1 /* 2 * Copyright (c) 2022 ASR Microelectronics (Shanghai) Co., Ltd. All rights reserved. 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 #ifndef _DUET_WDG_H_ 17 #define _DUET_WDG_H_ 18 #include <stdint.h> 19 20 typedef struct { 21 uint32_t timeout; /* Watchdag timeout */ 22 } duet_wdg_config_t; 23 24 typedef struct { 25 uint8_t port; /* wdg port */ 26 duet_wdg_config_t config; /* wdg config */ 27 void *priv; /* priv data */ 28 } duet_wdg_dev_t; 29 30 /** 31 * This function will initialize the on board CPU hardware watch dog 32 * 33 * @param[in] wdg the watch dog device 34 * 35 * @return 0 : on success, EIO : if an error occurred with any step 36 */ 37 int32_t duet_wdg_init(duet_wdg_dev_t *wdg); 38 39 /** 40 * Reload watchdog counter. 41 * 42 * @param[in] wdg the watch dog device 43 */ 44 void duet_wdg_reload(duet_wdg_dev_t *wdg); 45 46 /** 47 * This function performs any platform-specific cleanup needed for hardware watch dog. 48 * 49 * @param[in] wdg the watch dog device 50 * 51 * @return 0 : on success, EIO : if an error occurred with any step 52 */ 53 int32_t duet_wdg_finalize(duet_wdg_dev_t *wdg); 54 55 #endif // _LEGA_WDG_H_