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On 13 May 2005, at 02:45, Francisco Ares wrote: |
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> |
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> And as far as there are so many possibilities, does anyone know of |
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> some kind of benchmarks between them? Or should I just try some |
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> different ones for my application? BTW, it is a stepper motor 4 |
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> axles control for a starting point, but I would like to bring more |
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> automation out of an existing PLC to a Linux industrial-grade box. |
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> |
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What are the constraints for this application? ie how often do you |
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need to write stuff? I have never looked at this application in |
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detail, inly very roughly. You can write a kernel module that runs on |
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the timer interrupt (max 1000Hz on i386, may vary on other |
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platforms). Doing much more than this is problematic without another |
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source of interrupts. But if you have DA converters that give |
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interrupts on your motor control hardware you could use these, or add |
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a timer chip that gives customisable interrupts. |
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justin |
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-- |
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