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.ams3.giganews.com!border1.nntp.ams2.giganews.com!border2.nntp.ams2.giganews.com!border4.nntp.ams.giganews.com!border2.nntp.ams.giganews.com!nntp.giganews.com!rt.uk.eu.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: Tue, 2 Jul 2013 22:21:23 +0200 Organization: cbb software GmbH Message-ID: <1qbszzn3ofdl0$.qk8qtpl9mklt.dlg@40tude.net> References: <31f9819e-6509-4d67-acea-4d2ba9a96c04@googlegroups.com> <4csim6j63mk4.1c54vo5v7eu8c.dlg@40tude.net> <51d280e7$0$6556$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="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: 2510 Xref: number.nntp.dca.giganews.com comp.lang.ada:182233 Date: 2013-07-02T22:21:23+02:00 List-Id: On Tue, 2 Jul 2013 19:29:52 +0000 (UTC), Simon Clubley wrote: > I don't understand why you think the only way to get data into a board > is via a A/D converter. Because digital stuff is better to handle by dedicated hardware. This is why I wrote that if you are using main CPU for the purpose of making a signal generator or an incremental encoder or what you wrote below, it is an architectural problem. [...] > The software on those AVRs (written in C, not Ada; sorry :-)) generates > about 10,000 interrupts per second generating and sampling the bitstream > for the transceivers. So yes, I _do_ need <1ms :-) and I need all of the > interrupts to be on time or the packet will be corrupted during transmission > or reception. See above. I understand that hobby projects may do things one would never do otherwise. But I doubt that there might be serious demand of such stuff. Imaging myself a hobbyist I would rather buy something like a small robot with a decent CPU running Linux with WiFi, actuators, cameras etc, and only if there is Ada 2005 available. Why didn't you take an RF TV remote receiver? It has USB/COM interface and is fairly simple to use. We deployed such stuff in some projects. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de