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 10.66.250.233 with SMTP id zf9mr6975785pac.12.1379122767622; Fri, 13 Sep 2013 18:39:27 -0700 (PDT) X-Received: by 10.49.99.65 with SMTP id eo1mr761604qeb.3.1379122767570; Fri, 13 Sep 2013 18:39:27 -0700 (PDT) Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!news.eternal-september.org!feeder.eternal-september.org!feeder.erje.net!eu.feeder.erje.net!news2.arglkargh.de!news.litech.org!lnsnews.lns.cornell.edu!usenet.stanford.edu!y3no23251450pbx.0!news-out.google.com!z6ni49901pbu.0!nntp.google.com!z6no1046181pbz.1!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: comp.lang.ada Date: Fri, 13 Sep 2013 18:39:27 -0700 (PDT) Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=108.59.71.54; posting-account=Hfgi0woAAACIlREnJaM0gREFdBZM2A4s NNTP-Posting-Host: 108.59.71.54 User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: <05ecdd0e-41cf-4961-88db-22e0a8cba3f6@googlegroups.com> Subject: How to use GNAT.Serial_Communications ? From: elbric0 Injection-Date: Sat, 14 Sep 2013 01:39:27 +0000 Content-Type: text/plain; charset=ISO-8859-1 Xref: news.eternal-september.org comp.lang.ada:17177 Date: 2013-09-13T18:39:27-07:00 List-Id: Hi, I am learning Ada and try to figure how to communicate with an electronic device on a serial port. I think the code to print 'A' to COM1 on Windows should be about that. ---------------------------------------------------------------- with GNAT.Serial_Communications; use GNAT.Serial_Communications; procedure Test_Serial is Serial : Serial_Port; C : Character; begin Open (Port => Serial, Name => Name (1)); C := 'A'; Character'Write (Serial, C); Close (Serial); end Test_Serial; ---------------------------------------------------------------- However the type of the first parameter of Character'Write is not correct. I get this error message: "expected access to Ada.Streams.Root_Stream_Type'Class". Can someone tell me what I should put there instead of Serial? Do you know any tutorial or code example that can help me?