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=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM autolearn=unavailable autolearn_force=no version=3.4.4 X-Received: by 10.107.6.141 with SMTP id f13mr20081609ioi.106.1511647857867; Sat, 25 Nov 2017 14:10:57 -0800 (PST) X-Received: by 10.157.95.5 with SMTP id f5mr1408461oti.9.1511647857672; Sat, 25 Nov 2017 14:10:57 -0800 (PST) Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!feeder.eternal-september.org!news.mixmin.net!weretis.net!feeder4.news.weretis.net!news.roellig-ltd.de!open-news-network.org!peer01.am4!peer.am4.highwinds-media.com!peer02.iad!feed-me.highwinds-media.com!news.highwinds-media.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!d140no6319019itd.0!news-out.google.com!x87ni4098ita.0!nntp.google.com!d140no6319015itd.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: comp.lang.ada Date: Sat, 25 Nov 2017 14:10:57 -0800 (PST) In-Reply-To: Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=2601:18f:900:f900:453d:87a5:de7c:1786; posting-account=3pYsyQoAAACcI-ym7XtMOI2PDU8gRZS5 NNTP-Posting-Host: 2601:18f:900:f900:453d:87a5:de7c:1786 References: <2dc79fcf-9726-4347-83e1-bcd0c4019c2f@googlegroups.com> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: Subject: Re: Getting started with embedded programming From: Andrew Shvets Injection-Date: Sat, 25 Nov 2017 22:10:57 +0000 Content-Type: text/plain; charset="UTF-8" X-Received-Body-CRC: 757285993 X-Received-Bytes: 3441 Xref: feeder.eternal-september.org comp.lang.ada:49151 Date: 2017-11-25T14:10:57-08:00 List-Id: On Saturday, November 25, 2017 at 5:02:22 PM UTC-5, Dmitry A. Kazakov wrote: > On 2017-11-25 22:39, Andrew Shvets wrote: > > > I'd like to get started with embedded programming next year. What > > would you recommend for hardware as well as OS? I'm looking to spend > > no more than $50 for the hardware and this will be used for hobby > > projects only. > > - What are the inputs (sensors) and outputs (actuators). Peripheral I/O > components are usually far more expensive than the board itself > > - What are the controlling cycles you need 100ms, 10ms, 1ms > > - How much computations you plan to have > > - How much memory you need 1GB or more > > - Passive only cooling and power consumption limitations > > - How big and reliable the external storage must be. SD cards are > useless for anything except initial booting. You may need eMMC or SSD etc. > > As for the OS, there is little choice. VxWorks is commercial, which > leaves you with some Linux. The choice of distribution depends on the > support. Some distributions are well supported, others are not. Booting > ARM is a great headache. So I would recommend to take the distribution > and kernel for which there is a ready-to-use image. > > > Is Raspberry PI my only option or is there something else that you > > have tried in the past? > > There are better boards than Raspberry Pi, but it depends on what are > going to do. E.g. ODROID xu4 is many times faster than Raspberry Pi 3. > > I would recommend to do all developing on a normal PC. The I/O devices > can be same, mocked or emulated. Ada is 100% portable. Once everything > works you can port to the board. > > -- > Regards, > Dmitry A. Kazakov > http://www.dmitry-kazakov.de Thank you for your reply. Honestly, I don't really have an answer to any of those questions. At the moment, my biggest project is a simple "Hello World!" application. Eventually, I would like to make something that can work with input from 3 small digital cameras. However, that is a way off.