C/C++/Assembly Timer Interrupts Beaglebone Black

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1

Has anyone achieved timer interrupt routines in C/C++ with the black? I have used the signal.h library to generate interrupts and they are quite noisy as is expected. Using signal.h library the shortest time I can achieve between interrupts is about .1 milliseconds which is pretty poor.

Section 6 of the Technical Reference Manual is on the interrupt controller. However, I am not sure where to begin getting my C code to control the interrupt addresses shown in the reference manual.

I know the PRU can be used for interrupts and controlling real time signals. Yet, better performing interrupts on the CPU would still be nice.

2

You will need to work in the kernel for low latency interrupts. The context switches and signal latency will kill your performance otherwise.

A simple kernel module to manage interrupts shouldn't be difficult; but it all depends on what you are trying to achieve.

Cheers,