The archive on the page of this port has too many files removed. You will get errors about missing files trying to compile the example. Please read the solution on the same page.
Posts Tagged ‘contiki’
Problem and solution for ez430 RF2500 port of Contiki OS
Friday, April 8th, 2011Contiki on CircleOS
Monday, May 3rd, 2010Now it is a time to mention the recent release of another port of Contiki OS (it is version 2.2.1, not a recent one). This port is running on the STM32 Primer development kit. Because both current versions of this development kit run CircleOS, an embedded OS written by Raisonance, who also created the development kits, it was rather convinient to run Contiki on top of CircleOS. This port creates a serial-over-USB connection, as it was done in the VirtualCOM example. On top of this connection a SLIP connection is established, over which the device running can be accessed with usual TCP/IP tools. Currently this port runs on the STM32 Primer version 1 only!
While porting Contiki, a rather grave problem was encountered. It is the relatively small size of the USB data buffer of just 64 bytes. As Contiki scheduler runs only 10 times per second, the highest speed of connection is around 640 characters per second. Currently this problem results in very small IP packet sizes this port can process, for example a ping packet may carry only a few bytes of data.
A possible solution for this problem might lie in boosting the running frequency of the Contiki scheduler. Look at the function MENU_SetAppliDivider() in the CircleOS.
If this problem gets solved, it will be possible to run all applications Contiki provides over a VNC connection, because both versions of the STM32 Primer provide more than enough resources for doing so. Another extension of the current port would be getting it running on the version 2 of the STM32 Primer. This would make another extension possible — an implementation of Contiki File System interface using the filesystem functions CircleOS 3.x has. This, in turn, would enable working with files on a SD card (a feature of STM32 Primer version 2).
The port can be downloaded either from the Raisonance project page or the project page in this blog.
Contiki port for ez430 RF2500 board
Wednesday, April 28th, 2010The ez430 RF2500 port of the Contiki OS was created as the entry to the MSP430 Design Contest. Currently the port allows to use one RF2500 board as a terminal and another RF2500 board as a sensor node. For further development your may check out the source code from the repository of Contikiprojects (look for the directory with the same name as the server this blog is hosted on). Both the documentation and the source code archive can be found at its software page in this blog.