External IRQ

Collaboration diagram for External IRQ:

Data Structures
struct	irq_config_t

Typedefs
typedef void(*	irq_handler_cb_t) (void *Module, const struct gpio_ext_t *GpioExt, uint8_t Pin)

Enumerations

Functions
void	IrqTriggerInternal (uint8_t Pin)
void	IrqTriggerExternal (void)
void	IrqEnableInternal (uint8_t Pin, enum irq_mode_t Mode)
void	IrqRegisterExternal (uint8_t Pin)
void	GpioInterruptHandler (void)
	Name: GpioInterruptHandler GPIO interrupt handler Must be called from GPIOTE_Handler.

Variables
const uint8_t	IntIrqDispatch [32]
const uint8_t	ExtIrqDispatch []
const struct irq_config_t	IrqConfig []
const struct gpio_ext_t *	GpioExpanders []

Detailed Description

Typedef Documentation

typedef void(* irq_handler_cb_t) (void *Module, const struct gpio_ext_t *GpioExt, uint8_t Pin)

IRQ handler callback function prototype.

Parameters

Module	User-defined data
IoExpander	Pointer to the instance of system IO expanders which has triggered the interrupt. NULL for built-in MCU GPIO.
Pin	Pin number which has triggered the interrupt.

Definition at line 29 of file irq.h.

Enumeration Type Documentation

enum irq_mode_t

IRQ mode

Enumerator
IRQ_MODE_DISABLED	IRQ is disabled
IRQ_MODE_RISING	Rising edge sense
IRQ_MODE_FALLING	Falling edge sense

Definition at line 46 of file irq.h.

Function Documentation

void IrqTriggerInternal

(

uint8_t

Pin

)

Trigger an internal IRQ for the pin

Parameters

Pin	Pin number

void IrqTriggerExternal

(

void

)

Trigger an external interrupt

Referenced by GpioExtPinRead().

void IrqEnableInternal	(	uint8_t	Pin,
		enum irq_mode_t	Mode
	)

Enables or disables internal interrupt for the selected pin

void IrqRegisterExternal

(

uint8_t

Pin

)

Mark an interrrupt pin as an external interrupt trigger

Parameters

Pin	Pin number

Variable Documentation

const uint8_t IntIrqDispatch[32]

IRQ configuration database index for built-in MCU GPIO interrupts Each entry in the table should represent an offset in the IrqConfig table plus one

const uint8_t ExtIrqDispatch[]

IRQ configuration database index for IO expanders interrupts Each entry in the table should represent an offset in the IrqConfig table plus one

const struct irq_config_t IrqConfig[]

IRQ configuration database.

const struct gpio_ext_t* GpioExpanders[]

NULL-terminated array of GPIO expanders