Serial Search of an Array, and Binary Search

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Serial communications can be done via either direct to physical serial port connected to the computer or via a USB to serial converter interface. NET has a very useful internal classes which can make this kind of communication to be very easy and efficient. Lets have a look into them. OK, lets first see whether we can detect the serial ports from within serial and binary search program in c#net application.

As a prerequisite, you need to make sure that, while the application is running, the windows user must need to have access to the ports. Serial and binary search program in c#net following C code examples will return a list of Serial port names connected to the computer:.

And it is enough for further processing. The following code snippet will work similarly as the one given above, but it make use of core WMI and returns a list of Management objects:.

Lets see an example how we can open and close ports:. OK, now we can start doing the real communication. However, it is very important that, you have prior knowledge what kind of data the connected device is expecting.

For this, you will need the corresponding firmware API command lists. First thing we are doing here, is discarding existing buffer, if any. Then, we will write an array of bytes to the port. This array can contain several hex values to represent a single command.

Here, I have used one. In this time, normally, windows do ques your work instruction and sends to devices. But, it may not happen because of CPU scheduling issue etc. So, better to check whether any response came or not. Hope this small tutorial on serial port communication with c will be helpful to you in some extent. Let me know if you want some more similar tutorials or have any questions.

Hi, thanks for noticing. Hi Phil, I am not sure what is your actually question is. I have modified it. But, if you have something else question, please explain. I very much appreciate your catch. I just added that class definition as well. Can you make serial and binary search program in c#net tutorial or guid me to writing device drivers for serial port devices? You mean you want to write driver software for serial port serial and binary search program in c#net devices?

If so, you must need to have the command set that the device accepts and what it replies in response. If you got that, you can even use this article to send and receive data. Is it a Placeholder or a Proper. That is simply a constant where you will have to mention your target object name.

There could be, for sure. You can try with this solution, this might help: How can I send binary file to the GPS device via serial port communication, want to update firmware of device using C. Please give me any code if you have for this. Does it need all ping or which pings need mainly to receive and send data from computer and other device.

Its always wise to make connection on demand when needed always without unnecessarily keeping a connection open, unless some exceptional cases. Hi i have a problem with communicating with a serial scale. If i use ReadLine i get no values, but if i use ReadExisting i get a constant string for e. I have problem, it seems like i have nothing to read, it is always stuck here while SerialObj. Write takes either a string or a buffer of data. Length ; i basicaly send 12 or like this values on microcontroller but at recieving side i cant recieve respective serial and binary search program in c#net so plz guide me.

I want to write a serial and binary search program in c#net in c that print papers with Olivetti pr4sl slip printer. Please help me how i can do. Sandip Shinde NetSolution Technogies. Maybe you should write a little bit about the SerialObj and tmrComm, where did they came from?? Can we use serial port communication with AVR micro-controller? I am using WPF. Can you to get punch in and out data from PunchMachine using above code. The docking stations both use the same peripherals, all plugged into the same USB ports.

A device attached to the system is not functioning. Leave a Reply Cancel reply.

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A substantial portion of a knowledge worker's life may be spent waiting for a computer program to produce output. Users and organizations control their wait time by purchasing faster computers, adding memory, or using faster network connections.

Developers of application programs have a responsibility to design their programs make the best use of these limited and expensive resources. This document describes techniques for optimizing improving the speed of computer programs written in C. It focuses on minimizing time spent by the CPU and gives sample source code transformations that often yield improvements.

It's often difficult to guess what part of your program is consuming the most resources, and if you base your optimization efforts on speculation instead of real data, you'll waste a lot of time speeding up the parts of your program that were fast already. Once you have identified a bottleneck, for example a loop that is executed thousands of times, remember that the best thing to do is to redesign the program so that it doesn't need to execute the loop thousands of times.

Optimization is simply waste of programmer time if any of these statements are true: If it's a report-generator program which only needs to be run once a day, the user may start it before going off to lunch and if so there's really no point in making it finish before they get back.

If it's being invoked from within another program that's even slower than yours, again the user will notice no difference. But if it handles mouse-tracking events for a GUI the user will complain about any noticeable delay. Given that optimizing is reasonable, compile in full optimize mode and run your program on "real-world" input data. If you don't have access to real input data, choose your test input data with care: You may have more "time" commands on your system than you realize: You can also get performance information from getrusage if you have it, and of course from profiling programs like gprof, prof, and tcov.

Run your program, again on real world data, and generate a profiling report. Figure out which function uses the most CPU time, then look it over very carefully and see if any of these approaches might be useful. Make one change at a time, then run the profiler again, repeating the process until there is no obvious bottleneck or the program runs sufficiently fast.

The first four are quite important; the rest are in no particular order. Become familiar with the body of literature that describes your specialty and learn and use the most appropriate algorithms, even if you didn't come up with them yourself. You should be familiar with O n notation, which is defined in many computer science texts. Some of the obvious replacements: