Copilot: A (Haskell DSL) stream language for generating hard real-time C code. Can you write a list in Haskell? Then you can write embedded C code using Copilot. Here's a Copilot program that computes the Fibonacci sequence (over Word 64s) and tests for even numbers: fib :: Streams fib = do let f = varW64 "f" let t = varB "t" f .= [0,1] ++ f + (drop 1 f) t .= even f where even :: Spec Word64 -> Spec Bool even w' = w' `mod` 2 == 0 Copilot contains an interpreter, a compiler, and uses a model-checker to check the correctness of your program. The compiler generates constant time and constant space C code via Tom Hawkin's Atom (thanks Tom!). Copilot was originally developed to write embedded monitors for more complex embedded systems, but it can be used to develop a variety of functional-style embedded code. ******************************************************************************* Please visit <http://leepike.github.com/Copilot/> for more information about installing and using Copilot. Also available as index.html in the gh-pages branch of the Copilot repo. In your local repo, > git checkout gh-pages and you should see index.html. ******************************************************************************* Release notes * Copilot-0.26 * Variables are now specs, not strings. This gives stream expressions a type, so no need for constant functions, monomorphic cast functions, or var annotations in expressions. Examples updated to reflect the change. * Copilot-0.25 * Added true, false Specs (Spec Bool) * Removed generic const -- unneeded, since Spec instantiates Num. * Change casting to only allow casts that (1) are guaranteed not to change the sign and (2) are to a larger type. * Removed libs from Copilot.hs. You must import these explicitly. * Fixed buts with LTL and ptLTL libraries and examples and added documentation. * Copilot-0.24 * Fixed a bug in external array analysis for computing the minimum period size. * Added the ability to specify a HW clock for Atom. * Copilot-0.23 * All -Wall warnings removed (from importing Copilot.hs). * Added support for sampling external array values. (See Examples.hs). * Fixed a bug in calling CBMC to ensure it unrolls it's loop. Updated documentation in Help.hs. * Other minor stylistic changes and fixes. * Copilot-0.22: initial release