timer_xmega.h File Reference

Low-level timer module for AVR XMEGA (interface). More...

#include <hw/hw_cpufreq.h>
#include "cfg/cfg_timer.h"
#include <cfg/compiler.h>
#include <cfg/macros.h>
#include <avr/io.h>
#include <avr/interrupt.h>

Go to the source code of this file.

Values for CONFIG_TIMER.

Select which hardware timer interrupt to use for system clock and softtimers.

#define TIMER_USE_TCC0   1
 Default system timer.
#define TIMER_USE_TCC1   2
 Default system timer.
#define TIMER_USE_TCD0   3
 Default system timer.
#define TIMER_USE_TCE0   4
 Default system timer.
#define TIMER_USE_TCD1   0
 Default system timer.
#define TIMER_USE_TCF0   0
 Default system timer.
#define TIMER_USE_TCE1   0
 Default system timer.
#define TIMER_USE_TCF1   0
 Default system timer.
#define TIMER_DEFAULT   TIMER_USE_TCC1
 Default system timer.
#define TIMER_OVF_VECT   TCD1_OVF_vect
 Default system timer.
#define TIMERCOUNTER   TCD1
 Default system timer.
#define DEFINE_TIMER_ISR   DECLARE_ISR_CONTEXT_SWITCH(TIMER_OVF_VECT)
 Default system timer.
#define TIMER_TICKS_PER_SEC   1000
 Default system timer.
#define TIMER_PRESCALER   1
 Default system timer.
#define TIMER_PERIOD_VALUE   DIV_ROUND(DIV_ROUND(CPU_FREQ, TIMER_PRESCALER), TIMER_TICKS_PER_SEC)
 Default system timer.
#define TIMER_HW_CNT   TIMER_PERIOD_VALUE
 Default system timer.
#define TIMER_HW_HPTICKS_PER_SEC   DIV_ROUND(CPU_FREQ, TIMER_PRESCALER)
 Frequency of the hardware high precision timer.
#define SIZEOF_HPTIME_T   2
 Default system timer.
#define timer_hw_irq()   do {} while (0)
 Default system timer.
#define timer_hw_triggered()   (true)
 Default system timer.
typedef uint16_t hptime_t
 Default system timer.
hptime_t timer_hw_hpread (void)
 Default system timer.
void timer_hw_init (void)
 HW dependent timer initialization.

Detailed Description

Low-level timer module for AVR XMEGA (interface).

This file is heavily inspired by the AVR implementation for BeRTOS, but uses a different approach for implementing the different debug ports, by using the timer structs.

Author:
Onno <developer@gorgoz.org>

Definition in file timer_xmega.h.

Define Documentation

#define TIMER_HW_HPTICKS_PER_SEC   DIV_ROUND(CPU_FREQ, TIMER_PRESCALER)

Frequency of the hardware high precision timer.

Definition at line 140 of file timer_xmega.h.