// Copyright 2016-2017 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <stdint.h>
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#include "esp_err.h"
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#include "esp_intr_alloc.h"
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/**
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* @brief Register a handler for specific RTC_CNTL interrupts
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*
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* Multiple handlers can be registered using this function. Whenever an
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* RTC interrupt happens, all handlers with matching rtc_intr_mask values
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* will be called.
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*
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* @param handler handler function to call
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* @param handler_arg argument to be passed to the handler
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* @param rtc_intr_mask combination of RTC_CNTL_*_INT_ENA bits indicating the
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* sources to call the handler for
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* @return
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* - ESP_OK on success
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* - ESP_ERR_NO_MEM not enough memory to allocate handler structure
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* - other errors returned by esp_intr_alloc
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*/
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esp_err_t rtc_isr_register(intr_handler_t handler, void* handler_arg,
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uint32_t rtc_intr_mask);
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/**
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* @brief Deregister the handler previously registered using rtc_isr_register
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* @param handler handler function to call (as passed to rtc_isr_register)
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* @param handler_arg argument of the handler (as passed to rtc_isr_register)
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* @return
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* - ESP_OK on success
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* - ESP_ERR_INVALID_STATE if a handler matching both handler and
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* handler_arg isn't registered
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*/
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esp_err_t rtc_isr_deregister(intr_handler_t handler, void* handler_arg);
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