/***************************************************************************//** * \file cy_wdg.h * * \brief * Provides a high level interface for interacting with the Watchdog Timer. * This interface abstracts out the chip specific details. If any chip specific * functionality is necessary, or performance is critical the low level functions * can be used directly. * ******************************************************************************** * \copyright * Copyright 2019-2020 Cypress Semiconductor Corporation * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *******************************************************************************/ #pragma once #if defined(__cplusplus) extern "C" { #endif #include #include #include "cy_result.h" /** Initialize and start the WDT * * The specified timeout must be at least 1ms and at most the WDT's maximum timeout (see cy_wdg_get_max_timeout_ms()). * @param[inout] timeout_ms The time in milliseconds before the WDT times out (1ms - max) (see cy_wdg_get_max_timeout_ms()) * @return The status of the init request * * Returns CY_RSLT_SUCCESS if the operation was successfull. */ cy_rslt_t cy_wdg_init(uint32_t timeout_ms); /** Free the WDT * * Powers down the WDT. * After calling this function no other WDT functions should be called except * cy_wdg_init(). */ void cy_wdg_free(); /** Resets the WDT * * This function should be called periodically to prevent the WDT from timing out and resetting the device. */ void cy_wdg_kick(); /** Start (enable) the WDT * * @return The status of the start request */ void cy_wdg_start(); /** Stop (disable) the WDT * * @return The status of the stop request */ void cy_wdg_stop(); /** Get the WDT timeout * * Gets the time in milliseconds before the WDT times out. * @return The time in milliseconds before the WDT times out */ uint32_t cy_wdg_get_timeout_ms(); /** Gets the maximum WDT timeout in milliseconds * * @return The maximum timeout for the WDT */ uint32_t cy_wdg_get_max_timeout_ms(void); #if defined(__cplusplus) } #endif