copilot-1.0: A stream DSL for writing embedded C monitors.

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 "fib"
  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.