xiaoxiang781216 commented on code in PR #20782: URL: https://github.com/apache/nuttx/pull/20782#discussion_r4355696852
########## boards/sim/sim/sim/src/sim_watchdog.c: ########## @@ -0,0 +1,180 @@ +/**************************************************************************** + * boards/sim/sim/sim/src/sim_watchdog.c + * + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the + * License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdbool.h> +#include <errno.h> +#include <nuttx/debug.h> + +#include <nuttx/board.h> +#include <nuttx/clock.h> +#include <nuttx/wdog.h> +#include <nuttx/timers/watchdog.h> + +#include "sim.h" + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +struct sim_wdt_s +{ + struct watchdog_lowerhalf_s lower; + struct wdog_s wdog; + uint32_t timeout; /* Timeout in milliseconds */ + bool started; +}; + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +static int sim_wdt_start(struct watchdog_lowerhalf_s *lower); +static int sim_wdt_stop(struct watchdog_lowerhalf_s *lower); +static int sim_wdt_keepalive(struct watchdog_lowerhalf_s *lower); +static int sim_wdt_getstatus(struct watchdog_lowerhalf_s *lower, + struct watchdog_status_s *status); +static int sim_wdt_settimeout(struct watchdog_lowerhalf_s *lower, + uint32_t timeout); + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static const struct watchdog_ops_s g_sim_wdt_ops = +{ + .start = sim_wdt_start, + .stop = sim_wdt_stop, + .keepalive = sim_wdt_keepalive, + .getstatus = sim_wdt_getstatus, + .settimeout = sim_wdt_settimeout, +}; + +static struct sim_wdt_s g_sim_wdt = +{ + .lower.ops = &g_sim_wdt_ops, + .timeout = CONFIG_SIM_WATCHDOG_TIMEOUT, +}; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: sim_wdt_expire + * + * Description: + * The simulator has no reset, so a watchdog timeout ends it with + * CONFIG_SIM_WATCHDOG_EXITCODE. + * + ****************************************************************************/ + +static void sim_wdt_expire(wdparm_t arg) +{ + syslog(LOG_EMERG, "Simulated watchdog expired, exit %d\n", + CONFIG_SIM_WATCHDOG_EXITCODE); + board_power_off(CONFIG_SIM_WATCHDOG_EXITCODE); +} + +static void sim_wdt_arm(struct sim_wdt_s *priv) +{ + wd_start(&priv->wdog, MSEC2TICK(priv->timeout), sim_wdt_expire, + (wdparm_t)priv); +} + +static int sim_wdt_start(struct watchdog_lowerhalf_s *lower) +{ + struct sim_wdt_s *priv = (struct sim_wdt_s *)lower; + + priv->started = true; + sim_wdt_arm(priv); + return OK; +} + +static int sim_wdt_stop(struct watchdog_lowerhalf_s *lower) +{ + struct sim_wdt_s *priv = (struct sim_wdt_s *)lower; + + priv->started = false; + wd_cancel(&priv->wdog); + return OK; +} + +static int sim_wdt_keepalive(struct watchdog_lowerhalf_s *lower) +{ + struct sim_wdt_s *priv = (struct sim_wdt_s *)lower; + + if (priv->started) + { + sim_wdt_arm(priv); + } + + return OK; +} + +static int sim_wdt_getstatus(struct watchdog_lowerhalf_s *lower, + struct watchdog_status_s *status) +{ + struct sim_wdt_s *priv = (struct sim_wdt_s *)lower; + + status->flags = priv->started ? WDFLAGS_ACTIVE | WDFLAGS_RESET : 0; + status->timeout = priv->timeout; + status->timeleft = TICK2MSEC(wd_gettime(&priv->wdog)); + return OK; +} + +static int sim_wdt_settimeout(struct watchdog_lowerhalf_s *lower, + uint32_t timeout) +{ + struct sim_wdt_s *priv = (struct sim_wdt_s *)lower; + + if (timeout == 0) + { + return -EINVAL; + } + + priv->timeout = timeout; + return sim_wdt_keepalive(lower); +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: sim_watchdog_initialize + * + * Description: + * Register the simulated watchdog at CONFIG_WATCHDOG_DEVPATH. + * + ****************************************************************************/ + +int sim_watchdog_initialize(void) Review Comment: yes, you are right. how about move sim watchdog to the common place like timer_wdog.c? -- This is an automated message from the Apache Git Service. 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