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Diff: TARGET_SAMD21G18A/TOOLCHAIN_GCC_ARM/tc_interrupt.h
- Revision:
- 171:3a7713b1edbc
- Parent:
- 111:4336505e4b1c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_SAMD21G18A/TOOLCHAIN_GCC_ARM/tc_interrupt.h Thu Nov 08 11:45:42 2018 +0000 @@ -0,0 +1,175 @@ +/** + * \file + * + * \brief SAM TC - Timer Counter Callback Driver + * + * Copyright (C) 2013-2015 Atmel Corporation. All rights reserved. + * + * \asf_license_start + * + * \page License + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * 3. The name of Atmel may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 4. This software may only be redistributed and used in connection with an + * Atmel microcontroller product. + * + * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE + * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * \asf_license_stop + * + */ + +/* + * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a> + */ + +#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 */