Atmel Software Framework

ac.h File Reference

Analog comparator (AC) functions.

Copyright (c) 2010-2015 Atmel Corporation. All rights reserved.

#include <stdint.h>
#include "compiler.h"
#include "parts.h"
#include "status_codes.h"
#include "pmic.h"

Data Structures

struct  ac_config
 Analog comparator channel configuration struct. More...
 

Typedefs

typedef void(* ac_callback_t )(AC_t *ac, uint8_t channel, enum ac_status_t status)
 Interrupt event callback function type. More...
 

Enumerations

enum  ac_int_level_t {
  AC_INT_LVL_OFF = 0x00,
  AC_INT_LVL_LO = 0x01,
  AC_INT_LVL_MED = 0x02,
  AC_INT_LVL_HI = 0x03
}
 Analog comparator interrupt levels. More...
 
enum  ac_interrupt_mode_t {
  AC_INT_MODE_BOTH_EDGES = AC_INTMODE_BOTHEDGES_gc,
  AC_INT_MODE_FALLING_EDGE = AC_INTMODE_FALLING_gc,
  AC_INT_MODE_RISING_EDGE = AC_INTMODE_RISING_gc,
  AC_INT_MODE_ABOVE_WINDOW = AC_WINTMODE_ABOVE_gc,
  AC_INT_MODE_INSIDE_WINDOW = AC_WINTMODE_INSIDE_gc,
  AC_INT_MODE_BELOW_WINDOW = AC_WINTMODE_BELOW_gc,
  AC_INT_MODE_OUTSIDE_WINDOW = AC_WINTMODE_OUTSIDE_gc
}
 Analog comparator interrupt modes. More...
 
enum  ac_mode_t {
  AC_MODE_SINGLE,
  AC_MODE_WINDOW
}
 Analog comparator modes. More...
 
enum  ac_status_t {
  AC_STATUS_ABOVE = AC_WSTATE_ABOVE_gc,
  AC_STATUS_BELOW = AC_WSTATE_BELOW_gc,
  AC_STATUS_INSIDE = AC_WSTATE_INSIDE_gc
}
 Analog comparator status values. More...
 

Functions

Management functions
void ac_write_config (AC_t *ac, uint8_t channel, struct ac_config *config)
 Write analog comparator configuration to hardware. More...
 
void ac_read_config (AC_t *ac, uint8_t channel, struct ac_config *config)
 Read analog comparator configuration from hardware. More...
 
enum ac_status_t ac_get_status (AC_t *ac, uint8_t channel)
 Get analog compare channel status. More...
 
void ac_enable (AC_t *ac, uint8_t channel)
 Enable an analog comparator channel. More...
 
void ac_disable (AC_t *ac, uint8_t channel)
 Disable an analog comparator channel. More...
 
Interrupt management functions
void ac_set_interrupt_callback (AC_t *ac, ac_callback_t callback)
 Set interrupt callback function. More...
 
static void ac_set_interrupt_mode (struct ac_config *config, enum ac_interrupt_mode_t mode)
 Set analog comparator channel interrupt mode. More...
 
static void ac_set_interrupt_level (struct ac_config *config, enum ac_int_level_t level)
 Set analog comparator channel interrupt level. More...
 
Configuration helper functions
static void ac_set_mode (struct ac_config *config, enum ac_mode_t mode)
 Set analog comparator mode. More...
 
static void ac_set_positive_reference (struct ac_config *config, AC_MUXPOS_t reference)
 Set analog comparator reference for positive line. More...
 
static void ac_set_negative_reference (struct ac_config *config, AC_MUXNEG_t reference)
 Set analog comparator reference for negative line. More...
 
static void ac_set_hysteresis (struct ac_config *config, AC_HYSMODE_t hysteresis)
 Set analog comparator hysteresis. More...
 
static void ac_set_voltage_scaler (struct ac_config *config, uint8_t scale)
 Set analog comparator voltage scale. More...