Operating the EDDA-Chip with an embedded Linux Computer

Electronic Vision(s) Group

Past Projects

The EDDA-Chip was first operated with software developed under MS-Windows. But as Windows needs a graphics card to operate and the aim of the project is to have a portable computer with low power consumption without a graphical display, it was decided to use Linux as an OS. Linux allows to cut the needed hardware down to a minimum. It also is scalable to fit on a small Flash-HD.

Problems:

parts of the software had to be ported from Windows to Linux
a Kernel driver had to be developed (the WinDriver toolkit was used to develop a driver under Windows which should be code compatible with Linux but doesn't support the required chain-list DMA under Linux)

Solutions:

Some routines were newly implemented to provide compatibility with Borland C++.
Several macro definitions were included in the source so it can be compiled on Windows and Linux
The Standard Template Library (STL) was patched as the one currently used by the gcc doesn't support the 'at()' method for the class 'vector'.
A Kernel module was written to provide the DMA routines missing in WinDriver.
The WinDriver source was patched to use the new DMA routines

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