The analog comparator allows a system wakeup to be triggered by the voltage level of a differential or single-ended analog input applied through the port pins.

This module also contains functions for configuring and enabling the comparator.

Enumerations
enum	hal_ancmp_input_channel_t { HAL_ANCMP_INP_AIN0 = 0x00, HAL_ANCMP_INP_AIN1 = 0x01, HAL_ANCMP_INP_AIN2 = 0x02, HAL_ANCMP_INP_AIN3 = 0x03, HAL_ANCMP_INP_AIN4 = 0x04, HAL_ANCMP_INP_AIN5 = 0x05, HAL_ANCMP_INP_AIN6 = 0x06, HAL_ANCMP_INP_AIN7 = 0x07, HAL_ANCMP_INP_AIN8 = 0x08, HAL_ANCMP_INP_AIN9 = 0x09, HAL_ANCMP_INP_AIN10 = 0x0A, HAL_ANCMP_INP_AIN11 = 0x0B, HAL_ANCMP_INP_AIN12 = 0x0C, HAL_ANCMP_INP_AIN13 = 0x0D }
enum	hal_ancmp_pol_t { HAL_ANCMP_NON_INVERTING = 0x00, HAL_ANCMP_INVERTING = 0x01 }
enum	hal_ancmp_ref_scale_t { HAL_ANCMP_REF_SCALE_25 = 0x00, HAL_ANCMP_REF_SCALE_50 = 0x01, HAL_ANCMP_REF_SCALE_75 = 0x02, HAL_ANCMP_REF_SCALE_100 = 0x03 }
enum	hal_ancmp_ref_t { HAL_ANCMP_REF_VDD = 0x00, HAL_ANCMP_REF_EXT = 0x01 }
Functions
void	hal_ancmp_set_polarity (hal_ancmp_pol_t polarity)
void	hal_ancmp_set_ref_voltage_scale (hal_ancmp_ref_scale_t scale)
void	hal_ancmp_set_reference (hal_ancmp_ref_t ref)
void	hal_ancmp_set_input_channel (hal_ancmp_input_channel_t chsel)
void	hal_ancmp_enable (_Bool en)

Enumeration Type Documentation

enum hal_ancmp_input_channel_t

An enum describing the input channel of the analog comparator.

Enumerator:

HAL_ANCMP_INP_AIN0
HAL_ANCMP_INP_AIN1
HAL_ANCMP_INP_AIN2
HAL_ANCMP_INP_AIN3
HAL_ANCMP_INP_AIN4
HAL_ANCMP_INP_AIN5
HAL_ANCMP_INP_AIN6
HAL_ANCMP_INP_AIN7
HAL_ANCMP_INP_AIN8
HAL_ANCMP_INP_AIN9
HAL_ANCMP_INP_AIN10
HAL_ANCMP_INP_AIN11
HAL_ANCMP_INP_AIN12
HAL_ANCMP_INP_AIN13

Definition at line 36 of file hal_ancmp.h.

             {
  HAL_ANCMP_INP_AIN0   = HAL_INP_AIN0,
  HAL_ANCMP_INP_AIN1   = HAL_INP_AIN1,
  HAL_ANCMP_INP_AIN2   = HAL_INP_AIN2,
  HAL_ANCMP_INP_AIN3   = HAL_INP_AIN3,
  HAL_ANCMP_INP_AIN4   = HAL_INP_AIN4,
  HAL_ANCMP_INP_AIN5   = HAL_INP_AIN5,
  HAL_ANCMP_INP_AIN6   = HAL_INP_AIN6,
  HAL_ANCMP_INP_AIN7   = HAL_INP_AIN7,
  HAL_ANCMP_INP_AIN8   = HAL_INP_AIN8,
  HAL_ANCMP_INP_AIN9   = HAL_INP_AIN9, 
  HAL_ANCMP_INP_AIN10  = HAL_INP_AIN10,
  HAL_ANCMP_INP_AIN11  = HAL_INP_AIN11,
  HAL_ANCMP_INP_AIN12  = HAL_INP_AIN12,
  HAL_ANCMP_INP_AIN13  = HAL_INP_AIN13
} hal_ancmp_input_channel_t;

enum hal_ancmp_pol_t

An enum describing the reference of the analog comparator.

Enumerator:

HAL_ANCMP_NON_INVERTING	Non-inverting output polarity
HAL_ANCMP_INVERTING	Inverting output polarity

Definition at line 56 of file hal_ancmp.h.

             {
  HAL_ANCMP_NON_INVERTING = 0x00,  
  HAL_ANCMP_INVERTING     = 0x01   
} hal_ancmp_pol_t;

enum hal_ancmp_ref_scale_t

An enum describing the reference of the analog comparator.

Enumerator:

HAL_ANCMP_REF_SCALE_25	Reference voltage scaling (25%)
HAL_ANCMP_REF_SCALE_50	Reference voltage scaling (50%)
HAL_ANCMP_REF_SCALE_75	Reference voltage scaling (75%)
HAL_ANCMP_REF_SCALE_100	Reference voltage scaling (100%)

Definition at line 64 of file hal_ancmp.h.

             {
  HAL_ANCMP_REF_SCALE_25  = 0x00,      
  HAL_ANCMP_REF_SCALE_50  = 0x01,      
  HAL_ANCMP_REF_SCALE_75  = 0x02,      
  HAL_ANCMP_REF_SCALE_100 = 0x03,      
} hal_ancmp_ref_scale_t;

enum hal_ancmp_ref_t

An enum describing the reference of the analog comparator.

Enumerator:

HAL_ANCMP_REF_VDD	VDD as reference
HAL_ANCMP_REF_EXT	External reference

Definition at line 74 of file hal_ancmp.h.

             {
  HAL_ANCMP_REF_VDD = 0x00,            
  HAL_ANCMP_REF_EXT = 0x01             
} hal_ancmp_ref_t;

Function Documentation

void hal_ancmp_set_polarity ( hal_ancmp_pol_t polarity )

Function to set the output polarity. Use this function set the output polarity of the analog comparator.

Parameters:

polarity The output polarity

Definition at line 25 of file hal_ancmp.c.

{ // Update "polarity" bit
  COMPCON = (COMPCON & 0xEF) | (((uint8_t)polarity << 4) & ~0xEF);   
}

void hal_ancmp_set_ref_voltage_scale ( hal_ancmp_ref_scale_t scale )

Function to set the reference voltage scaling. Use this function to set reference voltage scaling of the analog comparator.

Parameters:

scale The reference voltage scaling

Definition at line 30 of file hal_ancmp.c.

{ // Update "refscale" bits
  COMPCON = (COMPCON & 0xF3) | (((uint8_t)scale << 2) & ~0xF3);   
}

void hal_ancmp_set_reference ( hal_ancmp_ref_t ref )

Function to set the reference of the analog comparator. Use this function to set the reference of the analog comparator.

Parameters:

ref	The reference of the analog comparator

Definition at line 35 of file hal_ancmp.c.

{ // Update "cmpref" bit
  COMPCON = (COMPCON & 0xFD) | (((uint8_t)ref << 1) & ~0xFD);   
}

void hal_ancmp_set_input_channel ( hal_ancmp_input_channel_t chsel )

Function to set the input channel of the analog comparator. This function uses the ADC HAL to set the input channel of the analog comp.

Parameters:

chsel The input channel of the analog comparator

Definition at line 40 of file hal_ancmp.c.

{ 
  hal_adc_input_channel_t channel;
  channel = (hal_adc_input_channel_t)chsel;
  hal_adc_set_input_channel(channel);       
}

void hal_ancmp_enable ( _Bool en )

Function to enable the analog comparator. Use this function to enable the analog comparator.

Parameters:

en	True to enable, false to disable the analog comparator

< The value of bit 0

Definition at line 47 of file hal_ancmp.c.

{
  if(en)
  {
    COMPCON = COMPCON | BIT_0;                // Set "enable" bit
  }
  else
  {
    COMPCON = COMPCON & ~BIT_0;               // Clear "enable" bit
  }
}

Analog comparator (hal_ancmp) [nRF24LE1 HAL]

Enumerations

Functions

Enumeration Type Documentation

Function Documentation

Analog comparator (hal_ancmp)
[nRF24LE1 HAL]