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  • Serial.begin(speed, config) not compiling for Leonardo Board

    - by forgemo
    I would like to configure my serial communication to have no parity, 1 start- and 2 stop-bits. The documentation for Serial.begin(speed, config) states: (...) An optional second argument configures the data, parity, and stop bits. The default is 8 data bits, no parity, one stop bit. The documentation also lists the possible configuration-values. According to my (limited) understanding, I need SERIAL_7N2 or SERIAL_8N2 to meet my requirements. (I'm not sure how the data-bits relate to the the 1-start-bit that I need.) However, I can't even compile because I have no idea how to supply that config value to the begin method. (I don't have much Arduino/C++ experience) I've tried in my code the following two variants: Serial.begin(9600, SERIAL_8N2); Serial.begin(9600, "SERIAL_8N2"); Am I missing something? Additional Information: Serial.begin(speed, config) has been introduced with the latest Arduino 1.0.2 IDE version. The code defining/implementing the begin methods can be found here. HardwareSerial.h HardwareSerial.cpp Edit: According to the replies from PeterJ and borges, the following variant is correct. Serial.begin(9600, SERIAL_8N2); However, it's still not working. I found that the compile error doesn't occur if I change the configured board from my Arduino Leonardo to Arduino uno. Therefore, it could be a bug occurring only with a subset of boards ... or maybe it's not supported?!

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  • Generating C++ BackTraces in OS/X (10.5.7)

    - by phillipwei
    I've been utilizing backtrace and backtrace_symbols to generate programmatic stack traces for the purposes of logging/diagnosis. It seems to roughly work, however, I'm getting a little bit of mangling and there are no accompanying file/line numbers associated with each function invocation (as I'd expect within a gdb bt call or something). Here's an example: 1 leonardo 0x00006989 _ZN9ExceptionC2E13ExceptionType + 111 2 leonardo 0x00006a20 _ZN9ExceptionC1E13ExceptionType + 24 3 leonardo 0x0000ab64 _ZN5Rules11ApplyActionER16ApplicableActionR9GameState + 1060 4 leonardo 0x0000ed15 _ZN9Simulator8SimulateEv + 2179 5 leonardo 0x0000eec9 _ZN9Simulator8SimulateEi + 37 6 leonardo 0x00009729 main + 45 7 leonardo 0x000025c6 start + 54 Anything I'm missing something, doing something silly, or is this all I can expect out of backtrace on OS/X? Some other tidbits: I don't see a rdynamic link option for the g++ version (4.0.1) I'm using. -g/-g3 doesn't make any difference. abi::__cxa__demangle doesn't seem to do anything

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  • How to reduce the tearing while watching videos?

    - by Leonardo TM
    I'm using the Ubuntu 10.10 with both VLC player and MPlayer and already installed the ATI drivers. I watched the same videos on Windows 7 and Ubuntu. But on Ubuntu the images have a lot of tearing. I tried some newbish-configs on my ATI config tool, but nothing changed. I tried videos in mkv, avi, rmvb... and in all kinds of resolutions. I would love to see some tips or maybe a solution to this problem. (I have searched for similar questions but I didn't find any :/ ) The english is not my primary lang so sorry for my mistakes. Thanks in advance! []'s Leonardo My HW Config (Acer Aspire 5740G-6979) -ATI Mobility Radeon 5650 -Intel Core i5-430M -4GB Ram

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  • How to detect a change in a background window

    - by Leonardo
    Hi, Let's say I have a chat window open in a web browser, and I'm waiting for a message from my partner, trying to do something else in the meantime. The chat window (not an installed program) will not alert me of an incoming message, nor will the task bar flash or anything. Is there any utility that can help me? In search of a solution, I came across AutoHotKey. There is a script called livewindows.ahk, which will show a piece of the window anywhere on the screen, but it won't alert me on a change. I'm not skilled enough to know how to store and compare e.g. every second's content of some window area. Maybe someone has invented this wheel? Thanks in advance for any hint or advice. Leonardo

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  • best way to save data in ipod touch/iphone objective-c

    - by Leonardo
    Hi all, I am writing a very simple application, for iphone. Unfortunately I am really a newbie. What I am trying to do is to save data at the end of a user experience. These data are really simple, only string or int, or some array. Later I want to be able to retrieve that data, therefore I also need an event id (I suppose). Could you please point out the best way, api or technology to achieve that, xml, plain text, serialization... ? many thanks Leonardo

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  • MVC with cocoa/objective-c

    - by Leonardo
    Hi all, I have a strong j2ee background, and I am trying to move to objective-c for some desktop/iphone programming. I used many java web frameworks with mvc in mind, spring and struts ecc... so I am used to have servlet or controller which pass attributes to jsp pages, which is the view. In jsp pages with jstl you can call this attribute and render to video. In this way controller and view are (in theory) clearly separated. With xcode, I can easily recognize the controller and the view built with IBuilder. All the tutorial I found, shown the controller which go and change directly labels or text fields. So my two questions: seems to me that there's no separation between the two (controller and view), where I am wrong in that ? is there a way for a controller to pack all objects in a kind of context in a j2ee way and have the view read that context ? thanks Leonardo

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  • Flash in firefox does not start unitl they show in page

    - by Leonardo
    I have this little problem. My client wanted two distinct swf on a web page: a viewer on top and a slideshow of images at bottom. Clicking a link on the slideshow make the viewer load a movie, by means of LocalConnection api. The slideshow has a default, so when the page is loaded a default movie start. This works nice on all browser. The only problem I have is on firefox. When screen resolution is too low, or the monitor is too small (netbook) the slideshow remain hidden until scrolling. Therefore at page loading it doesn't start and the main viewer don't get instructed on playing the default video. As soon as I scroll the page, and the slideshow swf display on page, it starts and everything works fine. Do you know if there are any solution to this ? I cannot change the design, I must have two distinct swf, they come from a library he has, and I am trying to reuse components. thanks Leonardo

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  • UITableView details as a subview

    - by Leonardo
    Hi all, I have a UITableView in iPhone with enough cell to make it scrollable. I would like to have a subview display whenever I click on a cell, rather than using the navigation controller behaviour. The problem is that I cannot calculate the CGRect exactly to have the subview always centered in page, because the CGRect is calculated from top of table, and if I scroll table and click cell, the subview will be added out of screen. The solution could be easy, but I don't know if it's possible: identify the portion of the current viewable area of the UITableView and obtain in some way the frame and therefore origin and size, then build a subview based on such coordinates. Do you think it's possible without writing not too much code ? thanks Leonardo

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  • NSDictionary with specific property of plist

    - by Leonardo
    Hi, I have a plist with key values. Each key represent a language, let's say 'it' 'en' ....ecc The value of each key is another key/value(=array) set. At startup I would like to create a dictionary by reading only a specific key. Let's say the locale of my iphone is 'it', then the init method would only parse it key, because the only way I found by now is to make a dictionary from the whole plist file and then another dictionary. But I can imagine this can become quite cpu consuming if I add more language in the future. thanks Leonardo

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  • IBOutlet UILabel do not get resized

    - by Leonardo
    HI all, I have designed a view in Interface Builder and connected correctly with its controller. There some UILabel in it that are going to be filled with lot of text. But, even if I have declared "word wrap" and set line to 0 in IB, I can display only first line. I notice that if I increase the height of the UILabel in IB, all the text display properly in multi line, but I cannot do that because text may vary. Shouldn't the UILabel resize itself to fit all the text ? Also, if I built the UILabel programmatically I can succesfully accomplish a word wrap, why cannot do the same with IB ? What am I doing wrong ? thanks Leonardo

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  • database design question

    - by Leonardo
    Hi all, I am building a database as a simple exercise, it could be hosted on any database server, so I am trying to keep things as much standard as possible. Basically what I would like to do is a 'code' table that get referenced by other entities. I explain: xcode id code r role p property code r admin r staff p title .... then I would like to have some view like: role (select * from code where xcode='r') r admin r staff property (select * from code where xcode='p') p title then, suppose we have an entity myentity id - 1 role - admin (foreign key to role) title - title (foreign key to property) Obviously I cannot create foreign key to a view, but this is to tell the idea I have in mind. How can I reflect such behaviour using whenever possible, standard sql syntax, then as a second option, database additional features like trigger ecc... ? Because if I tell that role and title in myentity are foreign key to 'code', instead of the views, nothing would stop me to insert a role in title field. thanks Leonardo

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  • How to add menu items in System menu

    - by Leonardo Montenegro
    I want to insert an item to System menu: Help and Support About Gnome About Ubuntu More specifically, I want to insert a new item under "About Ubuntu". Trying with alacarte doesn't work. Cloning "ubuntu-about.desktop" file and changing his attributes doesn't work too (I even rebooted the computer after that). Searching for categories in "/usr/share/desktop-directories" haven't worked too, and searching for "core" and "about" entries in /etc/xdc/menus neither. It isn't as easy as I thought it would be. Anyone have any suggestions?

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  • Emulator PCSX Reloaded - Fullscreen not working on Unity

    - by Leonardo Montenegro
    I have an older PS1 console with a couple of games I bought some years ago. On my pc, I'm using PCSX Reloaded - the best PS1 emulators for Linux I found so far. But I'm having a little issue on Ubuntu 12.04 Precise. I'm using Unity 3D and I'm trying to run some of my original PS1 games on PCSX Reloaded. Everything works nicely, except for fullscreen. I toggle fullscreen and specify maximum resolution for my monitor, but on fullscreen mode, both left and top unity bars aren't getting hidden. I tried changing between other graphic modes like Gnome Classic and Gnome Classic w/o Effects. On both, PCSX shows bars in fullscreen mode, so it isn't an Unity-specific issue, but an emulator problem. It's a bit annoying play games this way, so basically I'm running games on window mode for now. I'm using default OpenGL graphic plugin on this emulator. I tried changing to X11 graphic plugin and fullscreen worked, but graphics on X11 plugin aren't as good as OpenGL one. Anyone know a way to get fullscreen working on PCSX using OpenGL plugin? Or maybe another graphic plugin w/ OpenGL support.

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  • What's the ideal setup for an news minisite for an app [closed]

    - by Leonardo Amigoni
    I am mobile app developer, I would like my application to check for news about new updates of the app when the user opens it. I am unfamiliar on how I would check from a server if the news are actually new or have already been read. If they have not been read, I could of course display them in the app. Can anyone point me in the right direction on how to achieve this? Something similar to an RSS feed but on mobile. Thanks

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  • Software Architecture and MEF composition location

    - by Leonardo
    Introduction My software (a bunch of webapi's) consist of 4 projects: Core, FrontWebApi, Library and Administration. Library is a code library project that consists of only interfaces and enumerators. All my classes in other projects inherit from at least one interface, and this interface is in the library. Generally speaking, my interfaces define either Entities, Repositories or Controllers. This project references no other project or any special dlls... just the regular .Net stuff... Core is a class-library project where concrete implementation of Entities and Repositories. In some cases i have more than 1 implementation for a Repository (ex: one for azure table storage and one for regular Sql). This project handles the intelligence (business rules mostly) and persistence, and it references only the Library. FrontWebApi is a ASP.NET MVC 4 WebApi project that implements the controllers interfaces to handle web-requests (from a mobile native app)... It references the Core and the Library. Administration is a code-library project that represents a "optional-module", meaning: if it is present, it provides extra-features (such as Access Control Lists) to the application, but if its not, no problem. Administration is also only referencing the Library and implementing concrete classes of a few interfaces such as "IAccessControlEntry"... I intend to make this available with a "setup" that will create any required database table or anything like that. But it is important to notice that the Core has no reference to this project... Development Now, in order to have a decoupled code I decide to use IoC and because this is a small project, I decided to do it using MEF, specially because of its advertised "composition" capabilities. I arranged all the imports/exports and constructors and everything, but something is quite not perfect in my "mental-visualisation": Main Question Where should I "Compose" the objects? I mean: Technically, the only place where real implementation access is required is in the Repositories, because in order to retrieve data from wherever, entities instances will be necessary, and in all other places. The repositories could also provide a public "GetCleanInstanceOf()" right? Then all other places will be just fine working with the interfaces instead of concrete classes... Secondary Question Should "Administration" implement the concrete object for "IAccessControlGeneralRepository" or the Core should?

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  • Small domain names

    - by Daniel Moura
    I'm want to register a small domain name. I want it to be easy to use from a mobile phone. The '.com' extension is hard to use because you have to press 'o' then 'm'. Does anyone has any suggestions of small domain extension names and where to buy?

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  • Facebook AS3 API publishPost() problem

    - by Alberto Moura
    I'm trying to finish a facebook app using the AS3 API. Im having trouble when using the publishPost (message, attachment, action_links, target_id, uid) function. I can get it to post on the user's wall setting the uid=user.uid BUT I can't make it post on the user's friends wall! Setting the target_id=friend.uid isnt working for me I've also tried uid=friend.uid / target_id=friend.uid, uid=friend.uid/ I have granted ExtendedPermission(ExtendedPermissionValues.PUBLISH_STREAM) as in the documentation. I repeat: I can make it post on the current user´s wall but not on its friends'. Can someone help me with this?

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  • How to get the stacktrace in a mobile device?

    - by Daniel Moura
    I'm getting a NullPointerException in a Nokia S40. I want to know what is causing this exception. The device shows: NullPointerException java/lang/NullPointerException This error only occurs in the device, running in the emulator the application works fine. I use microlog to debug my application. But the application works fine if the log is enabled. Is there a way to get the stack trace when I get this NullPointerException? I don't need all details like the line number just which method cause this exception. UPDATE: I installed the same application in another Nokia S40 and the same error didn't occur. Nokia 2660 - error Nokia 6131 - no error UPDATE 2: Somehow I find what was causing the NullPointerException. import javax.microedition.lcdui.Canvas; import javax.microedition.lcdui.Graphics; public class OuterClass extends Canvas { private Config config; public OuterClass() { this.config = new Config(); } public void paint(Graphics graphics) { HelperClass helper = new HelperClass(this.config); helper.doStuff(); } public void dispose() { this.config = null; } public class Config implements IConfig { public int getSomething() { // ... } } } public class HelperClass { private IConfig config; public HelperClass(IConfig) { this.config = config; } public doStuff() { config.getSomething(); // Here is thrown NullPointerException } } In some situations a thread is started and call the OuterClass.dispose() before the helper.doStuff() causing the NPE. I think when I enabled the log it made the thread slower and helper.doStuff() was called when I expected it to be called.

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  • Error trying to set svn password on Hudson.

    - by Daniel Moura
    After filling the Repository URL, User name and password I get the following error. Does anyone knows how to fix it? No authentication was attemped. FAILED: svn: Operation cancelled org.tmatesoft.svn.core.SVNCancelException: svn: Operation cancelled at hudson.scm.SubversionSCM$DescriptorImpl.postCredential(SubversionSCM.java:1421) at hudson.scm.SubversionSCM$DescriptorImpl.doPostCredential(SubversionSCM.java:1317) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:160) at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:76) at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:73) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:436) at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:186) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:436) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:354) at org.kohsuke.stapler.Stapler.service(Stapler.java:114) at javax.servlet.http.HttpServlet.service(HttpServlet.java:45) at winstone.ServletConfiguration.execute(ServletConfiguration.java:249) at winstone.RequestDispatcher.forward(RequestDispatcher.java:335) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:378) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:91) at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:83) at winstone.FilterConfiguration.execute(FilterConfiguration.java:195) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84) at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76) at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:155) at winstone.FilterConfiguration.execute(FilterConfiguration.java:195) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368) at winstone.RequestDispatcher.forward(RequestDispatcher.java:333) at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:244) at winstone.RequestHandlerThread.run(RequestHandlerThread.java:150) at java.lang.Thread.run(Unknown Source)

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  • psql: FATAL: could not write init file

    - by Leonardo M. Ramé
    as the title points out, I'm getting this error when trying to connect to a PostgreSql database from command line, using PostgreSQL. The client machine is an Ubuntu 11.10 x86_64 and the PostgreSQL libraries are from Version 9.1 Server is PostgreSql 8.3. This is the command that I executed: psql -U postgres -d my_database -h 192.168.0.161 -p 5432 -c "select * from xxyy" I get the same results when I use sudo or su postgres. The sad thing is that I can connect without problems using pgAdmin. Any hint?

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  • Hard disk problem pop up warning

    - by Leonardo
    I'm using windows 7 ultimate and it started to give me this hard disk problem warning that i had before in another OS that made me disable smart, it has been over a year since i did and my pc is running ok so my HDD is ok. all i wanna do is disable this warning that popsup while i'm gaming or doing anything else. thanks for your help :) Edit: (adding in info that was added as an answer instead of part of the question) So it's me again and i agree with both answers but i don't have the money right now to buy a new one, and yeah it could die now, i can't say. so i uploaded an image of hd tune pro scan on my HDD thanks again! anymore information would be even better, bye.

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  • SSH port forwarding through Windows machine

    - by Leonardo Ramé
    is it possible to connect to an SSH server only accessible from inside a network, using a Windows machine without SSH as a gateway?. Let me clarify my question with a sketch: Me (Linux machine)--- WIN (Windows without SSHD)---LIN (Linux with SSHD). Machine Me, is the PC I'm using to connect to LIN through WIN. WIN is accessible from the outside, it has an RDESKTOP port open, and LIN is only accessible from inside the network. Hope you understand the question.

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  • Ubuntu vs Kubuntu: The closest Windows experience

    - by Leonardo
    For an experienced Windows user wanting to start experimenting with Linux, which distro provides the closest Windows experience? Assuming the use cases enumerated below: Web browsing Working with Office 2003/2007 documents File indexing (desktop search) Basic Sql Server 2005 database administration Media playback(MP3, M4P, WMV, WMA, dvds, etc) Windows Live instant messaging Skype calls/video calls Organizing millions of files FTP/SFTP, SSH, telnet automation

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