1 // Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD 2 // 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 #pragma once 16 17 #ifdef __cplusplus 18 extern "C" { 19 #endif 20 21 typedef enum { 22 WDT_RWDT = 0, /*!< RTC Watchdog Timer (RWDT) */ 23 WDT_MWDT0, /*!< Main System Watchdog Timer (MWDT) of Timer Group 0 */ 24 WDT_MWDT1, /*!< Main System Watchdog Timer (MWDT) of Timer Group 1 */ 25 } wdt_inst_t; 26 27 /** 28 * @brief Stages of a Watchdog Timer. A WDT has 4 stages. 29 */ 30 typedef enum { 31 WDT_STAGE0 = 0, /*!< Stage 0 */ 32 WDT_STAGE1 = 1, /*!< Stage 1 */ 33 WDT_STAGE2 = 2, /*!< Stage 2 */ 34 WDT_STAGE3 = 3 /*!< Stage 3 */ 35 } wdt_stage_t; 36 37 /** 38 * @brief Behavior of the WDT stage if it times out 39 * 40 * @note These enum values should be compatible with the corresponding register 41 * field values. 42 */ 43 typedef enum { 44 WDT_STAGE_ACTION_OFF = 0, /*!< Disabled. This stage will have no effects on the system. */ 45 WDT_STAGE_ACTION_INT = 1, /*!< Trigger an interrupt when the stage expires. */ 46 WDT_STAGE_ACTION_RESET_CPU = 2, /*!< Reset a CPU core when the stage expires. */ 47 WDT_STAGE_ACTION_RESET_SYSTEM = 3, /*!< Reset the main system when the stage expires. This includes the CPU and all peripherals. The RTC is an exception and will not be reset. */ 48 WDT_STAGE_ACTION_RESET_RTC = 4, /*!< Reset the main system and the RTC when the stage expires. ONLY AVAILABLE FOR RWDT */ 49 } wdt_stage_action_t; 50 51 /** 52 * @brief Length of CPU or System Reset signals 53 * 54 * @note These enum values should be compatible with the corresponding register 55 * field values. 56 */ 57 typedef enum { 58 WDT_RESET_SIG_LENGTH_100ns = 0, /*!< 100 ns */ 59 WDT_RESET_SIG_LENGTH_200ns = 1, /*!< 200 ns */ 60 WDT_RESET_SIG_LENGTH_300ns = 2, /*!< 300 ns */ 61 WDT_RESET_SIG_LENGTH_400ns = 3, /*!< 400 ns */ 62 WDT_RESET_SIG_LENGTH_500ns = 4, /*!< 500 ns */ 63 WDT_RESET_SIG_LENGTH_800ns = 5, /*!< 800 ns */ 64 WDT_RESET_SIG_LENGTH_1_6us = 6, /*!< 1.6 us */ 65 WDT_RESET_SIG_LENGTH_3_2us = 7 /*!< 3.2 us */ 66 } wdt_reset_sig_length_t; 67 68 69 #ifdef __cplusplus 70 } 71 #endif 72
