Messages in this thread | | | Date | Tue, 20 Apr 1999 08:23:33 -0400 (EDT) | From | "Richard B. Johnson" <> | Subject | Re: A/D converter |
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On Mon, 19 Apr 1999, Krawietz wrote:
> I have to write device driver for based on ISA slot A/D converter card. > The card does not generate hardware interrupts and I need to pool status > register to check if data are ready to retrive. As I know task queues and > kernel timers work with jiffies which resolution is 100 per second , while > the A/D card works at about 70kHz. What is the simplest way to implement > that kind of pooling without processor lock in busy wait loop. > I will be grateful for any clue. > Krawietz >
I would use the CMOS RTC to generate a periodic interrupt. In fact have done it and it works well.
Cheers, Dick Johnson ***** FILE SYSTEM WAS MODIFIED ***** Penguin : Linux version 2.2.6 on an i686 machine (400.59 BogoMips). Warning : It's hard to remain at the trailing edge of technology.
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