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machine_wdt.c
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machine_wdt.c
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Paul Sokolovsky
* Copyright (c) 2017 Eric Poulsen
*
* 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 <string.h>
#include "py/nlr.h"
#include "py/obj.h"
#include "py/runtime.h"
#include "esp_task_wdt.h"
const mp_obj_type_t machine_wdt_type;
typedef struct _machine_wdt_obj_t {
mp_obj_base_t base;
} machine_wdt_obj_t;
STATIC machine_wdt_obj_t wdt_default = {{&machine_wdt_type}};
STATIC mp_obj_t machine_wdt_make_new(const mp_obj_type_t *type_in, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
enum { ARG_id, ARG_timeout };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_id, MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_timeout, MP_ARG_INT, {.u_int = 5000} }
};
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
if (args[ARG_id].u_int != 0) {
mp_raise_ValueError(NULL);
}
// Convert milliseconds to seconds (esp_task_wdt_init needs seconds)
args[ARG_timeout].u_int /= 1000;
if (args[ARG_timeout].u_int <= 0) {
mp_raise_ValueError(MP_ERROR_TEXT("WDT timeout too short"));
}
mp_int_t rs_code = esp_task_wdt_init(args[ARG_timeout].u_int, true);
if (rs_code != ESP_OK) {
mp_raise_OSError(rs_code);
}
esp_task_wdt_add(NULL);
return &wdt_default;
}
STATIC mp_obj_t machine_wdt_feed(mp_obj_t self_in) {
(void)self_in;
esp_task_wdt_reset();
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_wdt_feed_obj, machine_wdt_feed);
STATIC const mp_rom_map_elem_t machine_wdt_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_feed), MP_ROM_PTR(&machine_wdt_feed_obj) },
};
STATIC MP_DEFINE_CONST_DICT(machine_wdt_locals_dict, machine_wdt_locals_dict_table);
MP_DEFINE_CONST_OBJ_TYPE(
machine_wdt_type,
MP_QSTR_WDT,
MP_TYPE_FLAG_NONE,
make_new, machine_wdt_make_new,
locals_dict, &machine_wdt_locals_dict
);