I pushed out a new version of atom that incorporates some of John's recommendations (thanks John). And it ships with a slightly better example. The release also includes means to extract code coverage to track which atom rules have fired during testing. -Tom http://hackage.haskell.org/cgi-bin/hackage-scripts/package/atom On Tue, May 5, 2009 at 4:06 AM, John Van Enk wrote:

If any one has been looking at this and wants another example, I've finished two posts on the topic of Atom.

These posts depend on a patch: http://code.sw17ch.com/blog/atom/atom_0.0.2_sw17ch_1.diff

Part 1: http://blog.sw17ch.com/wordpress/?p=84 <- Brief discussion and describes the patch Part 2: http://blog.sw17ch.com/wordpress/?p=111 <- Writing a program to blink an LED.

Feed back would be appreciated!

/jve

On Sun, Apr 26, 2009 at 4:39 PM, Tom Hawkins wrote:

...

Atom is a DSL in Haskell for designed hard realtime embedded programs.  At Eaton, we are using it to control hydraulic hybrid refuse trucks and shuttle buses.  After my talk at CUFP (http://cufp.galois.com/2008/schedule.html), a few people inquired about atom -- I finally had a chance to upload it to Hackage.

http://hackage.haskell.org/cgi-bin/hackage-scripts/package/atom-0.0.2

Some new enhancements: - A simple rule scheduler for load balancing. - Signal probing for debug and data logging. - Functional coverage to monitor which rules have executed. - Started integration with the Yices SMT solver for bounded model checking.

Experiences with our Eaton project: - 5K lines of Haskell/atom replaced 120K lines of matlab, simulink, and visual basic. - 2 months to port simulink design to atom. - 3K lines of atom generates 22K lines of embedded C. - Design composed of 450 atomic state transition rules. - Rules with execution periods from 1ms to 10s all scheduled at compile time to a 1 ms main loop. - 3 minute compilation time from atom source to ECU. - Atom design clears electronic/sw testing on first pass. - Currently in vehicle testing with no major issues.

Tom _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe