This section illustrates an Reference Peripheral Specification (RPS) based interrupt-driven timer, suitable for embedded applications. The main() function initializes and starts two RPS timers.

When a timer expires, an interrupt is generated. The interrupt is handled in int_handler.c. The code simply sets a flag and clears the interrupt. The interrupt flags are checked below in a endless loop. If a flag is set, a message is displayed and the flag is then cleared.