I am working on project where I need to print a receipt through a Hengstler C51 Thermal Printer. The device is working fine and it's printing images too.
I need to write a C program which can open my printer and print my preformatted receipt which is going to contain a simple logo.
I can not figure out how to proceed.
The API Documentations given by Hengstler really stinks. I installed all their drivers and API libs though. I am using Ubuntu 11.04.
I am looking for some sample or demo programs to start from.
might just be easier to make program that creates your image file instead of programming the printer. I can't find anything on this thing. Your best bet is to trial and error on that API and Docs they provide, if you don't like my idea.
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I have been trying to open c files in the Arduino IDE (which some people claim is possible).
I have not been able to do so.
How can I program the Arduino in c given that I have a project/files in another IDE? (for example, MPLABX)
I am not sure what you are trying to archive. Is it that you want to open it via the Arduino IDE or also compile the source code?
I am not aware of programming in bare c in the Arduino IDE. But if you're looking into using real c code, it might be a good time start either compiling and uploading via terminal yourself, or use an IDE which is suited for development with micro controllers.
I think you can tell the Arduino IDE to more elaborately log outputs. This would tell you exactly the commands the IDE is using (uses avrdude). Then you can use an IDE/Editor of your choice for coding.
Otherwise, have a look at eg. Atmel Studio. They also support Arduino.
There are two answers in one:
If you really want to use the ArduinoIDE you have to have a basic *.ino file having at least the defines and includes which are in the project file and the reqiured setup() loop() usually whats in main in c goes to loop() in ArduinoIDE. Thats the stoney path because there are some specific issues coming from the philosophy behind ArduinoIDE (help makers with little (no?) programming skills to get started quickly).
If you just need the Arduino tool-chain and want to work more comfortable you have two other options:
EclipseIDE with the Sloeber add-on. Download the Sloeber-AllInOne-Package for an easy start and THEN add the other modules you need (like for web development or similar)
PlatformIO an IDE for micro controller development - there is also a cloud based version for testing around.
All mentioned tools are real open source and available cross PC platform and not a gift from a company like MS for probably later lockin of devs
What I need to do is to compile and run a program written in C/C++ on Arduino.
I'm ok with every open source RTOS if it supports C especially struct.
So I have found contikiOS does that, and tried to get started.
But I guess contikiOS doesn't support Arduino port anymore and Due is quite recent model so that I couldn't find proper information.
If you know any information on it or want me to help, please give me an advice.
Ah, do you have any other recommendation for RTOS?
Thanks.
If what you need is to run a simple c/c++ software, you have to know that the arduino environment support c/c++ code, as explained in the arduino homepage http://code.google.com/p/arduino/
If for your requirements, you need to use a real time operating system, there is a contikiOS version for Arduino (Contiki-Arduino).
Last but not least, if you are a beginner, i would advice you to use a popular RTOS, to find support on internet easily if you need it. Sadly, i am not an expert on that field. But when i google it, i find Duinos, maybe you could have a look on it.
I want to write Arduino's data readings to a file locally on the computer. I MUST do this in C for a specific reason. Also, I am working in Windows 7 not Linux.
I couldn't find any useful codes on the internet that satisfies my requirement. Can anyone help?
You should think about Processing it uses the same IDE as the Arduino. It has common libraries for sending data back and forth between the Arduino and host PC. Where Processing is built on Java, its code that you write looks just like that of the Arduino's C++
I have an old program written about 1990 but modified several times. Around 2005 I started to use a program PixOps.c from Apple Computer to read different kinds of picture files.
It has worked very well until I changed to Apple's new system Mountain Lion. Now I get several errors. Unfortunately PixOps uses a number of routines not available in Mountain Lion any longer.
Can anyone help me how to find a C routine to read JPEG-images from a file, decode them and store them in a simple bitmap? My program manipulates the picture and then the program draws the new picture on the screen. After that I also want to write the new picture back to a file as a JPEG-picture.
You should look into using a library. The standard for JPEG is called libjpeg. It works on most typical operating systems, including Mac OS X.
The project is also on SourceForge, here.
I am trying to create a GUI for a c code written in LINUX.
This code basically connects two systems, opens the serial port, writes data from one system to the other via the port.how do I go about this?
The development tools present with me are Qt designer version 3.3.5 and K Develop, which one should I use.and how to go about it?
In Linux, every hardware device is mapped to the file-system using standard file-system permissions.
If you're just using a simple serial port protocol under Linux, you can treat any serial port device as a file. Meaning, they can be opened, read, written and handled just using standard files.
The 'filename' for a serial port is typically /dev/ttyS0 or /dev/ttyUSB0 depending on the type of serial port. It is often symlinked to /dev/modem on regular distributions.
I think you may be looking in the wrong place. You should probably search the web for a tutorial on C++ programming, or get a book on it (there are plenty out there). Once you're comfortable with C++ (it'll take a while if you're not already), you can start to read about writing KDE applications. There are probably some introductory things to read on the KDE website, and don't forget that Google is your friend throughout the process ;-)
By the way, Qt Designer is just a program for doing GUI layouts, while KDevelop is a full featured IDE that combines Qt Designer, a text editor, and a bunch of other stuff. You can use KDevelop for writing anything from very simple "Hello World" C++ programs up to, well, something as complex as KDevelop itself.
If you've actually got to write the serial port part (I'm not clear on this from your question), the other system calls you'll need to know about are 'ioctl' and 'termios', to set various serial port parameters.
Seems your using QT. You should try QextSerialPort which is a serial port class for QT.
The doc.trolltech.com site has a huge amount of documentation. You should go definitely take a look.
I would use the latest available Qt library for your distro, since it is a new developpment.
Regarding the serial port C code, I would keep it and call it from your C++ code. Beware of time consuming operations that can ruin the interactive feeling of your app.