circuitpython/shared-bindings/watchdog/WatchDogTimer.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2019 Nick Moore for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <math.h>
#include <string.h>
#include "py/obj.h"
#include "py/objproperty.h"
#include "py/runtime.h"
#include "common-hal/watchdog/WatchDogTimer.h"
#include "shared-bindings/microcontroller/__init__.h"
#include "shared-bindings/watchdog/__init__.h"
#include "shared-bindings/watchdog/WatchDogTimer.h"
#include "supervisor/port.h"
//| class WatchDogTimer:
//| """Timer that is used to detect code lock ups and automatically reset the microcontroller
//| when one is detected.
//|
//| A lock up is detected when the watchdog hasn't been fed after a given duration. So, make
//| sure to call `feed` within the timeout.
//| """
//|
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//| def __init__(self) -> None:
//| """Not currently dynamically supported. Access the sole instance through `microcontroller.watchdog`."""
//| ...
//|
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//| def feed(self) -> None:
//| """Feed the watchdog timer. This must be called regularly, otherwise
//| the timer will expire."""
//| ...
//|
STATIC mp_obj_t watchdog_watchdogtimer_feed(mp_obj_t self_in) {
watchdog_watchdogtimer_obj_t *self = MP_OBJ_TO_PTR(self_in);
watchdog_watchdogmode_t current_mode = common_hal_watchdog_get_mode(self);
if (current_mode == WATCHDOGMODE_NONE) {
mp_raise_ValueError(translate("WatchDogTimer is not currently running"));
}
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common_hal_watchdog_feed(self);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(watchdog_watchdogtimer_feed_obj, watchdog_watchdogtimer_feed);
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//| def deinit(self) -> None:
//| """Stop the watchdog timer. This may raise an error if the watchdog
//| timer cannot be disabled on this platform."""
//| ...
//|
STATIC mp_obj_t watchdog_watchdogtimer_deinit(mp_obj_t self_in) {
watchdog_watchdogtimer_obj_t *self = MP_OBJ_TO_PTR(self_in);
common_hal_watchdog_deinit(self);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(watchdog_watchdogtimer_deinit_obj, watchdog_watchdogtimer_deinit);
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//| timeout: float
//| """The maximum number of seconds that can elapse between calls
//| to feed()"""
//|
STATIC mp_obj_t watchdog_watchdogtimer_obj_get_timeout(mp_obj_t self_in) {
watchdog_watchdogtimer_obj_t *self = MP_OBJ_TO_PTR(self_in);
return mp_obj_new_float(common_hal_watchdog_get_timeout(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(watchdog_watchdogtimer_get_timeout_obj, watchdog_watchdogtimer_obj_get_timeout);
STATIC mp_obj_t watchdog_watchdogtimer_obj_set_timeout(mp_obj_t self_in, mp_obj_t timeout_obj) {
watchdog_watchdogtimer_obj_t *self = MP_OBJ_TO_PTR(self_in);
mp_float_t timeout = mp_obj_get_float(timeout_obj);
if (timeout <= 0) {
mp_raise_ValueError(translate("watchdog timeout must be greater than 0"));
}
common_hal_watchdog_set_timeout(self, timeout);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(watchdog_watchdogtimer_set_timeout_obj, watchdog_watchdogtimer_obj_set_timeout);
const mp_obj_property_t watchdog_watchdogtimer_timeout_obj = {
.base.type = &mp_type_property,
.proxy = {(mp_obj_t)&watchdog_watchdogtimer_get_timeout_obj,
(mp_obj_t)&watchdog_watchdogtimer_set_timeout_obj,
(mp_obj_t)&mp_const_none_obj},
};
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//| mode: WatchDogMode
//| """The current operating mode of the WatchDogTimer `watchdog.WatchDogMode`.
//|
//| Setting a WatchDogMode activates the WatchDog::
//|
//| import microcontroller
//| import watchdog
//|
//| w = microcontroller.watchdog
//| w.timeout = 5
//| w.mode = watchdog.WatchDogMode.RAISE
//|
//|
//| Once set, the WatchDogTimer will perform the specified action if the timer expires."""
//|
STATIC mp_obj_t watchdog_watchdogtimer_obj_get_mode(mp_obj_t self_in) {
watchdog_watchdogtimer_obj_t *self = MP_OBJ_TO_PTR(self_in);
return watchdog_watchdogmode_type_to_obj(common_hal_watchdog_get_mode(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(watchdog_watchdogtimer_get_mode_obj, watchdog_watchdogtimer_obj_get_mode);
STATIC mp_obj_t watchdog_watchdogtimer_obj_set_mode(mp_obj_t self_in, mp_obj_t mode_obj) {
watchdog_watchdogtimer_obj_t *self = MP_OBJ_TO_PTR(self_in);
watchdog_watchdogmode_t current_mode = common_hal_watchdog_get_mode(self);
watchdog_watchdogmode_t new_mode = watchdog_watchdogmode_obj_to_type(mode_obj);
mp_float_t current_timeout = common_hal_watchdog_get_timeout(self);
// When setting the mode, the timeout value must be greater than zero
if (new_mode == WATCHDOGMODE_RESET || new_mode == WATCHDOGMODE_RAISE) {
if (current_timeout <= 0) {
mp_raise_ValueError(translate("WatchDogTimer.timeout must be greater than 0"));
}
}
// Don't allow changing the mode once the watchdog timer has been started
if (current_mode == WATCHDOGMODE_RESET && new_mode != WATCHDOGMODE_RESET) {
mp_raise_TypeError(translate("WatchDogTimer.mode cannot be changed once set to WatchDogMode.RESET"));
}
common_hal_watchdog_set_mode(self, new_mode);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(watchdog_watchdogtimer_set_mode_obj, watchdog_watchdogtimer_obj_set_mode);
const mp_obj_property_t watchdog_watchdogtimer_mode_obj = {
.base.type = &mp_type_property,
.proxy = {(mp_obj_t)&watchdog_watchdogtimer_get_mode_obj,
(mp_obj_t)&watchdog_watchdogtimer_set_mode_obj,
(mp_obj_t)&mp_const_none_obj},
};
STATIC const mp_rom_map_elem_t watchdog_watchdogtimer_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_feed), MP_ROM_PTR(&watchdog_watchdogtimer_feed_obj) },
{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&watchdog_watchdogtimer_deinit_obj) },
{ MP_ROM_QSTR(MP_QSTR_timeout), MP_ROM_PTR(&watchdog_watchdogtimer_timeout_obj) },
{ MP_ROM_QSTR(MP_QSTR_mode), MP_ROM_PTR(&watchdog_watchdogtimer_mode_obj) },
};
STATIC MP_DEFINE_CONST_DICT(watchdog_watchdogtimer_locals_dict, watchdog_watchdogtimer_locals_dict_table);
const mp_obj_type_t watchdog_watchdogtimer_type = {
{ &mp_type_type },
.name = MP_QSTR_WatchDogTimer,
// .make_new = watchdog_watchdogtimer_make_new,
.locals_dict = (mp_obj_dict_t*)&watchdog_watchdogtimer_locals_dict,
};