nextcas.blogg.se - Qt serial port read

The PC can send the command “A” to the microcontroller.

Let’s show a basic protocol of this kind: Now, if the microcontroller never sends data to the serial port unless the computer sends a command to it, and replies are always fast there is no problem.

Code that updates the GUI should not be called from threads different from the main thread.

If this happens, the GUI “freezes” and this annoys users who think the application has crashed and usually force-quit it.

The thread that runs the GUI event loop should not block for long periods of time (say, more than a second).

The additional problem that occurs when the application has a GUI is the result of two restrictions that GUI applications have: Since serial ports are used primarily to interface a computer with a microcontroller, we’ll focus on this case. This blog post focuses on a topic not covered in the article: using serial ports in Qt GUI applications. This is intended to be a small add-on to the article I’ve posted on my website which explains how to use boost’s asio library to interface with serial ports from C++ code.

I don't know how to fix it.Can you help me ? thank you.Update : Fixed a bug for compiling under visual studio 2010. Project MESSAGE: cmake executable not found. Project MESSAGE: perl -w F:\Android\5.4\android_armv7\bin\ -module QtSerialPort -version 5.5.0 -outdir F:/code/build-qtserialport-Android_for_armeabi_v7a_GCC_4_9_Qt_5_4_1-Debug F:/code/qtserialport In your way ,i download the QtSerialPort for android by Mike Goza ttps:///#/c/84338/.Then when I try to open it,it makes mistakes. Hi,I have tried your way,but it didn't work. If you have any problems with the registration process or your account login, please contact us. Registration is fast, simple and absolutely free so please, join our community today! By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. If you are looking for information about Qt related issue - register and post your question. Over 90 percent of questions asked here gets answered. Qt Centre is a community site devoted to programming in C++ using the Qt framework. Select the forum that you want to visit from the selection below. Before you can post: click the register link above to proceed.