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/*
* MIT License
*
* Copyright (c) 2020 Joey Castillo
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
////< @file watch_extint.h
#include "hal_ext_irq.h"
/** @addtogroup buttons Buttons
* @brief This section covers functions related to the three buttons: Light, Mode and Alarm.
* @details The buttons are the core input UI of the watch, and the way the user will interact with
* your application. They are active high, pulled down by the microcontroller, and triggered
* when one of the "pushers" brings a tab from the metal frame into contact with the edge
* of the board. Note that the buttons can only wake the watch from STANDBY mode (except maybe for the
* ALARM button; still working on that one). The external interrupt controller runs in
STANDBY mode, but it does not runin BACKUP mode; to wake from BACKUP, buttons will not cut it,
*/
/// @{
/** @brief Enables the external interrupt controller for use with the buttons.
* @note The BTN_ALARM button runs off of an interrupt in the the RTC controller, not the EIC. If your
* application ONLY makes use of the alarm button, you do not need to call this method; you can
* save ~5µA by leaving the EIC disabled and only registering a callback for BTN_ALARM.
*/
void watch_enable_buttons();
/** @brief Configures an external interrupt on one of the button pins.
* @param pin One of pins BTN_LIGHT, BTN_MODE or BTN_ALARM.
* @param callback The function you wish to have called when the button is pressed.
* @note The BTN_ALARM button runs off of an interrupt in the the RTC controller, not the EIC. This
* implementation detail should not make any difference to your app,
*/
void watch_register_button_callback(const uint8_t pin, ext_irq_cb_t callback);
/// @}
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