hw_timer.c File Reference

Copyright (c) 2013-2020 Microchip Technology Inc.

and its subsidiaries.

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

Macros
#define	TIMER_PERIOD   UINT16_MAX

Functions
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...
static void	tc_cca_callback (struct tc_module *const module_instance)
	hw timer compare callback More...
static void	tc_ovf_callback (struct tc_module *const module_instance)
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...
void	tmr_enable_ovf_interrupt (void)
	to disable overflow interrupt More...
uint8_t	tmr_init (void)
	to initialize 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...

Variables
struct tc_module	module_inst
bool	sys_sleep
struct tc_config	timer_config

#define TIMER_PERIOD   UINT16_MAX

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().

static void tc_cca_callback ( struct tc_module *const  module_instance )

static

hw timer compare callback

References tmr_cca_callback().

Referenced by tmr_init().

static void tc_ovf_callback ( struct tc_module *const  module_instance )

static

References tmr_ovf_callback().

Referenced by tmr_init().

void tmr_disable_cc_interrupt

(

void

)

to disable compare interrupt

References module_inst, TC_CALLBACK_CC_CHANNEL0, and tc_disable_callback().

void tmr_disable_ovf_interrupt

(

void

)

to disable overflow interrupt

References module_inst, TC_CALLBACK_OVERFLOW, and tc_disable_callback().

void tmr_enable_cc_interrupt

(

void

)

to enable compare interrupt

References module_inst, TC_CALLBACK_CC_CHANNEL0, tc_clear_status(), tc_enable_callback(), and TC_STATUS_CHANNEL_0_MATCH.

void tmr_enable_ovf_interrupt

(

void

)

to disable overflow interrupt

References module_inst, TC_CALLBACK_OVERFLOW, and tc_enable_callback().

uint8_t tmr_init

(

void

)

to initialize hw timer

References tc_config::clock_prescaler, tc_config::clock_source, tc_16bit_config::compare_capture_channel, tc_config::counter_16_bit, DEF_1MHZ, GCLK_GENERATOR_1, module_inst, tc_config::run_in_standby, sys_sleep, system_gclk_gen_get_hz(), TC_CALLBACK_CC_CHANNEL0, TC_CALLBACK_OVERFLOW, tc_cca_callback(), TC_CLOCK_PRESCALER_DIV2, tc_enable(), tc_enable_callback(), tc_get_config_defaults(), tc_init(), tc_ovf_callback(), tc_register_callback(), TIMER, timer_config, and TIMER_PERIOD.

uint16_t tmr_read_count

(

void

)

read the actual timer count from register

References module_inst, and tc_get_count_value().

void tmr_stop

(

void

)

to stop the running timer

References module_inst, and tc_disable().

void tmr_write_cmpreg

(

uint16_t

compare_value

)

to load compare value in channel compare register

References module_inst, TC_COMPARE_CAPTURE_CHANNEL_0, and tc_set_compare_value().

struct tc_module module_inst

Referenced by tc_init(), tmr_disable_cc_interrupt(), tmr_disable_ovf_interrupt(), tmr_enable_cc_interrupt(), tmr_enable_ovf_interrupt(), tmr_init(), tmr_read_count(), tmr_stop(), and tmr_write_cmpreg().

bool sys_sleep

struct tc_config timer_config

Referenced by tmr_init().