Timer Drivers

Files supporting the timer driver can be found in the following locations:

• Interface Definition. The header file for the NuttX timer driver reside at include/nuttx/timers/timer.h. This header file includes both the application level interface to the timer driver as well as the interface between the “upper half” and “lower half” drivers. The timer driver uses a standard character driver framework.

• “Upper Half” Driver. The generic, “upper half” timer driver resides at drivers/timers/timer.c.

• “Lower Half” Drivers. Platform-specific timer drivers reside in arch/<architecture>/src/<hardware> directory for the specific processor <architecture> and for the specific <chip> timer peripheral devices.