cmiot_sys.c — OTA 系统接口实现

路径: components/ota/cmiot/port/oneos/cmiot_sys.c

功能: OTA 远程升级组件的系统服务接口实现，将 OTA 核心需要的系统调用（延时、时间、日志、重启）映射到 OneOS API。这是 OTA 组件与 OneOS 内核之间的系统适配层。

引用章节: 7.8 OTA 远程升级组件

完整源码

/**
 ***********************************************************************************************************************
 * Copyright (c) 2021, China Mobile Communications Group Co.,Ltd.
 *
 * Licensed 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.
 *
 * @file        cmiot_sys.c
 *
 * @brief       Interface related to OS.
 *
 * @revision
 * Date         Author          Notes
 * 2020-10-13   OneOS Team      First Version
 ***********************************************************************************************************************
 */
#include "cmiot_sys.h"
#include "cmiot_client.h"
#ifdef CMIOT_USING_CTW
#include <os_clock.h>
#endif
#include <os_util.h>
#include <os_task.h>

/**
 * @brief  This function for sleep
 * @param[in] time  The sleep time, ms
 */
void cmiot_msleep(cmiot_uint32 time)
{
    os_task_msleep(time);
}

#ifdef CMIOT_USING_CTW
/**
 * @brief  This function will return relative now time
 * @return relative now time, ms
 */
cmiot_uint32 cmiot_get_now_time(void)
{
    return os_tick_get_value() * 1000 / OS_TICK_PER_SECOND;
}
#endif

/**
 * @brief  This function for output data
 * @param[in] data  The data
 * @param[in] len   The data len
 */
void cmiot_printf(cmiot_char *data, cmiot_uint32 len)
{
    os_kprintf("%s", data);
}

#ifdef CMIOT_USING_MULTI_SLAVE
/**
 * @brief  This function for reboot
 */
void cmiot_reboot_device(void)
{
    extern void os_hw_cpu_reset(void);
    os_hw_cpu_reset();
}
#endif

OS_INIT_CALL(cmiot_init, OS_INIT_LEVEL_APPLICATION, OS_INIT_SUBLEVEL_LOW);

关键说明

模块	说明
延时映射	cmiot_msleep → os_task_msleep，OTA 下载等待网络响应时使用
时间获取	cmiot_get_now_time 将系统 tick 转换为毫秒（仅在 CMIOT_USING_CTW 平台启用）
日志输出	cmiot_printf → os_kprintf，统一 OTA 日志输出通道
设备重启	cmiot_reboot_device → os_hw_cpu_reset，升级完成后重启到新固件
自动初始化	`OS_INIT_CALL(cmiot_init, OS_INIT_LEVEL_APPLICATION, OS_INIT