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859b6efce5
Simple implementation in-line with the rest of the MicroPython ports Tested on the nRF52832 and the nRF5340. Signed-off-by: danicampora <danicampora@gmail.com>
93 lines
3.0 KiB
C
93 lines
3.0 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) 2025 Daniel Campora on behalf of REMOTE TECH LTD
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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 <zephyr/kernel.h>
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#include <zephyr/device.h>
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#include <zephyr/drivers/watchdog.h>
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#include <zephyr/sys/printk.h>
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#include <stdbool.h>
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#include "py/mperrno.h"
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typedef struct _machine_wdt_obj_t {
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mp_obj_base_t base;
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struct device *wdt;
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int32_t channel_id;
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} machine_wdt_obj_t;
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static machine_wdt_obj_t wdt_default = {
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{&machine_wdt_type}, NULL, -1
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};
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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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if (id != 0) {
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mp_raise_ValueError(MP_ERROR_TEXT("invalid WDT id"));
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}
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if (timeout_ms <= 0) {
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mp_raise_ValueError(MP_ERROR_TEXT("watchdog timeout too short"));
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}
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wdt_default.wdt = (struct device *)DEVICE_DT_GET(DT_ALIAS(watchdog0));
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if (!device_is_ready(wdt_default.wdt)) {
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mp_raise_OSError(MP_ENODEV);
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}
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struct wdt_timeout_cfg wdt_config = {
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/* Reset SoC when watchdog timer expires. */
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.flags = WDT_FLAG_RESET_SOC,
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/* Expire watchdog after max window */
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.window.min = 0,
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.window.max = timeout_ms,
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};
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wdt_default.channel_id = wdt_install_timeout(wdt_default.wdt, &wdt_config);
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if (wdt_default.channel_id < 0) {
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mp_raise_OSError(-wdt_default.channel_id);
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}
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mp_int_t rs_code = wdt_setup(wdt_default.wdt, WDT_OPT_PAUSE_IN_SLEEP | WDT_OPT_PAUSE_HALTED_BY_DBG);
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if (rs_code < 0) {
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mp_raise_OSError(-rs_code);
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}
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return &wdt_default;
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}
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static void mp_machine_wdt_feed(machine_wdt_obj_t *self) {
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mp_int_t rs_code = wdt_feed(self->wdt, self->channel_id);
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if (rs_code < 0) {
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mp_raise_OSError(-rs_code);
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}
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}
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