ast.h File Reference

SAM Asynchronous Timer (AST) driver.

Copyright (c) 2012-2018 Microchip Technology Inc. and its subsidiaries.

#include <compiler.h>

Data Structures
struct	ast_calendar
struct	ast_calv
	Description for Calendar Field. More...
struct	ast_config
	AST configuration. More...

Macros
#define	AST_POLL_TIMEOUT   10000
	Timeout to prevent code hang in clock initialization. More...
Predefined PSEL Values
#define	AST_PSEL_32KHZ_1HZ   14
	The PSEL value to set the AST source clock (after the prescaler) to 1Hz, when using an external 32-kHz crystal. More...
#define	AST_PSEL_RC_1_76HZ   15
	The PSEL value to set the AST source clock (after the prescaler) to 1.76Hz when using the internal RC oscillator (~ 115kHz) More...

Typedefs
typedef void(*	ast_callback_t )(void)
	AST interrupt callback. More...
typedef enum ast_event_source	ast_event_source_t
	AST event source. More...
typedef enum ast_interrupt_source	ast_interrupt_source_t
	AST interrupt source. More...
typedef enum ast_mode	ast_mode_t
	AST Calendar Mode. More...
typedef enum ast_oscillator_type	ast_oscillator_type_t
	AST Oscillator type. More...
typedef enum ast_wakeup_source	ast_wakeup_source_t
	AST wake-up source. More...

Enumerations
enum	ast_event_source {   AST_EVENT_ALARM = 0,   AST_EVENT_PER,   AST_EVENT_OVF }
	AST event source. More...
enum	ast_interrupt_source {   AST_INTERRUPT_ALARM = 0,   AST_INTERRUPT_PER,   AST_INTERRUPT_OVF,   AST_INTERRUPT_READY,   AST_INTERRUPT_CLKREADY }
	AST interrupt source. More...
enum	ast_mode {   AST_COUNTER_MODE = 0,   AST_CALENDAR_MODE = 1 }
	AST Calendar Mode. More...
enum	ast_oscillator_type {   AST_OSC_RC = 0,   AST_OSC_32KHZ = 1,   AST_OSC_PB = 2,   AST_OSC_GCLK = 3,   AST_OSC_1KHZ = 4 }
	AST Oscillator type. More...
enum	ast_wakeup_source {   AST_WAKEUP_ALARM = 0,   AST_WAKEUP_PER,   AST_WAKEUP_OVF }
	AST wake-up source. More...

Functions
void	ast_clear_interrupt_flag (Ast *ast, ast_interrupt_source_t source)
	Clear an AST interrupt status flag. More...
void	ast_clear_prescalar (Ast *ast)
	Clear the AST periodic prescaler counter to zero. More...
uint32_t	ast_configure_digital_tuner (Ast *ast, uint32_t input_freq, uint32_t tuned_freq)
	Tune the AST prescaler frequency to the desired frequency. More...
void	ast_disable (Ast *ast)
	Disable the AST counter and module. More...
void	ast_disable_digital_tuner (Ast *ast)
	Disable the AST digital tuner. More...
void	ast_disable_event (Ast *ast, ast_event_source_t source)
	Disable an AST event. More...
void	ast_disable_interrupt (Ast *ast, ast_interrupt_source_t source)
	Disable an AST interrupt. More...
void	ast_disable_wakeup (Ast *ast, ast_wakeup_source_t source)
	Disable an AST asynchronous wake-up source. More...
void	ast_enable (Ast *ast)
	Enable the AST module. More...
void	ast_enable_counter_clear_on_alarm (Ast *ast, uint8_t alarm_channel)
	Enable the option to clear the counter on an AST alarm. More...
void	ast_enable_event (Ast *ast, ast_event_source_t source)
	Enable an AST event. More...
void	ast_enable_interrupt (Ast *ast, ast_interrupt_source_t source)
	Enable an AST interrupt. More...
void	ast_enable_wakeup (Ast *ast, ast_wakeup_source_t source)
	Enable an AST asynchronous wake-up source. More...
void	ast_init_digital_tuner (Ast *ast, bool add, uint8_t value, uint8_t exp)
	Initialize the AST digital tuner. More...
static bool	ast_is_busy (Ast *ast)
	Check the busy status of AST. More...
static bool	ast_is_clkbusy (Ast *ast)
	Check the busy status of the AST clock. More...
bool	ast_is_enabled (Ast *ast)
	Check the status of the AST module. More...
struct ast_calendar	ast_read_calendar_value (Ast *ast)
	Get the AST current calendar value. More...
static uint32_t	ast_read_counter_value (Ast *ast)
	Get the AST current counter value. More...
static uint32_t	ast_read_interrupt_mask (Ast *ast)
	Get the AST interrupt mask value. More...
static uint32_t	ast_read_status (Ast *ast)
	Get the status of AST. More...
void	ast_set_callback (Ast *ast, ast_interrupt_source_t source, ast_callback_t callback, uint8_t irq_line, uint8_t irq_level)
	Set callback for AST interrupts. More...
uint32_t	ast_set_config (Ast *ast, struct ast_config *ast_conf)
	Initialize and enable the AST module in Calendar Mode or Counter Mode. More...
static void	ast_start (Ast *ast)
	Start the AST counter. More...
static void	ast_stop (Ast *ast)
	Stop the AST counter. More...
void	ast_write_alarm0_value (Ast *ast, uint32_t alarm_value)
	Set the AST alarm0 value. More...
void	ast_write_calendar_value (Ast *ast, struct ast_calendar calendar)
	Set the AST current calendar value. More...
void	ast_write_counter_value (Ast *ast, uint32_t ast_counter)
	Set the AST current counter value. More...
void	ast_write_periodic0_value (Ast *ast, uint32_t pir)
	Set the AST periodic0 value. More...