I have been using a Linux operaing system on a small ARM processor board. All of my software runs in user-space. I have had a big challenge creating software interrupts on a periodic bases. I've used the sigaction() and setitimer() functions to setup this periodic timer interupt. This gives me only one periodic interrupt that occurs ever 30ms. Is there a better way to do this? Could I get these interupts to occur more often, perhaps every 100us?
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.