tcc_callback.c File Reference

SAM TCC - Timer Counter for Control Applications Callback Driver.

Copyright (c) 2013-2018 Microchip Technology Inc. and its subsidiaries.

#include "tcc_callback.h"

Macros
#define	_TCC_INTERRUPT_HANDLER(n, m)
#define	_TCC_INTERRUPT_VECT_NUM(n, unused)   SYSTEM_INTERRUPT_MODULE_TCC##n,
#define	_TCC_INTFLAG_MC(n, dummy)   TCC_INTFLAG_MC##n,

Functions
static enum system_interrupt_vector	_tcc_interrupt_get_interrupt_vector (uint32_t inst_num)
void	_tcc_interrupt_handler (uint8_t module_index)
void	tcc_disable_callback (struct tcc_module *const module, const enum tcc_callback callback_type)
	Disables callback. More...
void	tcc_enable_callback (struct tcc_module *const module, const enum tcc_callback callback_type)
	Enables callback. More...
enum status_code	tcc_register_callback (struct tcc_module *const module, tcc_callback_t callback_func, const enum tcc_callback callback_type)
	Registers a callback. More...
enum status_code	tcc_unregister_callback (struct tcc_module *const module, const enum tcc_callback callback_type)
	Unregisters a callback. More...

Variables
void *	_tcc_instances [TCC_INST_NUM]
const uint32_t	_tcc_intflag [TCC_CALLBACK_N]

#define _TCC_INTERRUPT_HANDLER	(		n,
			m
	)

Value:

void TCC##n##_Handler(void) \
        { \
			_tcc_interrupt_handler(n); \
        }

ISR handler for TCC

Auto-generate a set of interrupt handlers for each TCC in the device.

#define _TCC_INTERRUPT_VECT_NUM	(		n,
			unused
	)		SYSTEM_INTERRUPT_MODULE_TCC##n,

Referenced by _tcc_interrupt_get_interrupt_vector().

#define _TCC_INTFLAG_MC	(		n,
			dummy
	)		TCC_INTFLAG_MC##n,

static enum system_interrupt_vector _tcc_interrupt_get_interrupt_vector ( uint32_t  inst_num )

static

Get the interrupt vector for the given device instance

Parameters

[in]

The

TCC module instance number

Returns

Interrupt vector for of the given TCC module instance.

References _TCC_INTERRUPT_VECT_NUM, and MREPEAT.

Referenced by tcc_disable_callback(), and tcc_enable_callback().

void _tcc_interrupt_handler

(

uint8_t

module_index

)

Interrupt handler for the TCC module

Handles interrupts as they occur, it will run the callback functions that are registered and enabled.

Parameters

[in]

module_index

ID of the TCC instance calling the interrupt handler

References _tcc_instances, _tcc_intflag, tcc_module::callback, tcc_module::enable_callback_mask, tcc_module::hw, and tcc_module::register_callback_mask.

void tcc_disable_callback	(	struct tcc_module *const	module,
		const enum tcc_callback	callback_type
	)

Disables callback.

Disables the callback function registered by the tcc_register_callback, and the callback will not be called from the interrupt routine. The function will also disable the appropriate interrupts.

Parameters

[in]	module	Pointer to TCC software instance struct
[in]	callback_type	Callback type given by an enum

References _tcc_get_inst_index(), _tcc_interrupt_get_interrupt_vector(), _tcc_intflag, Assert, tcc_module::enable_callback_mask, tcc_module::hw, and system_interrupt_disable().

void tcc_enable_callback	(	struct tcc_module *const	module,
		const enum tcc_callback	callback_type
	)

Enables callback.

Enables the callback function registered by the tcc_register_callback. The callback function will be called from the interrupt handler when the conditions for the callback type are met. This function will also enable the appropriate interrupts.

Parameters

[in]	module	Pointer to TCC software instance struct
[in]	callback_type	Callback type given by an enum

References _tcc_get_inst_index(), _tcc_interrupt_get_interrupt_vector(), _tcc_intflag, Assert, tcc_module::enable_callback_mask, tcc_module::hw, and system_interrupt_enable().

Referenced by sw_timer_init().

enum status_code tcc_register_callback	(	struct tcc_module *const	module,
		tcc_callback_t	callback_func,
		const enum tcc_callback	callback_type
	)

Registers a callback.

Registers a callback function which is implemented by the user.

Note

The callback must be enabled by tcc_enable_callback, in order for the interrupt handler to call it when the conditions for the callback type is met.

Parameters

[in]	module	Pointer to TCC software instance struct
[in]	callback_func	Pointer to callback function
[in]	callback_type	Callback type given by an enum

References _tcc_intflag, Assert, tcc_module::callback, tcc_module::register_callback_mask, and STATUS_OK.

Referenced by sw_timer_init().

enum status_code tcc_unregister_callback	(	struct tcc_module *const	module,
		const enum tcc_callback	callback_type
	)

Unregisters a callback.

Unregisters a callback function implemented by the user. The callback should be disabled before it is unregistered.

Parameters

[in]	module	Pointer to TCC software instance struct
[in]	callback_type	Callback type given by an enum

References _tcc_intflag, Assert, tcc_module::callback, NULL, tcc_module::register_callback_mask, and STATUS_OK.

void* _tcc_instances[TCC_INST_NUM]

Referenced by _tcc_interrupt_handler(), and tcc_init().

const uint32_t _tcc_intflag[TCC_CALLBACK_N]

Initial value:

= {
    TCC_INTFLAG_OVF,
    TCC_INTFLAG_TRG,
    TCC_INTFLAG_CNT,
    TCC_INTFLAG_ERR,
    TCC_INTFLAG_FAULTA,
    TCC_INTFLAG_FAULTB,
    TCC_INTFLAG_FAULT0,
    TCC_INTFLAG_FAULT1,
#define _TCC_INTFLAG_MC(n,dummy) 
    


}

Referenced by _tcc_interrupt_handler(), tcc_disable_callback(), tcc_enable_callback(), tcc_register_callback(), and tcc_unregister_callback().