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  • Embedded programming books

    - by Velho Kerho
    What embedded programming/design books would you suggest? With embedded I mean near to hardware programming in ASM and C/C++. I'm looking something related to best practices in embedded programming/design. Operation system could be Linux, Real Time Linux or any other RTOS.

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  • How to create sandbox in C# for external process?

    - by SuitUp
    How to create sandbox in C# for external process? As sandbox i understand an environment for process i start from C#, that stop that process from interfering with anything else - kernel, system variables, system configuration, memory, registry, disk, hardware, location other than starting place and so on. I want place executable in one place and be sure that this place is only place that can be changed by this process. Additionaly, executable can be written in c, c++, c# etc.

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  • Forward a call to a webservice to another webservice?

    - by Luhmann
    If I have an https webservice behind a firewall on a machine (A) that I cannot access, but access to a machine on the same network (B), from where I can call the webservice on machine A. What is the best way of talking with the webservice on machine A, from the outside via machine B (that I access via VPN)? I can obviously create a service with a matching interface on machine B, and call the methods on the webservice on machine A, and return the result. But I fear for the overhead. Is there another way? Can i somehow forward the request?

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  • Any tips for how to build a LED sytem thet will light up to music?

    - by daniels
    So basically I would like somehow that given an audio file as input (most likely mp3 or I can use some audio engine that will handle other types too) from my computer to control some LED lights so they will be something like an oscilloscope, like the one in winamp. What would I need to be able to do this? I'm interested in building thing up all by myself, coding, hardware, etc.. I'm going with C++ on Windows.

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  • PIC question..~

    - by RyozKidz
    I am currently undertaking software engineering program in one of the local universities at my country. And i am interesting in software and hardware. So i decided to learn it by myself. One of my seniors told me to start with PIC 16 or 18 first. Anyone of here has any links for the related website? And where can i get a device to program PIC other than ebay? thx in advance.

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  • is there any faster way to parse than by walk each byte?

    - by uray
    is there any faster way to parse a text than by walk each byte of the text? I wonder if there is any special CPU (x86/x64) instruction for string operation that is used by string library, that somehow used to optimize the parsing routine. for example instruction like finding a token in a string that could be run by hardware instead of looping each byte until a token is found.

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  • Is it possible to run OSX in a virtual machine?

    - by Frep D-Oronge
    I'd love to be able to try Mac OSX in a VM, preferable on something shiny and new like KVM for linux. I'm a Linux and Windows person, but would like to try out OSX without investing in the expensive hardware or accumulating yet another box to fit somewhere under my desk. (Read: no I don't want to get a Mac Mini) Is this possible? Legal? If so, what are the drawbacks and tricks

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  • An example of advanced database search

    - by Phil
    Hi there, im looking for an example script. I saw one yesterday but for the life of me I can't find it again today. The task I have is to allow the user to search 1 database table via input controls on an aspx page where they can select and , or , equals to combine fields, generating the sql on the fly with a stringbuilder or similar. (it runs behind the corp firewall) Please can someone point me in the right direction of an example or tutorial I've been working on the page, but have run into problems. Here is a snippet; If NameSearch.Text IsNot String.Empty And andor1v IsNot "0" Then sql += "Surname LIKE '%" & name & "%' " & andor1v & " " ElseIf NameSearch.Text IsNot String.Empty And andor1v Is "0" Then sql += "Surname LIKE '%" & name & "%' " End If

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  • Cannot add App_Data SQL Server database

    - by Interfector
    Hello, Using Visual Studio 2010 10.0.20319.1 RTMRel and SQL Server Express 10.50.1600.1 I'm trying to add a new SQL Server Database .mdf, however, I receive the following error: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 25 – Connection string is not valid) I have enabled TCP/IP and Named Pipelines, added Firewall Exceptions for Sql Server, I am successfully connecting from VS in the Server Explorer window. I would appreciate if someone can pint me to a solution to my problem. Thank you.

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  • Safest python code running

    - by Oduvan
    How can I protect my web server, if I run custom users code on server. If any user can submit his python source on my server and run it. Maybe some modules or linux tools for close any network and hardware activity for this script. Thank's all for help!

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  • how can an application use port 80/HTTP without conflicting with browsers?

    - by John
    If I understand right, applications sometimes use HTTP to send messages, since using other ports is liable to cause firewall problems. But how does that work without conflicting with other applications such as web-browsers? In fact how do multiple browsers running at once not conflict? Do they all monitor the port and get notified... can you share a port in this way? I have a feeling this is a dumb question, but not something I ever thought of before, and in other cases I've seen problems when 2 apps are configured to use the same port.

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  • Are there any lightweight analogues to CORBA/RPC for embedded programs?

    - by Mtr
    I am writing embedded applications for different hardware (avr, arm7, tms55xx…) and different rtoses (freeRTOS, rtx, dsp/bios). And every second of them needs to communicate with PC or another digital device. Sometimes interactions logic is very advanced. So I'm interesting in common methodology (like state-machine programming style), protocol specification or library, that could simplify developing such things.

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  • Programmatically find device support GPS or not?

    - by RockOn
    Hi! I am trying to find a code which will help to me to find out the device which I used it has a GPS feature or not? I dont want to know its GPS is enable or disable. I just want to that the device has GPS hardware or not throug program. Anyone have any idea pls help.. Thanks and regards. Mintu

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  • Class Template Instantiation: any way round this circular reference?

    - by TimYorke34
    I have two classes that I'm using to represent some hardware: A Button and an InputPin class which represent a button that will change the value of an IC's input pin when it's pressed down. A simple example of them is: template <int pinNumber> class InputPin { static bool IsHigh() { return ( (*portAddress) & (1<<pinNumber) ); } }; template <typename InputPin> class Button { static bool IsPressed() { return !InputPin::IsHigh(); } }; This works beautifully and by using class templates, the condition below will compile as tightly as if I'd handwritten it in assembly (a single instruction). Button < InputPin<1> > powerButton; if (powerButton.IsPressed()) ........; However, I am extending it to deal with interrupts and have got a problem with circular references. Compared to the original InputPin, a new InputPinIRQ class has an extra static member function that will be called automatically by the hardware when the pin value changes. I'd like it to be able to notify the Button class of this, so that the Button class can then notify the main application that it has been pressed/released. I am currently doing this with function pointers to callbacks. In order for the callback code to be inlined by the compiler, I need to pass the function pointers as template parameters. So now, both of the new classes have an extra template parameter that is a pointer to a callback function. Unfortunately this gives me a circular reference because to instantiate a ButtonIRQ class I now have to do something like this: ButtonIRQ< InputPinIRQ< A1, ButtonIRQ<....>::OnPinChange, OnButtonChange > pB; where the <...... represents the circular reference. Does anyone know how I can avoid this circular reference? I am new to templates, so might be missing something really simple. It's important that the compiler knows exactly what code will be run when the interrupt occurs as it then does some very useful optimisation - it is able to inline the callback function and literally inserts the callback function's code at the exact address that is called on a h/w interrupt.

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  • How to get email from pop.gmail.com using c#?

    - by jiya gupta
    hi, i want to read email from pop.gmail.com using console application. Pop3 client = new Pop3(); client.Connect("pop.gmail.com",995); client.Login("[email protected]", "12345"); //client.IsAuthenticated = true; // get message list Pop3MessageCollection list = client.GetMessageList(); if (list.Count == 0) { Console.WriteLine("There are no messages in the mailbox."); } else { // download the first message MailMessage message = client.GetMailMessage(list[0].SequenceNumber); } client.Disconnect(); } i got error server has closed the connection. i have already disable firewall and antivirus. plz help me.

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  • Android & Google Maps - close info window with back button

    - by m4ch3t3
    I have an activity that holds a fragment with Google Map view in it. App adds several dozens of markers to the MapView, using MarkerManager and ClusterRenderer to form clusters. The problem is that when I have marker's InfoWindow opened and I press hardware Back button, it closes the app. Instead of that, I would like to have the InfoWindow closed. Is there any straightforward way to achieve this?

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  • Capture Video of Android's Screen

    - by Taranfx
    Forget screenshots, is it posible to capture a video of the running application in android? Rooted or non-rooted, I don't care, I want atleast 15fps. Update: I don't want any external hardware. The intent is to make it perfectly portable and every frame is captured within Android OS. If it crosses the boundaries of the app sdk, I'm willing to go to OS level modifications but I would need a starting point.

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  • Killing a thread while deleting an object

    - by viswanathan
    I have an application which does some socket communication with some hardwares. Assume for the particular hardware i have an object and this object intiates a thread which listens on a particular port number say 5001 infinitely until a connection is established. Now if i delete this obect is there anyway by which i can ensure that the thread that is listening on port number 5001 infinitely also gets destroyed.

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  • Another Memory Alignment Question?

    - by utxeeeee
    I understand why data need to be aligned (and all the efforts made to accomplish it like padding) so we can reduce the number of memory accesses but this assumes that processor just can fetch addresses multiples of 4(supposing we are using a 32-bit architecture). And because of that assumption we need to align memory and my question is why we can just access addresses multiple of 4(efficiency, hardware restriction, another one)? Which is the advantages of doing this? Why cannot we access all the addresses available? hugs

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  • Unable to make WMI connection from XP Pro machine to another (not in domain, same workgroup) in C#

    - by JCCyC
    I have two XP Pro SP3 machines. I disabled the firewall in both. The workgroup name is WORKGROUP. I have an administrator account with identical username/password in both. My code to connect is the following: ConnectionOptions options = new ConnectionOptions(); options.Username = myUsername; options.Password = myPassword; options.Authority = "ntdlmdomain:WORKGROUP"; // Commenting this or not makes no difference ManagementScope scope = new ManagementScope(String.Format("\\\\{0}\\{1}", hostname, Namespace), options); scope.Connect(); I always get a System.UnauthorizedAccessException with the text: "Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))" The above code works between two machines that are part of the same AD domain. What am I doing wrong?

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