sensor_send_monitor_warn_frag_data((uint8_t *)frag_data_buf, data_len, frag_num, 0);
时间: 2023-08-12 09:06:39 浏览: 130
这是一个函数调用,函数名为 sensor_send_monitor_warn_frag_data,传入了四个参数:一个指向 uint8_t 类型的数组 frag_data_buf,一个表示数据长度的整数 data_len,一个表示分片号的整数 frag_num,最后一个参数为0。由于我不知道这个函数是在哪个上下文中调用的,所以我无法提供更多的信息。
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static void sensor_data_task(void *args) { xQueueHandle sensor_queue = (xQueueHandle)args; static D_MsgData msg_data; static D_SensorData sensor_data; static D_SensorData sensor_data1; static D_S16 sensor_value; while(1) { if(xQueueReceive(sensor_queue, &msg_data,( TickType_t ) pdMS_TO_TICKS(1000))) { if (msg_data.msg_type == D_MSG_TYPE_AD_DATA) { d_drv_exit_low_power(); /*get pressure data*/ if (!d_drv_is_low_power()) { d_adc_sample_data(D_ADC_CHANNEL_SENSOR_DATA, &sensor_value); //D_DUMP("[sensor_data_task]: batterry_ad_value = %d", sensor_value); /*battery level check*/ if(sensor_value > D_ADC_BAT_HIPOWER) { sensor_data.battery_level = 100; } else if(sensor_value < D_ADC_BAT_LOPOWER) { sensor_data.battery_level = 0; } else { sensor_data.battery_level = (sensor_value - D_ADC_BAT_LOPOWER)*100/ (D_ADC_BAT_HIPOWER - D_ADC_BAT_LOPOWER); } D_DUMP("[sensor_data_task]: batterry_ad_value = %d, battery_level = %d", sensor_value, sensor_data.battery_level); sensor_data.sensor_type = D_SENSOR_TEMPERATURE; sensor_data.sensor_info.value = d_ds18b20_get_data(); warn_check(D_SENSOR_TEMPERATURE, &sensor_data.sensor_info); //D_DUMP("[sensor_data_task]: temperature_sensor_value = %d", sensor_data.sensor_info.value); sensor_data1.battery_level = sensor_data.battery_level; sensor_data1.sensor_type = D_SENSOR_VALVE; sensor_data1.sensor_info.value = (((D_U8)config_info.valve_controlled_type) << 4) |((D_U8)(10 - config_info.valve_status)); //D_DUMP("[sensor_data_task]: valve_sensor_value = %d", sensor_data1.sensor_info.value); } if (sensor_data_event_user_callback != NULL) { sensor_data_event_user_callback(&sensor_data); nrf_delay_us(1000); sensor_data_event_user_callback(&sensor_data1); } d_drv_enter_low_power(); } } } } 啥意思
这段代码是一个名为"sensor_data_task"的静态函数,它是一个任务函数。在这个任务中,它通过接收一个队列中的数据来获取传感器数据。首先,它会检查接收到的消息类型是否为AD数据类型。如果是AD数据类型,则会执行一系列操作。
首先,它会退出低功耗模式,然后获取压力传感器的数据值。接着,它会根据获取的AD值来判断电池电量的等级,并将结果保存到sensor_data结构体的battery_level字段中。
然后,它会设置sensor_data结构体的sensor_type字段为D_SENSOR_TEMPERATURE,并调用d_ds18b20_get_data()函数来获取温度传感器的数据值,并将结果保存到sensor_info结构体的value字段中。紧接着,它会调用warn_check()函数来检查温度传感器的数据,并进行相应的处理。
接下来,它会设置sensor_data1结构体的battery_level字段为sensor_data结构体中保存的电池电量值,并设置sensor_data1结构体的sensor_type字段为D_SENSOR_VALVE。然后,它会将阀门控制类型和阀门状态信息保存到sensor_info结构体的value字段中。
接着,它会检查是否注册了sensor_data_event_user_callback回调函数。如果注册了,则会依次调用该回调函数,并将sensor_data和sensor_data1作为参数传入。最后,它会进入低功耗模式。
总体来说,这段代码的功能是获取传感器数据,并通过回调函数将数据传递给其他模块进行处理。
/* * Copyright (C) 2011-2014 MediaTek Inc. * * This program is free software: you can redistribute it and/or modify it under the terms of the * GNU General Public License version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along with this program. * If not, see <http://www.gnu.org/licenses/>. */ #include <linux/module.h> #include <linux/list.h> #include <linux/spinlock.h> #include "SCP_power_monitor.h" #include "scp_helper.h" static LIST_HEAD(power_monitor_list); static DEFINE_SPINLOCK(pm_lock); static atomic_t power_status = ATOMIC_INIT(SENSOR_POWER_DOWN); void scp_power_monitor_notify(uint8_t action, void *data) { struct scp_power_monitor *c; unsigned long flags; spin_lock_irqsave(&pm_lock, flags); list_for_each_entry(c, &power_monitor_list, list) { WARN_ON(c->notifier_call == NULL); c->notifier_call(action, data); pr_debug("scp_power_monitor_notify, module name:%s notify\n", c->name); } switch (action) { case SENSOR_POWER_DOWN: atomic_set(&power_status, SENSOR_POWER_DOWN); break; case SENSOR_POWER_UP: atomic_set(&power_status, SENSOR_POWER_UP); break; } spin_unlock_irqrestore(&pm_lock, flags); } int scp_power_monitor_register(struct scp_power_monitor *monitor) { int err = 0; struct scp_power_monitor *c; WARN_ON(monitor->name == NULL || monitor->notifier_call == NULL); spin_lock_irq(&pm_lock); list_for_each_entry(c, &power_monitor_list, list) { if (!strcmp(c->name, monitor->name)) { err = -1; goto out; } } list_add(&monitor->list, &power_monitor_list); if (atomic_read(&power_status) == SENSOR_POWER_UP) { pr_debug("scp_power_monitor_notify, module name:%s notify\n", monitor->name); monitor->notifier_call(SENSOR_POWER_UP, NULL); } spin_unlock_irq(&pm_lock); return err; out: pr_err("%s scp_power_monitor_register fail\n", monitor->name); spin_unlock_irq(&pm_lock); return err; } int scp_power_monitor_deregister(struct scp_power_monitor *monitor) { if (WARN_ON(list_empty(&monitor->list))) return -1; spin_lock_irq(&pm_lock); list_del(&monitor->list); spin_unlock_irq(&pm_lock); return 0; }分析代码
这段代码是一个基于 Linux 内核的电源监控模块,主要包含以下几个部分:
1. 头文件引入和宏定义:包括了一些必要的头文件和宏定义,如模块、链表、自旋锁等。
2. 结构体定义:定义了一个名为 scp_power_monitor 的结构体,包含了模块名称、通知回调函数等信息。
3. 全局变量定义:定义了一个名为 power_monitor_list 的链表和一个名为 power_status 的原子变量,分别用于存储已注册的电源监控模块和当前电源状态。
4. scp_power_monitor_notify 函数:用于通知所有已注册的电源监控模块有关电源状态的改变,通过遍历链表来调用每个模块的通知回调函数来实现。同时,根据 action 参数来更新 power_status 变量的值。
5. scp_power_monitor_register 函数:用于注册电源监控模块,将其添加到 power_monitor_list 链表中。如果已经存在同名模块,则返回错误;否则添加到链表中,并且如果当前电源状态为 SENSOR_POWER_UP,则调用该模块的通知回调函数来提醒其电源已经打开。
6. scp_power_monitor_deregister 函数:用于注销电源监控模块,从 power_monitor_list 链表中删除该模块的信息。
总体来说,这段代码实现了一个简单的电源监控模块,在需要监控电源状态的场景下可以作为一个可靠的工具使用。
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