWorks - The development is somewhat lacking lately but still Smalltalk with company behind it.
Pharo Spec (the widget library) has a Gtk3 backend that can be used to develop application in any platform (there are a few targeting windows), and I know there was work done using OpenCV, but you will have more luck asking that in our discord channel (https://discord.gg/QewZMZa) or any of our mailing lists (check links here: https://pharo.org/community).
I was recently assigned a micro-controller programming task. I will need to program on MKL05Z32VFM4 device.
I was reading some programming tutorials on Microchip Technology's MPLAB IDE X, because that seems to have the most information, but looks like that IDE is only for Microchip products.
What development tools should I choose for MKL05Z32VFM4? Are there a generic IDE and simulator environment? Are there some tutorials for me to start to look at?
I apologize for a basic question. I am a decent general software developer, but I am very new to this area.
(this post will be partly useless if you plan to use some commercial toolchain like Keil, IAR or sth like that)
For ARM Cortex devices you have quite a lot of options available (; If you're in a mood for a bit of automatic translation you could check my website - I wrote a tutorial about (open source) toolchain for ARM - http://www.freddiechopin.info/pl/artykuly/35-arm/59-arm-toolchain-tutorial - unfortunately it's not translated to English, so you'll have to use google translate. There are also some other resources that you might find useful, especially my template/example projects for such toolchain (in Download). If you ever used Eclipse, Makefile and GCC this whole subject should be easy for you. Most of example projects will be close to what you need, but you should probably check example for STM32 (any) - which is a Cortex-M3, and the example for LPC1114 - which is a Cortex-M0.
As for the simulator, I personally think they're not worth the trouble, recent GCC toolchains disable it anyway, as it's only instruction simulator, you won't be able to easily simulate peripherals. If you want to simulate instructions just write your code for PC as it will work the same way (; If you need to check something on the real hardware you can use GDB and JTAG. As long as it's not some extremely expensive proprietary design (you can - again - check my website for other options) the tools are almost free - OpenOCD (GDB Server) is open-source, and you can buy a FTx232 based JTAG (the most popular kind for OpenOCD) starting at ~30$.
Big commercial toolchains sometimes have simulators with peripherals simulation, but these cost a few thousand € / year (;
Google around for "ARM Cortex" with keywords like: toolchain, gcc, openocd, debugging, jtag etc. to find some articles - there's a lot of it in the network.
Your question is really general, so pretty hard to answer, as we don't know what tools are you going to use, are you planing to use some external libraries, what type of work are you going to do with these devices etc.
From my experience contact with embedded world is often a huge shock for developers of PC software. It mostly works the same, but because resources are constrained you really should do things differently. You don't have "+infinity" of RAM, you should usually try to fit a lot of things in ROM and so on. And of course there's only C and C++, but in C++ you shouldn't use some of it's features (exceptions, RTTI, iostreams, parts of STL, ...), dynamic allocation of memory is not a good idea generally (with the chip you mentioned - 4kB of RAM - it's out of question in my opinion).
The chip you mentioned is really tiny, so it will probably be a bigger shock (;
Try to ask some specific question and give some more details about your project so we could give more detailed answers (;
That's a Cortex-M0 device. You can find lots of information online. You can start at arm.com. As far as toolchains go, gcc and clang are both free and support ARM and will work fine. You can get ARM's tools too, if that's what you're into. JTAG for debugging is going to cost you - most people use ARM's in-house RealView debugger or Trace32 from Lauterbach. I've also used the BDI3000 from Abatron.
It looks like a Freescale MCU. Freescale's IDE of choice is CodeWarrior.
A good place to start is the part manufacturer's site, generally they will have tools or links to recommended third parties as well as application notes and libraries. Start at the Freescale Kinetis KL0 series "Software & Tools" page.
Freescale's own CodeWarrior tool is Eclipse based.
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I am an adept Visual Basic programmer. I wish to learn about how people program hardware. For example I have seen people create an LED watches, boxes etc. How do you achieve this? Can it be done using VB or Java? I have some experience in reading C, C++ code. I am only aware of IO in the C and C++ language.
Probably you are looking for a programmable microcontroller. If you have experience in C/C++/Java, checkout Arduino. Its chip is programmed using a C like language. This "How tos" page might help you get started. There are also some good books that will help you move forward:
Programming Interactivity.
Making Things Move DIY Mechanisms for Inventors, Hobbyists, and Artists
Wiring is a platform similar to Arduino.
Also have a look at the Forth programming language. There are lot of interesting "tiny
computers" that you can program with this rather unusual language. Here is a partial list:
Forth Inc
Greenarrays
Zilog Z8
PIC18Fxx2
Two famous Forth books:
Starting Forth
Thinking Forth (A classic in Software Engineering literature.)
how people program hardware
If by 'hardware' you mean a standalone device (an embedded system), then the process involves cross-compilation. Code for the device is written in some (high-level) language on a host PC, compiled, and converted to a form suitable for downloading onto the target device.
A cross-compiler generates executable code for a platform other than the one it is running on -- for example, an AVR cross-compiler will generate code for the AVR microcontroller, but the compiler runs on a PC. Universally, assembly and C are used, and to some extent C++, Java and Ada.
If by 'hardware' you mean some device connected to the PC via some port (serial, parallel, USB), then the programing involves interaction through that port, possibly needing a device driver as well.
Can it be done using VB or Java?
I'm not sure about VB (perhaps there are VB compilers for WinCE and its ilk). Java is used on more complex/larger embedded systems (eg. mobile phones), mainly to develop user applications for the device.
create an LED watches, boxes etc. How do you achieve this?
If you're interested in developing something like a LED watch, you need to learn how to program a microcontroller. At the least, you need two components: the microcontroller and some hardware which loads programs onto it (a programer). You may invest on a development board, or build one yourself. Naturally, you will also need the cross-compiler, and the sotware that interacts with the programer so that it can load code.
I'm partial to AVR, so I'd suggest that. Other options include PIC, some variant of 8051, PSoC1 and TI's MSP devices.
The AVR tool-chain is bundled in WinAVR, and it includes avr-gcc (cross-compiler frontend), avrdude (software that interacts with the programer hardware) and a C library (avr-libc) + a bunch of useful tools. Programing hardware can be as simple as DAPA/bsd to USB based ones (AVRISP, USBasp, Usbprog) etc.
Or, if your PC still has a parallel port, you can try to control say a set of LEDs using an application written in VB. Check http://www.lvr.com/parport.htm for details.
I would recommend starting out with something like an arduino, which is a good place to get started with programming close to the hardware. It's a prototyping board with some built-in leds and other things, depending on which model you get. You can use C/C++, or any other language which can be cross-compiled to a format which is compatible with the target hardware (ATMega microcontroller I believe on the arduino).
Check out: http://www.google.com/search?client=ubuntu&channel=fs&q=arduino&ie=utf-8&oe=utf-8
If you just want to connect something to the computer serial/parallel port and 'talk' to it, you can use most languages. In Visual Basic you'll need a dll to achieve this. Java may be able to do it too.
If you want to program a microcontroler chip, you'd best learn C, because this is the language used to program most of them, although some of them accept basic, java, processing and C++.
There are a number of basic stamps you can use to get your feet wet. parallax for example made their business on basic based embedded systems. If you want to move forward at that programming level you really need to learn C for the most coverage, and I highly recommend assembler as well, at least a few different instruction sets.
You might be interested in Gadgeteer. I got to play with a kit a few weeks ago, and it's amazing fun. You can't currently do VB, but you can do C# and VB is coming very soon.
I am having big trouble to communicate through USB, from a Mac to an external HID device. The hardware has been proven fine when running under the Windows XP platform, but I can't find a GOOD exemple of programming the HID with Cocoa / objective-C. Several exemples are available in the Apple center, but they are either poorly documented, or too much complex ( in term of software with mixed objective-C and C, making the file difficult to understand), or not up to date. Well, I must say that I am more an hardware electronic engineer than a software specialist !
So far, I can enumerate the USB port, identify my device using the HID Apple's tools ( I read PID and VID ), but I miserably fail to send a report and/or to read a report back from the external device.
I would certainelly appreciate if one of you has used the new Apple's HID API and can share some know how.
On the other hand, is there any "USB spy" tool operating with the Apple's OSX ?
Thank you so much for your help
Michael
So yes, you're going to have to dive down and write C, not Objective-C, to do your thing.
Luckily, there's an additional Apple resource to make the USB/HID Manager MUCH easier.
See the HID Utilities Sample/Library from Apple
You are not going to find an Objective-c interface for the HID. At least, not anything more than a wrapper. Because of dynamic binding and delayed messaging, Objective-c is poorly suited to programming time dependent task like device drivers or for communicating with same. You're going to have to work in C.
The Apple resources: Accessing Hardware From Applications,the HID Class Device Interface Guide are going to be your best resources. This tech note offers a good overview as well.
The Apple System profiler will scan you USB chain to see what devices are visible to the hardware itself.
Edit01:
Can't believe I forgot about /Developer/Applications/Utilities/IORegistryExplorer. It gives you a detailed breakdown of the entire hardware tree.
I'm working on MPSOC, specially STM ST40 (SH4 base) and ST231 and I'm wondering which OS i can use on these to port a parallel application, I already had a look at STLinux which is the STM distribution of a Linux platform for their MPSOC (which unfortunately doesn't work well for ST231 coprocessors) and I also had a look at OS21 which is a task based OS.
Any information about other RTOS are warmly welcome! (specially those with libc and pthreads :)
Those 4 came to my mind:
MicroC/OS-II: Its free and simple, but i think there are too few good resources available
LibeRTOS: I can recommend that. I used it several times for different projects. It's good it's fast and the dual kernel concept is really well done.
RTLinux: Can't tell you much about that one. Only used it once for a very small project and didn't get deep "behind the scenes" But it was fast and reliable. (and very expensive)
VxWorks: Awesome OS... From Wikipedia:
multitasking kernel with preemptive and round-robin scheduling and fast interrupt response
Memory protection to isolate user applications from the kernel
SMP support
Fast, flexible inter-process communication including TIPC
Error handling framework
Binary, counting, and mutual exclusion semaphores with priority inheritance
Local and distributed message queues
Full ANSI C compliance and enhanced C++ features for exception handling and template support
POSIX PSE52 certified conformance
File system.
IPv6 Networking stack
VxSim simulator
Supports: C/C++/JAVA
If money is no problem: Use VxWorks! You can do anything: Upgrade your fridge, built a war machine or fly to Mars ;-)
Otherwise check out LibeRTOS...
If you really want ot use an RTOS, be prepared to use a native API that is way more efficient and streamlined than pthreads...
I have used Micrium's µC/OS-II on several projects, on SH4 and a couple of different ColdFires. I continue to recommend it for new projects today.
Micrium has just announced a major upgrade to be called µC/OS-III that will add unlimited preemptively scheduled threads, as well as a round-robin scheduler for equal priority threads. It doesn't appear to be for sale yet, however.
If you need the capabilities, they also have a FAT file system, a PEG graphical UI library, USB device and host, and TCP/IP available for additional license fees.
Source code to everything is included in the price, and I've always found their support to be friendly and knowledgeable.
With the processors you mention you seem to be into set-top boxes.
You have the choice between the ST Linux distro, which is not very stable and the OSXX distro, which is proprietary for ST, but much more stable and with nice tools for debugging and the like (I'm not so sure about OSCC and libc/pthreads)
Barebones/AMP - because it allows 100% control and it allows the lowest latency.
Using Linux or FreeRTOS is very comfortable but it comes with a price tag.