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QNX4 sample projects

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QNX4 sample projects

Postby kumraki » Tue Dec 07, 2010 8:28 am

Hi,

I am new to QNX RTOS.
I am looking for some sample projects with QNX4.
My project is about reading multiple serial ports, if possible simultaneously. And use a timer to control the reading an writing process to the COM ports. Along with the data acquisition I will be doing some control algorithms like PID control of motors.

Right now I am able to do all these tasks sequential on QNX without using any RTOS features just in C programming.
Should I go with multiprocessing or multithreading, which ever the QNX4 RTOS supports.

Any ideas and suggestions are greatly welcome. Where would be the right place to start.

Kumar
kumraki
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RE: QNX4 sample projects

Postby maschoen » Wed Dec 08, 2010 3:44 pm

It seems pretty strange that you are using QNX 4. A great product, but no longer well supported. Thread support was not very good in QNX 4 either. You can accomplish what you describe either by creating slave processes, one each for each serial line, or using select(). I prefer the former.

If you were using QNX 6, a much better choice in most circumstances, you could do this with threads.
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