Notes

This module encapsulates a hardware counter that increments continuously at a constant rate. The counter makes up the basis for measuring time. Additionally, this counter and a corresponding interrupt make up the basis for alarms. This module is abstract, that is, an implementation must be provided by a port in order to support timing.

Include

Constants

AO_COUNT_FREQUENCY

#define AO_COUNT_FREQUENCY (0)

The frequency, in Hertz, at which the counter is incremented.

AO_COUNT_MAX

AO_COUNT_MIN

#define AO_COUNT_MAX (UINT32_MAX)
#define AO_COUNT_MIN (0)

The maximum and minimum counter value, respectively.

Types

ao_count_t

typedef uint32_t ao_count_t;

This type is an alias for an unsigned integer type that can hold a value of the counter.

Functions

ao_count

ao_count_t ao_count();

Gets the current value of the counter.