1 /* 2 * Copyright (c) 2022 Talkweb Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #include "watch_dog.h" 17 18 IWDG_HandleTypeDef hiwdg; 19 watch_dog_init(unsigned int timeout)20int watch_dog_init(unsigned int timeout) 21 { 22 if (timeout < WATCHDOG_MIN_TIMEOUT || timeout > WATCHDOG_MAX_TIMEOUT) 23 return -1; 24 hiwdg.Instance = IWDG; 25 hiwdg.Init.Prescaler = IWDG_PRESCALER_32; 26 hiwdg.Init.Reload = timeout - 1; 27 HAL_IWDG_Init(&hiwdg); 28 __HAL_IWDG_START(&hiwdg); 29 return 0; 30 } 31 feed_dog(void)32void feed_dog(void) 33 { 34 #ifdef LOSCFG_WATCH_DOG 35 HAL_IWDG_Refresh(&hiwdg); 36 #endif 37 }