Hi I´m newbie in squeak
I want to know how to delete a file in a windows system directory in pharo 1.3 seaside 3.0.7 I really appreciate it 2013/9/10, beginners-requ...@lists.squeakfoundation.org <beginners-requ...@lists.squeakfoundation.org>: > Send Beginners mailing list submissions to > beginners@lists.squeakfoundation.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.squeakfoundation.org/mailman/listinfo/beginners > or, via email, send a message with subject or body 'help' to > beginners-requ...@lists.squeakfoundation.org > > You can reach the person managing the list at > beginners-ow...@lists.squeakfoundation.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Beginners digest..." > > > Today's Topics: > > 1. Serial port write freezes the VM (mactro) > 2. Re: Serial port write freezes the VM (Levente Uzonyi) > 3. Re: Serial port write freezes the VM (Maciej Troszy?ski) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 9 Sep 2013 05:35:18 -0700 (PDT) > From: mactro <mac...@gmail.com> > Subject: [Newbies] Serial port write freezes the VM > To: beginners@lists.squeakfoundation.org > Message-ID: <1378730118166-4707333.p...@n4.nabble.com> > Content-Type: text/plain; charset=us-ascii > > Hi, > > I'm developing a mod for Scratch that will allow controlling an educational > robot via Bluetooth. I'm using SerialPort2 class that is included in > Scratch > plugin and allows opening ports by name. Everything works fine BUT, when I > send commands in a loop, and the connection is lost (i.e. the robot was > powered off), the VM freezes. I tried forking the port nextPutAll like > that: > > timer := Delay forMilliseconds: 1000. > port := SerialPort2 new. > port openPortNamed:'COM14' baud:57600. > process := [port nextPutAll:'test'. Transcript show:'port'.] forkAt: 1. > [timer wait. Transcript show:'delay'. process terminate.] forkAt: 7. > > but with no result. Is there any way to write to a serial port with > timeout? > > mactro > > > > -- > View this message in context: > http://forum.world.st/Serial-port-write-freezes-the-VM-tp4707333.html > Sent from the Squeak - Beginners mailing list archive at Nabble.com. > > > ------------------------------ > > Message: 2 > Date: Tue, 10 Sep 2013 04:45:35 +0200 (CEST) > From: Levente Uzonyi <le...@elte.hu> > Subject: Re: [Newbies] Serial port write freezes the VM > To: "A friendly place to get answers to even the most basic questions > about Squeak." <beginners@lists.squeakfoundation.org> > Message-ID: > <alpine.deb.2.00.1309100442210.21...@login01.caesar.elte.hu> > Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > > On Mon, 9 Sep 2013, mactro wrote: > >> Hi, >> >> I'm developing a mod for Scratch that will allow controlling an >> educational >> robot via Bluetooth. I'm using SerialPort2 class that is included in >> Scratch >> plugin and allows opening ports by name. Everything works fine BUT, when >> I >> send commands in a loop, and the connection is lost (i.e. the robot was >> powered off), the VM freezes. I tried forking the port nextPutAll like >> that: >> >> timer := Delay forMilliseconds: 1000. >> port := SerialPort2 new. >> port openPortNamed:'COM14' baud:57600. >> process := [port nextPutAll:'test'. Transcript show:'port'.] forkAt: 1. >> [timer wait. Transcript show:'delay'. process terminate.] forkAt: 7. >> >> but with no result. Is there any way to write to a serial port with >> timeout? > > I can't help you with the SerialPort issue, but the process priorities 1 > and 7 are definitely bad. Since the idle process uses priority 10, your > processes will never run. Try using something between 11 and 39, or use > the named priorities: > Processor userBackgroundPriority > Processor systemBackgroundPriority > > > Levente > >> >> mactro >> >> >> >> -- >> View this message in context: >> http://forum.world.st/Serial-port-write-freezes-the-VM-tp4707333.html >> Sent from the Squeak - Beginners mailing list archive at Nabble.com. >> _______________________________________________ >> Beginners mailing list >> Beginners@lists.squeakfoundation.org >> http://lists.squeakfoundation.org/mailman/listinfo/beginners >> > > > ------------------------------ > > Message: 3 > Date: Tue, 10 Sep 2013 08:39:10 +0200 > From: Maciej Troszy?ski <mac...@gmail.com> > Subject: Re: [Newbies] Serial port write freezes the VM > To: "A friendly place to get answers to even the most basic questions > about Squeak." <beginners@lists.squeakfoundation.org> > Message-ID: > <caa0ua13poqkkmtsqgjwws56ymxhs_s6ec1sa6_fmbkmlfnh...@mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-2 > > Well, at first I tried using larger numbers, but it seems, that my VM > has maximum priority equal to 8. Processor userBackgroundPriority > prints 3 and Processor userInterruptPriority prints 5. > > > pozdrawiam > Maciej Troszyński > > > 2013/9/10 Levente Uzonyi <le...@elte.hu>: >> On Mon, 9 Sep 2013, mactro wrote: >> >>> Hi, >>> >>> I'm developing a mod for Scratch that will allow controlling an >>> educational >>> robot via Bluetooth. I'm using SerialPort2 class that is included in >>> Scratch >>> plugin and allows opening ports by name. Everything works fine BUT, when >>> I >>> send commands in a loop, and the connection is lost (i.e. the robot was >>> powered off), the VM freezes. I tried forking the port nextPutAll like >>> that: >>> >>> timer := Delay forMilliseconds: 1000. >>> port := SerialPort2 new. >>> port openPortNamed:'COM14' baud:57600. >>> process := [port nextPutAll:'test'. Transcript show:'port'.] forkAt: 1. >>> [timer wait. Transcript show:'delay'. process terminate.] forkAt: 7. >>> >>> but with no result. Is there any way to write to a serial port with >>> timeout? >> >> >> I can't help you with the SerialPort issue, but the process priorities 1 >> and >> 7 are definitely bad. Since the idle process uses priority 10, your >> processes will never run. Try using something between 11 and 39, or use >> the >> named priorities: >> Processor userBackgroundPriority >> Processor systemBackgroundPriority >> >> >> Levente >> >> >>> >>> mactro >>> >>> >>> >>> -- >>> View this message in context: >>> http://forum.world.st/Serial-port-write-freezes-the-VM-tp4707333.html >>> Sent from the Squeak - Beginners mailing list archive at Nabble.com. >>> _______________________________________________ >>> Beginners mailing list >>> Beginners@lists.squeakfoundation.org >>> http://lists.squeakfoundation.org/mailman/listinfo/beginners >>> >> _______________________________________________ >> Beginners mailing list >> Beginners@lists.squeakfoundation.org >> http://lists.squeakfoundation.org/mailman/listinfo/beginners > > > ------------------------------ > > _______________________________________________ > Beginners mailing list > Beginners@lists.squeakfoundation.org > http://lists.squeakfoundation.org/mailman/listinfo/beginners > > > End of Beginners Digest, Vol 89, Issue 1 > **************************************** > _______________________________________________ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
