From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-0.3 required=5.0 tests=BAYES_00, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!mx05.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Help with embedded hardware/software platform selection for ADA Date: Wed, 3 Jul 2013 18:14:02 +0200 Organization: cbb software GmbH Message-ID: References: <31f9819e-6509-4d67-acea-4d2ba9a96c04@googlegroups.com> <4csim6j63mk4.1c54vo5v7eu8c.dlg@40tude.net> <51d280e7$0$6556$9b4e6d93@newsspool4.arcor-online.net> <182gssxjlz8at$.zid6ypl98cs2.dlg@40tude.net> <51d3dad0$0$6582$9b4e6d93@newsspool3.arcor-online.net> <1rm7a4kx970x1.qug4mwhf3r0e.dlg@40tude.net> <51d41df3$0$6552$9b4e6d93@newsspool4.arcor-online.net> Reply-To: mailbox@dmitry-kazakov.de NNTP-Posting-Host: xkOZ88C3T5fLavXpgyt3vA.user.speranza.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit X-Complaints-To: abuse@aioe.org User-Agent: 40tude_Dialog/2.0.15.1 X-Notice: Filtered by postfilter v. 0.8.2 Xref: news.eternal-september.org comp.lang.ada:16084 Date: 2013-07-03T18:14:02+02:00 List-Id: On Wed, 03 Jul 2013 14:49:54 +0200, G.B. wrote: > On 03.07.13 13:11, Dmitry A. Kazakov wrote: > >>> Another fashionable product, which is currently pricey, is >>> LED light bulb control. Is an Arduino with ham radio attached >>> to every bulb even reasonable? >> >> http://en.wikipedia.org/wiki/DMX512 > > Cables, huh? 8-) I would say yes. If you know how to light a bulb without electric power, I am ready to invest everything I have into your startup! (:-)) >> http://cargocollective.com/christinametzler/Infografik-Landesgartenschau > > Nice! Yet, W-DMX is what people may prefer in their living > rooms, home-made or via meethue.com. I would rather prefer something PoE-based (Power over Ethernet). >> No us cycles needed to control LED lamps. > > Fewer µs means more reason to not throw $$$ of PC hardware at small, > frugal things. But, austerity has never been associated with Ada, > correct? Well, I believe in standards and modular design. Does Ada RM still have an example about positioning disk drive heads? The main problem we faced was running LEDs a smooth ramp without blinking. It required small latencies and a huge synchronous flow of data. It was a gigantic waste of resources, just because the DMX controller had no command "go from Color1 to Color2 in N seconds". >> My point is either you have no run-time or else, full Ada, please. > > Ada's runtime has been both extended and restricted over the years, > via additions and language defined subsets, repsectively. Furthermore, > taking optional Annexes into account, there is no one full Ada, > practically speaking. True. Let us talk about a "reasonable full Ada" then: tasks (with identification), protected objects (with interrupt handlers), tagged types, exceptions, floating and fixed point, Interfaces.C. Plus sockets. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de