125 lines
4.1 KiB
C
125 lines
4.1 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2020 microDev
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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#include "shared-bindings/watchdog/__init__.h"
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#include "shared-bindings/microcontroller/__init__.h"
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#include "common-hal/watchdog/WatchDogTimer.h"
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#include "esp_task_wdt.h"
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extern void esp_task_wdt_isr_user_handler(void);
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void esp_task_wdt_isr_user_handler(void) {
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// just delete, deiniting TWDT in isr context causes a crash
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if (esp_task_wdt_delete(NULL) == ESP_OK) {
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watchdog_watchdogtimer_obj_t *self = &common_hal_mcu_watchdogtimer_obj;
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self->mode = WATCHDOGMODE_NONE;
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}
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// schedule watchdog timeout exception
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mp_obj_exception_clear_traceback(MP_OBJ_FROM_PTR(&mp_watchdog_timeout_exception));
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MP_STATE_THREAD(mp_pending_exception) = &mp_watchdog_timeout_exception;
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#if MICROPY_ENABLE_SCHEDULER
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if (MP_STATE_VM(sched_state) == MP_SCHED_IDLE) {
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MP_STATE_VM(sched_state) = MP_SCHED_PENDING;
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}
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#endif
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}
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void common_hal_watchdog_feed(watchdog_watchdogtimer_obj_t *self) {
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esp_task_wdt_reset();
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}
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void common_hal_watchdog_deinit(watchdog_watchdogtimer_obj_t *self) {
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if (self->mode == WATCHDOGMODE_NONE) {
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return;
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}
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if (esp_task_wdt_delete(NULL) == ESP_OK && esp_task_wdt_deinit() == ESP_OK) {
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self->mode = WATCHDOGMODE_NONE;
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}
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}
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static void wdt_config(uint32_t timeout, watchdog_watchdogmode_t mode) {
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// enable panic hanler in WATCHDOGMODE_RESET mode
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// initialize Task Watchdog Timer (TWDT)
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esp_task_wdt_config_t twdt_config = {
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.timeout_ms = timeout,
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.idle_core_mask = (1 << portNUM_PROCESSORS) - 1, // Bitmask of all cores
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.trigger_panic = (mode == WATCHDOGMODE_RESET),
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};
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if (esp_task_wdt_init(&twdt_config) != ESP_OK) {
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mp_raise_msg(&mp_type_MemoryError, NULL);
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}
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esp_task_wdt_add(NULL);
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}
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mp_float_t common_hal_watchdog_get_timeout(watchdog_watchdogtimer_obj_t *self) {
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return self->timeout;
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}
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void common_hal_watchdog_set_timeout(watchdog_watchdogtimer_obj_t *self, mp_float_t new_timeout) {
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if (!(self->timeout < new_timeout || self->timeout > new_timeout)) {
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return;
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}
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if ((uint64_t)new_timeout > UINT32_MAX) {
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mp_raise_ValueError_varg(translate("%q must be <= %u"), MP_QSTR_timeout, UINT32_MAX);
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}
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self->timeout = new_timeout;
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if (self->mode != WATCHDOGMODE_NONE) {
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wdt_config(new_timeout, self->mode);
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}
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}
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watchdog_watchdogmode_t common_hal_watchdog_get_mode(watchdog_watchdogtimer_obj_t *self) {
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return self->mode;
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}
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void common_hal_watchdog_set_mode(watchdog_watchdogtimer_obj_t *self, watchdog_watchdogmode_t new_mode) {
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if (self->mode == new_mode) {
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return;
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}
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switch (new_mode) {
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case WATCHDOGMODE_NONE:
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common_hal_watchdog_deinit(self);
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break;
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case WATCHDOGMODE_RAISE:
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case WATCHDOGMODE_RESET:
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wdt_config(self->timeout, new_mode);
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break;
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default:
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return;
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}
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self->mode = new_mode;
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}
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