hw_timer.c File Reference

Copyright (c) 2014-2018 Microchip Technology Inc.

and its subsidiaries.

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

Functions
static void	configure_irq_handler (void)
	to register the timer callback with the corresponding handler ID More...
void	restore_cpu_interrupt (uint8_t flags)
	to restore saved interrupt status More...
uint8_t	save_cpu_interrupt (void)
	to save current interrupt status More...
static void	tc0_callback (void)
static void	tc1_callback (void)
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 enable overflow 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...

Variables
static tc_interrupt_t	tc_interrupt
uint8_t	timer_multiplier
tmr_callback_t	tmr_callback

static void configure_irq_handler ( void  )

static

to register the timer callback with the corresponding handler ID

References irq_register_handler, tc0_callback(), tc1_callback(), and TIMER.

Referenced by tmr_init().

void restore_cpu_interrupt

(

uint8_t

flags

)

to restore saved interrupt status

Parameters

saved

interrupt status

References cpu_irq_restore().

uint8_t save_cpu_interrupt

(

void

)

to save current interrupt status

References cpu_irq_save().

static void tc0_callback ( void  )

static

References status, tc_get_interrupt_settings(), tc_read_sr(), TIMER, tmr_cca_callback(), and tmr_ovf_callback().

Referenced by configure_irq_handler().

static void tc1_callback ( void  )

static

References status, tc_get_interrupt_settings(), tc_read_sr(), TIMER, tmr_cca_callback(), and tmr_ovf_callback().

Referenced by configure_irq_handler().

void tmr_disable_cc_interrupt

(

void

)

to disable compare interrupt

References tc_interrupt_t::cpcs, tc_configure_interrupts(), and TIMER.

Referenced by tmr_init().

void tmr_disable_ovf_interrupt

(

void

)

to disable overflow interrupt

References tc_interrupt_t::covfs, tc_configure_interrupts(), and TIMER.

void tmr_enable_cc_interrupt

(

void

)

to enable compare interrupt

References tc_interrupt_t::cpcs, tc_configure_interrupts(), tc_read_sr(), and TIMER.

void tmr_enable_ovf_interrupt

(

void

)

to enable overflow interrupt

References tc_interrupt_t::covfs, tc_configure_interrupts(), tc_read_sr(), and TIMER.

Referenced by tmr_init().

uint8_t tmr_init

(

void

)

to initialiaze hw timer

References tc_waveform_opt_t::channel, configure_irq_handler(), DEF_1MHZ, sysclk_enable_peripheral_clock(), sysclk_get_peripheral_bus_hz(), TC_BURST_NOT_GATED, TC_CLOCK_RISING_EDGE, TC_CLOCK_SOURCE_TC2, TC_EVT_EFFECT_NOOP, TC_EXT_EVENT_SEL_TIOB_INPUT, tc_init_waveform(), TC_SEL_NO_EDGE, tc_start(), TC_WAVEFORM_SEL_UP_MODE, TIMER, timer_multiplier, tmr_disable_cc_interrupt(), and tmr_enable_ovf_interrupt().

uint16_t tmr_read_count

(

void

)

read the actual timer count from register

References tc_read_tc(), and TIMER.

void tmr_stop

(

void

)

to stop the running timer

References tc_stop(), and TIMER.

void tmr_write_cmpreg

(

uint16_t

compare_value

)

to load compare value in channel compare register

References tc_write_rc(), and TIMER.

tc_interrupt_t tc_interrupt

static

Initial value:

= {
    .etrgs = 0,
    .ldrbs = 0,
    .ldras = 0,
    .cpcs  = 0, 
    .cpbs  = 0,
    .cpas  = 0,
    .lovrs = 0,
    .covfs = 0
}

Referenced by init_timer(), and tc_init().

uint8_t timer_multiplier

Referenced by tmr_init().

tmr_callback_t tmr_callback