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LinuxTag, GSoC and some progress… June 3, 2009

Posted by Florian in Devices, GPE, kernel concepts, Linux, Maemo, OpenEmbedded.
Tags: , , , , , , , ,
2 comments

Its time to make announcements… I should have done this earlier, but like always it takes me a while to find a free minute to write things down.

First is about OpenEmbedded: We will be present at LinuxTag from 24th to 27th of June in Berlin/Germany. I just hope they have a little bit more space for us at the Embedded Area compared to last year. We usually have a lot of interesting devices running OE built Linux we can show. I’m really looking forward to LinuxTag – I haven’t missed one for many years and its always a nice event with a good mixture of community members, business people and users.

LinuxTag

LinuxTag

Google Summer of Code is in progress for some weeks now and I’m in the great position to mentor a very interesting Maemo project… something I always wanted to see but noone found time to do it properly so far: Integrate the Maemo software framework into OpenEmbedded. The benefits are quite obvious – Maemo software will gain compatibility and quality by running on (and if necessary adapting to) various devices. Apart from the fact that Maemo is a pretty good open source framework attracting quite a lot of developers. This is something other devices can and should gain advantage from. Well rkirti made a pretty good description of the project which can be found here.

It would be pretty cool to see Maemo running on this nice device I received a few days ago…

micro2440_gpe

Micro2440 running gpe-mini-browser2

Its a FriendlyARM Micro2440 from Watterott Electronic – this one is equipped with the 7 inch display which gives some more “freedom” to the applications :-) Apart from this the hardware is the same I described in my previous post.

The screen geometry would match the one used by all Maemo devices so far, so it would not mess up all the graphical user interfaces. But there is still some work to do till the boards become a really good development platform. We can build useful filesystem images for them but the installation is still split up into too many steps and the up to date kernels still lack proper support for the camera and the wifi module.

I have made a toolchain to build software for both these devices and the Topas910. Together with an updated install instruction it can be found here at labs.kernelconcepts.de.  Now I’m investigating ways to integrate the toolchains with IDEs in order to simplify application development for mobile and embedded devices.

Micro2440 with Ultimate++ demo application

Micro2440 with Ultimate++ demo application

Here the device runs one of the Ultimate++ demo applications built with its IDE and the GPE-flavour cross toolchain built with OpenEmbedded. A friendly colleague found out what needs to be done to use it for ARM targets… it still needs a little help since Ultimate++ doesn’t seem to have an idea about pkgconfig and I’m not really happy with the size of the resulting binaries. But more about IDEs later…

Have a good time… and see you in Berlin!

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A friendly Development Board May 26, 2009

Posted by Florian in Devices, GPE, kernel concepts, Linux, OpenEmbedded.
Tags: , , , , ,
7 comments

While we are at the topic ‘evaluation and development hardware’… here here a few lines about a similar piece of hardware. I promised to do something with a FriendlyARM board already – so I did. I choosed the Micro2440 because the board itself is very small and can be used for own design easily. The very similar Mini2440 has a lot of ports on board in contrast to the 2mm headers of the Micro2440. Both boards are available through local distributors in Europe and the US now so that its not necessary to place orders in China any more. Watterott Electronic was so kind to send me a Micro2440 board and the SDK baseboard for evaluation.

Micro2440 SDK

If you want to get started with embedded Linux the board might be exactly what you want: A 400MHz ARM9 based Samsung S3C2440A CPU which is pretty well supported by Linux. 64MB od RAM and the same amount of NAND flash and 2MB of NOR flash for a backup bootloader. The baseboard has the connectors for the serial ports, USB host and client, display, expansion and SD and adds an audio codec and an Ethernet chip. There are two variants available: One with a 3.5″ QVGA TFT (pictured) and one with a 7″ 800×480 TFT.  Both displays come with a touchscreen and in addition to this the board has a few buttons that can be used for a human interface. The whole SDK kit including Micro2440, SDK board, 3.5″ display cables and JTAG doesn’t cost more than 125 EUR incl. VAT which makes it even more appealing.

The ‘softer’ part of the SDK quite appealing too: The hardware is pretty well documented, even the schematics are available to the public. FriendlyARM released some demo images and Linux sources that are useful (but not perfect). The ‘Vivi’ bootloader used by the boards can be replaced with u-boot easily so that you get a 100% Open Source embedded development environment.

Thanks to the OpenMoko community the S3C is pretty well supported in Linux and u-boot. There is a public project providing up to date Linux, u-boot and QEmu supoort for these boards that can be found here. Like I usually do for a new piece of embedded or mobile hardware I used OpenEmbedded to built a GPE based filesystem image for it. Like you can see in the picture it works pretty well. For people interested in this I put together some notes I took and the binary images at KC Labs. Feel free to contact me about this… I plan to extend support for it a little bit and provide a toolchain and additional information.

Have a nice time!

PS: Sorry for the bad image this time, I had to use the webcam to capture it.