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External Interrupt Driver

See Quick Start Guide for the MEGARF ext int Driver.

This is a driver for the AVR MEGARF external interrupt. It provides functions for enabling, disabling and configuring the external interrupt modules.

Dependencies

This driver depends on the following modules:

Modules

 Related Project(s)
 In this section you can find all the projects related to the External Interrupt Driver.
 
 Quick Start Guide(s)
 In this section you can find a list of all Quick Start guides related to the External Interrupt Driver.
 

Macros

#define CLEAR_INT_FLAG(pin)   EIFR |= (1 << (pin & EXT_INT_PORT_MASK))
 Clears the int flag. More...
 
#define CLEAR_PCINT_FLAG0()   PCIFR |= (1 << PCIF0)
 
#define CLEAR_PCINT_FLAG1()   PCIFR |= (1 << PCIF1)
 
#define EXT_INT_PORT_MASK   0x07
 
#define INT_PIN_MASK(pin)   (1 << (pin & EXT_INT_PORT_MASK))
 Masks the required interrupt pin. More...
 

Typedefs

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

Enumerations

enum  ext_int_pins {
  EXT_INT0_PIN = IOPORT_CREATE_PIN(PORTD,0),
  EXT_INT1_PIN = IOPORT_CREATE_PIN(PORTD,1),
  EXT_INT2_PIN = IOPORT_CREATE_PIN(PORTD,2),
  EXT_INT3_PIN = IOPORT_CREATE_PIN(PORTD,3),
  EXT_INT4_PIN = IOPORT_CREATE_PIN(PORTE,4),
  EXT_INT5_PIN = IOPORT_CREATE_PIN(PORTE,5),
  EXT_INT6_PIN = IOPORT_CREATE_PIN(PORTE,6),
  EXT_INT7_PIN = IOPORT_CREATE_PIN(PORTE,7)
}
 
enum  ext_pcint_pins {
  PC_INT0_PIN = IOPORT_CREATE_PIN(PORTB,0),
  PC_INT1_PIN = IOPORT_CREATE_PIN(PORTB,1),
  PC_INT2_PIN = IOPORT_CREATE_PIN(PORTB,2),
  PC_INT3_PIN = IOPORT_CREATE_PIN(PORTB,3),
  PC_INT4_PIN = IOPORT_CREATE_PIN(PORTB,4),
  PC_INT5_PIN = IOPORT_CREATE_PIN(PORTB,5),
  PC_INT6_PIN = IOPORT_CREATE_PIN(PORTB,6),
  PC_INT7_PIN = IOPORT_CREATE_PIN(PORTB,7),
  PC_INT8_PIN = IOPORT_CREATE_PIN(PORTE,0)
}
 

Functions

void ext_int_clear_flag (ioport_pin_t pin)
 Clear ext Interrupt flag. More...
 
void ext_int_disable (ioport_pin_t pin)
 Disable ext Interrupt. More...
 
void ext_int_enable (ioport_pin_t pin)
 Enable ext Interrupt. More...
 
void ext_int_init (ioport_pin_t pin, enum ioport_sense trigmode)
 Initializes ext Interrupt for the required interrupt Pin and trigger level Configures the interrupt pin as input pin, enables the pull of the pin, set the trigger mode clears the interrupt flag before enabling and enables the interrupt. More...
 
void ext_int_pcint_clear_flag (ioport_pin_t pin)
 Clear ext Interrupt flag. More...
 
void ext_int_pcint_disable (ioport_pin_t pin)
 Disable ext PC Interrupt. More...
 
void ext_int_pcint_enable (ioport_pin_t pin)
 Enable ext PC Interrupt. More...
 
void ext_int_pcint_init (ioport_pin_t pin)
 Initializes ext pin change Interrupt for the required interrupt Pin Configures the interrupt pin as input pin, enables the pull of the pin, clears the interrupt flag before enabling and enables the interrupt. More...
 
void ext_int_set_interrupt_callback (ioport_pin_t ext_int, ext_int_callback_t callback)
 Set external interrupt callback function. More...
 

#define CLEAR_INT_FLAG (   pin)    EIFR |= (1 << (pin & EXT_INT_PORT_MASK))

Clears the int flag.

Referenced by ext_int_clear_flag().

#define CLEAR_PCINT_FLAG0 ( )    PCIFR |= (1 << PCIF0)

Referenced by ext_int_pcint_clear_flag().

#define CLEAR_PCINT_FLAG1 ( )    PCIFR |= (1 << PCIF1)

Referenced by ext_int_pcint_clear_flag().

#define EXT_INT_PORT_MASK   0x07

Referenced by run_set_functions_test().

#define INT_PIN_MASK (   pin)    (1 << (pin & EXT_INT_PORT_MASK))

Masks the required interrupt pin.

Referenced by ext_int_disable(), ext_int_enable(), ext_int_pcint_disable(), ext_int_pcint_enable(), and run_set_functions_test().

typedef void(* ext_int_callback_t)(void)

Interrupt event callback function type.

The interrupt handler can be configured to do a function callback, the callback function must match the ext_int_callback_t type.

enum ext_int_pins
Enumerator
EXT_INT0_PIN 

External Interrupt INT0

EXT_INT1_PIN 

External Interrupt INT1

EXT_INT2_PIN 

External Interrupt INT2

EXT_INT3_PIN 

External Interrupt INT3

EXT_INT4_PIN 

External Interrupt INT4

EXT_INT5_PIN 

External Interrupt INT5

EXT_INT6_PIN 

External Interrupt INT6

EXT_INT7_PIN 

External Interrupt INT7

enum ext_pcint_pins
Enumerator
PC_INT0_PIN 

External PC Interrupt PCINT0

PC_INT1_PIN 

External PC Interrupt PCINT1

PC_INT2_PIN 

External PC Interrupt PCINT2

PC_INT3_PIN 

External PC Interrupt PCINT3

PC_INT4_PIN 

External PC Interrupt PCINT4

PC_INT5_PIN 

External PC Interrupt PCINT5

PC_INT6_PIN 

External PC Interrupt PCINT6

PC_INT7_PIN 

External PC Interrupt PCINT7

PC_INT8_PIN 

External PC Interrupt PCINT8

void ext_int_clear_flag ( ioport_pin_t  pin)

Clear ext Interrupt flag.

Parameters
pininput External Interrupt Pin

References CLEAR_INT_FLAG.

Referenced by ext_int_init(), and run_set_functions_test().

void ext_int_disable ( ioport_pin_t  pin)

Disable ext Interrupt.

Parameters
pininput External Interrupt Pin

References INT_PIN_MASK.

Referenced by ext_int_init(), and run_set_functions_test().

void ext_int_enable ( ioport_pin_t  pin)

Enable ext Interrupt.

Parameters
pininput External Interrupt Pin

References INT_PIN_MASK.

Referenced by ext_int_init(), and run_set_functions_test().

void ext_int_init ( ioport_pin_t  pin,
enum ioport_sense  trigmode 
)

Initializes ext Interrupt for the required interrupt Pin and trigger level Configures the interrupt pin as input pin, enables the pull of the pin, set the trigger mode clears the interrupt flag before enabling and enables the interrupt.

Parameters
pin,trigmodeExternal Interrupt Pin and trigmode

References ext_int_clear_flag(), ext_int_disable(), ext_int_enable(), ioport_configure_pin(), IOPORT_DIR_INPUT, IOPORT_PULL_UP, and ioport_set_pin_sense_mode().

Referenced by main().

void ext_int_pcint_clear_flag ( ioport_pin_t  pin)

Clear ext Interrupt flag.

Parameters
pinExternal Interrupt Pin

References CLEAR_PCINT_FLAG0, CLEAR_PCINT_FLAG1, and PC_INT8_PIN.

Referenced by ext_int_pcint_init(), and run_set_functions_test().

void ext_int_pcint_disable ( ioport_pin_t  pin)

Disable ext PC Interrupt.

Parameters
pinExternal PC Interrupt Pin

References INT_PIN_MASK, and PC_INT8_PIN.

Referenced by ext_int_pcint_init(), and run_set_functions_test().

void ext_int_pcint_enable ( ioport_pin_t  pin)

Enable ext PC Interrupt.

Parameters
pinExternal PC Interrupt Pin

References INT_PIN_MASK, and PC_INT8_PIN.

Referenced by ext_int_pcint_init(), and run_set_functions_test().

void ext_int_pcint_init ( ioport_pin_t  pin)

Initializes ext pin change Interrupt for the required interrupt Pin Configures the interrupt pin as input pin, enables the pull of the pin, clears the interrupt flag before enabling and enables the interrupt.

Parameters
pinExternal Interrupt Pin and trigmode

References ext_int_pcint_clear_flag(), ext_int_pcint_disable(), ext_int_pcint_enable(), ioport_configure_pin(), IOPORT_DIR_INPUT, and IOPORT_PULL_UP.

Referenced by run_interrupt_trigger_test().

void ext_int_set_interrupt_callback ( ioport_pin_t  ext_int,
ext_int_callback_t  callback 
)

Set external interrupt callback function.

This function allows the caller to set and change the interrupt callback function. Without setting a callback function the interrupt handler in the driver will only clear the interrupt flags.

Parameters
ext_intinterrupt number
callbackReference to a callback function

References EXT_INT0_PIN, EXT_INT1_PIN, EXT_INT2_PIN, EXT_INT3_PIN, EXT_INT4_PIN, EXT_INT5_PIN, EXT_INT6_PIN, EXT_INT7_PIN, ext_int_int0_callback, ext_int_int1_callback, ext_int_int2_callback, ext_int_int3_callback, ext_int_int4_callback, ext_int_int5_callback, ext_int_int6_callback, ext_int_int7_callback, ext_int_pcint0_callback, ext_int_pcint1_callback, PC_INT0_PIN, PC_INT7_PIN, and PC_INT8_PIN.

Referenced by main(), and run_interrupt_trigger_test().

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