wdt_megarf.h File Reference

AVR MEGARF WatchDog Timer driver Definition.

Copyright (c) 2013-2018 Microchip Technology Inc. and its subsidiaries.

#include <compiler.h>

Macros
#define	MASK_PRESCALE_WPD3   0x08
	Mask for timeout period setting above WDT_TIMEOUT_PERIOD_256KCLK. More...
#define	PRESCALE_MASK   (WDP3_bm | WDP2_bm | WDP1_bm | WDP0_bm)
	Mask for timeout period setting register. More...
#define	WDCE_bm   0x10 /* WDT change enable bit mask. */
#define	WDCE_bp   4 /* WDT change enable bit position. */
#define	WDE_bm   0x08 /* WDT enable bit mask. */
#define	WDE_bp   3 /* WDT enable bit position. */
#define	WDIE_bm   0x40 /* WDT timeout interrupt enable bit mask. */
#define	WDIE_bp   6 /* WDT timeout interrupt enable bit position. */
#define	WDIF_bm   0x80 /* WDT timeout interrupt flag bit mask. */
#define	WDIF_bp   7 /* WDT timeout interrupt flag bit position. */
#define	WDP0_bm   0x01 /* WDT prescaler 0 Bit mask. */
#define	WDP0_bp   0 /* WDT prescaler 0 bit position. */
#define	WDP1_bm   0x02 /* WDT prescaler 1 Bit mask. */
#define	WDP1_bp   1 /* WDT prescaler 1 bit position. */
#define	WDP2_bm   0x04 /* WDT prescaler 2 Bit mask. */
#define	WDP2_bp   2 /* WDT prescaler 2 bit position. */
#define	WDP3_bm   0x20 /* WDT prescaler 3 Bit mask. */
#define	WDP3_bp   5 /* WDT prescaler 3 bit position. */
#define	WDRF_bm   0x08 /* WDT Reset flag Bit mask. */
#define	WDRF_bp   3 /* WDT Reset flag bit position. */
#define	wdt_reset()   __asm__ __volatile__ ("wdr");
	This macro resets (clears/refreshes) the Watchdog Timer. More...

Typedefs
typedef void(*	wdt_callback_t )(void)
	Interrupt event callback function type. More...

Enumerations
enum	wdt_mode_select {   INTERRUPT_MODE,   SYSTEM_RESET_MODE,   INTERRUPT_SYSTEM_RESET_MODE }
enum	wdt_timeout_period {   WDT_TIMEOUT_PERIOD_2KCLK = (0x00),   WDT_TIMEOUT_PERIOD_4KCLK = (0x01),   WDT_TIMEOUT_PERIOD_8KCLK = (0x02),   WDT_TIMEOUT_PERIOD_16KCLK = (0x03),   WDT_TIMEOUT_PERIOD_32KCLK = (0x04),   WDT_TIMEOUT_PERIOD_64KCLK = (0x05),   WDT_TIMEOUT_PERIOD_128KCLK = (0x06),   WDT_TIMEOUT_PERIOD_256KCLK = (0x07),   WDT_TIMEOUT_PERIOD_512KCLK = (0x08),   WDT_TIMEOUT_PERIOD_1024KCLK = (0x09) }

Functions
void	wdt_disable (void)
	Disable Watchdog. More...
void	wdt_enable (enum wdt_mode_select mode)
	Enable WDT at different modes. More...
static enum wdt_timeout_period	wdt_get_timeout_period (void)
	More...
static bool	wdt_interrupt_mode_enabled (void)
	checks whether the Watchdog is enabled for interrupt mode More...
static void	wdt_reset_flag_clear (void)
	More...
static bool	wdt_reset_flag_is_set (void)
	More...
static bool	wdt_reset_interrupt_mode_enabled (void)
	checks whether the Watchdog is enabled for system reset and interrupt mode More...
void	wdt_reset_mcu (void)
	More...
void	wdt_set_interrupt_callback (wdt_callback_t callback)
	Set WDT timer overflow interrupt callback function. More...
void	wdt_set_timeout_period (enum wdt_timeout_period to_period)
	Set Watchdog timeout period. More...
static bool	wdt_system_reset_mode_enabled (void)
	checks whether the Watchdog is enabled for system reset mode More...
static void	wdt_timeout_interrupt_flag_clear (void)
	Clear Watchdog timeout interrupt flag. More...
static bool	wdt_timeout_interrupt_flag_is_set (void)
	Gets the status of Watchdog timeout interrupt flag. More...