File content as of revision 592:a274ee790e56:

#ifndef TC_INTERRUPT_H_INCLUDED
#define TC_INTERRUPT_H_INCLUDED

#include "tc.h"
#include <system_interrupt.h>

#ifdef __cplusplus
extern "C" {
#endif

#if !defined(__DOXYGEN__)
extern void *_tc_instances[TC_INST_NUM];

#  define _TC_INTERRUPT_VECT_NUM(n, unused) \
		  SYSTEM_INTERRUPT_MODULE_TC##n,
/**
 * \internal Get the interrupt vector for the given device instance
 *
 * \param[in] TC module instance number.
 *
 * \return Interrupt vector for of the given TC module instance.
 */
static enum system_interrupt_vector _tc_interrupt_get_interrupt_vector(
    uint32_t inst_num)
{
    static uint8_t tc_interrupt_vectors[TC_INST_NUM] = {
#if (SAML21E) || (SAML21G)
        SYSTEM_INTERRUPT_MODULE_TC0,
        SYSTEM_INTERRUPT_MODULE_TC1,
        SYSTEM_INTERRUPT_MODULE_TC4
#else
        MRECURSION(TC_INST_NUM, _TC_INTERRUPT_VECT_NUM, TC_INST_MAX_ID)
#endif
    };

    return (enum system_interrupt_vector)tc_interrupt_vectors[inst_num];
}
#endif /* !defined(__DOXYGEN__) */

/**
 * \name Callback Management
 * {@
 */

enum status_code tc_register_callback(
    struct tc_module *const module,
    tc_callback_t callback_func,
    const enum tc_callback callback_type);

enum status_code tc_unregister_callback(
    struct tc_module *const module,
    const enum tc_callback callback_type);

/**
 * \brief Enables callback.
 *
 * Enables the callback function registered by the \ref
 * tc_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.
 *
 * \param[in]     module Pointer to TC software instance struct
 * \param[in]     callback_type Callback type given by an enum
 */
static inline void tc_enable_callback(
    struct tc_module *const module,
    const enum tc_callback callback_type)
{
    /* Sanity check arguments */
    Assert(module);


    /* Enable interrupts for this TC module */
    system_interrupt_enable(_tc_interrupt_get_interrupt_vector(_tc_get_inst_index(module->hw)));

    /* Enable callback */
    if (callback_type == TC_CALLBACK_CC_CHANNEL0) {
        module->enable_callback_mask |= TC_INTFLAG_MC(1);
        module->hw->COUNT8.INTENSET.reg = TC_INTFLAG_MC(1);
    } else if (callback_type == TC_CALLBACK_CC_CHANNEL1) {
        module->enable_callback_mask |= TC_INTFLAG_MC(2);
        module->hw->COUNT8.INTENSET.reg = TC_INTFLAG_MC(2);
    } else {
        module->enable_callback_mask |= (1 << callback_type);
        module->hw->COUNT8.INTENSET.reg = (1 << callback_type);
    }
}

/**
 * \brief Disables callback.
 *
 * Disables the callback function registered by the \ref
 * tc_register_callback, and the callback will not be called from the
 * interrupt routine. The function will also disable the appropriate
 * interrupts.
 *
 * \param[in]     module Pointer to TC software instance struct
 * \param[in]     callback_type Callback type given by an enum
 */
static inline void tc_disable_callback(
    struct tc_module *const module,
    const enum tc_callback callback_type)
{
    /* Sanity check arguments */
    Assert(module);

    /* Disable callback */
    if (callback_type == TC_CALLBACK_CC_CHANNEL0) {
        module->hw->COUNT8.INTENCLR.reg = TC_INTFLAG_MC(1);
        module->enable_callback_mask &= ~TC_INTFLAG_MC(1);
    } else if (callback_type == TC_CALLBACK_CC_CHANNEL1) {
        module->hw->COUNT8.INTENCLR.reg = TC_INTFLAG_MC(2);
        module->enable_callback_mask &= ~TC_INTFLAG_MC(2);
    } else {
        module->hw->COUNT8.INTENCLR.reg = (1 << callback_type);
        module->enable_callback_mask &= ~(1 << callback_type);
    }
}

/**
 * @}
 */

#ifdef __cplusplus
}
#endif

#endif /* TC_INTERRUPT_H_INCLUDED */