1 // Copyright 2015-2018 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 #ifndef __ESP_INT_WDT_H 16 #define __ESP_INT_WDT_H 17 18 #ifdef __cplusplus 19 extern "C" { 20 #endif 21 22 /** @addtogroup Watchdog_APIs 23 * @{ 24 */ 25 26 /* 27 This routine enables a watchdog to catch instances of processes disabling 28 interrupts for too long, or code within interrupt handlers taking too long. 29 It does this by setting up a watchdog which gets fed from the FreeRTOS 30 task switch interrupt. When this watchdog times out, initially it will call 31 a high-level interrupt routine that will panic FreeRTOS in order to allow 32 for forensic examination of the state of the both CPUs. When this interrupt 33 handler is not called and the watchdog times out a second time, it will 34 reset the SoC. 35 36 This uses the TIMERG1 WDT. 37 */ 38 39 40 /** 41 * @brief Initialize the non-CPU-specific parts of interrupt watchdog. 42 * This is called in the init code if the interrupt watchdog 43 * is enabled in menuconfig. 44 * 45 */ 46 void esp_int_wdt_init(void); 47 48 /** 49 * @brief Enable the interrupt watchdog on the current CPU. This is called 50 * in the init code by both CPUs if the interrupt watchdog is enabled 51 * in menuconfig. 52 * 53 */ 54 void esp_int_wdt_cpu_init(void); 55 56 57 58 /** 59 * @} 60 */ 61 62 63 #ifdef __cplusplus 64 } 65 #endif 66 67 #endif 68
