Open4 EvoPrimer

In the previous post I mentioned the Open World Design Contest launched by ST and others. The participants who make it into the second round will get free development tools, notably the EvoPrimer platform.

This platform is actually a very interesting set of tools developed by Raisonance under the name of Open4 (read as “Open for …”). The system is very open indeed and schematics and source code can be downloaded for free. A system consists of a base, a kind of multimeter-sized pod, and target boards that slide into the pod. The base offers the human interface like a color touch screen, a joystick, buttons, LEDs, audio I/O, IrDA, accelerometer and a li-ion battery with charger, the target board offers the applications.


Open 4 dissection...

Several target boards are available, with 8-bit and 32-bit processors from ST, but you can also develop your own. When you open the base you get access to a connector for extension cards that can slide through an opening under de joystick (if you remove the cover). This connector is the main way to go for those who want to add something to the system.

Software development is done with the Ride7 IDE, also from Raisonance, using GCC. The free version lets you compile and flash any size of code and debug executables of up to 32 KB. You have to pay for unlimited debugging. The IDE connects directly to the base through a USB port, without the need for additional programming or debugging pods. Ride7 also offers an ARM simulator.

Instead of writing all the GUI code yourself, you should (but you are not obliged to) built your application on CircleOS. It is not clear to me who the owner is of this OS, but the main thing is that it is free and open source software. CircleOS handles the display, the touch screen and all other hardware that is built in the EvoPrimer base. It also calls the user application on a regular basis and it lets the application interact with the OS to obtain button states etc. Applications are stored in a special memory area and there is room for several of them. The OS will allow the user to select the application from a menu. The application memory available depends on the target board you are using.


Ride7 is a nice IDE indeed!

Although Raisonance and their tools seem to concentrate on microcontrollers from ST, the Ride7 IDE can also be used for ARM-based controllers from other brands. It happily supports many NXP and TI (Luminary) models and if you look in the Ride7 installation folders you will find more supported processors than that the IDE lets you choose from. If you don’t like Eclipse (who does?) and if you don’t mind debugging the hard way, this is a very nice IDE for ARM development. My next Sceptre project will probably be done using this IDE.

Oh, did I mention the price of an EvoPrimer kit? About 100 euros for a base with target board!

2011 OpenWorld Design Contest

OpenWorld is an interesting design contest launched this week by STMicroelectronics and a bunch of industrial and research partners. The OpenWorld application design contest is a “technology promotion engaged by the Autonomie project” with as goal the development of “advanced navigation and augmented reality applications to assist the handicapped”.

The contest is based on the EvoPrimer tools that target especially portable applications. On the Embedded World show I saw a nifty extension card for the EvoPrimer that should allow for some pretty impressive personal in-house dead reckoning. The board was not only capable of tracking horizontal movements, but it also measures vertical displacements so it can help track a person going up and down the stairs. With such hardware some cool augmented reality (I should say this more often: augmented reality, augmented reality) applications should be possible.



To enter the contest and win some of the $ 20.000 cash awards you have to submit a proposition on the theme of Technology for Human Assistance. The best application concepts win EvoPrimer tools and enter the second phase to actually transform the concept into a working prototype.

Meet the people behind LPCXpresso

OK, I admit it, I have been talking quite a lot about LPCXpresso lately. Why? Because I like NXP's concept of handing out free tools (did you know that they did it again? Get a board for free just by answering some questions on their website), but I also have become a fan of the little LPC Cortex-M0 and M3 devices. At the Embedded World 2011 show I visited of course the NXP booth and there I was introduced to the brains behind the LPCXpresson concept. My boss, who came with me, always carries a photo camera and immediately took some pictures, so now you too can meet the LPCXpresso team.



On the left we have Jan Jaap Bezemer who tries to sell (or should I say "give away") the NXP microcontrollers. Second from the left, Rob Cosaro, and the man on the right, Joe Yu, are the people that came up with LPCXpresso. A chuckling Rob told me that he was very much amused by the fact that people are indeed cutting of the LPC-Link part of the board, something that was never really intended. Apparently some people cloning the board add a V-groove to make separating the parts easier.

Embedded World 2011 - Cortex-M3 everywhere

This year I renewed my visit to the Embedded World show in Nuremburg, Germany. Walking around the four halls that make up this big show it was simply impossible not to notice the ARM Cortex-M3 based controllers all around. Most chip manufacturers showed off boards with Cortex M3 devices, including ARM itself with their mbed board and other dev boards. There were also some Cortex-M4 demo's around from f.i. NXP (LPC4300) and Freescale (Kinetis).

This show was also rich in free kits; especially ST was very generously handing out STM32 and STM8 kits. I did not accept all of them, because I have no idea what to do with ‘em. Yet I did leave with (amongst others) a BeagleBoard-xM (thank you TI!), an FTDI Vinculo that I will review later on this blog and a ZigBee kit from ST. Fujitsu promised me to send me a Cortex-M3 kit by mail, I wonder if it will ever arrive.

Update 18/3: I received today a Fujitsu SK-FM3-100PMC kit, nicely boxed. More about it, hopefully soon, on this blog.

Due to a rather large amount of business meetings I did not see a whole lot of new or exciting things this year. However, I did get a demo of the very impressive new PIC32 compiler from MikroElektronika. These guys are definitely setting the new comfort standards for embedded software development. Wow! I always liked Microsoft’s Visual Studio, but this is way, way better. And the good news is that they are planning an ARM compiler too! At just under $300 (or $200 if you buy a board too) this is a bargain.

While I’m on compilers, Atmel too presented a new one: AVR Studio 5. This is a great tool too, and toujours completely free. V5 brings together AVR Studio 4 and AVR32 Studio into one IDE. It also integrates the AVR Software Framework (ASF) and over 400 example projects that used to be all over their website. Now you just pick your board and then the example that comes closest to what you want to do and off you go.

From the chip front I would like to mention the new ultra low-power 32-bit micro-controller family from Renesas, the RL78. Besides being low-power, this family is also ultra low-dollar. With an operating current of only 70 µA/MHz this is a direct competitor for the MSP430 from TI. But TI told me that they will announce an ultra-ultra-low-power MSP family later this year that will blow away the competition.
Microchip proudly announced their new PIC18F K80 micro. This is an 8-bit device that costs over one dollar, even at high quantities. This nicely illustrates the 8/32 bit paradox, but both Atmel and Microchip expect that the 8-bit market will continue to grow.

That is was not only Cortex-M3 all around proved Digi who had on display their pretty impressive ConnectCore Wi-i.MX51. As Digi's website says: "This module is a highly integrated and future-proof System-on-Module (SoM) solution based on the Freescale i.MX51 application processor with a high performance 600/800 MHz ARM Cortex-A8 core, powerful multimedia capabilities and a complete set of peripherals.".



The kit on the left is running Android, the kit at the right runs Ubuntu.
Digi's latest board, the ConnectCore Wi-i.MX53, was on display at the Freescale stand.
Rabbit 6000 modules are now available too.

Analog Devices showed me their new MEMS gyroscopes that have extremely low drift. So, I guess this is good news for the dead reckoning people.

FTDI presented a rather mysterious device, the FT1248. Although they did make it clear that this device communicates over a 1, 2, 4 or 8 bit wide bus of which the width can be adjusted on the fly, I did not grasp the reason of being of this chip. It is probably very useful or they wouldn’t have spent any time on it, but useful for what exactly? I guess that it is a bus extender of some sort, but I can’t find the data-sheet. Oh well, I am sure someone will figure this out for me.

I really like this show; I can hardly wait for next year.

Free cup of LPCXpresso!

A bit over two weeks ago I told you how to get a free LPCXpresso board by making a short video or a photograph of how you got rid of your 8/16 bits micro-controller. I suspect/suppose that NXP will honor every participant.

Here is a picture I received from Antoine Broussal. Note how he did the can and the peanuts.



Just to show you that it is not bogus, here is a picture of the board with its accompanying letter that I received this morning by UPS. It is, as I expected, an LPC1114 board.



Denis Xavier wrote me to tell me that his contribution was accepted too, so Denis, you want to share a cup of LPCXpresso code?

The campaign is still running and the submission stream seems to have slowed down a bit, so go give it a shot yourself!

Embedded World 2011 update: NXP ran out of stock. Please be patient.

BTW, while I was writing this, I received a press release from NXP announcing the LPC1200 series. Compared to the other LPC Cortex-M0 devices these new Cortex-M0 controllers offer up to 128 KB of flash memory, DMA, a real-time clock (RTC) and a CRC engine.

CodeLite & GDB for ARM

Just after finishing the Elektor article about how to debug the Sceptre (or any other microcontroller that can be debugged over JTAG) using OpenOCD and GDB, I discovered another free IDE that seemed to be good for embedded development: CodeLite. It seemed to have everything needed for this kind of work, so I planned to add a supplement to the article on this blog. I thought that it would be easy to port the setup described in the article to this new IDE, but unfortunately it turned out to be not so. To come straight to the point: I have not succeeded debugging my target using CodeLite with GDB and OpenOCD.

Why? Because CodeLite does not treat GDB well or I am to dumb to figure it out. It seems easy & intuitive enough though. You create a project and then you define a debug setup for the project. You can tell CodeLite where your debugger lives and which commands to execute and CodeLite offers a GDB terminal, so everything is there to make it work. Except that it won't.

There are several issues. One is that it doesn't work always the same way. Sometimes I had to pass through the Quick Debug option to get it more or less going, sometimes this was not necessary. The reset command that I specified to be executed after attaching to the target gets executed several times instead of just once as if CodeLite uses a very short timeout to wait for response and then simply tries again. If it manages to get a connection to OpenOCD it is very difficult to use the GDB terminal that most of the times returns a message "interrupting debugee process: xxxx" where xxxx is a number that corresponds to the PC's process ID of GDB. Very frustrating and in the end I gave up, not succeeding once to execute successfully a step command.

It is a shame, because the IDE is nice. Not as heavy as Eclipse-CDT and easy to set up for embedded software development. It has interesting plugins, like the code formatting option that you can setup the way you like it, or a copyright block inserter. A snippet wizard lets you write quickly and you can hide functions that you don't want to see, it has everything you expect from a modern IDE. Therefore I suggest that you give it a try, maybe you don't care for GDB debugging of embedded platforms, it is definitely worth it.

If by any chance you figure out how to get GDB and OpenOCD working properly in CodeLite, please let me know.

Break the 8/16-bit habit

Most people, including me, like to get stuff for free. Electronic component manufacturers know this and often they offer free samples in the hope that their parts get designed in. Microcontroller manufacturers have started doing design contests and other campaigns to get new users for their products. One of the latests campaigns was launched by NXP for their ARM Cortex-M0 parts.

NXP already did do a design contest (or challenge as they called it) for their LPC1100 parts and now they are giving away LPCXpresso boards that contain a Cortex device. To get one, all you have to do is to show how you plan to stop using 8 and 16-bit devices. You can do this by sending in a picture or a video and if accepted it will be posted here.

Here is the video I sent in.



NXP's website does not mention which LPCXpresso board you will get, but I suppose it will be the board with the LPC1114.

Here are some photos & videos I received in response to this article. Feel free to share your way of breaking the 8/16 bit habit by sending me your photo and/or video and I will put them up here too.



L. Francey prefers to use his obsolete microcontrollers to create arty objects.


Marc will eat anything that has legs.


Jonathan likes Aciiid!


Denis combines his passions for nature and electronics.