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: border1.nntp.dca3.giganews.com!border3.nntp.dca.giganews.com!border1.nntp.dca.giganews.com!nntp.giganews.com!goblin2!goblin.stu.neva.ru!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 13:11:32 +0200 Organization: cbb software GmbH Message-ID: <1rm7a4kx970x1.qug4mwhf3r0e.dlg@40tude.net> 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> Reply-To: mailbox@dmitry-kazakov.de NNTP-Posting-Host: IenaDxMXK2hi7fvYcb+MlQ.user.speranza.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org User-Agent: 40tude_Dialog/2.0.15.1 X-Notice: Filtered by postfilter v. 0.8.2 X-Original-Bytes: 3535 Xref: number.nntp.dca.giganews.com comp.lang.ada:182247 Date: 2013-07-03T13:11:32+02:00 List-Id: On Wed, 03 Jul 2013 10:03:30 +0200, Georg Bauhaus wrote: > On 03.07.13 09:18, Dmitry A. Kazakov wrote: >> On Tue, 2 Jul 2013 15:21:06 -0700 (PDT), mjsilva@scriptoriumdesigns.com >> wrote: >> >>> I could add to this list of examples indefinitely, without coming anywhere >>> near your Windows/Linux/VxWorks world. >> >> Sure, like doing physical layer of Ethernet using digital inputs and >> outputs. The only question is why anybody would like to? > > Rather, the question is, what *are* these programmers actually > *doing*, and *buying*? They buy Ethernet controllers... > "Using cutting edge sensors and powerful > algorithms, each car in Drive knows where it is." No idea, except that "cutting edge" sensors by no mean require us cycles. > 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 We used DMX for Landegartenschau outdoor installation in Hamburg: This is one of the lamps: http://payload8.cargocollective.com/1/0/20783/2464449/lg_10.jpg Each lamp's LED is individually controlled over DMX. This is the map: http://cargocollective.com/christinametzler/Infografik-Landesgartenschau Each dot on the map is a lamp. The installation is controlled from Windows computers. We could possibly do it much easier (and cheaper) using our embedded Ada middleware and its network protocol instead of Windows + DMX. But it was not available then. No us cycles needed to control LED lamps. Essential is exact time synchronization and huge data flow needed for such an installation. >> Anyway if you want this, why don't you use some Ada to C compiler? > > AdaCore's (formerly SofCheck's) requires a C (or C++) runtime, > and builds a runtime for Ada on top of it, IIUC. So this doesn't > change the picture. It does because the premise was: no run-time at all. Then it is perfectly feasible to compile some arithmetic stuff written in Ada into C. My point is either you have no run-time or else, full Ada, please. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de