Hello everybody: On the weekend I moved my XmAD software from RT-Linux Ver. 1 to Ver. 2 (Posix). This software is a data acquisition program that polls data from an AD-converter chip (MAX186) that is connected to the serial port. Everything went smooth. However I encountered the following problem: At higher sampling rates the screen saver of my Notebook computer shuts off the screen about every second or so. I used pthread_make_periodic_np() to start the periodic thread that polls the data from the serial port. My question is: Does pthread_make_periodic_np() interferes with a timer of the computer that controls the advanced power management (APS) functions? Is there a way to get around this problem by using other pthread_ ... functions? A second question is, how to set the period of the periodic thread in pthread_make_periodic_np()? I have the sampling rate in a integer variable sr. Is it ok to use: NSECS_PER_SEC/sr Do I need to use rtl_setclockmode() or is this done by pthread_make_periodic_np() ? Thanks for all the help and of course for RT-Linux. Regards, Harald -- PD Dr. med. Harald M. Stauss Humboldt University - Charite Dept. of Physiology Tucholskystrasse 2, 10117 Berlin --- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] ---- For more information on Real-Time Linux see: http://www.rtlinux.org/~rtlinux/
