61 lines
2.2 KiB
C
61 lines
2.2 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) 2020-2021 Damien P. George
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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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// This file is never compiled standalone, it's included directly from
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// extmod/machine_wdt.c via MICROPY_PY_MACHINE_WDT_INCLUDEFILE.
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#include "hardware/watchdog.h"
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// The maximum timeout in milliseconds is: 0xffffff / 2 / 1000
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#define WDT_TIMEOUT_MAX 8388
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typedef struct _machine_wdt_obj_t {
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mp_obj_base_t base;
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} machine_wdt_obj_t;
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STATIC const machine_wdt_obj_t machine_wdt = {{&machine_wdt_type}};
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STATIC machine_wdt_obj_t *mp_machine_wdt_make_new_instance(mp_int_t id, mp_int_t timeout_ms) {
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// Verify the WDT id.
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if (id != 0) {
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mp_raise_msg_varg(&mp_type_ValueError, MP_ERROR_TEXT("WDT(%d) doesn't exist"), id);
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}
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// Start the watchdog (timeout is in milliseconds).
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uint32_t timeout = timeout_ms;
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if (timeout > WDT_TIMEOUT_MAX) {
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mp_raise_ValueError(MP_ERROR_TEXT("timeout exceeds " MP_STRINGIFY(WDT_TIMEOUT_MAX)));
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}
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watchdog_enable(timeout, false);
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return (machine_wdt_obj_t *)&machine_wdt;
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}
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STATIC void mp_machine_wdt_feed(machine_wdt_obj_t *self) {
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(void)self;
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watchdog_update();
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}
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