1 // Copyright 2018 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 #include "esp_system.h" 22 23 #define MWDT0_TICK_PRESCALER 40000 24 #define MWDT0_TICKS_PER_US 500 25 #define MWDT1_TICK_PRESCALER 40000 26 #define MWDT1_TICKS_PER_US 500 27 28 /** 29 * @brief Internal function to restart PRO and APP CPUs. 30 * 31 * @note This function should not be called from FreeRTOS applications. 32 * Use esp_restart instead. 33 * 34 * This is an internal function called by esp_restart. It is called directly 35 * by the panic handler and brownout detector interrupt. 36 */ 37 void esp_restart_noos(void) __attribute__ ((noreturn)); 38 39 /** 40 * @brief Similar to esp_restart_noos, but resets all the digital peripherals. 41 */ 42 void esp_restart_noos_dig(void) __attribute__ ((noreturn)); 43 44 /** 45 * @brief Internal function to set reset reason hint 46 * 47 * The hint is used do distinguish different reset reasons when software reset 48 * is performed. 49 * 50 * The hint is stored in RTC store register, RTC_RESET_CAUSE_REG. 51 * 52 * @param hint Desired esp_reset_reason_t value for the real reset reason 53 */ 54 void esp_reset_reason_set_hint(esp_reset_reason_t hint); 55 56 /** 57 * @brief Internal function to get the reset hint value 58 * @return - Reset hint value previously stored into RTC_RESET_CAUSE_REG using 59 * esp_reset_reason_set_hint function 60 * - ESP_RST_UNKNOWN if the value in RTC_RESET_CAUSE_REG is invalid 61 */ 62 esp_reset_reason_t esp_reset_reason_get_hint(void); 63 64 /** 65 * @brief Get the time in microseconds since startup 66 * 67 * @returns time since g_startup_time; definition should be fixed by system time provider 68 * no matter the underlying timer used. 69 */ 70 int64_t esp_system_get_time(void); 71 72 /** 73 * @brief Get the resolution of the time returned by `esp_system_get_time`. 74 * 75 * @returns the resolution in nanoseconds 76 */ 77 uint32_t esp_system_get_time_resolution(void); 78 79 #ifdef __cplusplus 80 } 81 #endif 82
