hw_timer.c File Reference

Copyright (c) 2014-2018 Microchip Technology Inc.

and its subsidiaries.

#include <compiler.h>
#include <parts.h>
#include "sysclk.h"
#include "hw_timer.h"
#include "tc_megarf.h"
#include "common_hw_timer.h"
#include "conf_hw_timer.h"

Macros
#define	TIMER_PERIOD   UINT16_MAX

Functions
static void	configure_tc_callback (volatile void *timer)
	to set compare interrupt callback according to the timer channel input More...
void	restore_cpu_interrupt (uint8_t flags)
	to restore saved interrupts status More...
uint8_t	save_cpu_interrupt (void)
	to save current interrupts status More...
void	tc_cca_callback (void)
	hw timer compare callback More...
void	tc_ovf_callback (void)
	hw timer overflow callback More...
void	tmr_disable_cc_interrupt (void)
	to disable compare interrupt More...
void	tmr_disable_ovf_interrupt (void)
	to disable overflow interrupt More...
void	tmr_enable_cc_interrupt (void)
	to enable compare interrupt More...
uint8_t	tmr_init (void)
	to initialiaze hw timer More...
uint16_t	tmr_read_count (void)
	read the actual timer count from register More...
void	tmr_stop (void)
	to stop the running timer More...
void	tmr_write_cmpreg (uint16_t compare_value)
	to load compare value in channel compare register More...

#define TIMER_PERIOD   UINT16_MAX

static void configure_tc_callback ( volatile void *  timer )

static

to set compare interrupt callback according to the timer channel input

Parameters

timer

- hw timer channel

References tc_cca_callback(), tc_set_compa_interrupt_callback(), tc_set_compb_interrupt_callback(), and tc_set_compc_interrupt_callback().

Referenced by tmr_init().

void restore_cpu_interrupt

(

uint8_t

flags

)

to restore saved interrupts status

Parameters

saved

interrupt status

References cpu_irq_restore().

uint8_t save_cpu_interrupt

(

void

)

to save current interrupts status

References cpu_irq_save().

void tc_cca_callback

(

void

)

hw timer compare callback

References tmr_cca_callback().

Referenced by configure_tc_callback().

void tc_ovf_callback

(

void

)

hw timer overflow callback

References tmr_ovf_callback().

Referenced by tmr_init().

void tmr_disable_cc_interrupt

(

void

)

to disable compare interrupt

References clear_compa_flag(), and tc_disable_compa_int().

void tmr_disable_ovf_interrupt

(

void

)

to disable overflow interrupt

References clear_ovf_flag(), and tc_enable_ovf_int().

void tmr_enable_cc_interrupt

(

void

)

to enable compare interrupt

References clear_compa_flag(), and tc_enable_compa_int().

uint8_t tmr_init

(

void

)

to initialiaze hw timer

References configure_tc_callback(), DEF_1MHZ, NORMAL, sysclk_get_peripheral_bus_hz(), TC_CLKSEL_DIV1_gc, tc_disable_compa_int(), tc_enable(), tc_enable_ovf_int(), tc_ovf_callback(), tc_set_mode(), tc_set_overflow_interrupt_callback(), and tc_write_clock_source().

uint16_t tmr_read_count

(

void

)

read the actual timer count from register

References tc_read_count().

void tmr_stop

(

void

)

to stop the running timer

References tc_disable().

void tmr_write_cmpreg

(

uint16_t

compare_value

)

to load compare value in channel compare register

References TC_COMPA, and tc_write_cc().